BWP / Boardwalk Pipeline Partners L.P - Документы SEC, Годовой отчет, Доверенное заявление

Boardwalk Pipeline Partners LP
US ˙ NYSE
ЭТОТ СИМВОЛ БОЛЬШЕ НЕ АКТИВЕН

Основная статистика
CIK 1336047
SEC Filings
All companies that sell securities in the United States must register with the Securities and Exchange Commission (SEC) and file reports on a regular basis. These reports include company annual reports (10K, 10Q), news updates (8K), investor presentations (found in 8Ks), insider trades (form 4), ownership reports (13D, and 13G), and reports related to the specific securities sold, such as registration statements and prospectus. This page shows recent SEC filings related to Boardwalk Pipeline Partners L.P
SEC Filings (Chronological Order)
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August 4, 2025 EX-22.1

Subsidiary Issuers and Guarantors of Registered Securities.

EXHIBIT 22.1 Subsidiary Issuers and Guarantors of Registered Securities Subsidiary Issuer Guarantor Boardwalk Pipelines, LP 5.95% Notes due 2026 Boardwalk Pipeline Partners, LP Boardwalk Pipelines, LP 4.45% Notes due 2027 Boardwalk Pipeline Partners, LP Boardwalk Pipelines, LP 4.80% Notes due 2029 Boardwalk Pipeline Partners, LP Boardwalk Pipelines, LP 3.40% Notes due 2031 Boardwalk Pipeline Partn

August 4, 2025 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2025 ☐ TRANSITION REPORT PU

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2025 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 01-32665 BOARDWALK P

May 5, 2025 EX-22.1

Subsidiary Issuers and Guarantors of Registered Securities.

EXHIBIT 22.1 Subsidiary Issuers and Guarantors of Registered Securities Subsidiary Issuer Guarantor Boardwalk Pipelines, LP 5.95% Notes due 2026 Boardwalk Pipeline Partners, LP Boardwalk Pipelines, LP 4.45% Notes due 2027 Boardwalk Pipeline Partners, LP Boardwalk Pipelines, LP 4.80% Notes due 2029 Boardwalk Pipeline Partners, LP Boardwalk Pipelines, LP 3.40% Notes due 2031 Boardwalk Pipeline Partn

May 5, 2025 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2025 ☐ TRANSITION REPORT P

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2025 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 01-32665 BOARDWALK

February 11, 2025 EX-22.1

Subsidiary Issuers and Guarantors of Registered Securities.

EXHIBIT 22.1 Subsidiary Issuers and Guarantors of Registered Securities Subsidiary Issuer Guarantor Boardwalk Pipelines, LP 5.95% Notes due 2026 Boardwalk Pipeline Partners, LP Boardwalk Pipelines, LP 4.45% Notes due 2027 Boardwalk Pipeline Partners, LP Boardwalk Pipelines, LP 4.80% Notes due 2029 Boardwalk Pipeline Partners, LP Boardwalk Pipelines, LP 3.40% Notes due 2031 Boardwalk Pipeline Partn

February 11, 2025 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2024 ☐ TRANSITION REPORT PURSUA

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 01-32665 BOARDWALK PIPEL

November 4, 2024 EX-22.1

Subsidiary Issuers and Guarantors of Registered Securities.

EXHIBIT 22.1 Subsidiary Issuers and Guarantors of Registered Securities Subsidiary Issuer Guarantor Boardwalk Pipelines, LP 4.95% Notes due 2024 Boardwalk Pipeline Partners, LP Boardwalk Pipelines, LP 5.95% Notes due 2026 Boardwalk Pipeline Partners, LP Boardwalk Pipelines, LP 4.45% Notes due 2027 Boardwalk Pipeline Partners, LP Boardwalk Pipelines, LP 4.80% Notes due 2029 Boardwalk Pipeline Partn

November 4, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2024 ☐ TRANSITION REPO

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 01-32665 BOARDW

July 29, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2024 ☐ TRANSITION REPORT PU

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 01-32665 BOARDWALK P

July 29, 2024 EX-22.1

Subsidiary Issuers and Guarantors of Registered Securities.

EXHIBIT 22.1 Subsidiary Issuers and Guarantors of Registered Securities Subsidiary Issuer Guarantor Boardwalk Pipelines, LP 4.95% Notes due 2024 Boardwalk Pipeline Partners, LP Boardwalk Pipelines, LP 5.95% Notes due 2026 Boardwalk Pipeline Partners, LP Boardwalk Pipelines, LP 4.45% Notes due 2027 Boardwalk Pipeline Partners, LP Boardwalk Pipelines, LP 4.80% Notes due 2029 Boardwalk Pipeline Partn

May 6, 2024 EX-22.1

Subsidiary Issuers and Guarantors of Registered Securities.

EXHIBIT 22.1 Subsidiary Issuers and Guarantors of Registered Securities Subsidiary Issuer Guarantor Boardwalk Pipelines, LP 4.95% Notes due 2024 Boardwalk Pipeline Partners, LP Boardwalk Pipelines, LP 5.95% Notes due 2026 Boardwalk Pipeline Partners, LP Boardwalk Pipelines, LP 4.45% Notes due 2027 Boardwalk Pipeline Partners, LP Boardwalk Pipelines, LP 4.80% Notes due 2029 Boardwalk Pipeline Partn

May 6, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2024 ☐ TRANSITION REPORT P

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 01-32665 BOARDWALK

February 16, 2024 EX-4.1

Tenth Supplemental Indenture, dated February 15, 2024, by and among Boardwalk Pipelines, LP, as issuer, Boardwalk Pipeline Partners, LP, as guarantor, and The Bank of New York Mellon Trust Company, N.A., as trustee (Incorporated by reference to Exhibit 4.1 to Boardwalk Pipeline Partners, LP’s Current Report on Form 8-K, filed on February 16, 2024)

Exhibit 4.1 Execution Version BOARDWALK PIPELINES, LP as Issuer BOARDWALK PIPELINE PARTNERS, LP as Guarantor and THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A. as Trustee $600,000,000 5.625% SENIOR NOTES DUE 2034 TENTH SUPPLEMENTAL INDENTURE Dated as of February 15, 2024 to INDENTURE Dated as of August 21, 2009 TABLE OF CONTENTS Page ARTICLE I ESTABLISHMENT OF NEW SERIES 1 Section 1.01 Establishm

February 16, 2024 8-K

Entry into a Material Definitive Agreement, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of Earliest Event Reported): February 15, 2024 BOARDWALK PIPELINE PARTNERS, LP (Exact name of registrant as specified in its charter) Delaware 01-32665 20-3265614 (State or other jurisdiction of incorporation or

February 9, 2024 424B2

$600,000,000 Boardwalk Pipelines, LP 5.625% Senior Notes due 2034 Fully and unconditionally guaranteed by Boardwalk Pipeline Partners, LP

Table of Contents Filed Pursuant to Rule 424(b)(2) Registration No. 333-274067 333-274067-01 PROSPECTUS SUPPLEMENT (To Prospectus Dated September 15, 2023) $600,000,000 Boardwalk Pipelines, LP 5.625% Senior Notes due 2034 Fully and unconditionally guaranteed by Boardwalk Pipeline Partners, LP This is an offering by Boardwalk Pipelines, LP of $600,000,000 of 5.625% senior notes due 2034. Interest o

February 9, 2024 FWP

BOARDWALK PIPELINES, LP PRICING TERM SHEET $600,000,000 5.625% Senior Notes due 2034 Issuer: Boardwalk Pipelines, LP Fully and unconditionally guaranteed by: Boardwalk Pipeline Partners, LP Ratings* (Moody’s / S&P / Fitch): Baa2 / BBB- / BBB Note typ

Filed Pursuant to Rule 433 Issuer Free Writing Prospectus dated February 8, 2024 Registration Statement No.

February 9, 2024 EX-1.1

Underwriting Agreement dated as of February 8, 2024, among Barclays Capital Inc., J.P. Morgan Securities LLC, MUFG Securities Americas Inc. and Truist Securities, Inc., as representatives of the several underwriters set forth in Schedule 1 thereto, and Boardwalk Pipeline Partners, LP and Boardwalk Pipelines, LP.

Exhibit 1.1 Execution Version $600,000,000 BOARDWALK PIPELINES, LP 5.625% Senior Notes due 2034 UNDERWRITING AGREEMENT February 8, 2024 BARCLAYS CAPITAL INC. J.P. MORGAN SECURITIES LLC MUFG SECURITIES AMERICAS INC. TRUIST SECURITIES, INC. As Representatives of the several Underwriters named in Schedule 1 hereto c/o BARCLAYS CAPITAL INC. 745 SEVENTH AVENUE NEW YORK, NY 10019 c/o J.P. MORGAN SECURIT

February 9, 2024 8-K

Entry into a Material Definitive Agreement

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of Earliest Event Reported): February 8, 2024 BOARDWALK PIPELINE PARTNERS, LP (Exact name of registrant as specified in its charter) Delaware 01-32665 20-3265614 (State or other jurisdiction of incorporation or o

February 8, 2024 424B5

Subject to Completion, dated February 8, 2024

Table of Contents Filed Pursuant to Rule 424(b)(5) Registration No. 333-274067 333-274067-01 The information in this preliminary prospectus supplement is not complete and may be changed. This preliminary prospectus supplement and the accompanying base prospectus are part of an effective registration statement filed with the Securities and Exchange Commission. This preliminary prospectus supplement

February 6, 2024 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2023 ☐ TRANSITION REPORT PURSUA

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 01-32665 BOARDWALK PIPEL

February 6, 2024 EX-22.1

Subsidiary Issuers and Guarantors of Registered Securities.

EXHIBIT 22.1 Subsidiary Issuers and Guarantors of Registered Securities Subsidiary Issuer Guarantor Boardwalk Pipelines, LP 4.95% Notes due 2024 Boardwalk Pipeline Partners, LP Boardwalk Pipelines, LP 5.95% Notes due 2026 Boardwalk Pipeline Partners, LP Boardwalk Pipelines, LP 4.45% Notes due 2027 Boardwalk Pipeline Partners, LP Boardwalk Pipelines, LP 4.80% Notes due 2029 Boardwalk Pipeline Partn

October 30, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2023 ☐ TRANSITION REPO

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 01-32665 BOARDW

October 30, 2023 EX-22.1

Subsidiary Issuers and Guarantors of Registered Securities.

EXHIBIT 22.1 Subsidiary Issuers and Guarantors of Registered Securities Subsidiary Issuer Guarantor Boardwalk Pipelines, LP 4.95% Notes due 2024 Boardwalk Pipeline Partners, LP Boardwalk Pipelines, LP 5.95% Notes due 2026 Boardwalk Pipeline Partners, LP Boardwalk Pipelines, LP 4.45% Notes due 2027 Boardwalk Pipeline Partners, LP Boardwalk Pipelines, LP 4.80% Notes due 2029 Boardwalk Pipeline Partn

September 13, 2023 CORRESP

(Signature Page Follows)

September 13, 2023 Via EDGAR U.S. Securities and Exchange Commission Division of Corporation Finance Office of Energy & Transportation 100 F Street, N.E. Washington, D.C. 20549-3561 Re: Boardwalk Pipeline Partners, LP Boardwalk Pipelines, LP Registration Statement on Form S-3, as amended File Nos. 333-274067 and 333-274067-01 Ladies and Gentlemen: On behalf of Boardwalk Pipeline Partners, LP and B

August 30, 2023 S-3/A

As filed with the Securities and Exchange Commission on August 30, 2023

S-3/A Table of Contents As filed with the Securities and Exchange Commission on August 30, 2023 Registration No.

August 18, 2023 EX-25.1

Form T-1 Statement of Eligibility of The Bank of New York Mellon Trust Company, N.A. respecting the indenture dated as of August 21, 2009.

Exhibit 25.1 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM T-l STATEMENT OF ELIGIBILITY UNDER THE TRUST INDENTURE ACT OF 1939 OF A CORPORATION DESIGNATED TO ACT AS TRUSTEE ☐ CHECK IF AN APPLICATION TO DETERMINE ELIGIBILITY OF A TRUSTEE PURSUANT TO SECTION 305(b)(2) THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A. (Exact name of trustee as specified in its charter) 95-

August 18, 2023 EX-25.2

Form T-1 Statement of Eligibility of the Bank of New York Mellon Trust Company, N.A. respecting the form of indenture governing the subordinated debt securities.

Exhibit 25.2 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM T-l STATEMENT OF ELIGIBILITY UNDER THE TRUST INDENTURE ACT OF 1939 OF A CORPORATION DESIGNATED TO ACT AS TRUSTEE ☐ CHECK IF AN APPLICATION TO DETERMINE ELIGIBILITY OF A TRUSTEE PURSUANT TO SECTION 305(b)(2) THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A. (Exact name of trustee as specified in its charter) 95-

August 18, 2023 S-3

As filed with the Securities and Exchange Commission on August 18, 2023

S-3 Table of Contents As filed with the Securities and Exchange Commission on August 18, 2023 Registration No.

August 18, 2023 EX-FILING FEES

Calculation of Filing Fee Table.

Exhibit 107 Calculation of Filing Fee Tables Form S-3 (Form Type) BOARDWALK PIPELINE PARTNERS, LP BOARDWALK PIPELINES, LP (Exact Name of Registrant as Specified in its Charter) Table 1 – Newly Registered Securities Security Type Security Class Title Fee Calculation Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Fees to Be Paid Debt Debt Securities(2) Rule 457(o) — — — — — Other Warrants Rule 457(o) — — — — — Other Rights Rule 457(o) — — — — — Other Guarantees of Debt securities(3) Rule 457(o) — — — — — Unallocated (Universal) Shelf (1) — Rule 457(o) — — $1,500,000,000 $110.

July 31, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2023 ☐ TRANSITION REPORT PU

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 01-32665 BOARDWALK P

July 31, 2023 EX-22.1

Subsidiary Issuers and Guarantors of Registered Securities.

EXHIBIT 22.1 Subsidiary Issuers and Guarantors of Registered Securities Subsidiary Issuer Guarantor Boardwalk Pipelines, LP 4.95% Notes due 2024 Boardwalk Pipeline Partners, LP Boardwalk Pipelines, LP 5.95% Notes due 2026 Boardwalk Pipeline Partners, LP Boardwalk Pipelines, LP 4.45% Notes due 2027 Boardwalk Pipeline Partners, LP Boardwalk Pipelines, LP 4.80% Notes due 2029 Boardwalk Pipeline Partn

July 3, 2023 EX-10.1

Agreement and Amendment No. 5 to Third Amended and Restated Revolving Credit Agreement, dated as of June 30, 2023, among Boardwalk Pipelines, LP, Texas Gas Transmission, LLC and Gulf South Pipeline Company, LLC, as borrowers, Boardwalk Pipeline Partners, LP, as guarantor, the several lenders and issuers party thereto, and Wells Fargo Bank, N.A., as administrative agent (Incorporated by reference to Exhibit 10.1 to the Registrant's Current Report on Form 8-K filed on July 3, 2023).

