HDSN / Hudson Technologies, Inc. - Документы SEC, Годовой отчет, Доверенное заявление

Хадсон Технологии, Инк.
US ˙ NasdaqCM ˙ US4441441098

Основная статистика
CIK 925528
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 Hudson Technologies, Inc.
SEC Filings (Chronological Order)
На этой странице представлен полный хронологический список документов SEC, за исключением документов о собственности, которые мы предоставляем в других местах.
August 1, 2025 EX-10.1

Agreement dated July 31, 2025 between Hudson Technologies, Inc., Hudson Technologies Company and Brian J. Bertaux*

Exhibit 10.1 AGREEMENT THIS AGREEMENT (the “Agreement”) is made as of the 31st day of July, 2025 by and between Hudson Technologies, Inc., 300 Tice Boulevard, Suite 290, Woodcliff Lake, New Jersey 07677, and Hudson Technologies Company, 300 Tice Boulevard, Suite 290, Woodcliff Lake, New Jersey 07677 (hereinafter Hudson Technologies, Inc. and Hudson Technologies Company are collectively referred to

August 1, 2025 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q ☒ 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 PURSUANT TO SEC

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q ☒ 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 1-13412 Hudson Technologies, Inc.

July 30, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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) July 30, 2025 Hudson Technologies, Inc.

July 30, 2025 EX-99.1

HUDSON TECHNOLOGIES REPORTS SECOND quarter 2025 reSults

Exhibit 99.1 HUDSON TECHNOLOGIES REPORTS SECOND quarter 2025 reSults · Second quarter revenue of $72.8 million; Gross margin of 31% · Net income of $10.2 million or $0.23 per diluted share · Reports $84.3 million in cash and no debt at June 30, 2025 WOODCLIFF LAKE, NJ – July 30, 2025 – Hudson Technologies, Inc. (NASDAQ: HDSN) announced results for the second quarter and six months ended June 30, 2

June 23, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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 23, 2025 Hudson Technologies, Inc.

June 23, 2025 EX-10.1

Third Amendment to Amended and Restated Credit Agreement dated June 23, 2025 by and among Wells Fargo Bank, National Association, as Agent, Hudson Technologies, Inc., and the Borrowers and Lenders party thereto

  Exhibit 10.1   THIRD AMENDMENT TO AMENDED AND RESTATED CREDIT AGREEMENT   THIS THIRD AMENDMENT TO AMENDED AND RESTATED CREDIT AGREEMENT (this “Amendment”), dated as of June 23, 2025, is entered into by and among WELLS FARGO BANK, NATIONAL ASSOCIATION, a national banking association (“Wells Fargo”), in its capacity as agent for the Lender Group and the Bank Product Providers (in such capacity, to

June 12, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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 11, 2025 Hudson Technologies, Inc.

May 9, 2025 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q ☒ 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 PURSUANT TO SE

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q ☒ 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 1-13412 Hudson Technologies, Inc.

May 7, 2025 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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 7, 2025 Hudson Technologies, Inc.

May 7, 2025 EX-99.1

HUDSON TECHNOLOGIES REPORTS first quarter 2025 reSults

Exhibit 99.1 HUDSON TECHNOLOGIES REPORTS first quarter 2025 reSults · First quarter revenue reflects continued low refrigerant market price landscape · Reports $81 million in cash and no debt at March 31, 2025 · Continues share repurchase program WOODCLIFF LAKE, NJ – May 7, 2025 – Hudson Technologies, Inc. (NASDAQ: HDSN) announced results for the first quarter ended March 31, 2025. Brian F. Colema

April 25, 2025 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant x Filed by a Party other than the Registrant ¨ Check the appropriate box: ¨ Preliminary Proxy Statement ¨ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ¨ Defin

April 25, 2025 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.    )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.

March 12, 2025 EX-10.44

Form of Incentive Stock Option Agreement under the 2024 Stock Incentive Plan with full vesting upon issuance (31)*

Exhibit 10.44 INCENTIVE STOCK OPTION AGREEMENT HUDSON TECHNOLOGIES, INC. AGREEMENT made as of the (insert date) (the “Grant Date”) between Hudson Technologies, Inc. (the “Company”), a New York corporation, having a principal place of business at 300 Tice Boulevard, Suite 290, Woodcliff Lake, New Jersey 07677, and (insert name of Grantee) (the “Grantee”). WHEREAS, the Company desires to grant to th

March 12, 2025 EX-10.45

Form of Incentive Stock Option Agreement under the 2024 Stock Incentive Plan with vesting in equal installments over a specified period of time (31)*

Exhibit 10.45 INCENTIVE STOCK OPTION AGREEMENT HUDSON TECHNOLOGIES, INC. AGREEMENT made as of the (insert date) (the “Grant Date”) between Hudson Technologies, Inc. (the “Company”), a New York corporation, having a principal place of business at 300 Tice Boulevard, Suite 290, Woodcliff Lake, New Jersey 07677, and (insert name of Grantee) (the “Grantee”). WHEREAS, the Company desires to grant to th

March 12, 2025 EX-10.46

Form of Non-Qualified Stock Option Agreement under the 2024 Stock Incentive Plan with full vesting upon issuance (31)*

Exhibit 10.46 NON-QUALIFIED STOCK OPTION AGREEMENT HUDSON TECHNOLOGIES, INC. AGREEMENT made as of (insert date) (the “Grant Date”) between Hudson Technologies, Inc. (the “Company”), a New York corporation, having a principal place of business at 300 Tice Boulevard, Suite 290, Woodcliff Lake, New Jersey 07677, and (insert name of Grantee) (the “Grantee”). WHEREAS, the Company desires to grant to th

March 12, 2025 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-K ☒ 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 PURSUANT TO SECTIO

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-K ☒ 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 1-13412 Hudson Technologies, Inc.

March 12, 2025 EX-21

Subsidiaries of the Company. (31)

Exhibit 21: Subsidiaries of the Registrant Hudson Technologies Company incorporated in the State of Delaware Hudson Holdings, Inc.

March 12, 2025 EX-10.48

Form of Non-Qualified Stock Option Agreement under the 2024 Stock Incentive Plan with conditional vesting provisions (31)*

Exhibit 10.48 NON-QUALIFIED STOCK OPTION AGREEMENT HUDSON TECHNOLOGIES, INC. AGREEMENT made as of (grant date) (the “Grant Date”) between Hudson Technologies, Inc. (the “Company”), a New York corporation, having a principal place of business at 300 Tice Boulevard, Suite 290, Woodcliff Lake, New Jersey 07677, and (insert name of Grantee) (the “Grantee”). WHEREAS, the Company desires to grant to the

March 12, 2025 EX-10.47

Form of Non-Qualified Stock Option Agreement under the 2024 Stock Incentive Plan with vesting in equal installments over a specified period of time (31)*

Exhibit 10.47 NON-QUALIFIED STOCK OPTION AGREEMENT HUDSON TECHNOLOGIES, INC. AGREEMENT made as of (insert date) (the “Grant Date”) between Hudson Technologies, Inc. (the “Company”), a New York corporation, having a principal place of business at 300 Tice Boulevard, Suite 290, Woodcliff Lake, New Jersey 07677, and (insert name of Grantee) (the “Grantee”). WHEREAS, the Company desires to grant to th

March 6, 2025 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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) March 6, 2025 Hudson Technologies, Inc.

March 6, 2025 EX-99.1

HUDSON TECHNOLOGIES REPORTS fourth quarter and YEAR END 2024 reSults

Exhibit 99.1 HUDSON TECHNOLOGIES REPORTS fourth quarter and YEAR END 2024 reSults · Strong unlevered balance sheet with $70.1 million in cash and no debt · Repurchased $8.1 million of common stock in 2024 · Increased refrigerant reclamation volume by 18% in 2024 WOODCLIFF LAKE, NJ – March 6, 2025 – Hudson Technologies, Inc. (NASDAQ: HDSN) announced results for the fourth quarter and year ended Dec

November 8, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q ☒ 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 REPORT PURSUANT T

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q ☒ 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 1-13412 Hudson Technologies, Inc.

November 4, 2024 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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) November 4, 2024 Hudson Technologies, Inc.

November 4, 2024 EX-99.1

HUDSON TECHNOLOGIES REPORTS THIRD quarter 2024 reSults

Exhibit 99.1 HUDSON TECHNOLOGIES REPORTS THIRD quarter 2024 reSults · Third Quarter Revenue of $61.9 million · Net income of $7.8 million or $0.17 per diluted share · Strengthened balance sheet with $56.5 million in cash and no debt · Repurchased $2.6 million of common stock during the third quarter WOODCLIFF LAKE, NJ – November 4, 2024 – Hudson Technologies, Inc. (NASDAQ: HDSN) announced results

October 25, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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) October 23, 2024 Hudson Technologies, Inc.

October 25, 2024 EX-99.1

HUDSON TECHNOLOGIES Board of Directors approves increase to company’s share repurchase Program

Exhibit 99.1 HUDSON TECHNOLOGIES Board of Directors approves increase to company’s share repurchase Program WOODCLIFF LAKE, NJ – October 25, 2024 – Hudson Technologies, Inc. (NASDAQ: HDSN) announced that its board of directors has approved an increase to the Company’s share repurchase program. Hudson may now purchase up to $20 million in shares of its common stock, consisting of up to $10 million

October 25, 2024 EX-10.1

Second Amendment to Amended and Restated Credit Agreement dated October 23, 2024 by and among Wells Fargo Bank, National Association, as Agent, Hudson Technologies, Inc., and the Borrowers and Lenders party thereto

Exhibit 10.1 SECOND AMENDMENT TO AMENDED AND RESTATED CREDIT AGREEMENT THIS SECOND AMENDMENT TO AMENDED AND RESTATED CREDIT AGREEMENT (this “Amendment”), dated as of October 23, 2024, is entered into by and among WELLS FARGO BANK, NATIONAL ASSOCIATION, a national banking association (“Wells Fargo”), in its capacity as agent for the Lender Group and the Bank Product Providers (in such capacity, tog

August 23, 2024 EX-FILING FEES

Filing Fee Table

Exhibit 107 CALCULATION OF FILING FEE TABLE FORM S-8 (Form Type) HUDSON TECHNOLOGIES, INC.

August 23, 2024 EX-4.12

Hudson Technologies, Inc. 2024 Stock Incentive Plan (29)*

Exhibit 4.12 HUDSON TECHNOLOGIES, INC. 2024 STOCK INCENTIVE PLAN 1.            Purpose The 2024 Hudson Technologies, Inc. Stock Incentive Plan (the "Plan") is intended to provide incentives which will attract, retain, motivate and reward highly competent persons as non-employee directors, executive officers and other employees of, or consultants and advisors to, Hudson Technologies, Inc. (the "Com

August 23, 2024 S-8

As filed with the Securities and Exchange Commission on August 23, 2024

As filed with the Securities and Exchange Commission on August 23, 2024 Registration Statement No.

August 9, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q ☒ 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 PURSUANT TO SEC

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q ☒ 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 1-13412 Hudson Technologies, Inc.

August 6, 2024 8-K

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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 6, 2024 Hudson Technologies, Inc.

