OLP / One Liberty Properties, Inc. - Документы SEC, Годовой отчет, Доверенное заявление

Уан Либерти Пропертиз, Инк.
US ˙ NYSE ˙ US6824061039

Основная статистика
LEI 549300QII1CQZGZBZR14
CIK 712770
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 One Liberty Properties, Inc.
SEC Filings (Chronological Order)
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August 6, 2025 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q

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 Commission File Number 001-09279 ONE LIBERTY PROPERTIES, INC.

August 6, 2025 EX-10.1

Form of Performance Award Agreement for grants in 2025 pursuant to the 2025 Incentive Plan.

EXHIBIT 10.1 PERFORMANCE AWARDS AGREEMENT ONE LIBERTY PROPERTIES, INC. Name of Participant: Number of ROC Units: Number of TSR Units: Grant Date: June 27, 2025 THIS PERFORMANCE AWARD AGREEMENT (the “Agreement”) is entered into as of the grant date (the “Grant Date”) set forth above, between One Liberty Properties, Inc., a Maryland corporation (“Company”), and the participant identified above (the

August 5, 2025 EX-99.1

ONE LIBERTY PROPERTIES REPORTS SECOND QUARTER 2025 RESULTS – Enters Agreement to Acquire Industrial Property for $24.0 Million Bringing 2025 Acquisitions to Over $112 Million – – Completes Sale of Three Retail Assets for $6.5 Million Gain –

Proof - ea025173301ex99-1oneliberty.htm Exhibit 99.1 ONE LIBERTY PROPERTIES REPORTS SECOND QUARTER 2025 RESULTS – Enters Agreement to Acquire Industrial Property for $24.0 Million Bringing 2025 Acquisitions to Over $112 Million – – Completes Sale of Three Retail Assets for $6.5 Million Gain – GREAT NECK, New York, August 5, 2025 — One Liberty Properties, Inc. (NYSE: OLP), a real estate investment

August 5, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 5, 2025 ONE LIBERTY PROPER

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 5, 2025 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction of incorporation) (Commission

June 12, 2025 EX-99.1

JUN E 20 25 INVESTOR PRESENTATION O NE L IBERTY P ROPERTIES THIS PRESENTATION CONTAINS CERTAIN FORWARD - LOOKING STATEMENTS WITHIN THE MEANING OF SECTION 27 A OF THE SECURITIES ACT OF 1933 , AS AMENDED, AND SECTION 21 E OF THE SECURITIES EXCHANGE ACT

Exhibit 99.1 JUN E 20 25 INVESTOR PRESENTATION O NE L IBERTY P ROPERTIES THIS PRESENTATION CONTAINS CERTAIN FORWARD - LOOKING STATEMENTS WITHIN THE MEANING OF SECTION 27 A OF THE SECURITIES ACT OF 1933 , AS AMENDED, AND SECTION 21 E OF THE SECURITIES EXCHANGE ACT OF 1934 , AS AMENDED . WE INTEND SUCH FORWARD - LOOKING STATEMENTS TO BE COVERED BY THE SAFE HARBOR PROVISION FOR FORWARD - LOOKING STAT

June 12, 2025 8-K

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

SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 11, 2025 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction of incorporation) (Commission file No.) (IRS

June 9, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 5, 2025 ONE LIBERTY PROPERTI

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 5, 2025 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction of incorporation) (Commission f

June 9, 2025 EX-10.1

One Liberty Properties, Inc.’s 2025 Incentive Plan (incorporated by reference to Exhibit 10.1 to our Current Report on Form 8-K filed on June 9, 2025).

Exhibit 10.1 ONE LIBERTY PROPERTIES, INC. 2025 INCENTIVE PLAN   SECTION 1 EFFECTIVE DATE AND PURPOSE 1.1 Effective Date. This Plan (as defined) shall become effective upon approval by the stockholders of the Company (as defined), as and to the extent required by the listing requirements of the New York Stock Exchange. 1.2 Purpose of the Plan. The Plan is designed to motivate, retain and attract Pa

June 9, 2025 EX-FILING FEES

Filing Fee Table

Exhibit 107.1 Calculation of Filing Fee Tables S-8 (Form Type) One Liberty Properties, Inc. (Exact Name of Registrant as Specified in its Charter) Table 1 Newly Registered Securities Security Type Security Class Title (1) Fee Calculation Rule Amount Registered(1) Proposed Maximum Offering Price Per Unit(2) Maximum Aggregate Offering Price(2) Fee Rate Amount of Registration Fee(2) Equity Common sto

June 9, 2025 S-8

As filed with the Securities and Exchange Commission on June 9, 2025

As filed with the Securities and Exchange Commission on June 9, 2025 Registration No.