EXHIBIT 10.1 Execution Version AGREEMENT AND AMENDMENT NO. 5 TO THIRD AMENDED AND RESTATED REVOLVING CREDIT AGREEMENT AGREEMENT AND AMENDMENT NO. 5, dated as of June 30, 2023 (this “Amendment”), by and among BOARDWALK PIPELINES, LP, a Delaware limited partnership (the “Parent Borrower”), TEXAS GAS TRANSMISSION, LLC, a Delaware limited liability company (“Texas Gas”), and GULF SOUTH PIPELINE COMPAN

July 3, 2023 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date Of Report (Date of earliest event reported) June 30, 2023 BOARDWALK PIPELINE PARTNERS, LP (Exact name of registrant as specified in its charter) Delaware 01-32665 20-3265614 (State or other jurisdiction of incorporation or organ

May 1, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2023 ☐ TRANSITION REPORT P

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 01-32665 BOARDWALK

May 1, 2023 EX-22.1

Subsidiary Issuers and Guarantors of Registered Securities.

EXHIBIT 22.1 Subsidiary Issuers and Guarantors of Registered Securities Subsidiary Issuer Guarantor Boardwalk Pipelines, LP 4.95% Notes due 2024 Boardwalk Pipeline Partners, LP Boardwalk Pipelines, LP 5.95% Notes due 2026 Boardwalk Pipeline Partners, LP Boardwalk Pipelines, LP 4.45% Notes due 2027 Boardwalk Pipeline Partners, LP Boardwalk Pipelines, LP 4.80% Notes due 2029 Boardwalk Pipeline Partn

February 7, 2023 EX-22.1

Subsidiary Issuers and Guarantors of Registered Securities.

EXHIBIT 22.1 Subsidiary Issuers and Guarantors of Registered Securities Subsidiary Issuer Guarantor Boardwalk Pipelines, LP 3.375% Notes due 2023 Boardwalk Pipeline Partners, LP Boardwalk Pipelines, LP 4.95% Notes due 2024 Boardwalk Pipeline Partners, LP Boardwalk Pipelines, LP 5.95% Notes due 2026 Boardwalk Pipeline Partners, LP Boardwalk Pipelines, LP 4.45% Notes due 2027 Boardwalk Pipeline Part

February 7, 2023 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2022 ☐ TRANSITION REPORT PURSUA

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2022 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 01-32665 BOARDWALK PIPEL

October 31, 2022 EX-22.1

Subsidiary Issuers and Guarantors of Registered Securities.

EXHIBIT 22.1 Subsidiary Issuers and Guarantors of Registered Securities Subsidiary Issuer Guarantor Boardwalk Pipelines, LP 3.375% Notes due 2023 Boardwalk Pipeline Partners, LP Boardwalk Pipelines, LP 4.95% Notes due 2024 Boardwalk Pipeline Partners, LP Boardwalk Pipelines, LP 5.95% Notes due 2026 Boardwalk Pipeline Partners, LP Boardwalk Pipelines, LP 4.45% Notes due 2027 Boardwalk Pipeline Part

October 31, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2022 ☐ TRANSITION REPO

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2022 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 01-32665 BOARDW

August 1, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2022 ☐ TRANSITION REPORT PU

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2022 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 01-32665 BOARDWALK P

August 1, 2022 EX-22.1

Subsidiary Issuers and Guarantors of Registered Securities.

EXHIBIT 22.1 Subsidiary Issuers and Guarantors of Registered Securities Subsidiary Issuer Guarantor Boardwalk Pipelines, LP 3.375% Notes due 2023 Boardwalk Pipeline Partners, LP Boardwalk Pipelines, LP 4.95% Notes due 2024 Boardwalk Pipeline Partners, LP Boardwalk Pipelines, LP 5.95% Notes due 2026 Boardwalk Pipeline Partners, LP Boardwalk Pipelines, LP 4.45% Notes due 2027 Boardwalk Pipeline Part

July 5, 2022 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date Of Report (Date of earliest event reported) June 30, 2022 BOARDWALK PIPELINE PARTNERS, LP (Exact name of registrant as specified in its charter) Delaware 01-32665 20-3265614 (State or other jurisdiction of incorporation or organ

July 5, 2022 EX-10.1

Agreement and Amendment No. 4 to Third Amended and Restated Revolving Credit Agreement, dated as of June 30, 2022, among Boardwalk Pipelines, LP, Texas Gas Transmission, LLC and Gulf South Pipeline Company, LLC, as borrowers, Boardwalk Pipeline Partners, LP, as guarantor, the several lenders and issuers party thereto, and Wells Fargo Bank, N.A., as administrative agent (Incorporated by reference to Exhibit 10.1 to the Registrant's Current Report on Form 8-K filed on July 5, 2022).

EXHIBIT 10.1 Execution Version AGREEMENT AND AMENDMENT NO. 4 TO THIRD AMENDED AND RESTATED REVOLVING CREDIT AGREEMENT AGREEMENT AND AMENDMENT NO. 4, dated as of June 30, 2022 (this ?Amendment?), by and among BOARDWALK PIPELINES, LP, a Delaware limited partnership (the ?Parent Borrower?), TEXAS GAS TRANSMISSION, LLC, a Delaware limited liability company (?Texas Gas?), and GULF SOUTH PIPELINE COMPAN

May 2, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2022 ☐ TRANSITION REPORT P

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2022 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 01-32665 BOARDWALK

May 2, 2022 EX-22.1

Subsidiary Issuers and Guarantors of Registered Securities.

EXHIBIT 22.1 Subsidiary Issuers and Guarantors of Registered Securities Subsidiary Issuer Guarantor Boardwalk Pipelines, LP 3.375% Notes due 2023 Boardwalk Pipeline Partners, LP Boardwalk Pipelines, LP 4.95% Notes due 2024 Boardwalk Pipeline Partners, LP Boardwalk Pipelines, LP 5.95% Notes due 2026 Boardwalk Pipeline Partners, LP Boardwalk Pipelines, LP 4.45% Notes due 2027 Boardwalk Pipeline Part

February 17, 2022 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of Earliest Event Reported): February 16, 2022 BOARDWALK PIPELINE PARTNERS, LP (Exact name of registrant as specified in its charter) Delaware 01-32665 20-3265614 (State or other jurisdiction of incorporation or

February 17, 2022 EX-4.1

Ninth Supplemental Indenture, dated February 16, 2022, by and among Boardwalk Pipelines, LP, as issuer, Boardwalk Pipeline Partners, LP, as guarantor, and The Bank of New York Mellon Trust Company, N.A., as trustee (Incorporated by reference to Exhibit 4.1 to Boardwalk Pipeline Partners, LP’s Current Report on Form 8-K, filed on February 16, 2022).

Exhibit 4.1 Execution Version BOARDWALK PIPELINES, LP as Issuer BOARDWALK PIPELINE PARTNERS, LP as Guarantor and THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A. as Trustee $500,000,000 3.600% SENIOR NOTES DUE 2032 NINTH SUPPLEMENTAL INDENTURE Dated as of February 16, 2022 to INDENTURE Dated as of August 21, 2009 TABLE OF CONTENTS ARTICLE I ESTABLISHMENT OF NEW SERIES 1 Section 1.01 Establishment o

February 10, 2022 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of Earliest Event Reported): February 9, 2022 BOARDWALK PIPELINE PARTNERS, LP (Exact name of registrant as specified in its charter) Delaware 01-32665 20-3265614 (State or other jurisdiction of incorporation or o

February 10, 2022 424B2

$500,000,000 Boardwalk Pipelines, LP 3.600% Senior Notes due 2032 Fully and unconditionally guaranteed by Boardwalk Pipeline Partners, LP

Table of Contents Filed Pursuant to Rule 424(b)(2) Registration No. 333-252934 333-252934-01 PROSPECTUS SUPPLEMENT (To Prospectus Dated February 22, 2021) $500,000,000 Boardwalk Pipelines, LP 3.600% Senior Notes due 2032 Fully and unconditionally guaranteed by Boardwalk Pipeline Partners, LP This is an offering by Boardwalk Pipelines, LP of $500,000,000 of 3.600% senior notes due 2032. Interest on

February 10, 2022 EX-1.1

Underwriting Agreement dated as of February 9, 2022, among Barclays Capital Inc., J.P. Morgan Securities LLC, MUFG Securities Americas Inc. and Truist Securities, Inc., as representatives of the several underwriters set forth in Schedule 1 thereto, and Boardwalk Pipeline Partners, LP and Boardwalk Pipelines, LP.

EX-1.1 2 d315225dex11.htm EX-1.1 Exhibit 1.1 Execution Version $500,000,000 BOARDWALK PIPELINES, LP 3.600% Senior Notes due 2032 UNDERWRITING AGREEMENT February 9, 2022 BARCLAYS CAPITAL INC. J.P. MORGAN SECURITIES LLC MUFG SECURITIES AMERICAS INC. TRUIST SECURITIES, INC. As Representatives of the several Underwriters named in Schedule 1 hereto c/o BARCLAYS CAPITAL INC. 745 SEVENTH AVENUE NEW YORK,

February 9, 2022 FWP

BOARDWALK PIPELINES, LP PRICING TERM SHEET $500,000,000 3.600% Senior Notes due 2032 Issuer: Boardwalk Pipelines, LP Fully and unconditionally guaranteed by: Boardwalk Pipeline Partners, LP Ratings* (Moody’s / S&P / Fitch): Baa2 / BBB- / BBB Note typ

Filed Pursuant to Rule 433 Issuer Free Writing Prospectus dated February 9, 2022 Registration Statement No.

February 9, 2022 424B5

Subject to Completion, dated February 9, 2022

Table of Contents Filed Pursuant to Rule 424(b)(5) Registration No. 333-252934 333-252934-01 The information in this preliminary prospectus supplement is not complete and may be changed. This preliminary prospectus supplement and the accompanying base prospectus are part of an effective registration statement filed with the Securities and Exchange Commission. This preliminary prospectus supplement

February 8, 2022 EX-22.1

Subsidiary Issuers and Guarantors of Registered Securities.

EXHIBIT 22.1 Subsidiary Issuers and Guarantors of Registered Securities Subsidiary Issuer Guarantor Boardwalk Pipelines, LP 3.375% Notes due 2023 Boardwalk Pipeline Partners, LP Boardwalk Pipelines, LP 4.95% Notes due 2024 Boardwalk Pipeline Partners, LP Boardwalk Pipelines, LP 5.95% Notes due 2026 Boardwalk Pipeline Partners, LP Boardwalk Pipelines, LP 4.45% Notes due 2027 Boardwalk Pipeline Part

February 8, 2022 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2021 ☐ TRANSITION REPORT PURSUA

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K (Mark One) ? ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2021 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 01-32665 BOARDWALK PIPEL

November 1, 2021 EX-22.1

Subsidiary Issuers and Guarantors of Registered Securities.

EX-22.1 2 bwp2021q310qex221.htm BWP 21 Q3 EXHIBIT 22.1 EXHIBIT 22.1 Subsidiary Issuers and Guarantors of Registered Securities Subsidiary Issuer Guarantor Boardwalk Pipelines, LP 3.375% Notes due 2023 Boardwalk Pipeline Partners, LP Boardwalk Pipelines, LP 4.95% Notes due 2024 Boardwalk Pipeline Partners, LP Boardwalk Pipelines, LP 5.95% Notes due 2026 Boardwalk Pipeline Partners, LP Boardwalk Pip

November 1, 2021 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2021 ☐ TRANSITION REPO

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2021 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 01-32665 BOARDW

August 2, 2021 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2021 ☐ TRANSITION REPORT PU

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2021 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 01-32665 BOARDWALK P

August 2, 2021 EX-22.1

Subsidiary Issuers and Guarantors of Registered Securities.

EXHIBIT 22.1 Subsidiary Issuers and Guarantors of Registered Securities Subsidiary Issuer Guarantor Boardwalk Pipelines, LP 3.375% Notes due 2023 Boardwalk Pipeline Partners, LP Boardwalk Pipelines, LP 4.95% Notes due 2024 Boardwalk Pipeline Partners, LP Boardwalk Pipelines, LP 5.95% Notes due 2026 Boardwalk Pipeline Partners, LP Boardwalk Pipelines, LP 4.45% Notes due 2027 Boardwalk Pipeline Part

May 27, 2021 EX-10.1

Master Assignment and Amendment No. 3 to Third Amended and Restated Revolving Credit Agreement, dated as of May 27, 2021, among Boardwalk Pipelines, LP, Texas Gas Transmission, LLC and Gulf South Pipeline Company, LLC, as borrowers, Boardwalk Pipeline Partners, LP, as guarantor, the several lenders and issuers party thereto, and Wells Fargo Bank, N.A., as administrative agent (Incorporated by reference to Exhibit 10.1 to the Registrant's Current Report on Form 8-K filed on May 27, 2021).

EXHIBIT 10.1 Execution Version MASTER ASSIGNMENT AND AMENDMENT NO. 3 TO THIRD AMENDED AND RESTATED REVOLVING CREDIT AGREEMENT MASTER ASSIGNMENT AND AMENDMENT NO. 3, dated as of May 27, 2021 (this ?Amendment?), by and among BOARDWALK PIPELINES, LP, a Delaware limited partnership (the ?Parent Borrower?), TEXAS GAS TRANSMISSION, LLC, a Delaware limited liability company (?Texas Gas?), and GULF SOUTH

May 27, 2021 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date Of Report (Date of earliest even reported) May 27, 2021 BOARDWALK PIPELINE PARTNERS, LP (Exact name of registrant as specified in its charter) Delaware 01-32665 20-3265614 (State or other jurisdiction of incorporation or organiz

May 3, 2021 10-Q

Quarterly Report - BWP 21 Q1 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2021 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 01-32665 BOARDWALK

May 3, 2021 EX-22.1

Subsidiary Issuers and Guarantors of Registered Securities.

EXHIBIT 22.1 Subsidiary Issuers and Guarantors of Registered Securities Subsidiary Issuer Guarantor Boardwalk Pipelines, LP 3.375% Notes due 2023 Boardwalk Pipeline Partners, LP Boardwalk Pipelines, LP 4.95% Notes due 2024 Boardwalk Pipeline Partners, LP Boardwalk Pipelines, LP 5.95% Notes due 2026 Boardwalk Pipeline Partners, LP Boardwalk Pipelines, LP 4.45% Notes due 2027 Boardwalk Pipeline Part

February 18, 2021 CORRESP

-

CORRESP 1 filename1.htm February 18, 2021 Via EDGAR U.S. Securities and Exchange Commission Division of Corporation Finance 100 F Street, N.E. Washington, D.C. 20549-3561 Re: Boardwalk Pipeline Partners, LP Boardwalk Pipelines, LP Registration Statement on Form S-3 Filed February 10, 2021 File No. 333-252934 Ladies and Gentlemen: On behalf of Boardwalk Pipeline Partners, LP and Boardwalk Pipelines

February 10, 2021 EX-25.2

Form T-1 Statement of Eligibility of the Bank of New York Mellon Trust Company, N.A. respecting the form of indenture governing the subordinated debt securities.

Exhibit 25.2 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM T-1 STATEMENT OF ELIGIBILITY UNDER THE TRUST INDENTURE ACT OF 1939 OF A CORPORATION DESIGNATED TO ACT AS TRUSTEE ☐ CHECK IF AN APPLICATION TO DETERMINE ELIGIBILITY OF A TRUSTEE PURSUANT TO SECTION 305(b)(2) THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A. (Exact name of trustee as specified in its charter) 95-

February 10, 2021 EX-25.1

Form T-1 Statement of Eligibility of The Bank of New York Mellon Trust Company, N.A. respecting the indenture dated as of August 21, 2009.