August 6, 2024 EX-99.1

HUDSON TECHNOLOGIES REPORTS SECOND quarter 2024 reSults Board Authorizes Share Repurchase Program

Exhibit 99.1 HUDSON TECHNOLOGIES REPORTS SECOND quarter 2024 reSults Board Authorizes Share Repurchase Program WOODCLIFF LAKE, NJ – August 6, 2024 – Hudson Technologies, Inc. (NASDAQ: HDSN) announced results for the second quarter and six months ended June 30, 2024. For the quarter ended June 30, 2024, Hudson reported revenues of $75.3 million, a decrease of 17% compared to revenues of $90.5 milli

July 30, 2024 EX-99.1

HUDSON TECHNOLOGIES ANNOUNCES APPOINTMENT OF BRIAN J. BERTAUX AS CHIEF FINANCIAL OFFICER

Exhibit 99.1 HUDSON TECHNOLOGIES ANNOUNCES APPOINTMENT OF BRIAN J. BERTAUX AS CHIEF FINANCIAL OFFICER Woodcliff Lake, NJ – July 30, 2024– Hudson Technologies, Inc. (NASDAQ: HDSN) a leading provider of innovative and sustainable refrigerant products and services to the Heating, Ventilation, Air Conditioning, and Refrigeration industry – and one of the nation’s largest refrigerant reclaimers – today

July 30, 2024 8-K

Regulation FD Disclosure, Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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) July 30, 2024 Hudson Technologies, Inc.

June 13, 2024 8-K

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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 12, 2024 Hudson Technologies, Inc.

June 7, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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 6, 2024 Hudson Technologies, Inc.

June 7, 2024 EX-10.2

First Amendment to Amended and Restated Credit Agreement and Limited Consent dated June 6, 2024 by and among Wells Fargo Bank, National Association, as Agent, Hudson Technologies, Inc., and the Borrowers and Lenders party thereto (1)

Exhibit 10.2 EXECUTION VERSION FIRST AMENDMENT TO AMENDED AND RESTATED CREDIT AGREEMENT AND LIMITED CONSENT THIS FIRST AMENDMENT TO AMENDED AND RESTATED CREDIT AGREEMENT AND LIMITED CONSENT (this “Amendment”), dated as of June 6, 2024, is entered into by and among WELLS FARGO BANK, NATIONAL ASSOCIATION, a national banking association (“Wells Fargo”), in its capacity as agent for the Lender Group a

June 7, 2024 EX-99.1

HUDSON TECHNOLOGIES ANNOUNCES ACQUISITION OF USA REFRIGERANTS

Exhibit 99.1 HUDSON TECHNOLOGIES ANNOUNCES ACQUISITION OF USA REFRIGERANTS Woodcliff Lake, NJ – June 7, 2024– Hudson Technologies, Inc. (NASDAQ: HDSN) today announced the acquisition of substantially all of the assets of USA United Suppliers of America, Inc. d/b/a USA Refrigerants (“USA”) for $20.7 million, subject to customary post-closing adjustments, and up to an additional $2 million in potent

June 7, 2024 EX-10.1

Asset Purchase Agreement dated June 6, 2024 by and among Hudson Technologies Company, USA United Suppliers of America, Inc. (d/b/a USA Refrigerants), B&B Jobber Services, Inc., and the equityholders signatory thereto (1)

Exhibit 10.1 EXECUTION COPY ASSET PURCHASE AGREEMENT This Asset Purchase Agreement (this “Agreement”), dated as of June 6, 2024, is entered into by and among Hudson Technologies Company, a Delaware corporation (“Buyer”), USA United Suppliers of America, Inc. (d/b/a USA Refrigerants), a Florida corporation (“USAR”), B&B Jobber Services, Inc., a Florida corporation (“B&B” and, collectively with USAR

May 8, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q ☒ 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 PURSUANT TO SE

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q ☒ 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 1-13412 Hudson Technologies, Inc.

May 1, 2024 EX-99.1

HUDSON TECHNOLOGIES REPORTS FIRST quarter 2024 reSults

Exhibit 99.1 HUDSON TECHNOLOGIES REPORTS FIRST quarter 2024 reSults WOODCLIFF LAKE, NJ – MAY 1, 2024 – Hudson Technologies, Inc. (NASDAQ: HDSN) announced results for the first quarter ended March 31, 2024. For the quarter ended March 31, 2024, Hudson reported revenues of $65.3 million, a decrease of 15% compared to revenues of $77.2 million in the comparable 2023 period. The decrease is primarily

May 1, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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 1, 2024 Hudson Technologies, Inc.

April 25, 2024 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.    )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.

April 25, 2024 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant x Filed by a Party other than the Registrant ¨ Check the appropriate box: ¨ Preliminary Proxy Statement ¨ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ¨ Defin

March 14, 2024 EX-21

Subsidiaries of the Company. (28)

Exhibit 21: Subsidiaries of the Registrant Hudson Technologies Company incorporated in the State of Delaware Hudson Holdings, Inc.

March 14, 2024 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-K ☒ 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 PURSUANT TO SECTIO

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-K ☒ 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 1-13412 Hudson Technologies, Inc.

March 14, 2024 EX-97

Hudson Technologies, Inc. Clawback Policy (27)

Exhibit 97 HUDSON TECHNOLOGIES, INC. CLAWBACK POLICY The Board of Directors (the “Board”) of Hudson Technologies, Inc. (the “Company”) believes that it is in the best interests of the Company and its shareholders to adopt this Clawback Policy (the “Policy”), which provides for the recovery of certain incentive compensation in the event of an Accounting Restatement (as defined below). This Policy i

March 6, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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) March 6, 2024 Hudson Technologies, Inc.

March 6, 2024 EX-99.1

HUDSON TECHNOLOGIES REPORTS FOURTH quarter ANd YEAR END 2023 reSults

Exhibit 99.1 HUDSON TECHNOLOGIES REPORTS FOURTH quarter ANd YEAR END 2023 reSults WOODCLIFF LAKE, NJ – MARCH 6, 2024 – Hudson Technologies, Inc. (NASDAQ: HDSN) announced results for the fourth quarter and year ended December 31, 2023. For the quarter ended December 31, 2023, Hudson reported revenues of $44.9 million, a decrease of 5% compared to revenues of $47.4 million in the comparable 2022 per

February 14, 2024 SC 13G/A

HDSN / Hudson Technologies, Inc. / Riva Ridge Capital Management LP Passive Investment

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

November 7, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q ☒ 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 REPORT PURSUANT T

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q ☒ 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 1-13412 Hudson Technologies, Inc.

November 1, 2023 EX-99.1

HUDSON TECHNOLOGIES REPORTS third quarter RESULTS

Exhibit 99.1 HUDSON TECHNOLOGIES REPORTS third quarter RESULTS WOODCLIFF LAKE, NJ – november 1, 2023 – Hudson Technologies, Inc. (NASDAQ: HDSN) announced results for the third quarter ended September 30, 2023. For the quarter ended September 30, 2023, Hudson reported revenues of $76.5 million, a decrease of 15% compared to revenues of $89.5 million in the third quarter of 2022. The decrease is pri

November 1, 2023 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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) November 1, 2023 Hudson Technologies, Inc.

October 12, 2023 EX-99.1

HUDSON TECHNOLOGIES ANNOUNCES APPOINTMENT OF KAthleen l. houghton to board of directors

Exhibit 99.1 HUDSON TECHNOLOGIES ANNOUNCES APPOINTMENT OF KAthleen l. houghton to board of directors WoodclifF lake, nj – October 12, 2023 – Hudson Technologies, Inc. (NASDAQ: HDSN), a leading provider of innovative and sustainable refrigerant products and services to the Heating, Ventilation, Air Conditioning, and Refrigeration industry – and one of the nation’s largest refrigerant reclaimers – t

October 12, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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) October 11, 2023 Hudson Technologies, Inc.

August 22, 2023 8-K

Regulation FD Disclosure, Termination of a Material Definitive Agreement, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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 21, 2023 Hudson Technologies, Inc.

August 22, 2023 EX-99.1

HUDSON TECHNOLOGIES ANNOUNCES FULL REPAYMENT OF OUTSTANDING TERM DEBT

Exhibit 99.1 HUDSON TECHNOLOGIES ANNOUNCES FULL REPAYMENT OF OUTSTANDING TERM DEBT WOODCLIFF LAKE, NJ – August 21, 2023 – Hudson Technologies, Inc. (NASDAQ: HDSN) a leading provider of innovative and sustainable refrigerant products and services to the Heating, Ventilation, Air Conditioning, and Refrigeration industry–and one of the nation’s largest refrigerant reclaimers–today announced that the

August 8, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q ☒ 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 PURSUANT TO SEC

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q ☒ 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 1-13412 Hudson Technologies, Inc.

August 2, 2023 EX-99.1

HUDSON TECHNOLOGIES REPORTS Second QUARTER 2023 Results

Exhibit 99.1 HUDSON TECHNOLOGIES REPORTS Second QUARTER 2023 Results WOODCLIFF LAKE, NJ – August 2, 2023 – Hudson Technologies, Inc. (NASDAQ: HDSN) announced results for the second quarter ended June 30, 2023. For the quarter ended June 30, 2023, Hudson reported revenues of $90.5 million, a decrease of 13% compared to revenues of $103.9 million in the second quarter of 2022. The decrease is primar

August 2, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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 2, 2023 Hudson Technologies, Inc.

June 8, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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 7, 2023 Hudson Technologies, Inc.

May 9, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q ☒ 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 PURSUANT TO SE

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q ☒ 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 1-13412 Hudson Technologies, Inc.

May 3, 2023 EX-99.1

HUDSON TECHNOLOGIES REPORTS FIrst QUARTER 2023 Results

Exhibit 99.1 HUDSON TECHNOLOGIES REPORTS FIrst QUARTER 2023 Results WOODCLIFF LAKE, NJ – MAY 3, 2023 – Hudson Technologies, Inc. (NASDAQ: HDSN) announced results for the first quarter ended March 31, 2023. For the quarter ended March 31, 2023, Hudson reported revenues of $77.2 million, a decrease of 8% compared to revenues of $84.3 million in the first quarter of 2022. The decrease is primarily re

May 3, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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 3, 2023 Hudson Technologies, Inc.

April 26, 2023 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.     )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.

April 26, 2023 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant x Filed by a Party other than the Registrant ¨ Check the appropriate box: ¨ Preliminary Proxy Statement ¨ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ¨ Defin

March 14, 2023 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-K ☒ 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 PURSUANT TO SECTIO

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-K ☒ 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 1-13412 Hudson Technologies, Inc.

March 14, 2023 EX-21

Subsidiaries of the Company. (28)

Exhibit 21: Subsidiaries of the Registrant Hudson Technologies Company incorporated in the State of Delaware Hudson Holdings, Inc.

March 8, 2023 EX-99.1

HUDSON TECHNOLOGIES REPORTS FOURTH QUARTER Revenue Growth of 26%; Record Full YEAR 2022 revenue of $325.2 Million

Exhibit 99.1 HUDSON TECHNOLOGIES REPORTS FOURTH QUARTER Revenue Growth of 26%; Record Full YEAR 2022 revenue of $325.2 Million WOODCLIFF LAKE, NJ – MARCH 8, 2023 – Hudson Technologies, Inc. (NASDAQ: HDSN) announced results for the fourth quarter and year ended December 31, 2022. For the quarter ended December 31, 2022, Hudson reported revenues of $47.4 million, an increase of 26% compared to reven

March 8, 2023 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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) March 8, 2023 Hudson Technologies, Inc.

February 23, 2023 8-K/A

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, DC 20549 FORM 8-K/A (Amendment No.