May 6, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 6, 2025 ONE LIBERTY PROPERTIE

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 6, 2025 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction of incorporation) (Commission fi

May 6, 2025 EX-99.1

ONE LIBERTY PROPERTIES REPORTS FIRST QUARTER 2025 RESULTS — Closes on Previously Announced Purchase of Four Industrial Properties for $88.3 Million — — Completes Sale of Two Non-Industrial Assets for a $1.1 Million Gain —

Exhibit 99.1 ONE LIBERTY PROPERTIES REPORTS FIRST QUARTER 2025 RESULTS — Closes on Previously Announced Purchase of Four Industrial Properties for $88.3 Million — — Completes Sale of Two Non-Industrial Assets for a $1.1 Million Gain — GREAT NECK, New York, May 6, 2025 — One Liberty Properties, Inc. (the “Company” or “One Liberty”) (NYSE: OLP), a real estate investment trust focused on net leased p

May 6, 2025 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q

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 Commission File Number 001-09279 ONE LIBERTY PROPERTIES, INC.

April 15, 2025 DEF 14A

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.  )

TABLE OF CONTENTS 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 ☒ Filed by a Party other than the Registrant  ☐ Check the appropriate box:          ☐     Preliminary Proxy Statement  ☐     Confidential, for Use of the Commission Only (as

March 6, 2025 EX-10.15

Form of Restricted Stock Award Agreement for awards granted in 2025 pursuant to the 2022 Incentive Plan

EXHIBIT 10.15 RESTRICTED STOCK AWARD AGREEMENT RESTRICTED STOCK AWARD AGREEMENT, dated as of January 14, 2025 (the “Grant Date”), by and between One Liberty Properties, Inc., a Maryland corporation (the “Company”), having its principal place of business at 60 Cutter Mill Road, Great Neck, New York 11021 and the person named on the signature page of this Agreement (“Holder”). W I T N E S S E T H A.

March 6, 2025 EX-21.1

Subsidiaries of the Registrant

EXHIBIT 21.1 SUBSIDIARIES OF THE COMPANY Company State of Organization OLP Greenwood Village, Colorado, Inc. Colorado OLP 4809 Louisville LLC Delaware OLP 6305 Northwood OH LLC Delaware OLP 6507 Northwood OH LLC Delaware OLP 6609 Grand LLC Delaware OLP Air Trans Road TN LLC Delaware OLP Albuquerque Delaware OLP Ankeny IA LLC Delaware OLP Ann Arbor LLC Delaware OLP Ashland VA LLC Delaware OLP Athen

March 6, 2025 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 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 Commission File Number 001-09279 ONE LIBERTY PROPERTIES, INC. (Exact name o

March 6, 2025 EX-19.1

Insider Trading Policy dated as of December 12, 2024.

EXHIBIT 19.1 ONE LIBERTY PROPERTIES, INC. INSIDER TRADING POLICY Effective as of December 12, 2024 I. Purpose This Insider Trading Policy (the “Policy”) provides guidelines with respect to transactions in the securities of One Liberty Properties, Inc. (“us”, “we”, “our” or the “Company”) and the handling of confidential information about us and the companies with which we engage in transactions or

March 5, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 5, 2025 ONE LIBERTY PROPERT

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 5, 2025 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction of incorporation) (Commission

March 5, 2025 EX-99.1

ONE LIBERTY PROPERTIES REPORTS FOURTH QUARTER AND FULL YEAR 2024 RESULTS – Acquired Three Industrial Properties in 2024 for $44.7 Million – – Acquires Three Industrial Assets for $62.3 Million in First Quarter 2025 – – Signed Definitive Agreement to

Exhibit 99.1 ONE LIBERTY PROPERTIES REPORTS FOURTH QUARTER AND FULL YEAR 2024 RESULTS – Acquired Three Industrial Properties in 2024 for $44.7 Million – – Acquires Three Industrial Assets for $62.3 Million in First Quarter 2025 – – Signed Definitive Agreement to Acquire Industrial Property for $26 Million – – Declared 129th Consecutive Quarterly Dividend – GREAT NECK, New York, March 5, 2025 — One

November 25, 2024 8-K

Other Events, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 19, 2024 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction of incorporation) (Commiss

November 6, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q

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 Commission File Number 001-09279 ONE LIBERTY PROPERTIES, INC.