Exhibit 25.1 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM T-1 STATEMENT OF ELIGIBILITY UNDER THE TRUST INDENTURE ACT OF 1939 OF A CORPORATION DESIGNATED TO ACT AS TRUSTEE ☐ CHECK IF AN APPLICATION TO DETERMINE ELIGIBILITY OF A TRUSTEE PURSUANT TO SECTION 305(b)(2) THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A. (Exact name of trustee as specified in its charter) 95-

February 10, 2021 S-3

- S-3

S-3 Table of Contents As filed with the Securities and Exchange Commission on February 10, 2021 Registration No.

February 9, 2021 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2020 ☐ TRANSITION REPORT PURSUA

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2020 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 01-32665 BOARDWALK PIPEL

February 9, 2021 EX-22.1

Subsidiary Issuers and Guarantors of Registered Securities.

EX-22.1 2 bwp2020q410qex221.htm BWP 20 Q4 EXHIBIT 22.1 EXHIBIT 22.1 Subsidiary Issuers and Guarantors of Registered Securities Subsidiary Issuer Guarantor Boardwalk Pipelines, LP 3.375% Notes due 2023 Boardwalk Pipeline Partners, LP Boardwalk Pipelines, LP 4.95% Notes due 2024 Boardwalk Pipeline Partners, LP Boardwalk Pipelines, LP 5.95% Notes due 2026 Boardwalk Pipeline Partners, LP Boardwalk Pip

November 2, 2020 10-Q

Quarterly Report - BWP 20 Q3 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2020 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 01-32665 BOARDW

November 2, 2020 EX-22.1

Subsidiary Issuers and Guarantors of Registered Securities.

EXHIBIT 22.1 Subsidiary Issuers and Guarantors of Registered Securities Subsidiary Issuer Guarantor Boardwalk Pipelines, LP 3.375% Notes due 2023 Boardwalk Pipeline Partners, LP Boardwalk Pipelines, LP 4.95% Notes due 2024 Boardwalk Pipeline Partners, LP Boardwalk Pipelines, LP 5.95% Notes due 2026 Boardwalk Pipeline Partners, LP Boardwalk Pipelines, LP 4.45% Notes due 2027 Boardwalk Pipeline Part

August 12, 2020 EX-4.1

Eighth Supplemental Indenture to the indenture dated August 21, 2009, by and among Boardwalk Pipelines, LP, as issuer, Boardwalk Pipeline Partners, LP, as guarantor, and The Bank of New York Mellon Trust Company, N.A., as trustee (Incorporated by reference to Exhibit 4.1 to Boardwalk Pipeline Partners, LP's Current Report on Form 8-K, filed on August 12, 2020).

EX-4.1 2 d54894dex41.htm EX-4.1 Exhibit 4.1 Execution Version BOARDWALK PIPELINES, LP as Issuer BOARDWALK PIPELINE PARTNERS, LP as Guarantor and THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A. as Trustee $500,000,000 3.400% SENIOR NOTES DUE 2031 EIGHTH SUPPLEMENTAL INDENTURE Dated as of August 11, 2020 to INDENTURE Dated as of August 21, 2009 TABLE OF CONTENTS ARTICLE I ESTABLISHMENT OF NEW SERIES

August 12, 2020 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant - 8-K

8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of Earliest Event Reported): August 11, 2020 BOARDWALK PIPELINE PARTNERS, LP (Exact name of registrant as specified in its charter) Delaware 01-32665 20-326514 (State or other jurisdiction of incorporation or

August 6, 2020 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits

8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of Earliest Event Reported): August 4, 2020 BOARDWALK PIPELINE PARTNERS, LP (Exact name of registrant as specified in its charter) Delaware 01-32665 20-326514 (State or other jurisdiction of incorporation or

August 6, 2020 EX-1.1

Underwriting Agreement dated as of August 4, 2020, among Barclays Capital Inc., J.P. Morgan Securities LLC, Mizuho Securities USA LLC and MUFG Securities Americas Inc., as representatives of the several underwriters set forth in Schedule 1 thereto, and Boardwalk Pipeline Partners, LP and Boardwalk Pipelines, LP.

EX-1.1 Exhibit 1.1 Execution Version $500,000,000 BOARDWALK PIPELINES, LP 3.400% Senior Notes due 2031 UNDERWRITING AGREEMENT August 4, 2020 BARCLAYS CAPITAL INC. J.P. MORGAN SECURITIES LLC MIZUHO SECURITIES USA LLC MUFG SECURITIES AMERICAS INC. As Representatives of the several Underwriters named in Schedule 1 hereto c/o BARCLAYS CAPITAL INC. 745 SEVENTH AVENUE NEW YORK, NY 10019 c/o J.P. MORGAN

August 5, 2020 424B2

$500,000,000 Boardwalk Pipelines, LP 3.400% Senior Notes due 2031 Fully and unconditionally guaranteed by Boardwalk Pipeline Partners, LP

424B2 Table of Contents Filed Pursuant to Rule 424(b)(2) Registration No. 333-228714 333-228714-01 PROSPECTUS SUPPLEMENT (To Prospectus Dated December 18, 2018) $500,000,000 Boardwalk Pipelines, LP 3.400% Senior Notes due 2031 Fully and unconditionally guaranteed by Boardwalk Pipeline Partners, LP This is an offering by Boardwalk Pipelines, LP of $500,000,000 of 3.400% senior notes due 2031. Inter

August 4, 2020 FWP

BOARDWALK PIPELINES, LP PRICING TERM SHEET $500,000,000 3.400% Senior Notes due 2031 Issuer: Boardwalk Pipelines, LP Fully and unconditionally guaranteed by: Boardwalk Pipeline Partners, LP Ratings* (Moody’s / S&P / Fitch): Baa3 / BBB- / BBB- Note ty

FWP Filed Pursuant to Rule 433 Issuer Free Writing Prospectus dated August 4, 2020 Registration Statement No.

August 4, 2020 424B5

Subject to Completion, dated August 4, 2020

424B5 Table of Contents Filed Pursuant to Rule 424(b)(5) Registration No. 333-228714 333-228714-01 The information in this preliminary prospectus supplement is not complete and may be changed. This preliminary prospectus supplement and the accompanying base prospectus are part of an effective registration statement filed with the Securities and Exchange Commission. This preliminary prospectus supp

August 3, 2020 10-Q

Quarterly Report - BWP 20 Q2 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2020 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 01-32665 BOARDWALK P

August 3, 2020 EX-22.1

Subsidiary Issuers and Guarantors of Registered Securities.

EX-22.1 2 bwp2020q210qex221.htm BWP 20 Q2 EXHIBIT 22.1 EXHIBIT 22.1 Subsidiary Issuers and Guarantors of Registered Securities Subsidiary Issuer Guarantor Boardwalk Pipelines, LP 3.375% Notes due 2023 Boardwalk Pipeline Partners, LP Boardwalk Pipelines, LP 4.95% Notes due 2024 Boardwalk Pipeline Partners, LP Boardwalk Pipelines, LP 5.95% Notes due 2026 Boardwalk Pipeline Partners, LP Boardwalk Pip

May 4, 2020 10-Q

Quarterly Report - BWP 20 Q1 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2020 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 01-32665 BOARDWALK

February 11, 2020 EX-4.2

First Supplemental Indenture dated as of January 3, 2020, among Gulf South Pipeline Company, LLC, Gulf South Pipeline Company, LP and The Bank of New York Mellon Trust Company, N.A. (Incorporated by reference to Exhibit 4.2 to the Registrant's Annual Report on Form 10-K filed on February 11, 2020).

EXHIBIT 4.2 Execution Version FIRST SUPPLEMENTAL INDENTURE This FIRST SUPPLEMENTAL INDENTURE (this “First Supplemental Indenture”) is dated as of January 3, 2020, among GULF SOUTH PIPELINE COMPANY, LLC, a Delaware limited liability company (the “Successor Company”) (as successor to GULF SOUTH PIPELINE COMPANY, LP, a Delaware limited partnership (the “Issuer”), the Issuer and THE BANK OF NEW YORK M

February 11, 2020 10-K

Annual Report - 10-K BWP 2019

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2019 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 01-32665 BOARDWALK PIPEL

October 28, 2019 10-Q

Quarterly Report - BWP 19 Q3 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2019 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 01-32665 BOARDW

August 5, 2019 10-Q

Quarterly Report - BWP 19 Q2 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2019 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 01-32665 BOARDWALK P

May 6, 2019 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 DATE OF REPORT May 6, 2019 (DATE OF EARLIEST EVENT REPORTED) May 3, 2019 BOARDWALK PIPELINE PARTNERS, LP (Exact name of registrant as specified in its charter) Delaware 01-32665 20-326514 (State or other jurisdiction of incorpora

May 6, 2019 EX-4.1

Seventh Supplemental Indenture to the indenture dated August 21, 2009, by and among Boardwalk Pipelines, LP, as issuer, Boardwalk Pipeline Partners, LP, as guarantor, and The Bank of New York Mellon Trust Company, N.A., as trustee (Incorporated by reference to Exhibit 4.1 to Boardwalk Pipeline Partners, LP’s Current Report on Form 8-K, filed on May 6, 2019).

EX-4.1 2 d742489dex41.htm EX-4.1 Exhibit 4.1 BOARDWALK PIPELINES, LP as Issuer BOARDWALK PIPELINE PARTNERS, LP as Guarantor and THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A. as Trustee $500,000,000 4.80% SENIOR NOTES DUE 2029 SEVENTH SUPPLEMENTAL INDENTURE Dated as of May 3, 2019 to INDENTURE Dated as of August 21, 2009 TABLE OF CONTENTS ARTICLE I ESTABLISHMENT OF NEW SERIES 1 Section 1.01 Estab

May 3, 2019 EX-1.1

Underwriting Agreement dated as of April 30, 2019, among J.P. Morgan Securities LLC, Barclays Capital Inc. and MUFG Securities Americas Inc., as representatives of the several underwriters set forth in Schedule 1 thereto, and Boardwalk Pipeline Partners, LP and Boardwalk Pipelines, LP.

EX-1.1 2 d740624dex11.htm EX-1.1 Exhibit 1.1 $500,000,000 BOARDWALK PIPELINES, LP 4.80% Senior Notes due 2029 UNDERWRITING AGREEMENT April 30, 2019 J.P. MORGAN SECURITIES LLC BARCLAYS CAPITAL INC. MUFG SECURITIES AMERICAS INC. As Representatives of the several Underwriters named in Schedule 1 hereto c/o J.P. MORGAN SECURITIES LLC 383 MADISON AVENUE NEW YORK, NY 10179 c/o BARCLAYS CAPITAL INC. 745

May 3, 2019 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits

Form 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 DATE OF REPORT May 3, 2019 (DATE OF EARLIEST EVENT REPORTED) April 30, 2019 BOARDWALK PIPELINE PARTNERS, LP (Exact name of registrant as specified in its charter) Delaware 01-32665 20-326514 (State or other jurisdiction of i

May 1, 2019 424B2

$500,000,000 Boardwalk Pipelines, LP 4.80% Senior Notes due 2029 Fully and unconditionally guaranteed by Boardwalk Pipeline Partners, LP

424B2 Table of Contents Filed Pursuant to Rule 424(b)(2) Registration No. 333-228714 333-228714-01 PROSPECTUS SUPPLEMENT (To Prospectus Dated December 18, 2018) $500,000,000 Boardwalk Pipelines, LP 4.80% Senior Notes due 2029 Fully and unconditionally guaranteed by Boardwalk Pipeline Partners, LP This is an offering by Boardwalk Pipelines, LP of $500,000,000 of 4.80% senior notes due 2029. Interes

April 30, 2019 FWP

BOARDWALK PIPELINES, LP PRICING TERM SHEET $500,000,000 4.80% Senior Notes due 2029 Issuer: Boardwalk Pipelines, LP Fully and unconditionally guaranteed by: Boardwalk Pipeline Partners, LP Ratings* (Moody’s / S&P / Fitch): Baa3 /BBB- /BBB- Note type:

FWP Filed Pursuant to Rule 433 Issuer Free Writing Prospectus dated April 30, 2019 Registration Statement No.

April 30, 2019 424B5

Subject to Completion, dated April 30, 2019

424B5 Table of Contents Filed Pursuant to Rule 424(b)(5) Registration No. 333-228714 333-228714-01 The information in this preliminary prospectus supplement is not complete and may be changed. This preliminary prospectus supplement and the accompanying base prospectus are part of an effective registration statement filed with the Securities and Exchange Commission. This preliminary prospectus supp

April 29, 2019 10-Q

Quarterly Report - BWP 19 Q1 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ý QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2019 OR ¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 01-32665 BOARDWALK

February 13, 2019 10-K

Annual Report - 10-K BWP 2018

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K (Mark One) ý ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2018 OR o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 01-32665 BOARDWALK PIPEL

February 13, 2019 EX-3.2

Fourth Amended and Restated Agreement of Limited Partnership of Boardwalk Pipeline Partners, LP dated as of July 19, 2018 (Incorporated by reference to Exhibit 3.2 to the Registrant's Annual Report on Form 10-K filed on February 13, 2019).

EXHIBIT 3.2 Execution Version FOURTH AMENDED AND RESTATED AGREEMENT OF LIMITED PARTNERSHIP OF BOARDWALK PIPELINE PARTNERS, LP This Fourth Amended and Restated Agreement of Limited Partnership (this “Agreement of Limited Partnership”) of Boardwalk Pipeline Partners, LP (the “Partnership”), dated as of July 19, 2018 (the “Effective Date”), is entered into by and between Boardwalk GP, LP, a Delaware

December 14, 2018 CORRESP

BWP / Boardwalk Pipeline Partners L.P

CORRESP December 14, 2018 Via EDGAR U.S. Securities and Exchange Commission Division of Corporation Finance 100 F Street, N.E. Washington, D.C. 20549-3561 Re: Boardwalk Pipeline Partners, LP Boardwalk Pipelines, LP Registration Statement on Form S-3 Filed December 7, 2018 File No. 333-228714 Ladies and Gentlemen: On behalf of Boardwalk Pipeline Partners, LP and Boardwalk Pipelines, LP, and pursuan

December 7, 2018 S-3

BWP / Boardwalk Pipeline Partners L.P FORM S-3

S-3 1 d668643ds3.htm FORM S-3 Table of Contents As filed with the Securities and Exchange Commission on December 7, 2018 Registration No. 333- UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM S-3 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 Boardwalk Pipeline Partners, LP Boardwalk Pipelines, LP (Exact name of registrants as specified in its charter) Delaware

November 5, 2018 10-Q

Quarterly Report - BWP 18 Q3 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ý QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2018 OR ¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 01-32665 BOARDW

July 30, 2018 10-Q

Quarterly Report - BWP 18 Q2 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ý QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2018 OR ¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 01-32665 BOARDWALK P

July 19, 2018 POSASR

BWP / Boardwalk Pipeline Partners L.P FORM POSASR

POSASR 1 dp93489posasr.htm FORM POSASR As filed with the Securities and Exchange Commission on July 19, 2018 Registration No. 333-208627 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Post-Effective Amendment No. 1 to FORM S-3 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 Boardwalk Pipeline Partners, LP Boardwalk Pipelines, LP (Exact name of registrants as specif

July 19, 2018 POS AM

BWP / Boardwalk Pipeline Partners L.P FORM POS AM

As filed with the Securities and Exchange Commission on July 19, 2018 Registration No.