February 15, 2023 SC 13G/A

HDSN / Hudson Technologies, Inc. / ArrowMark Colorado Holdings LLC Passive Investment

SC 13G/A 1 arrowmark-hdsn123122a6.htm UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 13G/A Under the Securities Exchange Act of 1934 (Amendment No. 6)* Hudson Technologies, Inc. (Name of Issuer) Common Stock, $0.01 par value (Title of Class of Securities) 444144109 (CUSIP Number) December 31, 2022 (Date of Event Which Requires Filing of this Statement) Check the app

February 2, 2023 SC 13G/A

HDSN / Hudson Technologies, Inc. / Riva Ridge Capital Management LP Passive Investment

SC 13G/A 1 d993243013g-a.htm UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 2)* Hudson Technologies, Inc. (Name of Issuer) Common Stock, $0.01 par value (Title of Class of Securities) 444144109 (CUSIP Number) December 31, 2022 (Date of Event Which Requires Filing of this Statement) Check the appropriate bo

January 19, 2023 CORRESP

HUDSON TECHNOLOGIES, INC. 300 Tice Boulevard, Suite 290 Woodcliff Lake, NJ 07677 845-735-6000 (Phone)

HUDSON TECHNOLOGIES, INC. 300 Tice Boulevard, Suite 290 Woodcliff Lake, NJ 07677 845-735-6000 (Phone) January 19, 2023 VIA EDGAR Division of Corporation Finance U.S. Securities and Exchange Commission 100 F Street NE Washington, DC 20549 Re: HUDSON TECHNOLOGIES, INC. (the “Company”) Registration Statement on Form S-3 (File No. 333-269221) Ladies and Gentlemen: Pursuant to Rule 461 under the Securi

January 13, 2023 EX-4.12

Form of Indenture

Exhibit 4.12 HUDSON TECHNOLOGIES, INC. AND Trustee INDENTURE Dated as of Debt Securities Reconciliation and tie between Trust Indenture Act of 1939, as amended, and the Indenture Trust Indenture Act Section Indenture Section (S)310(a)(1) 6.8 (a)(2) 6.8 (b) 6.9 (S)312(a) 7.1 (b) 7.2 (c) 7.2 (S)313(a) 7.3 (b)(2) 7.3 (c) 7.3 (d) 7.3 (S)314(a) 7.4 (c)(1) 1.2 (c)(2) 1.2 (e) 1.2 (f) 1.2 (S)316(a) (last

January 13, 2023 EX-FILING FEES

Filing Fee Table

Exhibit 107 Calculation of Filing Fee Tables Form S-3 (Form Type) Hudson Technologies, Inc.

January 13, 2023 S-3

As filed with the Securities and Exchange Commission on January 13, 2023

S-3 1 tm231653-1s3.htm S-3 TABLE OF CONTENTS As filed with the Securities and Exchange Commission on January 13, 2023 Registration No. 333-       UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM S-3 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 HUDSON TECHNOLOGIES, INC. (Exact name of registrant as specified in its charter) New York 13-3641539 (State or other ju

November 8, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q ☒ 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 REPORT PURSUANT T

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q ☒ 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 1-13412 Hudson Technologies, Inc.

November 2, 2022 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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) November 2, 2022 Hudson Technologies, Inc.

November 2, 2022 EX-99.1

HUDSON TECHNOLOGIES REPORTS record THIRD Quarter 2022 reSults

Exhibit 99.1 HUDSON TECHNOLOGIES REPORTS record THIRD Quarter 2022 reSults WoodclifF lake, nj ? November 2, 2022 ? Hudson Technologies, Inc. (NASDAQ: HDSN) announced results for the third quarter ended September 30, 2022. For the quarter ended September 30, 2022, Hudson reported revenues of $89.5 million, an increase of 48% compared to revenues of $60.6 million in the comparable 2021 period. Third

October 3, 2022 8-K

Regulation FD Disclosure, Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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) September 30, 2022 Hudson Technologies, Inc.

October 3, 2022 EX-99.1

HUDSON TECHNOLOGIES Appoints Nicole bulgarino and Loan Mansy to board of directors

Exhibit 99.1 HUDSON TECHNOLOGIES Appoints Nicole bulgarino and Loan Mansy to board of directors WoodclifF lake, nj ? October 3, 2022 ? Hudson Technologies, Inc. (NASDAQ: HDSN), a leading provider of innovative and sustainable refrigerant products and services to the Heating, Ventilation, Air Conditioning, and Refrigeration industry ? and one of the nation?s largest refrigerant reclaimers ? today a

August 8, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q ☒ 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 PURSUANT TO SEC

Table of Contents ? ? ? UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 ? FORM 10-Q ? ? 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 1-13412 ? Hudson Technologies, Inc.

August 3, 2022 EX-99.1

HUDSON TECHNOLOGIES REPORTS record Second Quarter 2022 reSults; raises 2022 FORECAST and PROVIDES update ON longer-term Targets

Exhibit 99.1 HUDSON TECHNOLOGIES REPORTS record Second Quarter 2022 reSults; raises 2022 FORECAST and PROVIDES update ON longer-term Targets WoodclifF lake, nj ? August 3, 2022 ? Hudson Technologies, Inc. (NASDAQ: HDSN) announced results for the second quarter ended June 30, 2022. For the quarter ended June 30, 2022, Hudson reported revenues of $103.9 million, an increase of 72% compared to revenu

August 3, 2022 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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 3, 2022 Hudson Technologies, Inc.

June 10, 2022 8-K

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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 9, 2022 Hudson Technologies, Inc.

May 10, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q ☒ 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 PURSUANT TO SE

Table of Contents ? ? ? UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 ? FORM 10-Q ? ? 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 1-13412 ? Hudson Technologies, Inc.

May 4, 2022 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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 4, 2022 Hudson Technologies, Inc.

May 4, 2022 EX-99.1

HUDSON TECHNOLOGIES REPORTS record First Quarter 2022 reSults

Exhibit 99.1 HUDSON TECHNOLOGIES REPORTS record First Quarter 2022 reSults WoodclifF lake, nj ? MAy 4, 2022 ? Hudson Technologies, Inc. (NASDAQ: HDSN) announced results for the first quarter ended March 31, 2022. For the quarter ended March 31, 2022, Hudson reported revenues of $84.3 million, an increase of 149% compared to revenues of $33.8 million in the comparable 2021 period. First quarter rev

April 26, 2022 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant x Filed by a Party other than the Registrant ? Check the appropriate box: ? Preliminary Proxy Statement ? Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ? Defin

April 26, 2022 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.     )

? UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.

March 24, 2022 EX-21

Subsidiaries of the Company. (36)

Exhibit 21: Subsidiaries of the Registrant Hudson Technologies Company incorporated in the State of Delaware Hudson Holdings, Inc.

March 24, 2022 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-K ☒ 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 PURSUANT TO SECTIO

Table of Contents ? ? UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-K ? 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 1-13412 Hudson Technologies, Inc.

March 24, 2022 EX-10.56

Form of Stock Appreciation Rights Award Agreement (27)

Exhibit 10.56 STOCK APPRECIATION RIGHTS AWARD HUDSON TECHNOLOGIES, INC. AGREEMENT made as of [DATE] (the "Grant Date") between Hudson Technologies, Inc. (the "Company"), a New York corporation, having a principal place of business at PO Box 1541, One Blue Hill Plaza, 14th Floor, Pearl River, New York 10965, and [[FIRSTNAME]] [[LASTNAME]] (the "Grantee"). WHEREAS, the Company desires to grant to th

March 16, 2022 NT 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 12b-25 SEC File Number: 1-13412 NOTIFICATION OF LATE FILING Cusip Number: 444144 10 9 (Check one) x Form 10-K ? Form 20-F ? Form 11-K ? Form 10-Q ? Form 10-D ? Form N-CEN ? Form N-CSR For Period Ended: December 31, 2021 ? Transition Report on Form 10-K ? Transition Report on Form 20-F ? Transition Report on Form 11-K ? Transition Report on Form 10-Q For the Transition Period Ended: Nothing in this form shall be construed to imply that the Commission has verified any information contained herein.

March 8, 2022 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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) March 8, 2022 Hudson Technologies, Inc.

March 8, 2022 EX-99.1

HUDSON TECHNOLOGIES REPORTS record FOURTH quarter ANd YEAR END 2021 reSults

Exhibit 99.1 HUDSON TECHNOLOGIES REPORTS record FOURTH quarter ANd YEAR END 2021 reSults WOODCLIFF LAKE, nJ ? MARCH 8, 2022 ? Hudson Technologies, Inc. (NASDAQ: HDSN) announced results for the fourth quarter and year ended December 31, 2021. For the quarter ended December 31, 2021, Hudson reported revenues of $37.8 million, an increase of 71% compared to revenues of $22.1 million in the comparable

March 3, 2022 EX-99.1

Hudson Technologies Enters Into New $85 Million Term Loan and Increases ABL Facility to a Total of $90 Million

Exhibit 99.1 Hudson Technologies Enters Into New $85 Million Term Loan and Increases ABL Facility to a Total of $90 Million Woodcliff Lake, NJ ? March 2, 2022 ? Hudson Technologies, Inc. (NASDAQ: HDSN), a leading provider of innovative and sustainable refrigerant products and services to the Heating, Ventilation, Air Conditioning, and Refrigeration industry ? and one of the nation?s largest refrig

March 3, 2022 EX-10.4

First Amendment to Guaranty and Security Agreement dated March 2, 2022 by and among the Grantors named therein and Wells Fargo Bank, National Association, as Agent (26)

Exhibit 10.4 Execution Version FIRST AMENDMENT TO GUARANTY AND SECURITY AGREEMENT THIS FIRST AMENDMENT TO GUARANTY AND SECURITY AGREEMENT (this ?Amendment?), dated as of March 2, 2022, is entered into by and among WELLS FARGO BANK, NATIONAL ASSOCIATION, a national banking association (?Wells Fargo?), as administrative agent for each member of the Lender Group and the Bank Product Providers (in suc

March 3, 2022 EX-10.1

Credit Agreement dated March 2, 2022 by and among TCW Asset Management Company LLC, as Agent, Hudson Technologies, Inc., and the Borrowers and Lenders party thereto

Exhibit 10.1 CREDIT AGREEMENT by and among TCW ASSET MANAGEMENT COMPANY LLC, as Agent, THE LENDERS THAT ARE PARTIES HERETO as the Lenders, HUDSON TECHNOLOGIES INC., as Parent, and HUDSON HOLDINGS, INC., HUDSON TECHNOLOGIES COMPANY, and THE OTHER BORROWERS THAT ARE PARTIES FROM TIME TO TIME HERETO, collectively, as the Borrowers Dated as of March 2, 2022 TABLE OF CONTENTS Page 1. DEFINITIONS AND CO

March 3, 2022 EX-10.3

Amended and Restated Credit Agreement dated March 2, 2022 by and among Wells Fargo Bank, National Association, as Agent, Hudson Technologies, Inc., and the Borrowers and Lenders party thereto (26)

Exhibit 10.3 AMENDED AND RESTATED CREDIT AGREEMENT by and among WELLS FARGO BANK, NATIONAL ASSOCIATION, as Agent, THE LENDERS THAT ARE PARTIES HERETO as the Lenders, HUDSON TECHNOLOGIES INC., as Parent, and HUDSON HOLDINGS, INC., HUDSON TECHNOLOGIES COMPANY, and THE OTHER BORROWERS THAT ARE PARTIES FROM TIME TO TIME HERETO, collectively, as the Borrowers Dated as of March 2, 2022 Table of Contents

March 3, 2022 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year, Entry into a Material Definitive Agreement, Termination of 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, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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) March 2, 2022 Hudson Technologies, Inc.

March 3, 2022 EX-3.1

Amended and Restated By-Laws. (26)

Exhibit 3.1 AMENDED AND RESTATED BY-LAWS OF HUDSON TECHNOLOGIES, INC. (a New York corporation) (With all amendments through March 2, 2022) ARTICLE I OFFICES, SEAL AND FISCAL YEAR 1. OFFICES: The principal office of the Corporation shall be at such location as the Board of Directors of the Corporation (the ?Board of Directors?) may from time to time designate. The Corporation may also have offices

March 3, 2022 EX-10.2

Guaranty and Security Agreement dated March 2, 2022 by and among the Grantors named therein and TCW Asset Management Company LLC, as Agent

Exhibit 10.2 GUARANTY AND SECURITY AGREEMENT This GUARANTY AND SECURITY AGREEMENT (this "Agreement"), dated as of March 2, 2022, by and among the Persons listed on the signature pages hereof as "Grantors" and those additional entities that hereafter become parties hereto by executing the form of Joinder attached hereto as Annex 1 (each, a "Grantor" and collectively, the "Grantors"), and TCW ASSET

February 14, 2022 SC 13G/A

HDSN / Hudson Technologies, Inc. / ArrowMark Colorado Holdings LLC Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 13G/A Under the Securities Exchange Act of 1934 (Amendment No.