July 18, 2018 8-K

Other Events

8-K 1 dp934868k.htm FORM 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 DATE OF REPORT July 18, 2018 (DATE OF EARLIEST EVENT REPORTED) July 18, 2018 BOARDWALK PIPELINE PARTNERS, LP (Exact name of registrant as specified in its charter) Delaware 01-32665 20-3265614 (State or o

July 9, 2018 25

BWP / Boardwalk Pipeline Partners L.P BWP FORM 25

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 25 NOTIFICATION OF REMOVAL FROM LISTING AND/OR REGISTRATION UNDER SECTION 12(b) OF THE SECURITIES EXCHANGE ACT OF 1934. Commission File Number 01-32665 Issuer: Boardwalk Pipeline Partners, LP Exchange: New York Stock Exchange LLC (Exact name of Issuer as specified in its charter, and name of Exchange where security is li

June 29, 2018 EX-99.1

Boardwalk Reports Exercise of Right to Purchase Common Units

Exhibit 99.1 Boardwalk Reports Exercise of Right to Purchase Common Units HOUSTON. June 29, 2018 - Boardwalk Pipeline Partners, LP (NYSE: BWP) (the “Partnership”) announced today that Boardwalk GP, LP, the general partner of the Partnership (the “General Partner”), has elected to exercise the right to purchase all of the issued and outstanding common units representing limited partner interests (“

June 29, 2018 8-K

Regulation FD Disclosure, Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing, Financial Statements and Exhibits

8-K 1 dp925438k.htm FORM 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 DATE OF REPORT June 29, 2018 (DATE OF EARLIEST EVENT REPORTED) June 29, 2018 BOARDWALK PIPELINE PARTNERS, LP (Exact name of registrant as specified in its charter) Delaware 01-32665 20-3265614 (State or o

June 29, 2018 SC 13D/A

BWP / Boardwalk Pipeline Partners L.P / Boardwalk Pipelines Holding Corp. - FORM SC 13D/A Activist Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No.

June 26, 2018 8-K

Other Events

8-K 1 dp925428k.htm FORM 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 DATE OF REPORT June 25, 2018 (DATE OF EARLIEST EVENT REPORTED) June 25, 2018 BOARDWALK PIPELINE PARTNERS, LP (Exact name of registrant as specified in its charter) Delaware 01-32665 20-3265614 (State or o

June 26, 2018 SC 13D/A

BWP / Boardwalk Pipeline Partners L.P / Boardwalk Pipelines Holding Corp. - FORM SC 13D/A Activist Investment

SC 13D/A 1 dp92544sc13da.htm FORM SC 13D/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 9)* Boardwalk Pipeline Partners, LP (Name of Issuer) Common Units (Title of Class of Securities) 096627 10 4 (CUSIP Number) Marc A. Alpert Vice President and Secretary Boardwalk Pipelines Holding Corp. 667 Madison Ave

April 30, 2018 EX-99.1

BOARDWALK ANNOUNCES FIRST QUARTER 2018 RESULTS AND QUARTERLY DISTRIBUTION OF $0.10 PER UNIT

Exhibit 99.1 News Release BOARDWALK ANNOUNCES FIRST QUARTER 2018 RESULTS AND QUARTERLY DISTRIBUTION OF $0.10 PER UNIT HOUSTON, April 30, 2018 - Boardwalk Pipeline Partners, LP, (NYSE:BWP) announced today that it has declared a quarterly cash distribution per common unit of $0.10 ($0.40 annualized) payable on May 17, 2018, to unitholders of record as of May 10, 2018. The Partnership also announced

April 30, 2018 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 DATE OF REPORT April 30, 2018 (DATE OF EARLIEST EVENT REPORTED) April 30, 2018 BOARDWALK PIPELINE PARTNERS, LP (Exact name of registrant as specified in its charter) Delaware 01-32665 20-3265614 (State or other jurisdiction of incorp

April 30, 2018 SC 13D/A

BWP / Boardwalk Pipeline Partners L.P / Boardwalk Pipelines Holding Corp. - SCHEDULE 13D/A BOARDWALK PIPELINE PARTNERS, LP, AMENDMENT NO. 8. Activist Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No.

April 30, 2018 10-Q

Quarterly Report - BWP 18 Q1 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ý QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2018 OR ¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 01-32665 BOARDWALK

February 15, 2018 EX-21.1

List of Subsidiaries of the Registrant.

EX-21.1 3 bwp2017q410kex211.htm BWP 17 Q4 EXHIBIT 21.1 EXHIBIT 21.1 BOARDWALK PIPELINE PARTNERS, LP Subsidiaries of the Registrant December 31, 2017 Name of Subsidiary Organized Under Laws of Business Names Boardwalk Resources Company, LLC Delaware Boardwalk Texas Intrastate, LLC Delaware Texas Intrastate Boardwalk Louisiana Midstream, LLC Delaware Louisiana Midstream Boardwalk Midstream, LLC Dela

February 15, 2018 10-K

Annual Report - 10-K BWP 2017

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K (Mark One) ý ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2017 OR o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 01-32665 BOARDWALK PIPEL

February 15, 2018 EX-12.1

Statement of Computation of Ratio of Earnings to Fixed Charges.

EXHIBIT 12.1 BOARDWALK PIPELINE PARTNERS, LP COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES (Millions, except ratios) For the Year Ended December 31, 2017 2016 2015 2014 2013 Earnings: Income before income taxes $ 298.0 $ 302.8 $ 222.5 $ 147.2 $ 250.7 Equity losses in unconsolidated affiliates — — — 86.5 1.2 Net loss attributable to noncontrolling interests — — — 9.2 3.5 Amortization of capital

February 12, 2018 EX-99.1

BOARDWALK ANNOUNCES FOURTH QUARTER 2017 RESULTS AND QUARTERLY DISTRIBUTION OF $0.10 PER UNIT

Exhibit Exhibit 99.1 News Release BOARDWALK ANNOUNCES FOURTH QUARTER 2017 RESULTS AND QUARTERLY DISTRIBUTION OF $0.10 PER UNIT HOUSTON, February 12, 2018 - Boardwalk Pipeline Partners, LP, (NYSE:BWP) announced today that it has declared a quarterly cash distribution per common unit of $0.10 ($0.40 annualized) payable on March 1, 2018, to unitholders of record as of February 22, 2018. The Partnersh

February 12, 2018 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

Document UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 DATE OF REPORT February 12, 2018 (DATE OF EARLIEST EVENT REPORTED) February 12, 2018 BOARDWALK PIPELINE PARTNERS, LP (Exact name of registrant as specified in its charter) Delaware 01-32665 20-3265614 (State or other jurisdi

December 6, 2017 EX-3.1

Amendment No. 4 to the Third Amended and Restated Agreement of Limited Partnership of Boardwalk Pipeline Partners, LP, dated as of December 5, 2017 (Incorporated by reference to Exhibit 3.1 to the Registrant’s Current Report on Form 8-K filed on December 6, 2017).

Exhibit EXHIBIT 3.1 EXECUTION VERSION AMENDMENT NO. 4 TO THE THIRD AMENDED AND RESTATED AGREEMENT OF LIMITED PARTNERSHIP OF BOARDWALK PIPELINE PARTNERS, LP This Amendment No. 4 (this ? Amendment ?) to the Third Amended and Restated Agreement of Limited Partnership of Boardwalk Pipeline Partners, LP, a Delaware limited partnership (the ? Partnership ?), dated as of June 17, 2008, amended by Amendme

December 6, 2017 8-K

Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year, Financial Statements and Exhibits

Document UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 DATE OF REPORT December 6, 2017 (DATE OF EARLIEST EVENT REPORTED) December 5, 2017 BOARDWALK PIPELINE PARTNERS, LP (Exact name of registrant as specified in its charter) Delaware 01-32665 20-3265614 (State or other jurisdict

October 30, 2017 EX-99.1

BOARDWALK ANNOUNCES THIRD QUARTER 2017 RESULTS AND QUARTERLY DISTRIBUTION OF $0.10 PER UNIT

Exhibit Exhibit 99.1 News Release BOARDWALK ANNOUNCES THIRD QUARTER 2017 RESULTS AND QUARTERLY DISTRIBUTION OF $0.10 PER UNIT HOUSTON, October 30, 2017 - Boardwalk Pipeline Partners, LP, (NYSE:BWP) announced today that it has declared a quarterly cash distribution per common unit of $0.10 ($0.40 annualized) payable on November 16, 2017, to unitholders of record as of November 9, 2017. The Partners

October 30, 2017 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 DATE OF REPORT October 30, 2017 (DATE OF EARLIEST EVENT REPORTED) October 30, 2017 BOARDWALK PIPELINE PARTNERS, LP (Exact name of registrant as specified in its charter) Delaware 01-32665 20-3265614 (State or other jurisdiction of in

October 30, 2017 10-Q

Quarterly Report - BWP 17 Q3 10-Q

Document UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2017 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 01-326

October 2, 2017 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

Document UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 DATE OF REPORT October 2, 2017 (DATE OF EARLIEST EVENT REPORTED) October 2, 2017 BOARDWALK PIPELINE PARTNERS, LP (Exact name of registrant as specified in its charter) Delaware 01-32665 20-3265614 (State or other jurisdictio

October 2, 2017 EX-99.1

BOARDWALK RESTRUCTURES AND EXTENDS FIRM TRANSPORTATION SERVICE AGREEMENTS WITH SOUTHWESTERN ENERGY

Exhibit Exhibit 99.1 News Release BOARDWALK RESTRUCTURES AND EXTENDS FIRM TRANSPORTATION SERVICE AGREEMENTS WITH SOUTHWESTERN ENERGY HOUSTON , OCTOBER 2, 2017 - Boardwalk Pipeline Partners, LP (NYSE: BWP) announced today that its Texas Gas Transmission Company, LLC subsidiary (Texas Gas) has filed with the Federal Energy Regulatory Commission (FERC) seeking approval to restructure some of its exis

July 31, 2017 EX-99.1

BOARDWALK ANNOUNCES SECOND QUARTER 2017 RESULTS AND QUARTERLY DISTRIBUTION OF $0.10 PER UNIT

Exhibit Exhibit 99.1 News Release BOARDWALK ANNOUNCES SECOND QUARTER 2017 RESULTS AND QUARTERLY DISTRIBUTION OF $0.10 PER UNIT HOUSTON, July 31, 2017 - Boardwalk Pipeline Partners, LP, (NYSE:BWP) announced today that it has declared a quarterly cash distribution per common unit of $0.10 ($0.40 annualized) payable on August 17, 2017, to unitholders of record as of August 10, 2017. The Partnership a

July 31, 2017 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

Document UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 DATE OF REPORT July 31, 2017 (DATE OF EARLIEST EVENT REPORTED) July 31, 2017 BOARDWALK PIPELINE PARTNERS, LP (Exact name of registrant as specified in its charter) Delaware 01-32665 20-3265614 (State or other jurisdiction of

July 31, 2017 10-Q

Quarterly Report - BWP 17 Q2 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ý QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2017 OR ¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 01-32665 BOARDWALK P

July 31, 2017 EX-10.1

Amendment No. 2 to the Third Amended and Restated Revolving Credit Agreement, dated as of July 28, 2017, among Boardwalk Pipelines, LP, Texas Gas Transmission, LLC, Gulf South Pipeline Company, LP and Gulf Crossing Pipeline Company LLC, as borrowers, Boardwalk Pipeline Partners, LP, as guarantor, the several lenders and issuers party thereto, Wells Fargo Bank, N.A., as administrative agent, Citibank, N.A. and JPMorgan Chase Bank, N.A., as co-syndication agents, and Bank of China, New York Branch, Barclays Bank PLC, Deutsche Bank Securities Inc., Mizuho Bank, Ltd., MUFG Union Bank, N.A., and Royal Bank of Canada, as co-documentation agents, and Wells Fargo Securities, LLC, Citigroup Global Markets, Inc., J.P. Morgan Securities LLC, Bank of China, New York Branch, Barclays Bank PLC, Deutsche Bank Securities Inc., Mizuho Bank, Ltd., MUFG Union Bank, N.A., and RBC Capital Markets, as joint lead arrangers and joint bookrunners (Incorporated by reference to Exhibit 10.1 to the Registrant's Quarterly Report on Form 10-Q filed on July 31, 2017).

Exhibit 10.1 Execution Version AMENDMENT NO. 2 TO THIRD AMENDED AND RESTATED REVOLVING CREDIT AGREEMENT AMENDMENT NO. 2, dated as of July 28, 2017 (this “Amendment”), by and among BOARDWALK PIPELINES, LP, a Delaware limited partnership (the “Parent Borrower”), TEXAS GAS TRANSMISSION, LLC, a Delaware limited liability company (“Texas Gas”), GULF SOUTH PIPELINE COMPANY, LP, a Delaware limited partne

May 16, 2017 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

Document UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 DATE OF REPORT May 16, 2017 (DATE OF EARLIEST EVENT REPORTED) May 16, 2017 BOARDWALK PIPELINE PARTNERS, LP (Exact name of registrant as specified in its charter) Delaware 01-32665 20-3265614 (State or other jurisdiction of i

May 16, 2017 EX-99.1

1Boardwalk Louisiana Midstream: Sulphur HubPineville Compressor Station Investor Presentation May 2017 Dillsboro Compressor Station (Dillsboro, Indiana) 2 Important Information Forward-looking statements disclosure Statements made at this meeting or

bwpinvestorpresentationf 1Boardwalk Louisiana Midstream: Sulphur HubPineville Compressor Station Investor Presentation May 2017 Dillsboro Compressor Station (Dillsboro, Indiana) 2 Important Information Forward-looking statements disclosure Statements made at this meeting or in the materials distributed in conjunction with this meeting that contain "forward-looking statements" include, but are not

May 1, 2017 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

8-K 1 bwp2017q18k.htm BWP 2017 Q1 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 DATE OF REPORT May 1, 2017 (DATE OF EARLIEST EVENT REPORTED) May 1, 2017 BOARDWALK PIPELINE PARTNERS, LP (Exact name of registrant as specified in its charter) Delaware 01-32665 20-3265614 (State

May 1, 2017 EX-99.1

BOARDWALK ANNOUNCES FIRST QUARTER 2017 RESULTS AND QUARTERLY DISTRIBUTION OF $0.10 PER UNIT

Exhibit Exhibit 99.1 News Release BOARDWALK ANNOUNCES FIRST QUARTER 2017 RESULTS AND QUARTERLY DISTRIBUTION OF $0.10 PER UNIT HOUSTON, May 1, 2017 - Boardwalk Pipeline Partners, LP, (NYSE:BWP) announced today that it has declared a quarterly cash distribution per common unit of $0.10 ($0.40 annualized) payable on May 18, 2017, to unitholders of record as of May 11, 2017. The Partnership also annou

May 1, 2017 10-Q

Quarterly Report - BWP 17 Q1 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ý QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2017 OR ¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 01-32665 BOARDWALK

February 15, 2017 EX-12.1

Statement of Computation of Ratio of Earnings to Fixed Charges.

EXHIBIT 12.1 BOARDWALK PIPELINE PARTNERS, LP COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES (Millions, except ratios) For the Year Ended December 31, 2016 2015 2014 2013 2012 Earnings: Income before income taxes $ 302.8 $ 222.5 $ 147.2 $ 250.7 $ 306.5 Equity losses in unconsolidated affiliates — — 86.5 1.2 — Net loss attributable to noncontrolling interests — — 9.2 3.5 — Amortization of capital

February 15, 2017 10-K

Annual Report - 10-K BWP 2016

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K (Mark One) ý ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2016 OR o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 01-32665 BOARDWALK PIPEL

February 15, 2017 EX-10.6

Form of Phantom Unit and Cash Bonus Grant Agreement under the Boardwalk Pipeline Partners Unit Appreciation Rights and Cash Bonus Plan and the Boardwalk Pipeline Partners Long-Term Incentive Plan. (Incorporated by reference to Exhibit 10.6 to the Registrant's Annual Report on Form 10-K filed on February 15, 2017).

EXHIBIT 10.6 Boardwalk Pipeline Partners Phantom Unit and Cash Bonus Grant Agreement Grantee: Grant Date: February 2, 2017 1. Grant of Phantom Units with DERs and Cash Bonus. (a) Effective as of the grant date set forth above (the “Grant Date”), Boardwalk Pipeline Partners, LP, a Delaware limited partnership (the “Partnership”), hereby grants to you [●] Phantom Units under the Boardwalk Pipeline P

February 15, 2017 EX-21.1

List of Subsidiaries of the Registrant.

EXHIBIT 21.1 BOARDWALK PIPELINE PARTNERS, LP Subsidiaries of the Registrant December 31, 2016 Name of Subsidiary Organized Under Laws of Business Names Boardwalk Resources Company, LLC Delaware Boardwalk Field Services, LLC Delaware Field Services Boardwalk Louisiana Midstream, LLC Delaware Louisiana Midstream Boardwalk Midstream, LLC Delaware Boardwalk Operating GP, LLC Delaware Boardwalk Petroch

February 6, 2017 EX-99.1

BOARDWALK ANNOUNCES FOURTH QUARTER 2016 RESULTS AND QUARTERLY DISTRIBUTION OF $0.10 PER UNIT

EX-99.1 2 bwp2016q4exhibit991.htm BWP 2016 Q4 EXHIBIT 99.1 Exhibit 99.1 News Release BOARDWALK ANNOUNCES FOURTH QUARTER 2016 RESULTS AND QUARTERLY DISTRIBUTION OF $0.10 PER UNIT HOUSTON, February 6, 2017 - Boardwalk Pipeline Partners, LP, (NYSE:BWP) announced today that it has declared a quarterly cash distribution per common unit of $0.10 ($0.40 annualized) payable on February 23, 2017, to unitho

February 6, 2017 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

Document UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 DATE OF REPORT February 6, 2017 (DATE OF EARLIEST EVENT REPORTED) February 6, 2017 BOARDWALK PIPELINE PARTNERS, LP (Exact name of registrant as specified in its charter) Delaware 01-32665 20-3265614 (State or other jurisdict

January 18, 2017 EX-4.1

Sixth Supplemental Indenture to the indenture dated August 21, 2009, by and among Boardwalk Pipelines, LP, as issuer, Boardwalk Pipeline Partners, LP, as guarantor, and The Bank of New York Mellon Trust Company, N.A., as trustee (Incorporated by reference to Exhibit 4.1 to Boardwalk Pipeline Partners, LP's Current Report on Form 8-K, filed on January 12, 2017).

EX-4.1 2 d300123dex41.htm EX-4.1 Exhibit 4.1 BOARDWALK PIPELINES, LP as Issuer BOARDWALK PIPELINE PARTNERS, LP as Guarantor and THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A. as Trustee $500,000,000 4.450% SENIOR NOTES DUE 2027 SIXTH SUPPLEMENTAL INDENTURE Dated as of January 12, 2017 to INDENTURE Dated as of August 21, 2009 TABLE OF CONTENTS ARTICLE I ESTABLISHMENT OF NEW SERIES 1 Section 1.01 E

January 18, 2017 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

8-K 1 d300123d8k.htm 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of report (Date of earliest event reported): January 18, 2017 (January 12, 2017) BOARDWALK PIPELINE PARTNERS, LP (Exact name of registrant as specified in its charter) Delaware 01-32665 20-3265614 (State

January 18, 2017 EX-12.1

Boardwalk Pipeline Partners, LP Ratio of Earnings to Fixed Charges (in millions, except ratios) For the Nine Months Ended September 30, For the Year Ended December 31, 2016 2015 2014 2013 2012 2011 Earnings: Income before income taxes $ 214.4 $ 222.5

EX-12.1 Exhibit 12.1 Boardwalk Pipeline Partners, LP Ratio of Earnings to Fixed Charges (in millions, except ratios) For the Nine Months Ended September 30, For the Year Ended December 31, 2016 2015 2014 2013 2012 2011 Earnings: Income before income taxes $ 214.4 $ 222.5 $ 147.2 $ 250.7 $ 306.5 $ 217.4 Equity Losses in unconsolidated affiliates ? ? 86.5 1.2 ? ? Net loss attributable to noncontroll

January 10, 2017 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits

8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 DATE OF REPORT January 10, 2017 (DATE OF EARLIEST EVENT REPORTED) January 5, 2017 BOARDWALK PIPELINE PARTNERS, LP (Exact name of registrant as specified in its charter) Delaware 01-32665 20-3265614 (State or other jurisdiction of

January 10, 2017 EX-1.1

$500,000,000 BOARDWALK PIPELINES, LP 4.450% Senior Notes due 2027 UNDERWRITING AGREEMENT

EX-1.1 Exhibit 1.1 Execution Version $500,000,000 BOARDWALK PIPELINES, LP 4.450% Senior Notes due 2027 UNDERWRITING AGREEMENT January 5, 2017 BARCLAYS CAPITAL INC. MIZUHO SECURITIES USA INC. MUFG SECURITIES AMERICAS INC. WELLS FARGO SECURITIES, LLC As Representatives of the several Underwriters named in Schedule 1 hereto c/o BARCLAYS CAPITAL INC. 745 SEVENTH AVENUE NEW YORK, NY 10019 c/o MIZUHO SE

January 9, 2017 424B2

Title of Each Class of Securities To Be Registered

424B2 Table of Contents Filed Pursuant to Rule 424(b)(2) Registration No. 333-208627 333-208627-01 Title of Each Class of Securities To Be Registered Proposed Maximum Aggregate Offering Price Amount of Registration Fee(1) Debt Securities $500,000,000 $57,950 (1) The filing fee, calculated in accordance with Rule 457(r), has been transmitted to the SEC in connection with the securities offered from

January 5, 2017 424B5

Subject to Completion, dated January 5, 2017

424B5 Table of Contents Filed Pursuant to Rule 424(b)(5) Registration No. 333-208627 333-208627-01 The information in this preliminary prospectus supplement is not complete and may be changed. This preliminary prospectus supplement and the accompanying base prospectus are part of an effective registration statement filed with the Securities and Exchange Commission. This preliminary prospectus supp

January 5, 2017 FWP

BOARDWALK PIPELINES, LP PRICING TERM SHEET $500,000,000 4.450% Senior Notes due 2027 Issuer: Boardwalk Pipelines, LP Fully and unconditionally guaranteed by: Boardwalk Pipeline Partners, LP Ratings* (Moody’s / S&P / Fitch): Baa3 /BBB- /BBB- Note type

FWP Filed Pursuant to Rule 433 Issuer Free Writing Prospectus dated January 5, 2017 Registration Statement No.

October 31, 2016 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

Document UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 DATE OF REPORT October 31, 2016 (DATE OF EARLIEST EVENT REPORTED) October 31, 2016 BOARDWALK PIPELINE PARTNERS, LP (Exact name of registrant as specified in its charter) Delaware 01-32665 20-3265614 (State or other jurisdict

October 31, 2016 EX-99.1

BOARDWALK ANNOUNCES THIRD QUARTER 2016 RESULTS AND QUARTERLY DISTRIBUTION OF $0.10 PER UNIT

Exhibit Exhibit 99.1 News Release BOARDWALK ANNOUNCES THIRD QUARTER 2016 RESULTS AND QUARTERLY DISTRIBUTION OF $0.10 PER UNIT HOUSTON, October 31, 2016 - Boardwalk Pipeline Partners, LP, (NYSE:BWP) announced today that it has declared a quarterly cash distribution per common unit of $0.10 ($0.40 annualized) payable on November 17, 2016, to unitholders of record as of November 10, 2016. The Partner

October 31, 2016 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ý QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2016 ¨ TRANSITION REPO

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2016 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 01-32665 BOARDW

August 1, 2016 EX-10.1

Amendment No. 2 to Subordinated Loan Agreement dated as of July 28, 2016, between Boardwalk Pipelines, LP, as Borrower, and Boardwalk Pipelines Holding Corp., as Lender (Incorporated by reference to Exhibit 10.1 to the Registrant's Quarterly Report on Form 10-Q filed on August 1, 2016).

Exhibit 10.1 Execution Version AMENDMENT NO. 2 TO SUBORDINATED LOAN AGREEMENT This AMENDMENT NO. 2 dated as of July 28, 2016 (this “Amendment”) to that certain SUBORDINATED LOAN AGREEMENT dated as of July 31, 2014, as amended by AMENDMENT NO. 1 TO SUBORDINATED LOAN AGREEMENT, dated as of October 30, 2015 (as amended, the “Agreement”) is made and entered into by and between Boardwalk Pipelines Hold

August 1, 2016 EX-99.1

BOARDWALK ANNOUNCES SECOND QUARTER 2016 RESULTS AND QUARTERLY DISTRIBUTION OF $0.10 PER UNIT

Exhibit Exhibit 99.1 News Release BOARDWALK ANNOUNCES SECOND QUARTER 2016 RESULTS AND QUARTERLY DISTRIBUTION OF $0.10 PER UNIT HOUSTON, August 1, 2016 - Boardwalk Pipeline Partners, LP, (NYSE:BWP) announced today that it has declared a quarterly cash distribution per common unit of $0.10 ($0.40 annualized) payable on August 18, 2016, to unitholders of record as of August 11, 2016. The Partnership

August 1, 2016 8-K

Boardwalk Pipeline Partners L.P BWP 8-K 2Q 2016 EARNINGS RELEASE (Current Report/Significant Event)

Document UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 DATE OF REPORT August 1, 2016 (DATE OF EARLIEST EVENT REPORTED) August 1, 2016 BOARDWALK PIPELINE PARTNERS, LP (Exact name of registrant as specified in its charter) Delaware 01-32665 20-3265614 (State or other jurisdiction

August 1, 2016 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ý QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2016 ¨ TRANSITION REPORT PU

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2016 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 01-32665 BOARDWALK P

August 1, 2016 EX-10.2

Amendment No. 1 to the Third Amended and Restated Revolving Credit Agreement, dated as of July 29, 2016, among Boardwalk Pipelines, LP, Texas Gas Transmission, LLC, Gulf South Pipeline Company, LP and Gulf Crossing Pipeline Company LLC, as borrowers, Boardwalk Pipeline Partners, LP, as guarantor, the several lenders and issuers party thereto, Wells Fargo Bank, N.A., as administrative agent, Citibank, N.A. and JPMorgan Chase Bank, N.A., as co-syndication agents, and Bank of China, New York Branch, Barclays Bank PLC, Deutsche Bank Securities Inc., Mizuho Bank, Ltd., MUFG Union Bank, N.A., and Royal Bank of Canada, as co-documentation agents, and Wells Fargo Securities, LLC, Citigroup Global Markets, Inc., J.P. Morgan Securities LLC, Bank of China, New York Branch, Barclays Bank PLC, Deutsche Bank Securities Inc., Mizuho Bank, Ltd., MUFG Union Bank, N.A., and RBC Capital Markets, as joint lead arrangers and joint bookrunners (Incorporated by reference to Exhibit 10.2 to the Registrant's Quarterly Report on Form 10-Q filed on August 1, 2016).

Exhibit 10.2 Execution Version AMENDMENT NO. 1 TO THIRD AMENDED AND RESTATED REVOLVING CREDIT AGREEMENT AMENDMENT NO. 1, dated as of July 29, 2016 (this ?Amendment?), by and among BOARDWALK PIPELINES, LP, a Delaware limited partnership (the ?Parent Borrower?), TEXAS GAS TRANSMISSION, LLC, a Delaware limited liability company (?Texas Gas?), GULF SOUTH PIPELINE COMPANY, LP, a Delaware limited partne

August 1, 2016 424B5

Boardwalk Pipeline Partners, LP Common Units Representing Limited Partner Interests Having an Aggregate Offering Price of Up to

424B5 Table of Contents Filed Pursuant to Rule 424(b)(5) Registration Statement No.

August 1, 2016 EX-1.1

BOARDWALK PIPELINE PARTNERS, LP Common Units Representing Limited Partner Interests Having an Aggregate Offering Price of up to $500,000,000 Equity Distribution Agreement

Exhibit 1.1 Execution Version BOARDWALK PIPELINE PARTNERS, LP Common Units Representing Limited Partner Interests Having an Aggregate Offering Price of up to $500,000,000 Equity Distribution Agreement August 1, 2016 Citigroup Global Markets Inc. 388 Greenwich Street, 34th Floor New York, New York 10013 Mizuho Securities USA Inc. 320 Park Avenue, 12th Floor New York, New York 10022 Barclays Capital

June 24, 2016 SC 13D/A

BWP / Boardwalk Pipeline Partners L.P / Boardwalk Pipelines Holding Corp. - AMENDMENT NO. 7 TO SCHEDULE 13D Activist Investment

SC 13D/A 1 d216766dsc13da.htm AMENDMENT NO. 7 TO SCHEDULE 13D UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 7)* Boardwalk Pipeline Partners, LP (Name of Issuer) Common Units (Title of Class of Securities) 096627 10 4 (CUSIP Number) Michael E. McMahon Senior Vice President and Secretary Boardwalk Pipelines

May 20, 2016 8-K

Boardwalk Pipeline Partners L.P 8-K (Current Report/Significant Event)

8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of report (Date of earliest event reported): May 20, 2016 (May 16, 2016) BOARDWALK PIPELINE PARTNERS, LP (Exact name of registrant as specified in its charter) Delaware 01-32665 20-3265614 (State or other jurisdiction of inc

May 20, 2016 EX-12.1

Boardwalk Pipeline Partners, LP Ratio of Earnings to Fixed Charges (in millions, except ratios) For the Three Months Ended March 31, For the Year Ended December 31, 2016 2015 2014 2013 2012 2011 Earnings: Income before income taxes $ 101.2 $ 222.5 $

EX-12.1 Exhibit 12.1 Boardwalk Pipeline Partners, LP Ratio of Earnings to Fixed Charges (in millions, except ratios) For the Three Months Ended March 31, For the Year Ended December 31, 2016 2015 2014 2013 2012 2011 Earnings: Income before income taxes $ 101.2 $ 222.5 $ 147.2 $ 250.7 $ 306.5 $ 217.4 Equity Losses in unconsolidated affiliates — — 86.5 1.2 — — Net

May 20, 2016 EX-4.1

Fifth Supplemental Indenture to the indenture dated August 21, 2009, among Boardwalk Pipelines, LP, as issuer, Boardwalk Pipeline Partners, LP, as guarantor, and The Bank of New York Mellon Trust Company, N.A., as trustee (Incorporated by reference to Exhibit 4.1 to the Registrant's Current Report on Form 8-K filed on May 20, 2016).