February 10, 2022 SC 13G/A

HDSN / Hudson Technologies, Inc. / CALM WATERS PARTNERSHIP - AMENDMENT NO. 1 TO SCHEDULE 13G Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 1 )* HUDSON TECHNOLOGIES, INC. (Name of Issuer) Common Stock Par Value $0.01 (Title of Class of Securities) 444144109 (CUSIP Number) December 31, 2021 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pur

February 9, 2022 SC 13G/A

HDSN / Hudson Technologies, Inc. / Zugibe Maura - SC 13G/A Passive Investment

SC 13G/A 1 tm225853d1sc13ga.htm SC 13G/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 13G/A (Amendment No. 1)* Hudson Technologies, Inc. (Name of Issuer) Common Stock, par value $0.01 per share (Title of Class of Securities) 444144 10 9 (CUSIP Number) December 31, 2021 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate t

February 7, 2022 SC 13G/A

HDSN / Hudson Technologies, Inc. / Riva Ridge Capital Management LP Passive Investment

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

November 15, 2021 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q ⌧ 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 REPORT PURSUANT T

Table of Contents ? ? ? UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 ? FORM 10-Q ? ? 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 1-13412 ? Hudson Technologies, Inc.

November 3, 2021 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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) November 3, 2021 Hudson Technologies, Inc.

November 3, 2021 EX-99.1

HUDSON TECHNOLOGIES REPORTS Third quarter 2021 reSults

Exhibit 99.1 HUDSON TECHNOLOGIES REPORTS Third quarter 2021 reSults pearl river, ny ? November 3, 2021 ? Hudson Technologies, Inc. (NASDAQ: HDSN) announced results for the third quarter and nine months ended September 30, 2021. For the quarter ended September 30, 2021, Hudson reported revenues of $60.6 million, an increase of 46% compared to revenues of $41.5 million in the comparable 2020 period.

October 8, 2021 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, DC 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) October 7, 2021 Hudson Technologies, Inc.

August 11, 2021 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q ⌧ 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 PURSUANT TO SEC

Table of Contents ? ? ? UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 ? FORM 10-Q ? ? 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 1-13412 ? Hudson Technologies, Inc.

August 4, 2021 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 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, 2021 Hudson Technologies, Inc.

August 4, 2021 EX-99.1

HUDSON TECHNOLOGIES REPORTS record second quarter 2021 revenues

Exhibit 99.1 HUDSON TECHNOLOGIES REPORTS record second quarter 2021 revenues pearl river, ny ? August 4, 2021 ? Hudson Technologies, Inc. (NASDAQ: HDSN) announced results for the second quarter and six months ended June 30, 2021. For the quarter ended June 30, 2021, Hudson reported revenues of $60.5 million, an increase of 27% compared to revenues of $47.7 million in the comparable 2020 period. Se

July 1, 2021 SC 13G

HDSN / Hudson Technologies, Inc. / CALM WATERS PARTNERSHIP - SCHEDULE 13G Passive Investment

SCHEDULE 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. )* HUDSON TECHNOLOGIES, INC. (Name of Issuer) Common Stock Par Value $0.01 (Title of Class of Securities) 444144109 (CUSIP Number) June 29, 2021 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the r

June 29, 2021 8-K

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 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 29, 2021 Hudson Technologies, Inc.

June 29, 2021 EX-99.1

HUDSON TECHNOLOGIES RECEIVES 5-YEAR RENEWAL AWARD FOR DEPARTMENT OF DEFENSE CONTRACT; extending the toTal contract period to ten years

Exhibit 99.1 HUDSON TECHNOLOGIES RECEIVES 5-YEAR RENEWAL AWARD FOR DEPARTMENT OF DEFENSE CONTRACT; extending the toTal contract period to ten years PEARL RIVER, NY ? June 29, 2021? Hudson Technologies, Inc. (NASDAQ: HDSN) announced today that the United States Defense Logistics Agency (?DLA?) has exercised its renewal option to contract Hudson for an additional five years as the prime contractor f

June 11, 2021 8-K

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 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 10, 2021 Hudson Technologies, Inc.

May 25, 2021 SC 13D

HDSN / Hudson Technologies, Inc. / COLEMAN BRIAN F - SC 13D Activist Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 13D (Amendment No.

May 24, 2021 SC 13G

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

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

May 11, 2021 10-Q

Quarterly Report - FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q x 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 1-13412 Hudson Technologies, Inc.

May 5, 2021 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

8-K 1 tm2114946d18k.htm FORM 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 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 5, 2021 Hudson Technologies, Inc. (Exact Name of Registrant as Specified in Charter) New York (State or Other Jurisdiction of Incorporation) 1-13412

May 5, 2021 EX-99.1

HUDSON TECHNOLOGIES REPORTS FIRST Quarter 2021 RESULTS

Exhibit 99.1 HUDSON TECHNOLOGIES REPORTS FIRST Quarter 2021 RESULTS pearl river, ny ? MaY 5, 2021 ? Hudson Technologies, Inc. (NASDAQ: HDSN) announced results for the first quarter ended March 31, 2021. For the quarter ended March 31, 2021, Hudson reported revenues of $33.8 million, a decrease of 7% compared to revenues of $36.4 million in the comparable 2020 period. The decrease in revenue was pr

May 4, 2021 SC 13D/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 13D (Amendment No. 9)**

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 13D (Amendment No.

May 4, 2021 SC 13G

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 13G (Amendment No. )*

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 13G (Amendment No.

April 28, 2021 DEFA14A

- DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.

April 28, 2021 DEF 14A

- DEF 14A

? UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 ? SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.

March 12, 2021 EX-10.53

Form of Incentive Stock Option Agreement under the 2020 Stock Incentive Plan with vesting in equal installments over a specified period of time (25)*

Exhibit 10.53 INCENTIVE STOCK OPTION AGREEMENT HUDSON TECHNOLOGIES, INC. AGREEMENT made as of the (insert date) (the "Grant Date") between Hudson Technologies, Inc. (the "Company"), a New York corporation, having a principal place of business at PO Box 1541, One Blue Hill Plaza, 14th Floor, Pearl River, New York 10965, and (insert name of Grantee) (the "Grantee"). WHEREAS, the Company desires to g

March 12, 2021 EX-10.52

Form of Incentive Stock Option Agreement under the 2020 Stock Incentive Plan with full vesting upon issuance (25)*

Exhibit 10.52 INCENTIVE STOCK OPTION AGREEMENT HUDSON TECHNOLOGIES, INC. AGREEMENT made as of the (insert date) (the "Grant Date") between Hudson Technologies, Inc. (the "Company"), a New York corporation, having a principal place of business at PO Box 1541, One Blue Hill Plaza, 14th Floor, Pearl River, New York 10965, and (insert name of Grantee) (the "Grantee"). WHEREAS, the Company desires to g

March 12, 2021 EX-10.54

Form of Non-Qualified Stock Option Agreement under the 2020 Stock Incentive Plan with full vesting upon issuance (25)*

Exhibit 10.54 NON-QUALIFIED STOCK OPTION AGREEMENT HUDSON TECHNOLOGIES, INC. AGREEMENT made as of (insert date) (the "Grant Date") between Hudson Technologies, Inc. (the "Company"), a New York corporation, having a principal place of business at PO Box 1541, One Blue Hill Plaza, 14th Floor, Pearl River, New York 10965, and (insert name of Grantee) (the "Grantee"). WHEREAS, the Company desires to g

March 12, 2021 EX-10.56

Form of Non-Qualified Stock Option Agreement under the 2020 Stock Incentive Plan with conditional vesting provisions (24)*

Exhibit 10.56 NON-QUALIFIED STOCK OPTION AGREEMENT HUDSON TECHNOLOGIES, INC. AGREEMENT made as of (grant date) (the "Grant Date") between Hudson Technologies, Inc. (the "Company"), a New York corporation, having a principal place of business at PO Box 1541, One Blue Hill Plaza, 14th Floor, Pearl River, New York 10965, and (insert name of Grantee) (the "Grantee"). WHEREAS, the Company desires to gr

March 12, 2021 EX-21

Subsidiaries of the Company. (34)

Exhibit 21: Subsidiaries of the Registrant Hudson Technologies Company incorporated in the State of Delaware Hudson Holdings, Inc.

March 12, 2021 10-K

Annual Report - FORM 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K x 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 1-13412 Hudson Technologies, Inc. (E

March 12, 2021 EX-10.55

Form of Non-Qualified Stock Option Agreement under the 2020 Stock Incentive Plan with vesting in equal installments over a specified period of time (25)*

Exhibit 10.55 NON-QUALIFIED STOCK OPTION AGREEMENT HUDSON TECHNOLOGIES, INC. AGREEMENT made as of (insert date) (the "Grant Date") between Hudson Technologies, Inc. (the "Company"), a New York corporation, having a principal place of business at PO Box 1541, One Blue Hill Plaza, 14th Floor, Pearl River, New York 10965, and (insert name of Grantee) (the "Grantee"). WHEREAS, the Company desires to g

March 3, 2021 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 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) March 3, 2021 Hudson Technologies, Inc.

March 3, 2021 EX-99.1

HUDSON TECHNOLOGIES REPORTS FOURTH Quarter 2020 RESULTS

Exhibit 99.1 HUDSON TECHNOLOGIES REPORTS FOURTH Quarter 2020 RESULTS pearl river, ny – March 3, 2021 – Hudson Technologies, Inc. (NASDAQ: HDSN) announced results for the fourth quarter and year ended December 31, 2020. For the quarter ended December 31, 2020, Hudson reported revenues of $22.1 million, a decrease of 14% compared to revenues of $25.8 million in the comparable 2019 period. The decrea

February 16, 2021 SC 13G/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 13G/A Under the Securities Exchange Act of 1934 (Amendment No. 4)* Hudson Technologies, Inc.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 13G/A Under the Securities Exchange Act of 1934 (Amendment No.

February 8, 2021 SC 13G/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 3)* HUDSON TECHNOLOGIES, INC. (Name of Issuer) Common Stock Par Value $0.01 (Title of Class of Securities) (

SCHEDULE 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 3)* HUDSON TECHNOLOGIES, INC. (Name of Issuer) Common Stock Par Value $0.01 (Title of Class of Securities) 444144109 (CUSIP Number) December 31, 2020 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate

January 12, 2021 S-3/A

- S-3/A

TABLE OF CONTENTS As filed with the Securities and Exchange Commission on January 12, 2021 Registration No.

January 6, 2021 CORRESP

-

CORRESP 1 filename1.htm HUDSON TECHNOLOGIES, INC. One Blue Hill Plaza Pearl River, NY 10965 845-735-6000 (Phone) January 6, 2021 Division of Corporation Finance U.S. Securities and Exchange Commission 100 F Street NE Washington, DC 20549 Re: HUDSON TECHNOLOGIES, INC. (the “Company”) Registration Statement on Form S-3 (File No. 333-251646) Ladies and Gentlemen: In connection with the above-captione

December 29, 2020 EX-99.1

HUDSON TECHNOLOGIES APPLAUDS adoption of Omnibus/COVID-19 Relief which INCLUDes THE PHASEDOWN OF HFC PRODUCTION

Exhibit 99.1 HUDSON TECHNOLOGIES APPLAUDS adoption of Omnibus/COVID-19 Relief which INCLUDes THE PHASEDOWN OF HFC PRODUCTION pearl river, ny – DECember 29, 2020 – Hudson Technologies, Inc. (NASDAQ: HDSN), a leading provider of innovative and sustainable solutions for optimizing performance and improving efficiency of commercial and industrial chiller plants and refrigeration systems, commented tod

December 29, 2020 8-K

Financial Statements and Exhibits, Other Events - FORM 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 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) December 29, 2020 Hudson Technologies, Inc.