EX-4.1 Exhibit 4.1 BOARDWALK PIPELINES, LP as Issuer BOARDWALK PIPELINE PARTNERS, LP as Guarantor and THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A. as Trustee $550,000,000 5.95% SENIOR NOTES DUE 2026 FIFTH SUPPLEMENTAL INDENTURE Dated as of May 16, 2016 to INDENTURE Dated as of August 21, 2009 TABLE OF CONTENTS ARTICLE I ESTABLISHMENT OF NEW SERIES 1 Section 1.01 Establishment of New Series 1 AR

May 13, 2016 424B2

Title of Each Class of Securities To Be Registered

Table of Contents Filed Pursuant to Rule 424(b)(2) Registration No. 333-208627 333-208627-01 Title of Each Class of Securities To Be Registered Proposed Maximum Aggregate Offering Price Amount of Registration Fee(1) Debt Securities $550,000,000 $55,385 (1) The filing fee, calculated in accordance with Rule 457(r), has been transmitted to the SEC in connection with the securities offered from Regis

May 13, 2016 8-K

Boardwalk Pipeline Partners L.P 8-K (Current Report/Significant Event)

8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 DATE OF REPORT May 13, 2016 (DATE OF EARLIEST EVENT REPORTED) May 11, 2016 BOARDWALK PIPELINE PARTNERS, LP (Exact name of registrant as specified in its charter) Delaware 01-32665 20-3265614 (State or other jurisdiction of incorp

May 13, 2016 EX-1.1

$550,000,000 BOARDWALK PIPELINES, LP 5.95% Senior Notes due 2026 UNDERWRITING AGREEMENT

EX-1.1 Exhibit 1.1 Execution Version $550,000,000 BOARDWALK PIPELINES, LP 5.95% Senior Notes due 2026 UNDERWRITING AGREEMENT May 11, 2016 BARCLAYS CAPITAL INC. DEUTSCHE BANK SECURITIES INC. J.P. MORGAN SECURITIES LLC As Representatives of the several Underwriters named in Schedule 1 hereto c/o Barclays Capital Inc. 745 Seventh Avenue New York, NY 10019 c/o Deutsche Bank Securities Inc. 60 Wall Str

May 11, 2016 424B5

Subject to Completion, dated May 11, 2016

Table of Contents Filed Pursuant to Rule 424(b)(5) Registration No. 333-208627 333-208627-01 The information in this preliminary prospectus supplement is not complete and may be changed. This preliminary prospectus supplement and the accompanying base prospectus are part of an effective registration statement filed with the Securities and Exchange Commission. This preliminary prospectus supplement

May 11, 2016 FWP

BOARDWALK PIPELINES, LP PRICING TERM SHEET $550,000,000 5.95% Senior Notes due 2026 Issuer: Boardwalk Pipelines, LP Fully and unconditionally guaranteed by: Boardwalk Pipeline Partners, LP Ratings* (Moody’s / S&P / Fitch): Baa3 / BB+ / BBB- Note type

FWP Filed Pursuant to Rule 433 Issuer Free Writing Prospectus dated May 11, 2016 Registration Statement No.

May 3, 2016 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ý QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2016 ¨ TRANSITION REPORT P

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ý QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2016 OR ¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 01-32665 BOARDWALK

May 2, 2016 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

8-K 1 bwp2016q18k.htm BWP 8-K 1Q 2016 EARNINGS RELEASE UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 DATE OF REPORT May 2, 2016 (DATE OF EARLIEST EVENT REPORTED) May 2, 2016 BOARDWALK PIPELINE PARTNERS, LP (Exact name of registrant as specified in its charter) Delaware (State or

May 2, 2016 EX-99.1

BOARDWALK ANNOUNCES FIRST QUARTER 2016 RESULTS AND QUARTERLY DISTRIBUTION OF $0.10 PER UNIT

Exhibit Exhibit 99.1 News Release BOARDWALK ANNOUNCES FIRST QUARTER 2016 RESULTS AND QUARTERLY DISTRIBUTION OF $0.10 PER UNIT HOUSTON, May 2, 2016 - Boardwalk Pipeline Partners, LP, (NYSE:BWP) announced today that it has declared a quarterly cash distribution per common unit of $0.10 ($0.40 annualized) payable on May 19, 2016, to unitholders of record as of May 12, 2016. The Partnership also annou

March 14, 2016 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 DATE OF REPORT March 14, 2016 (DATE OF EARLIEST EVENT REPORTED) March 10, 2016 BOARDWALK PIPELINE PARTNERS, LP (Exact name of registrant as specified in its charter) Delaware 01-32665 20-3265614 (State or other jurisdiction of incorp

February 19, 2016 EX-12.1

BOARDWALK PIPELINE PARTNERS, LP COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES (Millions, except ratios) For the Year Ended December 31, 2015 2014 2013 2012 2011 Earnings: Income before income taxes $ 222.5 $ 147.2 $ 250.7 $ 306.5 $ 217.4 Equity l

EXHIBIT 12.1 BOARDWALK PIPELINE PARTNERS, LP COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES (Millions, except ratios) For the Year Ended December 31, 2015 2014 2013 2012 2011 Earnings: Income before income taxes $ 222.5 $ 147.2 $ 250.7 $ 306.5 $ 217.4 Equity losses in unconsolidated affiliates — 86.5 1.2 — — Net loss attributable to noncontrolling interests — 9.2 3.5 — — Amortization of capital

February 19, 2016 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K (Mark One) ý ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2015 o TRANSITION REPORT PURSUA

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K (Mark One) ? ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2015 OR o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 01-32665 BOARDWALK PIPEL

February 19, 2016 EX-21.1

BOARDWALK PIPELINE PARTNERS, LP Subsidiaries of the Registrant December 31, 2015 Name of Subsidiary Organized Under Laws of Business Names Boardwalk Resources Company, LLC Delaware Boardwalk Field Services, LLC Delaware Field Services Boardwalk Louis

EXHIBIT 21.1 BOARDWALK PIPELINE PARTNERS, LP Subsidiaries of the Registrant December 31, 2015 Name of Subsidiary Organized Under Laws of Business Names Boardwalk Resources Company, LLC Delaware Boardwalk Field Services, LLC Delaware Field Services Boardwalk Louisiana Midstream, LLC Delaware Louisiana Midstream Boardwalk Midstream, LLC Delaware Boardwalk Operating GP, LLC Delaware Boardwalk Petroch

February 8, 2016 EX-99.1

BOARDWALK ANNOUNCES FOURTH QUARTER 2015 RESULTS AND QUARTERLY DISTRIBUTION OF $0.10 PER UNIT

Exhibit Exhibit 99.1 News Release BOARDWALK ANNOUNCES FOURTH QUARTER 2015 RESULTS AND QUARTERLY DISTRIBUTION OF $0.10 PER UNIT HOUSTON, February 8, 2016 - Boardwalk Pipeline Partners, LP, (NYSE:BWP) announced today that it has declared a quarterly cash distribution per common unit of $0.10 ($0.40 annualized) payable on February 25, 2016, to unitholders of record as of February 18, 2016. The Partne

February 8, 2016 8-K

Boardwalk Pipeline Partners L.P BWP 8-K 4Q 2015 EARNINGS RELEASE (Current Report/Significant Event)

8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 DATE OF REPORT February 8, 2016 (DATE OF EARLIEST EVENT REPORTED) February 8, 2016 BOARDWALK PIPELINE PARTNERS, LP (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or o

January 4, 2016 CORRESP

[Signature page follows]

Via EDGAR January 4, 2016 Mara L. Ransom Assistant Director United States Securities and Exchange Commission Division of Corporation Finance 100 F Street, N.E. Washington, D.C. 20549-3561 Re: Boardwalk Pipeline Partners, LP Boardwalk Pipelines, LP Registration Statement on Form S-3 Filed December 18, 2015 File No. 333-208626 Ladies and Gentleman: On behalf of Boardwalk Pipeline Partners, LP and Bo

December 18, 2015 S-3ASR

Boardwalk Pipeline Partners L.P FORM S-3ASR

S-3ASR 1 d70493ds3asr.htm FORM S-3ASR Table of Contents As filed with the Securities and Exchange Commission on December 18, 2015 Registration No. 333- UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM S-3 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 Boardwalk Pipeline Partners, LP Boardwalk Pipelines, LP (Exact name of registrants as specified in their charte

December 18, 2015 S-3

As filed with the Securities and Exchange Commission on December 18, 2015

Table of Contents As filed with the Securities and Exchange Commission on December 18, 2015 Registration No.

December 18, 2015 EX-25.2

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM T-1 STATEMENT OF ELIGIBILITY UNDER THE TRUST INDENTURE ACT OF 1939 OF A CORPORATION DESIGNATED TO ACT AS TRUSTEE

Exhibit 25.2 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM T-1 STATEMENT OF ELIGIBILITY UNDER THE TRUST INDENTURE ACT OF 1939 OF A CORPORATION DESIGNATED TO ACT AS TRUSTEE ? CHECK IF AN APPLICATION TO DETERMINE ELIGIBILITY OF A TRUSTEE PURSUANT TO SECTION 305(b)(2) THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A. (Exact name of trustee as specified in its charter) 95-

December 18, 2015 EX-12.1

BOARDWALK PIPELINE PARTNERS, LP COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES (Millions, except ratios) For the Nine Months Ended Septermber 30, For the Year Ended December 31, 2015 2014 2014 2013 2012 2011 2010 Earnings: Income before income tax

EX-12.1 EXHIBIT 12.1 BOARDWALK PIPELINE PARTNERS, LP COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES (Millions, except ratios) For the Nine Months Ended Septermber 30, For the Year Ended December 31, 2015 2014 2014 2013 2012 2011 2010 Earnings: Income before income taxes $ 156.8 $ 110.3 $ 147.2 $ 250.7 $ 306.5 $ 217.4 $ 289.9 Equity Losses in unconsolidated affiliates ? 86.9 86.5 1.2 ? ? ? Net l

December 18, 2015 EX-12.1

BOARDWALK PIPELINE PARTNERS, LP COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES (Millions, except ratios) For the Nine Months Ended September 30, For the Year Ended December 31, 2015 2014 2014 2013 2012 2011 2010 Earnings: Income before income taxe

EX-12.1 EXHIBIT 12.1 BOARDWALK PIPELINE PARTNERS, LP COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES (Millions, except ratios) For the Nine Months Ended September 30, For the Year Ended December 31, 2015 2014 2014 2013 2012 2011 2010 Earnings: Income before income taxes $ 156.8 $ 110.3 $ 147.2 $ 250.7 $ 306.5 $ 217.4 $ 289.9 Equity Losses in unconsolidated affiliates — 86.9 86.5 1.2 — — — Net lo

December 18, 2015 EX-25.1

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM T-1 STATEMENT OF ELIGIBILITY UNDER THE TRUST INDENTURE ACT OF 1939 OF A CORPORATION DESIGNATED TO ACT AS TRUSTEE

Exhibit 25.1 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM T-1 STATEMENT OF ELIGIBILITY UNDER THE TRUST INDENTURE ACT OF 1939 OF A CORPORATION DESIGNATED TO ACT AS TRUSTEE ? CHECK IF AN APPLICATION TO DETERMINE ELIGIBILITY OF A TRUSTEE PURSUANT TO SECTION 305(b)(2) THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A. (Exact name of trustee as specified in its charter) 95-

December 18, 2015 EX-25.2

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM T-1 STATEMENT OF ELIGIBILITY UNDER THE TRUST INDENTURE ACT OF 1939 OF A CORPORATION DESIGNATED TO ACT AS TRUSTEE

EX-25.2 Exhibit 25.2 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM T-1 STATEMENT OF ELIGIBILITY UNDER THE TRUST INDENTURE ACT OF 1939 OF A CORPORATION DESIGNATED TO ACT AS TRUSTEE ? CHECK IF AN APPLICATION TO DETERMINE ELIGIBILITY OF A TRUSTEE PURSUANT TO SECTION 305(b)(2) THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A. (Exact name of trustee as specified in its char

December 18, 2015 EX-25.1

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM T-1 STATEMENT OF ELIGIBILITY UNDER THE TRUST INDENTURE ACT OF 1939 OF A CORPORATION DESIGNATED TO ACT AS TRUSTEE

EX-25.1 Exhibit 25.1 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM T-1 STATEMENT OF ELIGIBILITY UNDER THE TRUST INDENTURE ACT OF 1939 OF A CORPORATION DESIGNATED TO ACT AS TRUSTEE ? CHECK IF AN APPLICATION TO DETERMINE ELIGIBILITY OF A TRUSTEE PURSUANT TO SECTION 305(b)(2) THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A. (Exact name of trustee as specified in its char

December 7, 2015 EX-99.1

October 11, 2013 Boardwalk Annual Customer Meeting Nashville Customer Meeting Boardwalk’s Response to the Changing Market Kathy Kirk, Senior Vice President Marketing & Origination Presentation for 2015 Wells Fargo Energy Symposium December 2015 1 Boa

exhibit991energysymposiu October 11, 2013 Boardwalk Annual Customer Meeting Nashville Customer Meeting Boardwalk?s Response to the Changing Market Kathy Kirk, Senior Vice President Marketing & Origination Presentation for 2015 Wells Fargo Energy Symposium December 2015 1 Boardwalk Louisiana Midstream: Sulphur Hub S utheast Market Expansion: Jasper, For est & Moss Point Compressor Station 2 Importa

December 7, 2015 8-K

Boardwalk Pipeline Partners L.P BWP 2015 12 8K ENERGY SYMPOSIUM (Current Report/Significant Event)

8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 DATE OF REPORT December 7, 2015 (DATE OF EARLIEST EVENT REPORTED) December 7, 2015 BOARDWALK PIPELINE PARTNERS, LP (Exact name of registrant as specified in its charter) Delaware 01-32665 20-3265614 (State or other jurisdiction o

November 3, 2015 EX-10.3

Amendment No. 1 to Subordinated Loan Agreement dated as of October 30, 2015, between Boardwalk Pipelines, LP, as Borrower, and Boardwalk Pipelines Holding Corp., as Lender. (Incorporated by reference to Exhibit 10.3 to the Registrant's Quarterly Report on Form 10-Q filed on November 3, 2015).

EXHIBIT 10.3 AMENDMENT NO. 1 TO SUBORDINATED LOAN AGREEMENT This AMENDMENT NO. 1 dated as of October 30, 2015 (this ?Amendment?) to that certain SUBORDINATED LOAN AGREEMENT (the ?Agreement?) dated as of July 31, 2014, is made and entered into by and between Boardwalk Pipelines Holding Corp., a Delaware corporation (the ?Lender?), and Boardwalk Pipelines, LP, a Delaware limited partnership (the ?Bo

November 3, 2015 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ý QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2015 ¨ TRANSITION REPO

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ý QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2015 OR ¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 01-32665 BOARDW

November 2, 2015 8-K

Boardwalk Pipeline Partners L.P BWP 8-K 3Q 2015 EARNINGS RELEASE (Current Report/Significant Event)

8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 DATE OF REPORT November 2, 2015 (DATE OF EARLIEST EVENT REPORTED) November 2, 2015 BOARDWALK PIPELINE PARTNERS, LP (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or o

November 2, 2015 EX-99.1

BOARDWALK ANNOUNCES THIRD QUARTER 2015 RESULTS AND QUARTERLY DISTRIBUTION OF $0.10 PER UNIT

Exhibit Exhibit 99.1 News Release BOARDWALK ANNOUNCES THIRD QUARTER 2015 RESULTS AND QUARTERLY DISTRIBUTION OF $0.10 PER UNIT HOUSTON, November 2, 2015 - Boardwalk Pipeline Partners, LP , (NYSE:BWP) announced today that it has declared a quarterly cash distribution per common unit of $0.10 ($0.40 annualized) payable on November 19, 2015, to unitholders of record as of November 12, 2015. The Partne

October 1, 2015 CORRESP

Boardwalk Pipeline Partners L.P ESP

CORRESP October 1, 2015 United States Securities and Exchange Commission Division of Corporation Finance 100 F Street, NE Washington, D.

September 22, 2015 CORRESP

Boardwalk Pipeline Partners L.P ESP

CORRESP September 22, 2015 VIA EDGAR Jennifer Thompson Accounting Branch Chief Office of Consumer Products U.

August 13, 2015 SC 13D/A

BWP / Boardwalk Pipeline Partners L.P / Boardwalk Pipeline Partners, LP - SC 13D Activist Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No.

August 13, 2015 EX-1

Joint Filing Statement

EXHIBIT A Joint Filing Statement We, the undersigned, hereby express our agreement that the attached Schedule 13D/A is, and any further amendments to the Schedule 13D originally filed on November 23, 2005 (as amended and supplemented as of the date hereof), and signed by each of the undersigned shall be, filed on behalf of each of us pursuant to and in accordance with the provisions of Rule 13d-1(k) under the Securities Exchange Act of 1934.

August 4, 2015 EX-24

POWER OF ATTORNEY FOR EXECUTING FORM ID, FORMS 3, FORMS 4 AND FORMS 5, FORM 144 AND SCHEDULE 13D AND SCHEDULE 13G

EX-24 2 keeganpoaforform35.htm KEEGAN POA EXHIBIT 24 Exhibit 24 POWER OF ATTORNEY FOR EXECUTING FORM ID, FORMS 3, FORMS 4 AND FORMS 5, FORM 144 AND SCHEDULE 13D AND SCHEDULE 13G The undersigned hereby constitutes and appoints Jamie L. Buskill, Michael E. McMahon and Steven Barkauskas, or one of them acting without the others, with full power of substitution, as the undersigned’s true and lawful at

August 3, 2015 8-K

Boardwalk Pipeline Partners L.P BWP 8-K 2Q 2015 EARNINGS RELEASE (Current Report/Significant Event)

BWP 2015 Q2 8K Earnings Release UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

August 3, 2015 EX-99.1

BOARDWALK ANNOUNCES SECOND QUARTER 2015 RESULTS AND QUARTERLY DISTRIBUTION OF $0.10 PER UNIT

BWP 2015 Q2 Exhibit 99.1 Exhibit 99.1 News Release BOARDWALK ANNOUNCES SECOND QUARTER 2015 RESULTS AND QUARTERLY DISTRIBUTION OF $0.10 PER UNIT HOUSTON, August 3, 2015 - Boardwalk Pipeline Partners, LP , (NYSE:BWP) announced today that it has declared a quarterly cash distribution per common unit of $0.10 ($0.40 annualized) payable on August 20, 2015, to unitholders of record as of August 13, 2015

August 3, 2015 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ý QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2015 ¨ TRANSITION REPORT PU

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2015 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 01-32665 BOARDWALK P

May 26, 2015 8-K

Boardwalk Pipeline Partners L.P BWP 15 Q2 8-K RCA (Current Report/Significant Event)

BWP 15 Q2 8K RCA UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 DATE OF REPORT May 26, 2015 (DATE OF EARLIEST EVENT REPORTED) May 26, 2015 BOARDWALK PIPELINE PARTNERS, LP (Exact name of registrant as specified in its charter) Delaware 01-32665 20-3265614 (State or other jurisdict

May 26, 2015 EX-10.1

Third Amended and Restated Revolving Credit Agreement, dated as of May 26, 2015, among Boardwalk Pipelines, LP, Texas Gas Transmission, LLC, Gulf South Pipeline Company, LP and Gulf Crossing Pipeline Company LLC, as borrowers, Boardwalk Pipeline Partners, LP, as guarantor, the several lenders and issuers party thereto, Wells Fargo Bank, N.A., as administrative agent, Citibank, N.A. and JPMorgan Chase Bank, N.A., as co-syndication agents, and Bank of China, New York Branch, Barclays Bank PLC, Deutsche Bank Securities Inc., Mizuho Bank, Ltd., MUFG Union Bank, N.A., and Royal Bank of Canada, as co-documentation agents, and Wells Fargo Securities, LLC, Citigroup Global Markets, Inc., J.P. Morgan Securities LLC, Bank of China, New York Branch, Barclays Bank PLC, Deutsche Bank Securities Inc., Mizuho Bank, Ltd., MUFG Union Bank, N.A., and RBC Capital Markets, as joint lead arrangers and joint bookrunners (Incorporated by reference to Exhibit 10.1 to the Registrant's Current Report on Form 8-K filed on May 26, 2015).

BWP 15 Q2 Exhibit 10.1 RCA EXECUTION VERSION EXHIBIT 10.1 Published CUSIP Number: 09662PAD6 $1,500,000,000 THIRD AMENDED AND RESTATED REVOLVING CREDIT AGREEMENT Dated as of May 26, 2015 among BOARDWALK PIPELINES, LP, TEXAS GAS TRANSMISSION, LLC, GULF SOUTH PIPELINE COMPANY, LP, and GULF CROSSING PIPELINE COMPANY LLC, as Borrowers BOARDWALK PIPELINE PARTNERS, LP, as Guarantor The Several Lenders an

May 5, 2015 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ý QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2015 ¨ TRANSITION REPORT P

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2015 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 01-32665 BOARDWALK

May 4, 2015 EX-99.1

BOARDWALK ANNOUNCES FIRST QUARTER 2015 RESULTS AND QUARTERLY DISTRIBUTION OF $0.10 PER UNIT

BWP 2015 Q1 Exhibit 99.1 Exhibit 99.1 News Release BOARDWALK ANNOUNCES FIRST QUARTER 2015 RESULTS AND QUARTERLY DISTRIBUTION OF $0.10 PER UNIT HOUSTON, May 4, 2015 - Boardwalk Pipeline Partners, LP , (NYSE:BWP) announced today that it has declared a quarterly cash distribution per common unit of $0.10 ($0.40 annualized) payable on May 21, 2015, to unitholders of record as of May 14, 2015. The Part

May 4, 2015 8-K

Boardwalk Pipeline Partners L.P BWP 15 Q1 8-K EARNINGS RELEASE (Current Report/Significant Event)

BWP 15 Q1 8K Earnings Release UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

March 12, 2015 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits

8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 DATE OF REPORT March 12, 2015 (DATE OF EARLIEST EVENT REPORTED) March 10, 2015 BOARDWALK PIPELINE PARTNERS, LP (Exact name of registrant as specified in its charter) Delaware 01-32665 20-3265614 (State or other jurisdiction of in

March 12, 2015 424B5

Title of Each Class of Securities To Be Registered

424B5 Table of Contents Filed Pursuant to Rule 424(b)(5) Registration No. 333-186768 333-186768-01 Title of Each Class of Securities To Be Registered Proposed Maximum Aggregate Offering Price Amount of Registration Fee(1) Debt Securities $250,000,000 $29,050 (1) The filing fee, calculated in accordance with Rule 457(r), has been transmitted to the SEC in connection with the securities offered from

March 12, 2015 EX-1.1

$250,000,000 BOARDWALK PIPELINES, LP 4.95% Senior Notes due 2024 UNDERWRITING AGREEMENT

EX-1.1 2 d892033dex11.htm EX-1.1 Exhibit 1.1 Execution Version $250,000,000 BOARDWALK PIPELINES, LP 4.95% Senior Notes due 2024 UNDERWRITING AGREEMENT March 10, 2015 BARCLAYS CAPITAL INC. J.P. MORGAN SECURITIES LLC As Representatives of the several Underwriters named in Schedule 1 hereto c/o Barclays Capital Inc. 745 Seventh Avenue New York, NY 10019 c/o J.P. Morgan Securities LLC 383 Madison Aven

March 10, 2015 FWP

BOARDWALK PIPELINES, LP PRICING TERM SHEET $250,000,000 4.95% Senior Notes due 2024 Issuer: Boardwalk Pipelines, LP Fully and unconditionally guaranteed by: Boardwalk Pipeline Partners, LP Ratings* (Moody?s / S&P / Fitch): Baa3 / BB+ / BBB- Note type

FWP Filed Pursuant to Rule 433 Issuer Free Writing Prospectus dated March 10, 2015 Registration Statement No.

March 10, 2015 424B5

Subject to Completion, dated March 10, 2015

424B5 1 d889844d424b5.htm 424B5 Table of Contents Filed Pursuant to Rule 424(b)(5) Registration No. 333-186768 333-186768-01 The information in this preliminary prospectus supplement is not complete and may be changed. This preliminary prospectus supplement and the accompanying base prospectus are part of an effective registration statement filed with the Securities and Exchange Commission. This p

February 20, 2015 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K (Mark One) ý ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2014 o TRANSITION REPORT PURSUA

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K (Mark One) ý ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2014 OR o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 01-32665 BOARDWALK PIPEL

February 20, 2015 EX-12.1

BOARDWALK PIPELINE PARTNERS, LP COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES (Millions, except ratios) For the Year Ended December 31, 2014 2013 2012 2011 2010 Earnings: Income before income taxes $ 147.2 $ 250.7 $ 306.5 $ 217.4 $ 289.9 Equity l

Exhibit 12.1 BOARDWALK PIPELINE PARTNERS, LP COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES (Millions, except ratios) For the Year Ended December 31, 2014 2013 2012 2011 2010 Earnings: Income before income taxes $ 147.2 $ 250.7 $ 306.5 $ 217.4 $ 289.9 Equity losses in unconsolidated affiliates 86.5 1.2 — — Net loss attributable to noncontrolling interests 9.2 3.5 — — Amortization of capitalized

February 20, 2015 EX-21.1

BOARDWALK PIPELINE PARTNERS, LP Subsidiaries of the Registrant December 31, 2014 Name of Subsidiary Organized Under Laws of Business Names Boardwalk Acquisition Company, LLC Delaware Boardwalk Field Services, LLC Delaware Field Services Boardwalk Lou

EX-21.1 3 bwp14q410kex211.htm EXHIBIT 21.1 EXHIBIT 21.1 BOARDWALK PIPELINE PARTNERS, LP Subsidiaries of the Registrant December 31, 2014 Name of Subsidiary Organized Under Laws of Business Names Boardwalk Acquisition Company, LLC Delaware Boardwalk Field Services, LLC Delaware Field Services Boardwalk Louisiana Midstream, LLC Delaware Louisiana Midstream Boardwalk Midstream, LLC Delaware Boardwalk

February 13, 2015 SC 13G/A

BWP / Boardwalk Pipeline Partners L.P / BALYASNY ASSET MANAGEMENT LLC - SC 13G/A Passive Investment

SC 13G/A SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 1) BOARDWALK PIPELINE PARTNERS, L.P. (Name of Issuer) COMMON STOCK* (Title of Class of Securities) 096627104 (CUSIP Number) December 31, 2014 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which

February 9, 2015 EX-10.1

Form of Grant of Phantom Unit Grant Agreement under the Boardwalk Pipeline Partners Long-Term Incentive Plan (Incorporated by reference to Exhibit 10.1 to the Registrant’s Current Report on Form 8-K filed on February 9, 2015).

EX-10.1 2 bwp14q4ex101to8ker.htm EXHIBIT 10.1 Exhibit 10.1 Execution Version Boardwalk Pipeline Partners Long-Term Incentive Plan Phantom Unit Grant Agreement Grantee: Grant Date: , 20 1. Grant of Phantom Units with DERs. (a) Effective as of the grant date set forth above (the “Grant Date”), Boardwalk Pipeline Partners, LP, a Delaware limited partnership (the “Partnership”), hereby grants to you P

February 9, 2015 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 DATE OF REPORT February 9, 2015 (DATE OF EARLIEST EVENT REPORTED) February 5, 2015 BOARDWALK PIPELINE PARTNERS, LP (Exact name of registrant as specified in its charter) Delaware 01-32665 20-3265614 (State or other jurisdiction of in

February 9, 2015 EX-99.1

BOARDWALK ANNOUNCES FOURTH QUARTER 2014 RESULTS AND QUARTERLY DISTRIBUTION OF $0.10 PER UNIT

Exhibit 99.1 News Release BOARDWALK ANNOUNCES FOURTH QUARTER 2014 RESULTS AND QUARTERLY DISTRIBUTION OF $0.10 PER UNIT HOUSTON, February 9, 2015 - Boardwalk Pipeline Partners, LP, (NYSE:BWP) announced today that it has declared a quarterly cash distribution per common unit of $0.10 ($0.40 annualized) payable on February 26, 2015, to unitholders of record as of February 19, 2015. The Partnership al

November 26, 2014 EX-4.1

Fourth Supplemental Indenture to the indenture dated August 21, 2009, among Boardwalk Pipelines, LP, as issuer, Boardwalk Pipeline Partners, LP, as guarantor, and The Bank of New York Mellon Trust Company, N.A., as trustee (Incorporated by reference to Exhibit 4.1 to the Registrant's Current Report on Form 8-K filed on November 26, 2014).

EX-4.1 Exhibit 4.1 BOARDWALK PIPELINES, LP as Issuer BOARDWALK PIPELINE PARTNERS, LP as Guarantor and THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A. as Trustee $350,000,000 4.95% SENIOR NOTES DUE 2024 FOURTH SUPPLEMENTAL INDENTURE Dated as of November 26, 2014 to INDENTURE Dated as of August 21, 2009 TABLE OF CONTENTS ARTICLE I ESTABLISHMENT OF NEW SERIES 1 Section 1.01 Establishment of New Serie

November 26, 2014 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 DATE OF REPORT November 26, 2014 (DATE OF EARLIEST EVENT REPORTED) November 26, 2014 BOARDWALK PIPELINE PARTNERS, LP (Exact name of registrant as specified in its charter) Delaware 01-32665 20-3265614 (State or other jurisdiction

November 26, 2014 EX-12.1

BOARDWALK PIPELINE PARTNERS, LP COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES (Dollars in millions, except ratios) For the Nine Months Ended September 30, For the Year Ended December 31, 2014 2013 2013 2012 2011 2010 2009 Earnings: Income before

EX-12.1 Exhibit 12.1 BOARDWALK PIPELINE PARTNERS, LP COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES (Dollars in millions, except ratios) For the Nine Months Ended September 30, For the Year Ended December 31, 2014 2013 2013 2012 2011 2010 2009 Earnings: Income before income taxes $ 110.3 $ 233.8 $ 250.7 $ 306.5 $ 217.4 $ 289.9 $ 163.0 Equity losses in unconsolidated affiliates 86.9 0.6 1.2 — —

November 24, 2014 EX-1.1

$350,000,000 BOARDWALK PIPELINES, LP 4.95% Senior Notes due 2024 UNDERWRITING AGREEMENT

EX-1.1 Exhibit 1.1 Execution Version $350,000,000 BOARDWALK PIPELINES, LP 4.95% Senior Notes due 2024 UNDERWRITING AGREEMENT November 19, 2014 BARCLAYS CAPITAL INC. J.P. MORGAN SECURITIES LLC As Representatives of the several Underwriters named in Schedule 1 hereto c/o Barclays Capital Inc. 745 Seventh Avenue New York, NY 10019 J.P. Morgan Securities LLC 383 Madison Avenue New York, New York 10179

November 24, 2014 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits

8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 DATE OF REPORT November 24, 2014 (DATE OF EARLIEST EVENT REPORTED) November 19, 2014 BOARDWALK PIPELINE PARTNERS, LP (Exact name of registrant as specified in its charter) Delaware 01-32665 20-3265614 (State or other jurisdiction

November 20, 2014 CORRESP

BWP / Boardwalk Pipeline Partners L.P CORRESP - -

November 20, 2014 United States Securities and Exchange Commission Division of Corporation Finance 100 F Street, NE Washington, D.