December 23, 2020 S-3

- S-3

TABLE OF CONTENTS As filed with the Securities and Exchange Commission on December 23, 2020 Registration No.

December 23, 2020 EX-4.12

Form of Indenture

Exhibit 4.12 HUDSON TECHNOLOGIES, INC. AND Trustee INDENTURE Dated as of Debt Securities Reconciliation and tie between Trust Indenture Act of 1939, as amended, and the Indenture Trust Indenture Act Section Indenture Section (S)310(a)(1) 6.8 (a)(2) 6.8 (b) 6.9 (S)312(a) 7.1 (b) 7.2 (c) 7.2 (S)313(a) 7.3 (b)(2) 7.3 (c) 7.3 (d) 7.3 (S)314(a) 7.4 (c)(1) 1.2 (c)(2) 1.2 (e) 1.2 (f) 1.2 (S)316(a) (last

November 10, 2020 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2020 ¨ TRANSITION REPORT PURSUANT T

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q x 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 1-13412 Hudson Technologies, Inc.

November 5, 2020 EX-99.1

HUDSON TECHNOLOGIES REPORTS THIRD Quarter 2020 RESULTS

EX-99.1 2 tm2034797d1ex99-1.htm EXHIBIT 99.1 Exhibit 99.1 HUDSON TECHNOLOGIES REPORTS THIRD Quarter 2020 RESULTS pearl river, ny – November 5, 2020 – Hudson Technologies, Inc. (NASDAQ: HDSN) announced results for the third quarter and nine months ended September 30, 2020. For the quarter ended September 30, 2020, Hudson reported revenues of $41.5 million, a decrease of 9% compared to revenues of $

November 5, 2020 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

8-K 1 tm2034797d18k.htm FORM 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 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) November 5, 2020 Hudson Technologies, Inc. (Exact Name of Registrant as Specified in Charter) New York (State or Other Jurisdiction of Incorporation) 1-1

September 16, 2020 8-K

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

8-K 1 tm2030585-18k.htm FORM 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 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) September 14, 2020 Hudson Technologies, Inc. (Exact Name of Registrant as Specified in Charter) New York (State or Other Jurisdiction of Incorporation) 1

September 16, 2020 EX-10.2

Amended and Restated Agreement dated September 30, 2019 between the Company and Kathleen L. Houghton (22)*

Exhibit 10.2 AMENDED AND RESTATED AGREEMENT THIS AMENDED AND RESTATED AGREEMENT (the “Agreement”) is made as of the 30 day of September, 2019 by and between Hudson Technologies, Inc., P.O. Box 1541, One Blue Hill Plaza, Pearl River, New York 10965 (“HTI”), Hudson Technologies Company, P.O. Box 1541, One Blue Hill Plaza, Pearl River, New York 10965 (“HTC” and hereinafter HTI, HTC and their Affiliat

September 16, 2020 EX-99.1

HUDSON TECHNOLOGIES NAMES KENNETH GAGLIONE VICE PRESIDENT - OPERATIONS

Exhibit 99.1 HUDSON TECHNOLOGIES NAMES KENNETH GAGLIONE VICE PRESIDENT - OPERATIONS PEARL RIVER, NY – September 14, 2020– Hudson Technologies, Inc. (NASDAQ: HDSN) (the “Company”) today announced the appointment of Kenneth Gaglione to the Company’s newly created role of Vice President - Operations. Mr. Gaglione most recently served as Global Marketing Director for aftermarket refrigerants at Honeyw

September 16, 2020 EX-10.1

Agreement dated September 14, 2020 between the Company and Kenneth Gaglione (31)*

Exhibit 10.1 AGREEMENT THIS AGREEMENT (the “Agreement”) is made as of the 14th day of September, 2020 by and between Hudson Technologies, Inc., P.O. Box 1541, One Blue Hill Plaza, Pearl River, New York 10965, Hudson Technologies Company, P.O. Box 1541, One Blue Hill Plaza, Pearl River, New York 10965, and Aspen Refrigerants, Inc., P.O. Box 1541, One Blue Hill Plaza, Pearl River, New York, 10965 (h

September 16, 2020 EX-99.2

HUDSON TECHNOLOGIES ANNOUNCES APPOINTMENT OF KATHLEEN L. HOUGHTON AS AN EXECUTIVE OFFICER

Exhibit 99.2 HUDSON TECHNOLOGIES ANNOUNCES APPOINTMENT OF KATHLEEN L. HOUGHTON AS AN EXECUTIVE OFFICER PEARL RIVER, NY – September 16, 2020– Hudson Technologies, Inc. (NASDAQ: HDSN) (the “Company”) today announced the appointment of Kathleen L. Houghton, as an executive officer of the Company. Ms. Houghton has served as Hudson’s Vice President – Sales and Marketing since May 2019. She joined the C

September 1, 2020 EX-99.1

HUDSON TECHNOLOGIES Appoints Stephen P. Mandracchia to Board of Directors

EX-99.1 2 tm2029371d1ex99-1.htm EXHIBIT 99.1 Exhibit 99.1 HUDSON TECHNOLOGIES Appoints Stephen P. Mandracchia to Board of Directors pearl river, ny – SEPTEMBER 1, 2020 – Hudson Technologies, Inc. (NASDAQ: HDSN) (the “Company”) today announced the appointment of Stephen P. Mandracchia to its Board of Directors. Mr. Mandracchia fills the Board vacancy resulting from the passing of Kevin J. Zugibe in

September 1, 2020 8-K

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

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 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) September 1, 2020 Hudson Technologies, Inc.

August 11, 2020 8-K

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 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 Hudson Technologies, Inc.

August 11, 2020 EX-99.1

HUDSON TECHNOLOGIES REGAINS COMPLIANCE WITH NASDAQ MINIMUM CLOSING BID PRICE RULE

Exhibit 99.1 HUDSON TECHNOLOGIES REGAINS COMPLIANCE WITH NASDAQ MINIMUM CLOSING BID PRICE RULE PEARL RIVER, NY – August 11, 2020 – Hudson Technologies, Inc. (NASDAQ: HDSN) today announced that it received a letter from The Nasdaq Stock Market LLC (“Nasdaq”) indicating that the closing bid price of the Company’s common stock has been at $1.00 per share or greater for ten consecutive business days (

August 5, 2020 EX-99.1

HUDSON TECHNOLOGIES REPORTS Second Quarter 2020 Net Income of $2.4 Million or $0.06 Per share

Exhibit 99.1 HUDSON TECHNOLOGIES REPORTS Second Quarter 2020 Net Income of $2.4 Million or $0.06 Per share pearl river, ny – August 5, 2020 – Hudson Technologies, Inc. (NASDAQ: HDSN) announced results for the second quarter and six months ended June 30, 2020. For the quarter ended June 30, 2020, Hudson reported revenues of $47.7 million, a decrease of 14.8% compared to revenues of $56.0 million in

August 5, 2020 10-Q

Quarterly Report - FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q x 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 1-13412 Hudson Technologies, Inc.

August 5, 2020 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

8-K 1 tm2026366d18k.htm FORM 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 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 5, 2020 Hudson Technologies, Inc. (Exact Name of Registrant as Specified in Charter) New York (State or Other Jurisdiction of Incorporation) 1-134

August 3, 2020 8-K

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

8-K 1 tm2026035d18k.htm FORM 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 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) July 29, 2020 Hudson Technologies, Inc. (Exact Name of Registrant as Specified in Charter) New York (State or Other Jurisdiction of Incorporation) 1-1341

July 20, 2020 EX-10.1

Fourth Amended and Restated Agreement dated as of June 24, 2020 between the Registrant and Brian F. Coleman (21)*

Exhibit 10.1 FOURTH AMENDED AND RESTATED AGREEMENT THIS FOURTH AMENDED AND RESTATED AGREEMENT (this “Agreement”) is made as of the 24th day of June, 2020 by and between Hudson Technologies, Inc., P.O. Box 1541, One Blue Hill Plaza, Pearl River, New York 10965, Hudson Technologies Company, P.O. Box 1541, One Blue Hill Plaza, Pearl River, New York 10965 and Aspen Refrigerants, Inc., P.O. Box 1541, O

July 20, 2020 8-K

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

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 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) July 15, 2020 Hudson Technologies, Inc.

July 20, 2020 EX-99.1

HUDSON TECHNOLOGIES NAMES BRIAN F. COLEMAN CHAIRMAN OF THE BOARD, PRESIDENT & CHIEF EXECUTIVE OFFICER

Exhibit 99.1 HUDSON TECHNOLOGIES NAMES BRIAN F. COLEMAN CHAIRMAN OF THE BOARD, PRESIDENT & CHIEF EXECUTIVE OFFICER PEARL RIVER, NY – July 20, 2020– Hudson Technologies, Inc. (NASDAQ: HDSN) (the “Company”) today announced that its Board of Directors has appointed Brian F. Coleman Chairman of the Board, President and Chief Executive Officer, roles he had assumed on an interim basis following the pas

June 30, 2020 EX-4.12

Hudson Technologies, Inc. 2020 Stock Incentive Plan (23)*

Exhibit 4.12 HUDSON TECHNOLOGIES, INC. 2020 STOCK INCENTIVE PLAN 1. Purpose The 2020 Hudson Technologies, Inc. Stock Incentive Plan (the "Plan") is intended to provide incentives which will attract, retain, motivate and reward highly competent persons as non-employee directors, executive officers and other employees of, or consultants and advisors to, Hudson Technologies, Inc. (the "Company") or a

June 30, 2020 S-8

- S-8

As filed with the Securities and Exchange Commission on June 30, 2020 Registration Statement No.

June 24, 2020 8-K

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

8-K 1 tm2023323d18k.htm FORM 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 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 23, 2020 Hudson Technologies, Inc. (Exact Name of Registrant as Specified in Charter) New York (State or Other Jurisdiction of Incorporation) 1-1341

June 24, 2020 EX-99.1

HUDSON TECHNOLOGIES ANNOUNCES THE PASSING OF CEO KEVIN. J. ZUGIBE

Exhibit 99.1 HUDSON TECHNOLOGIES ANNOUNCES THE PASSING OF CEO KEVIN. J. ZUGIBE pearl river, ny – JUNE 24, 2020 – Hudson Technologies, Inc. (NASDAQ: HDSN) today issued the following statement: “It is with great sadness that we announce that Kevin J. Zugibe, Chairman of the Board and Chief Executive Officer of Hudson Technologies, Inc., passed away unexpectedly yesterday. The entire Hudson family mo

June 12, 2020 8-K

Submission of Matters to a Vote of Security Holders

8-K 1 tm2022518d18k.htm FORM 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 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 11, 2020 Hudson Technologies, Inc. (Exact Name of Registrant as Specified in Charter) New York (State or Other Jurisdiction of Incorporation) 1-1341

May 15, 2020 EX-10.1

First Amendment to Credit Agreement dated April 23, 2020 with Wells Fargo Bank, National Association (29)

Exhibit 10.1 EXECUTION VERSION FIRST AMENDMENT TO CREDIT AGREEMENT THIS FIRST AMENDMENT TO CREDIT AGREEMENT (this “Amendment”), dated as of April 23, 2020, is entered into by and among WELLS FARGO BANK, NATIONAL ASSOCIATION, a national banking association (“Wells Fargo”), in its capacity as agent for the Lender Group and the Bank Product Providers (in such capacity, together with its successors an

May 15, 2020 10-Q

The Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2020;

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q x 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 1-13412 Hudson Technologies, Inc.