November 20, 2014 424B2

Title of Each Class of Securities To Be Registered

Table of Contents File pursuant to Rule 424(b)(2) Registration No. 333-186768 333-186768-01 Title of Each Class of Securities To Be Registered Proposed Maximum Aggregate Offering Price Amount of Registration Fee(1) Debt Securities $350,000,000 $40,670 (1) The filing fee, calculated in accordance with Rule 457(r), has been transmitted to the SEC in connection with the securities offered from Regist

November 19, 2014 424B5

Subject to Completion, dated November 19, 2014

Table of Contents The information in this preliminary prospectus supplement is not complete and may be changed.

November 19, 2014 FWP

BOARDWALK PIPELINES, LP PRICING TERM SHEET $350,000,000 4.95% Senior Notes due 2024 Issuer: Boardwalk Pipelines, LP Fully and unconditionally guaranteed by: Boardwalk Pipeline Partners, LP Ratings* (Moody’s / S&P / Fitch): Baa3 / BB+ / BBB- Note type

FWP Filed Pursuant to Rule 433 Issuer Free Writing Prospectus dated November 19, 2014 Registration Statement No.

November 4, 2014 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ý QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2014 ¨ TRANSITION REPO

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2014 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 01-32665 BOARDW

November 3, 2014 EX-99.1

BOARDWALK ANNOUNCES THIRD QUARTER 2014 RESULTS AND QUARTERLY DISTRIBUTION OF $0.10 PER UNIT

Exhibit 99.1 News Release BOARDWALK ANNOUNCES THIRD QUARTER 2014 RESULTS AND QUARTERLY DISTRIBUTION OF $0.10 PER UNIT HOUSTON, November 3, 2014 - Boardwalk Pipeline Partners, LP, (NYSE:BWP) announced today that it has declared a quarterly cash distribution per common unit of $0.10 ($0.40 annualized) payable on November 20, 2014, to unitholders of record as of November 13, 2014. The Partnership als

November 3, 2014 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 DATE OF REPORT November 3, 2014 (DATE OF EARLIEST EVENT REPORTED) November 3, 2014 BOARDWALK PIPELINE PARTNERS, LP (Exact name of registrant as specified in its charter) Delaware 01-32665 20-3265614 (State or other jurisdiction of in

October 9, 2014 CORRESP

BWP / Boardwalk Pipeline Partners L.P CORRESP - -

October 9, 2014 United States Securities and Exchange Commission Division of Corporation Finance 100 F Street, NE Washington, D.

September 18, 2014 CORRESP

BWP / Boardwalk Pipeline Partners L.P CORRESP - -

CORRESP September 18, 2014 VIA EDGAR Jennifer Thompson Accounting Branch Chief U.S. Securities and Exchange Commission Division of Corporation Finance 100 F Street, N.E. Washington, D.C. 20549 Re: Boardwalk Pipeline Partners, LP Form 10-K for the Fiscal Year Ended December 31, 2013 Filed February 24, 2014 Form 10-Q for the Period Ended September 30, 2013 Filed October 29, 2013 File No. 1-32665 Dea

August 19, 2014 EX-99.1

1 2014 Citi 1x1 MLP/Midstream Infrastructure Conference August 2014 Southeast Market Expansion 2 Important Information Forward-looking statements disclosure Statements made at this conference or in the materials distributed in conjunction with this c

exhibit991citi1x1mlpconf 1 2014 Citi 1x1 MLP/Midstream Infrastructure Conference August 2014 Southeast Market Expansion 2 Important Information Forward-looking statements disclosure Statements made at this conference or in the materials distributed in conjunction with this conference that contain "forward-looking statements" include, but are not limited to, statements using the words “believe”, “expect”, “plan”, “intend”, “anticipate”, “estimate”, “project”, “should” and similar expressions, as well as other statements concerning our future plans, objectives, and expected performance, including statements with respect to the completion, cost, timing and financial performance of growth projects.

August 19, 2014 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 DATE OF REPORT August 19, 2014 (DATE OF EARLIEST EVENT REPORTED) August 19, 2014 BOARDWALK PIPELINE PARTNERS, LP (Exact name of registrant as specified in its charter) Delaware 01-32665 20-3265614 (State or other jurisdiction of inco

August 5, 2014 EX-10.1

Subordinated Loan Agreement dated as of July 31, 2014, between Boardwalk Pipelines, LP, as Borrower, and Boardwalk Pipelines Holding Corp., as Lender (Incorporated by reference to Exhibit 10.1 to the Registrant’s Current Report on Form 8-K filed on August 5, 2014).

EX-10.1 3 exhibit101subordinatedloan.htm EXHIBIT 10.1 EXECUTION Exhibit 10.1 SUBORDINATED LOAN AGREEMENT dated as of July 31, 2014 between Boardwalk Pipelines, LP as Borrower and Boardwalk Pipelines Holding Corp. as Lender 1 EXECUTION TABLE OF CONTENTS ARTICLE I DEFINITIONS; CONSTRUCTION 1 SECTION 1.1DEFINITIONS 1 SECTION 1.2OTHER DEFINITIONAL PROVISIONS 5 SECTION 1.3ACCOUNTING TERMS AND PRINCIPLE

August 5, 2014 EX-4.1

Subordination Agreement, dated as of July 31, 2014, among Boardwalk Pipelines Holding Corp., as Subordinated Creditor, Wells Fargo Bank N.A., as Senior Creditor Representative, and Boardwalk Pipelines, LP, as Borrower (Incorporated by reference to Exhibit 4.1 to the Registrant’s Current Report on Form 8-K filed on August 5, 2014).

EXECUTION Exhibit 4.1 SUBORDINATION AGREEMENT dated as of July 31, 2014 among Boardwalk Pipelines Holding Corp. as Subordinated Creditor Wells Fargo Bank, N.A. as Senior Creditor Representative and Boardwalk Pipelines, LP as Borrower 1 EXECUTION TABLE OF CONTENTS ARTICLE I DEFINITIONS 1 SECTION 1.1DEFINITIONS 1 SECTION 1.2OTHER DEFINITIONAL PROVISIONS. 3 ARTICLE II SUBORDINATION 3 SECTION 2.1SUBOR

August 5, 2014 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 DATE OF REPORT August 5, 2014 (DATE OF EARLIEST EVENT REPORTED) July 31, 2014 BOARDWALK PIPELINE PARTNERS, LP (Exact name of registrant as specified in its charter) Delaware 01-32665 20-3265614 (State or other jurisdiction of incorpo

August 4, 2014 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 DATE OF REPORT August 4, 2014 (DATE OF EARLIEST EVENT REPORTED) August 4, 2014 BOARDWALK PIPELINE PARTNERS, LP (Exact name of registrant as specified in its charter) Delaware 01-32665 20-3265614 (State or other jurisdiction of incorp

August 4, 2014 EX-99.1

BOARDWALK ANNOUNCES SECOND QUARTER 2014 RESULTS AND QUARTERLY DISTRIBUTION OF $0.10 PER UNIT

Exhibit 99.1 News Release BOARDWALK ANNOUNCES SECOND QUARTER 2014 RESULTS AND QUARTERLY DISTRIBUTION OF $0.10 PER UNIT HOUSTON, August 4, 2014 - Boardwalk Pipeline Partners, LP, (NYSE:BWP) announced today that it has declared a quarterly cash distribution per common unit of $0.10 ($0.40 annualized) payable on August 21, 2014, to unitholders of record as of August 14, 2014. The Partnership also ann

August 4, 2014 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ý QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2014 ¨ TRANSITION REPORT PU

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2014 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 01-32665 BOARDWALK P

May 20, 2014 8-K

Regulation FD Disclosure, Financial Statements and Exhibits - 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 DATE OF REPORT May 20, 2014 (DATE OF EARLIEST EVENT REPORTED) May 20, 2014 BOARDWALK PIPELINE PARTNERS, LP (Exact name of registrant as specified in its charter) Delaware 01-32665 20-3265614 (State or other jurisdiction of incorporat

May 20, 2014 EX-99.1

1 NAPTP 2014 MLP Annual Investor Conference May 2014 Rodrigue Compressor Station 2 Important Information Forward-looking statements disclosure Statements made at this conference or in the materials distributed in conjunction with this conference that

naptpfinal051914 1 NAPTP 2014 MLP Annual Investor Conference May 2014 Rodrigue Compressor Station 2 Important Information Forward-looking statements disclosure Statements made at this conference or in the materials distributed in conjunction with this conference that contain "forward-looking statements" include, but are not limited to, statements using the words “believe”, “expect”, “plan”, “intend”, “anticipate”, “estimate”, “project”, “should” and similar expressions, as well as other statements concerning our future plans, objectives, and expected performance, including statements with respect to the completion, cost, timing and financial performance of growth projects.

April 29, 2014 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ý QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2014 ¨ TRANSITION REPORT P

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ý QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2014 OR ¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 01-32665 BOARDWALK

April 28, 2014 EX-99.1

BOARDWALK ANNOUNCES FIRST QUARTER 2014 RESULTS AND QUARTERLY DISTRIBUTION OF $0.10 PER UNIT

Exhibit 99.1 News Release BOARDWALK ANNOUNCES FIRST QUARTER 2014 RESULTS AND QUARTERLY DISTRIBUTION OF $0.10 PER UNIT HOUSTON, April 28, 2014 - Boardwalk Pipeline Partners, LP, (NYSE:BWP) announced today that it has declared a quarterly cash distribution per common unit of $0.10 ($0.40 annualized) payable on May 15, 2014, to unitholders of record as of May 8, 2014. The Partnership also announced i

April 28, 2014 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition - 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 DATE OF REPORT April 28, 2014 (DATE OF EARLIEST EVENT REPORTED) April 28, 2014 BOARDWALK PIPELINE PARTNERS, LP (Exact name of registrant as specified in its charter) Delaware 01-32665 20-3265614 (State or other jurisdiction of incorp

April 8, 2014 SC 13G

BWP / Boardwalk Pipeline Partners L.P / BALYASNY ASSET MANAGEMENT LLC - SC 13G Passive Investment

SC 13G SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 BOARDWALK PIPELINE PARTNERS, L.P. (Name of Issuer) COMMON STOCK (Title of Class of Securities) 096627104 (CUSIP Number) April 7, 2014 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

February 24, 2014 EX-21.1

BOARDWALK PIPELINE PARTNERS, LP Subsidiaries of the Registrant December 31, 2013 Name of Subsidiary Organized Under Laws of Business Names Boardwalk Operating GP, LLC Delaware Boardwalk Pipelines, LP Delaware Texas Gas Transmission, LLC Delaware Texa

EXHIBIT 21.1 BOARDWALK PIPELINE PARTNERS, LP Subsidiaries of the Registrant December 31, 2013 Name of Subsidiary Organized Under Laws of Business Names Boardwalk Operating GP, LLC Delaware Boardwalk Pipelines, LP Delaware Texas Gas Transmission, LLC Delaware Texas Gas Gulf South Pipeline Company, LP Delaware Gulf South GS Pipeline Company, LLC Delaware Gulf Crossing Pipeline Company LLC Delaware G

February 24, 2014 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K (Mark One) ý ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2013 o TRANSITION REPORT PURSUA

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K (Mark One) ý ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2013 OR o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 01-32665 BOARDWALK PIPEL

February 24, 2014 EX-12.1

BOARDWALK PIPELINE PARTNERS, LP COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES (Millions, except ratios) For the Year Ended December 31, 2013 2012 2011 2010 2009 Earnings: Income before income taxes $ 250.7 $ 306.5 $ 217.4 $ 289.9 $ 163.0 Equity l

Exhibit 12.1 BOARDWALK PIPELINE PARTNERS, LP COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES (Millions, except ratios) For the Year Ended December 31, 2013 2012 2011 2010 2009 Earnings: Income before income taxes $ 250.7 $ 306.5 $ 217.4 $ 289.9 $ 163.0 Equity losses in unconsolidated affiliates 1.2 — — — — Net loss attributable to noncontrolling interests 3.5 — — — — Amortization of capitalized

February 24, 2014 EX-10.12

Form of Retention Payment agreement. (Incorporated by reference to Exhibit 10.12 to the Registrant’s Annual Report on Form 10-K filed on February 24, 2014).

Exhibit 10.12 Execution Version , 2014 [Mr.][Ms.] Re: Retention Payment Dear : Boardwalk Pipeline Partners, LP (the “Partnership”) recognizes and appreciates your contribution to the continuing success of the Partnership and its affiliates. Accordingly, the Partnership would like to offer you an opportunity to earn a special retention payment equal to $[•] (the “Retention Payment”). Except as othe

February 12, 2014 EX-10.1

Form of Grant for Cash Bonus Awards under the Boardwalk Pipeline Partners Unit Appreciation Rights and Cash Bonus Plan (Incorporated by reference to Exhibit 10.1 to the Registrant’s Current Report on Form 8-K filed on February 12, 2014).

Execution Version Exhibit 10.1 Boardwalk Pipeline Partners Unit Appreciation Rights and Cash Bonus Plan Cash Bonus Grant Agreement Grantee: Grant Date: , 20 1. Grant of Cash Bonus. Boardwalk Pipeline Partners, LP (the “Partnership”) hereby grants you a contingent Cash Bonus under the Boardwalk Pipeline Partners Unit Appreciation Rights and Cash Bonus Plan (as amended, restated, supplemented or oth

February 12, 2014 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits - BWP 8-K EXEC COMP

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 DATE OF REPORT February 12, 2014 (DATE OF EARLIEST EVENT REPORTED) February 6, 2014 BOARDWALK PIPELINE PARTNERS, LP (Exact name of registrant as specified in its charter) Delaware 01-32665 20-3265614 (State or other jurisdiction of i

February 10, 2014 EX-99.1

BOARDWALK ANNOUNCES FOURTH QUARTER 2013 RESULTS AND ANNOUNCES QUARTERLY DISTRIBUTION OF $0.10 PER UNIT

Exhibit 99.1 News Release BOARDWALK ANNOUNCES FOURTH QUARTER 2013 RESULTS AND ANNOUNCES QUARTERLY DISTRIBUTION OF $0.10 PER UNIT HOUSTON, February 10, 2014 - Boardwalk Pipeline Partners, LP, (NYSE:BWP) announced today that it has declared a quarterly cash distribution per common unit of $0.10 ($0.40 annualized) payable on February 27, 2014, to unitholders of record as of February 20, 2014. The red

February 10, 2014 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition - 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 DATE OF REPORT February 10, 2014 (DATE OF EARLIEST EVENT REPORTED) February 10, 2014 BOARDWALK PIPELINE PARTNERS, LP (Exact name of registrant as specified in its charter) Delaware 01-32665 20-3265614 (State or other jurisdiction of

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