May 15, 2020 EX-10.2

Fifth Amendment to Term Loan and Credit and Security Agreement dated April 23, 2020 (29)

EX-10.2 3 tm2014556d1ex10-2.htm EXHIBIT 10.2 Exhibit 10.2 EXECUTION VERSION FIFTH AMENDMENT TO TERM LOAN CREDIT AND SECURITY AGREEMENT THIS FIFTH AMENDMENT TO TERM LOAN CREDIT AND SECURITY AGREEMENT (this “Amendment”), dated as of April 23, 2020, is by and among Hudson Technologies Company, a Tennessee corporation (“Hudson Technologies”), HUDSON HOLDINGS, INC., a Nevada corporation (“Holdings”), a

May 6, 2020 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

8-K 1 tm2018490d18k.htm FORM 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 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 6, 2020 Hudson Technologies, Inc. (Exact Name of Registrant as Specified in Charter) New York (State or Other Jurisdiction of Incorporation) 1-13412

May 6, 2020 EX-99.1

HUDSON TECHNOLOGIES REPORTS first quarter 2020 REVENUES OF $36.4 MILLION, gross MARGIN of 23% AND LIQUIDITY OF $27 MILLION

Exhibit 99.1 HUDSON TECHNOLOGIES REPORTS first quarter 2020 REVENUES OF $36.4 MILLION, gross MARGIN of 23% AND LIQUIDITY OF $27 MILLION pearl river, ny – MaY 6, 2020 – Hudson Technologies, Inc. (NASDAQ: HDSN) announced results for the first quarter ended March 31, 2020. For the quarter ended March 31, 2020, Hudson reported revenues of $36.4 million, a 5% increase compared to $34.7 million in the c

April 28, 2020 DEF 14A

our proxy statement filed with the SEC on April 28, 2020;

DEF 14A 1 tm2015040-3def14a.htm DEF 14A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.     ) Filed by the registrant ☒ Filed by a party other than the registrant ☐ Check the appropriate box: ☐ Preliminary proxy statement ☐ Confidential, For Use of the Commission Only

April 28, 2020 DEFA14A

- DEFA14A

DEFA14A 1 tm2015040d4defa14a.htm DEFA14A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the registrant x Filed by a party other than the registrant ¨ Check the appropriate box: ¨ Preliminary proxy statement ¨ Confidential, For Use of the Commission Only (as

April 20, 2020 8-K

Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing

8-K 1 tm2016366d18k.htm FORM 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 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) April 17, 2020 Hudson Technologies, Inc. (Exact Name of Registrant as Specified in Charter) New York (State or Other Jurisdiction of Incorporation) 1-134

April 9, 2020 PRE 14A

HDSN / Hudson Technologies, Inc. PRE 14A - - PRE 14A

PRE 14A 1 tm2015040-2pre14a.htm PRE 14A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.     ) Filed by the registrant ☒ Filed by a party other than the registrant ☐ Check the appropriate box: ☒ Preliminary proxy statement ☐ Confidential, For Use of the Commission Only

March 13, 2020 10-K

The Company's Annual Report on Form 10-K for the fiscal year ended December 31, 2019;

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K x 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 1-13412 Hudson Technologies, Inc. (E

March 13, 2020 EX-21

Subsidiaries of the Company. (29)

Exhibit 21: Subsidiaries of the Registrant Hudson Technologies Company incorporated in the State of Tennessee Hudson Holdings, Inc.

March 13, 2020 EX-4.1

Description of Equity Securities. (24)

EX-4.1 2 tm205284d1ex4-1.htm EXHIBIT 4.1 Exhibit 4.1: DESCRIPTION OF COMMON STOCK The following description summarizes the material terms of Hudson Technologies, Inc. (“Hudson”) common stock. Because it is only a summary, it does not contain all the information that may be important to you. For a complete description, you should refer to our certificate of incorporation, as amended, and amended an

March 4, 2020 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

8-K 1 tm2011513d18k.htm 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 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) March 4, 2020 Hudson Technologies, Inc. (Exact Name of Registrant as Specified in Charter) New York (State or Other Jurisdiction of Incorporation) 1-13412 13-

March 4, 2020 EX-99.1

HUDSON TECHNOLOGIES REPORTS Fourth quarter 2019 RESULTS

Exhibit 99.1 HUDSON TECHNOLOGIES REPORTS Fourth quarter 2019 RESULTS pearl river, ny – March 4, 2020 – Hudson Technologies, Inc. (NASDAQ: HDSN) announced results for the fourth quarter and year ended December 31, 2019. For the quarter ended December 31, 2019 Hudson reported revenues of $25.8 million, slightly higher than revenues of $25.7 million in the comparable 2018 period. Gross margin in the

February 14, 2020 SC 13G/A

HDSN / Hudson Technologies, Inc. / Arrowpoint Asset Management, LLC - SCHEDULE 13G HOLDINGS REPORT AMENDMENT Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 13G/A Under the Securities Exchange Act of 1934 (Amendment No.

February 12, 2020 SC 13G/A

HDSN / Hudson Technologies, Inc. / PEKIN SINGER STRAUSS ASSET MANAGEMENT /IL - PEKIN SINGER STRAUSS ASSET MANAGEMENT, INC Passive Investment

SC 13G/A 1 hdsna121220.htm PEKIN SINGER STRAUSS ASSET MANAGEMENT, INC UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 1)* HUDSON TECHNOLOGIES INC COM (Name of Issuer) Common (Title of Class of Securities) 444144109 (CUSIP Number) December 31, 2019 (Date of Event which Requires Filing of this Statement) Ch

February 12, 2020 SC 13G/A

HDSN / Hudson Technologies, Inc. / GRANAHAN INVESTMENT MANAGEMENT INC/MA - SC 13G/A Passive Investment

SC 13G/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 1)* Hudson Technologies, Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 444144109 (CUSIP Number) December 31, 2019 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to

February 12, 2020 SC 13G/A

HDSN / Hudson Technologies, Inc. / DIMENSIONAL FUND ADVISORS LP - SCHEDULE 13G/A Passive Investment

SC 13G/A 1 dfs318.htm SCHEDULE 13G/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 2)* HUDSON TECHNOLOGIES INC (Name of Issuer) Common Stock (Title of Class of Securities) 444144109 (CUSIP Number) December 31, 2019 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to desi

January 31, 2020 SC 13G/A

HDSN / Hudson Technologies, Inc. / CALM WATERS PARTNERSHIP - AMENDMENT NO. 2 TO SCHEDULE 13G Passive Investment

SCHEDULE 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 2)* HUDSON TECHNOLOGIES, INC. (Name of Issuer) Common Stock Par Value $0.01 (Title of Class of Securities) 444144109 (CUSIP Number) December 31, 2019 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate

January 30, 2020 8-K

Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing

8-K 1 tm206288d18k.htm FORM 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 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 30, 2020 Hudson Technologies, Inc. (Exact Name of Registrant as Specified in Charter) New York (State or Other Jurisdiction of Incorporation) 1-13

January 3, 2020 8-K

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

8-K 1 tm201123d18k.htm FORM 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 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 2, 2020 Hudson Technologies, Inc. (Exact Name of Registrant as Specified in Charter) New York (State or Other Jurisdiction of Incorporation) 1-134

December 20, 2019 EX-10.1

Credit Agreement dated December 19, 2019 by and among Wells Fargo Bank, National Association, as Agent, the Lenders that are parties thereto, Hudson Technologies, Inc. and the Borrowers Described Therein (28)

Exhibit 10.1 EXECUTION VERSION CREDIT AGREEMENT by and among WELLS FARGO BANK, NATIONAL ASSOCIATION, as Agent, THE LENDERS THAT ARE PARTIES HERETO as the Lenders, HUDSON TECHNOLOGIES INC., as Parent, and HUDSON HOLDINGS, INC., HUDSON TECHNOLOGIES COMPANY, ASPEN REFRIGERANTS, INC. and THE OTHER BORROWERS THAT ARE PARTIES FROM TIME TO TIME HERETO, collectively, as the Borrowers Dated as of December

December 20, 2019 EX-10.2

Guaranty and Security Agreement dated December 19, 2019 by and among the Grantors named therein and Wells Fargo Bank, National Association, as Agent (28)

Exhibit 10.2 EXECUTION VERSION GUARANTY AND SECURITY AGREEMENT This GUARANTY AND SECURITY AGREEMENT (this “Agreement”), dated as of December 19, 2019, by and among the Persons listed on the signature pages hereof as “Grantors” and those additional entities that hereafter become parties hereto by executing the form of Joinder attached hereto as Annex 1 (each, a “Grantor” and collectively, the “Gran

December 20, 2019 EX-10.4

Fourth Amended and Restated Employment Agreement dated December 19, 2019 between the Registrant and Kevin J. Zugibe (28)*

Exhibit 10.4 FOURTH AMENDED AND RESTATED EMPLOYMENT AGREEMENT THIS FOURTH AMENDED AND RESTATED EMPLOYMENT AGREEMENT (the “Agreement”) is made as of the 19th day of December, 2019 by and between Hudson Technologies, Inc., P.O. Box 1541, One Blue Hill Plaza, Pearl River, New York 10965, Hudson Technologies Company, P.O. Box 1541, One Blue Hill Plaza, Pearl River, New York 10965 and Aspen Refrigerant

December 20, 2019 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year, Entry into a Material Definitive Agreement, Termination of 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, Other Events

8-K 1 tm1926713d18k.htm FORM 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 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) December 19, 2019 Hudson Technologies, Inc. (Exact Name of Registrant as Specified in Charter) New York (State or Other Jurisdiction of Incorporation) 1-

December 20, 2019 EX-99.1

HUDSON TECHNOLOGIES ENTERS INTO NEW REVOLVING CREDIT FACILITY AND ANNOUNCES DEFINITIVE AMENDMENTS TO EXISTING TERM LOAN CREDIT FACILITY

Exhibit 99.1 HUDSON TECHNOLOGIES ENTERS INTO NEW REVOLVING CREDIT FACILITY AND ANNOUNCES DEFINITIVE AMENDMENTS TO EXISTING TERM LOAN CREDIT FACILITY PEARL RIVER, NY – December 19, 2019 – Hudson Technologies, Inc. (NASDAQ: HDSN) today announced that it has entered into a new revolving credit facility with Wells Fargo Bank, National Association, which provides up to $60 million in borrowing capacity

December 20, 2019 EX-3.1

Amended and Restated By-Laws adopted December 18, 2019. (28)

Exhibit 3.1 AMENDED AND RESTATED BY-LAWS OF HUDSON TECHNOLOGIES, INC. (a New York corporation) (With all amendments through December 18, 2019) (ADOPTED BY RESOLUTION MADE December 18, 2019) Article I OFFICES, SEAL AND FISCAL YEAR 1. OFFICES: The principal office of the Corporation shall be in the County of Rockland, State of New York, or at such other location as the Board of Directors of the Corp

December 20, 2019 EX-10.5

Third Amended and Restated Agreement dated December 19, 2019 between the Registrant and Brian F. Coleman (28)*

Exhibit 10.5 THIRD AMENDED AND RESTATED AGREEMENT THIS THIRD AMENDED AND RESTATED AGREEMENT (“the Agreement”) is made as of the 19th day of December, 2019 by and between Hudson Technologies, Inc., P.O. Box 1541, One Blue Hill Plaza, Pearl River, New York 10965, Hudson Technologies Company, P.O. Box 1541, One Blue Hill Plaza, Pearl River, New York 10965 and Aspen Refrigerants, Inc., P.O. Box 1541,

December 20, 2019 EX-10.3

Waiver and Fourth Amendment to Term Loan and Credit and Security Agreement dated December 19, 2019 (28)

Exhibit 10.3 EXECUTION VERSION WAIVER AND FOURTH AMENDMENT TO TERM LOAN CREDIT AND SECURITY AGREEMENT THIS WAIVER AND FOURTH AMENDMENT TO TERM LOAN CREDIT AND SECURITY AGREEMENT (this “Amendment”), dated as of December 19, 2019, is by and among Hudson Technologies Company, a Tennessee corporation (“Hudson Technologies”), HUDSON HOLDINGS, INC., a Nevada corporation (“Holdings”), and ASPEN REFRIGERA

November 15, 2019 10-Q

HDSN / Hudson Technologies, Inc. 10-Q - Quarterly Report - FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q x 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 1-13412 Hudson Technologies, Inc.

November 14, 2019 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

8-K 1 tm1922917d18k.htm 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 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): November 14, 2019 Hudson Technologies, Inc. (Exact Name of Registrant as Specified in Its Charter) New York (State or Other Jurisdiction of Incorporation) 1-

November 14, 2019 EX-99.1

HUDSON TECHNOLOGIES REPORTS third quarter 2019 RESULTS

EX-99.1 2 tm1922917d1ex99-1.htm EXHIBIT 99.1 Exhibit 99.1 HUDSON TECHNOLOGIES REPORTS third quarter 2019 RESULTS pearl river, ny – November 14, 2019 – Hudson Technologies, Inc. (NASDAQ: HDSN) announced results for the third quarter and nine months ended September 30, 2019. For the quarter ended September 30, 2019 Hudson reported revenues of $45.6 million, an increase of 13% compared to $40.5 milli

November 12, 2019 NT 10-Q

HDSN / Hudson Technologies, Inc. NT 10-Q - - NT 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 12b-25 SEC File Number: 1-13412 NOTIFICATION OF LATE FILING Cusip Number: 444144 10 9 (Check one) ¨ Form 10-K ¨ Form 20-F ¨ Form 11-K x Form 10-Q ¨ Form 10-D ¨ Form N-CEN ¨ Form N-CSR For Period Ended: September 30, 2019 ¨ Transition Report on Form 10-K ¨ Transition Report on Form 20-F ¨ Transition Report on Form 11-K ¨ Transition Report on Form 10-Q For the Transition Period Ended: Nothing in this form shall be construed to imply that the Commission has verified any information contained herein.

November 12, 2019 8-K

Regulation FD Disclosure, Results of Operations and Financial Condition

8-K 1 tm1919504d48k.htm FORM 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 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) November 12, 2019 Hudson Technologies, Inc. (Exact Name of Registrant as Specified in Charter) New York (State or Other Jurisdiction of Incorporation) 1-

September 23, 2019 8-K

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

8-K 1 tv5298668k.htm FORM 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 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) September 20, 2019 Hudson Technologies, Inc. (Exact Name of Registrant as Specified in Charter) New York (State or Other Jurisdiction of Incorporation) 1-13

September 23, 2019 EX-10.1

Third Amended and Restated Employment Agreement dated as of September 20, 2019 between the Registrant and Kevin J. Zugibe (27)*

Exhibit 10.1 THIRD AMENDED AND RESTATED EMPLOYMENT AGREEMENT THIS THIRD AMENDED AND RESTATED EMPLOYMENT AGREEMENT (the “Agreement”) is made as of the 20th day of September 2019 by and between Hudson Technologies, Inc., P.O. Box 1541, One Blue Hill Plaza, Pearl River, New York 10965, Hudson Technologies Company, P.O. Box 1541, One Blue Hill Plaza, Pearl River, New York 10965 and Aspen Refrigerants,

September 23, 2019 EX-10.2

Second Amended and Restated Agreement dated as of September 20, 2019 between the Registrant and Brian F. Coleman (27)*

Exhibit 10.2 SECOND AMENDED AND RESTATED AGREEMENT THIS SECOND AMENDED AND RESTATED AGREEMENT (“the Agreement”) is made as of the 20th day of September, 2019 by and between Hudson Technologies, Inc., P.O. Box 1541, One Blue Hill Plaza, Pearl River, New York 10965, Hudson Technologies Company, P.O. Box 1541, One Blue Hill Plaza, Pearl River, New York 10965 and Aspen Refrigerants, Inc., P.O. Box 154

September 23, 2019 EX-10.3

Amended and Restated Agreement dated as of September 20, 2019 between the Registrant and Nat Krishnamurti (27)*

Exhibit 10.3 AMENDED AND RESTATED AGREEMENT THIS AMENDED AND RESTATED AGREEMENT (the “Agreement”) is made as of the 20th day of September, 2019 by and between Hudson Technologies, Inc., P.O. Box 1541, One Blue Hill Plaza, Pearl River, New York 10965, Hudson Technologies Company, P.O. Box 1541, One Blue Hill Plaza, Pearl River, New York 10965, and Aspen Refrigerants, Inc., P.O. Box 1541, One Blue H

August 14, 2019 EX-99.1

HUDSON TECHNOLOGIES REPORTS Second quarter 2019 RESULTS and RecEives $8.9 million settlement from Airgas

Exhibit 99.1 HUDSON TECHNOLOGIES REPORTS Second quarter 2019 RESULTS and RecEives $8.9 million settlement from Airgas pearl river, ny – August 14, 2019 – Hudson Technologies, Inc. (NASDAQ: HDSN) announced results for the second quarter and six months ended June 30, 2019. For the quarter ended June 30, 2019 Hudson reported revenues of $56.0 million compared to $57.8 million in the comparable 2018 p

August 14, 2019 8-K

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

8-K 1 tv5275158k.htm FORM 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 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 9, 2019 Hudson Technologies, Inc. (Exact Name of Registrant as Specified in Charter) New York (State or Other Jurisdiction of Incorporation) 1-13412

August 14, 2019 10-Q

HDSN / Hudson Technologies, Inc. 10-Q - Quarterly Report - FORM 10-Q

10-Q 1 tv52731810q.htm FORM 10-Q UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q x 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 1

August 9, 2019 NT 10-Q

HDSN / Hudson Technologies, Inc. NT 10-Q - - NT 10-Q

NT 10-Q 1 tv527214nt10-q.htm NT 10-Q UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 12b-25 SEC File Number: 1-13412 NOTIFICATION OF LATE FILING Cusip Number: 444144 10 9 (Check one) ¨ Form 10-K ¨ Form 20-F ¨ Form 11-K x Form 10-Q ¨ Form 10-D ¨ Form N-CEN ¨ Form N-CSR For Period Ended: June 30, 2019 ¨ Transition Report on Form 10-K ¨ Transition Report on Form 20-F ¨ Tran

August 2, 2019 8-K

Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing

8-K 1 tv5265198k.htm FORM 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 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 1, 2019 Hudson Technologies, Inc. (Exact Name of Registrant as Specified in Charter) New York (State or Other Jurisdiction of Incorporation) 1-13412

July 10, 2019 SC 13G/A

HDSN / Hudson Technologies, Inc. / Arrowpoint Asset Management, LLC Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 13G/A Under the Securities Exchange Act of 1934 (Amendment No.

June 11, 2019 8-K

Submission of Matters to a Vote of Security Holders

8-K 1 tv5234198k.htm FORM 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 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 11, 2019 Hudson Technologies, Inc. (Exact Name of Registrant as Specified in Charter) New York (State or Other Jurisdiction of Incorporation) 1-13412 1

May 2, 2019 10-Q

HDSN / Hudson Technologies, Inc. 10-Q Quarterly Report FORM 10-Q

10-Q 1 tv51951410q.htm FORM 10-Q UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q x 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

May 2, 2019 EX-10.1

Third Amendment and Joinder to Amended and Restated Revolving Credit and Security Agreement and Waiver dated April 17, 2019

EX-10.1 2 tv519514ex10-1.htm EXHIBIT 10.1 Exhibit 10.1 Execution Version THIRD AMENDMENT AND JOINDER TO AMENDED AND RESTATED REVOLVING CREDIT AND SECURITY AGREEMENT AND WAIVER THIS THIRD AMENDMENT AND JOINDER TO AMENDED AND RESTATED REVOLVING CREDIT AND SECURITY AGREEMENT AND WAIVER (this “Amendment”), dated as of April 17, 2019, is entered into by and among Hudson Technologies Company, a Tennesse

May 2, 2019 EX-10.2

Joinder to Term Loan Credit and Security Agreement and Other Documents (26)

Exhibit 10.2 Execution Version JOINDER TO TERM LOAN CREDIT AND SECURITY AGREEMENT AND OTHER DOCUMENTS THIS JOINDER (this “Joinder”) is entered into as of April 17, 2019, by and among HUDSON TECHNOLOGIES COMPANY, a Tennessee corporation (“Hudson Technologies”), HUDSON HOLDINGS, INC., a Nevada corporation (“Holdings”), and ASPEN REFRIGERANTS, INC. (formerly known as AIRGAS-REFRIGERANTS, INC.), a Del

May 1, 2019 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

8-K 1 tv5202838k.htm FORM 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 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 1, 2019 Hudson Technologies, Inc. (Exact Name of Registrant as Specified in Its Charter) New York (State or Other Jurisdiction of Incorporation) 1-1341

May 1, 2019 EX-99.1

HUDSON TECHNOLOGIES REPORTS first quarter 2019 REVENUES OF $34.7 MILLION and gross MARGIN of 20%

EX-99.1 2 tv520283ex99-1.htm EXHIBIT 99.1 Exhibit 99.1 HUDSON TECHNOLOGIES REPORTS first quarter 2019 REVENUES OF $34.7 MILLION and gross MARGIN of 20% pearl river, ny – MaY 1, 2019 – Hudson Technologies, Inc. (NASDAQ: HDSN) announced results for the first quarter ended March 31, 2019. For the quarter ended March 31, 2019 Hudson reported revenues of $34.7 million, an 18% decrease compared to $42.4

April 26, 2019 DEFA14A

HDSN / Hudson Technologies, Inc. DEFA14A DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.

April 26, 2019 DEF 14A

HDSN / Hudson Technologies, Inc. DEF 14A DEFINITIVE PROXY STATEMENT

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.

March 15, 2019 EX-21

Subsidiaries of the Company. (30)

EX-21 7 tv515003ex21.htm EXHIBIT 21 Exhibit 21: Subsidiaries of the Registrant Hudson Technologies Company d/b/a Hudson Technologies of Tennessee incorporated in the State of Tennessee. Hudson Holdings, Inc. incorporated in the State of Nevada. ASPEN Refrigerants, Inc. (formerly Airgas-Refrigerants, Inc.) incorporated in the State of Delaware Safety Hi-Tech USA, LLC, a Delaware limited liability c

March 15, 2019 EX-10.42

Form of Non-Qualified Stock Option Agreement under the 2018 Stock Incentive Plan with vesting in equal installments over a specified period of time. (25)*

EX-10.42 5 tv515003ex10-42.htm EXHIBIT 10.42 Exhibit 10.42 NON-QUALIFIED STOCK OPTION AGREEMENT HUDSON TECHNOLOGIES, INC. AGREEMENT made as of (insert date) (the "Grant Date") between Hudson Technologies, Inc. (the "Company"), a New York corporation, having a principal place of business at PO Box 1541, One Blue Hill Plaza, 14th Floor, Pearl River, New York 10965, and (insert name of Grantee) (the

March 15, 2019 EX-10.40

Form of Incentive Stock Option Agreement under the 2018 Stock Incentive Plan with vesting in equal installments over a specified of time. (25)*

Exhibit 10.40 INCENTIVE STOCK OPTION AGREEMENT HUDSON TECHNOLOGIES, INC. AGREEMENT made as of the (insert date) (the "Grant Date") between Hudson Technologies, Inc. (the "Company"), a New York corporation, having a principal place of business at PO Box 1541, One Blue Hill Plaza, 14th Floor, Pearl River, New York 10965, and (insert name of Grantee) (the "Grantee"). WHEREAS, the Company desires to g

March 15, 2019 10-K

HDSN / Hudson Technologies, Inc. FORM 10-K (Annual Report)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K x 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 ¨ 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 1-13412 Hudson Technologies, Inc. (E

March 15, 2019 EX-10.41

Form of Non-Qualified Stock Option Agreement under the 2018 Stock Incentive Plan with full vesting upon issuances (25)*

EX-10.41 4 tv515003ex10-41.htm EXHIBIT 10.41 Exhibit 10.41 NON-QUALIFIED STOCK OPTION AGREEMENT HUDSON TECHNOLOGIES, INC. AGREEMENT made as of (insert date) (the "Grant Date") between Hudson Technologies, Inc. (the "Company"), a New York corporation, having a principal place of business at PO Box 1541, One Blue Hill Plaza, 14th Floor, Pearl River, New York 10965, and (insert name of Grantee) (the

March 15, 2019 EX-10.39

Form of Incentive Stock Option Agreement under the 2018 Stock Incentive Plan with full vesting upon issuance (25)*

EX-10.39 2 tv515003ex10-39.htm EXHIBIT 10.39 Exhibit 10.39 INCENTIVE STOCK OPTION AGREEMENT HUDSON TECHNOLOGIES, INC. AGREEMENT made as of the (insert date) (the "Grant Date") between Hudson Technologies, Inc. (the "Company"), a New York corporation, having a principal place of business at PO Box 1541, One Blue Hill Plaza, 14th Floor, Pearl River, New York 10965, and (insert name of Grantee) (the

March 15, 2019 EX-10.43

Form of Non-Qualified Stock Option Agreement under the 2018 Stock Incentive Plan with conditional vesting provisions. (25)*

EX-10.43 6 tv515003ex10-43.htm EXHIBIT 10.43 Exhibit 10.43 NON-QUALIFIED STOCK OPTION AGREEMENT HUDSON TECHNOLOGIES, INC. AGREEMENT made as of November 30, 2018 (the "Grant Date") between Hudson Technologies, Inc. (the "Company"), a New York corporation, having a principal place of business at PO Box 1541, One Blue Hill Plaza, 14th Floor, Pearl River, New York 10965, and (insert name of Grantee) (

March 6, 2019 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

8-K 1 tv5155558k.htm FORM 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 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): March 6, 2019 Hudson Technologies, Inc. (Exact Name of Registrant as Specified in Its Charter) New York (State or Other Jurisdiction of Incorporation) 1-13

March 6, 2019 EX-99.1

HUDSON TECHNOLOGIES REPORTS Fourth quarter 2018 RESULTS

EXHIBIT 99.1 HUDSON TECHNOLOGIES REPORTS Fourth quarter 2018 RESULTS pearl river, ny – March 6, 2019 – Hudson Technologies, Inc. (NASDAQ: HDSN) announced results for the fourth quarter and year ended December 31, 2018. The financial results for both 2018 and 2017 include the operations of Aspen Refrigerants, Inc. (“ARI”) which was acquired on October 10, 2017. For the quarter ended December 31, 20

February 14, 2019 SC 13G/A

HDSN / Hudson Technologies, Inc. / Arrowpoint Asset Management, LLC - SCHEDULE 13G HOLDINGS REPORT AMENDMENT Passive Investment

SC 13G/A 1 arrowmark-hdsn123118a1.htm SCHEDULE 13G HOLDINGS REPORT AMENDMENT UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 13G/A Under the Securities Exchange Act of 1934 (Amendment No. 1)* Hudson Technologies, Inc. (Name of Issuer) Common Stock, Par Value $0.01 Per Share (Title of Class of Securities) 444144109 (CUSIP Number) December 31, 2018 (Date of Event Which

February 12, 2019 SC 13G

HDSN / Hudson Technologies, Inc. / GRANAHAN INVESTMENT MANAGEMENT INC/MA - SC 13G Passive Investment

SC 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. )* Hudson Technologies, Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 444144109 (CUSIP Number) December 31, 2018 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to wh

February 11, 2019 SC 13G/A

HDSN / Hudson Technologies, Inc. / PEKIN SINGER STRAUSS ASSET MANAGEMENT /IL - PEKIN SINGER STRAUSS ASSET MANAGEMENT, INC Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 1)* HUDSON TECHNOLOGIES INC COM (Name of Issuer) Common (Title of Class of Securities) 444144109 (CUSIP Number) December 31, 2018 (Date of Event which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this S

February 8, 2019 SC 13G/A

HDSN / Hudson Technologies, Inc. / DIMENSIONAL FUND ADVISORS LP - SCHEDULE 13G/A Passive Investment

SC 13G/A 1 dfs558.htm SCHEDULE 13G/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 1)* HUDSON TECHNOLOGIES INC (Name of Issuer) Common Stock (Title of Class of Securities) 444144109 (CUSIP Number) December 31, 2018 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to desi

January 24, 2019 SC 13G/A

HDSN / Hudson Technologies, Inc. / DnB Asset Management AS - SC 13G/A Passive Investment

SC 13G/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No. 1) Hudson Technologies, Inc. (Name of Issuer) Common Stock, $0.01 par value (Title of Class of Securities) 444144 10 9 (CUSIP Number) December 31, 2018 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate th

January 18, 2019 SC 13G/A

HDSN / Hudson Technologies, Inc. / CALM WATERS PARTNERSHIP - AMENDMENT NO. 1 TO SCHEDULE 13G Passive Investment

SC 13G/A 1 hdsn13g.htm AMENDMENT NO. 1 TO SCHEDULE 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 1)* HUDSON TECHNOLOGIES, INC. (Name of Issuer) Common Stock Par Value $0.01 (Title of Class of Securities) 444144109 (CUSIP Number) December 31, 2018 (Date of Event Which Requires Filing of this Statemen

December 21, 2018 S-8

HDSN / Hudson Technologies, Inc. FORM S-8

As filed with the Securities and Exchange Commission on December 21, 2018 Registration Statement No.

December 21, 2018 EX-4.12

2018 Stock Incentive Plan (19)*

Exhibit 4.12 HUDSON TECHNOLOGIES, INC. 2018 STOCK INCENTIVE PLAN 1. Purpose The 2018 Hudson Technologies, Inc. Stock Incentive Plan (the "Plan") is intended to provide incentives which will attract, retain, motivate and reward highly competent persons as non-employee directors, executive officers and other employees of, or consultants and advisors to, Hudson Technologies, Inc. (the "Company") or a

December 6, 2018 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

8-K 1 tv5084918k.htm FORM 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 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) December 5, 2018 Hudson Technologies, Inc. (Exact Name of Registrant as Specified in Charter) New York (State or Other Jurisdiction of Incorporation) 1-1341

December 6, 2018 EX-99.1

HUDSON TECHNOLOGIES REPORTS Third quarter 2018 RESULTS

Exhibit 99.1 HUDSON TECHNOLOGIES REPORTS Third quarter 2018 RESULTS pearl river, ny – DECEmber 5, 2018 – Hudson Technologies, Inc. (NASDAQ: HDSN) announced results for the third quarter and nine months ended September 30, 2018. For the quarter ended September 30, 2018 Hudson reported revenues of $40.5 million, an increase of 64% compared to $24.7 million in the comparable 2017 period. Revenues for

December 3, 2018 EX-10.2

Second Amendment to Amended and Restated Revolving Credit and Security Agreement, Consent and Waiver

Exhibit 10.2 EXECUTION VERSION SECOND AMENDMENT TO AMENDED AND RESTATED REVOLVING CREDIT AND SECURITY AGREEMENT, CONSENT AND WAIVER THIS SECOND AMENDMENT TO AMENDED AND RESTATED REVOLVING CREDIT AND SECURITY AGREEMENT, CONSENT AND WAIVER (this “Amendment”), dated as of November 30, 2018, is entered into by and among Hudson Technologies Company, a corporation organized under the laws of the State o

December 3, 2018 8-K

Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 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) November 30, 2018 Hudson Technologies, Inc.

December 3, 2018 EX-99.1

HUDSON TECHNOLOGIES ANNOUNCES DEFINITIVE AMENDMENTS TO CREDIT FACILITIES; ACHIEVES $35M IN CASH FLOW FROM OPERATIONS FOR FIRST NINE MONTHS OF 2018 WITH $45M IN EXCESS LIQUIDITY - Amended Credit Facilities Provide Financial Flexibility to Support Corp

EX-99.1 4 tv508314ex99-1.htm EXHIBIT 99.1 Exhibit 99.1 HUDSON TECHNOLOGIES ANNOUNCES DEFINITIVE AMENDMENTS TO CREDIT FACILITIES; ACHIEVES $35M IN CASH FLOW FROM OPERATIONS FOR FIRST NINE MONTHS OF 2018 WITH $45M IN EXCESS LIQUIDITY - Amended Credit Facilities Provide Financial Flexibility to Support Corporate Objectives - PEARL RIVER, NY – November 30, 2018 – Hudson Technologies, Inc. (NASDAQ: HDS

December 3, 2018 EX-10.1

Waiver and Third Amendment to Term Loan and Security Agreement (24)

Exhibit 10.1 Execution Version WAIVER AND THIRD AMENDMENT TO TERM LOAN CREDIT AND SECURITY AGREEMENT THIS WAIVER AND THIRD AMENDMENT TO TERM LOAN CREDIT AND SECURITY AGREEMENT (this “Amendment”), dated as of November 30, 2018, is by and among Hudson Technologies Company, a Tennessee corporation (“Hudson Technologies”), HUDSON HOLDINGS, INC., a Nevada corporation (“Holdings”), and ASPEN REFRIGERANT

November 30, 2018 EX-10.1

Limited Waiver and First Amendment to the Term Loan Credit and Security Agreement and certain other documents

EX-10.1 2 tv500288ex10-1.htm EXHIBIT 10.1 Exhibit 10.1 Execution Version LIMITED WAIVER AND FIRST AMENDMENT TO TERM LOAN CREDIT AND SECURITY AGREEMENT AND CERTAIN OTHER DOCUMENTS THIS LIMITED WAIVER AND FIRST AMENDMENT TO TERM LOAN CREDIT AND SECURITY AGREEMENT AND CERTAIN OTHER DOCUMENTS (this “Amendment”), dated as of June 29, 2018, is by and among Hudson Technologies Company, a Tennessee corpor

November 30, 2018 EX-10.3

Extension Letter dated August 7, 2018

EX-10.3 4 tv500288ex10-3.htm EXHIBIT 10.3 Exhibit 10.3 August 7, 2018 Hudson Technologies Company 14th Floor One Blue Hill Plaza P.O. Box 1541 Pearl River, New York 10965 Attention: Brian F. Coleman, President, COO Extension Letter We refer to that certain Term Loan Credit and Security Agreement, dated as of October 10, 2017 (as amended by that Limited Waiver and First Amendment to Term Loan Credi

November 30, 2018 10-Q

HDSN / Hudson Technologies, Inc. FORM 10-Q (Quarterly Report)

10-Q 1 tv50709810q.htm FORM 10-Q UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q x 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 n

November 30, 2018 10-Q

HDSN / Hudson Technologies, Inc. FORM 10-Q (Quarterly Report)

10-Q 1 tv50028810q.htm FORM 10-Q UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q x 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

November 30, 2018 EX-10.2

Extension Letter dated July 31, 2018

Exhibit 10.2 July 31, 2018 Hudson Technologies Company 14th Floor One Blue Hill Plaza P.O. Box 1541 Pearl River, New York 10965 Attention: Brian F. Coleman, President, COO Extension Letter We refer to that certain Term Loan Credit and Security Agreement, dated as of October 10, 2017 (as amended by that Limited Waiver and First Amendment to Term Loan Credit and Security Agreement and Certain Other

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