November 5, 2024 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 5, 2024 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction of incorporation) (Commissi

November 5, 2024 EX-99.1

ONE LIBERTY PROPERTIES REPORTS THIRD QUARTER 2024 RESULTS — Closes on Previously Announced Purchase of Industrial Property For $33.0 Million — — Completes Sales and Secures Sales Agreements for Six Properties for an Estimated Gain of Approximately $9

Exhibit 99.1 ONE LIBERTY PROPERTIES REPORTS THIRD QUARTER 2024 RESULTS — Closes on Previously Announced Purchase of Industrial Property For $33.0 Million — — Completes Sales and Secures Sales Agreements for Six Properties for an Estimated Gain of Approximately $9 Million — GREAT NECK, New York, November 5, 2024 — One Liberty Properties, Inc. (NYSE: OLP), a real estate investment trust focused on n

October 7, 2024 EX-99.1

INVESTOR P R E S E N T A T I O N SEPTEMBE R 2024 O N E L I B E R T Y P R O P E R T I E S , I N C . I N V E S T O R P R E S E N T A T I O N 2 TABLE OF CONTENTS PAGE DESCRIPTION PAGE DESCRIPTION 19 - 20 O p po r t un i st i c D i s po s i t i o n s 2 T

Exhibit 99.1 INVESTOR P R E S E N T A T I O N SEPTEMBE R 2024 O N E L I B E R T Y P R O P E R T I E S , I N C . I N V E S T O R P R E S E N T A T I O N 2 TABLE OF CONTENTS PAGE DESCRIPTION PAGE DESCRIPTION 19 - 20 O p po r t un i st i c D i s po s i t i o n s 2 Ta b l e of Con t ents 21 R ec ent M ortg a g e s 3 S afe H ar bo r D i s c l o su r e Ca s e St u d i es: 4 Co mp any O v er v i ew 22 A

October 7, 2024 8-K

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

SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 7, 2024 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction of incorporation) (Commission file No.) (I

August 7, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q

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 Commission File Number 001-09279 ONE LIBERTY PROPERTIES, INC.

August 7, 2024 EX-10.1

Form of Performance Agreement for RSU grants in 2024 pursuant to the 2022 Incentive Plan.

EXHIBIT 10.1 PERFORMANCE AWARDS AGREEMENT ONE LIBERTY PROPERTIES, INC. Name of Participant: Number of ROC Units: Number of TSR Units: Grant Date: July 16, 2024 THIS PERFORMANCE AWARD AGREEMENT is entered into as of the grant date (the “Grant Date”) set forth above, between One Liberty Properties, Inc., a Maryland corporation (“Company”), and the participant identified above (the “Participant”). WH

August 6, 2024 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 6, 2024 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction of incorporation) (Commission

August 6, 2024 EX-99.1

ONE LIBERTY PROPERTIES REPORTS SECOND QUARTER 2024 RESULTS – Enters into Contracts to Acquire Two Industrial Properties for $61.6 million – – Closes on Purchase of Two Industrial Properties for Approximately $11.7 Million – – Completes Sales of Six P

Exhibit 99.1 ONE LIBERTY PROPERTIES REPORTS SECOND QUARTER 2024 RESULTS – Enters into Contracts to Acquire Two Industrial Properties for $61.6 million – – Closes on Purchase of Two Industrial Properties for Approximately $11.7 Million – – Completes Sales of Six Properties For $7.4 Million Gain – GREAT NECK, New York, August 6, 2024 — One Liberty Properties, Inc. (NYSE: OLP), a real estate investme

July 1, 2024 8-K

Other Events, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 28, 2024 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction of incorporation) (Commission

June 24, 2024 8-K

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 24, 2024 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction of incorporation) (Commission

June 11, 2024 EX-FILING FEES

Calculation of Filing Fee Tables Form S-3 (Form Type) One Liberty Properties, Inc. (Exact Name of Registrant as Specified in its Charter)

Exhibit 107.1 Calculation of Filing Fee Tables Form S-3 (Form Type) One Liberty Properties, Inc. (Exact Name of Registrant as Specified in its Charter) Security Type Security Class Title Fee Calculation Rule (2) Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Equity Common stock, par value $1.00 per share Rule 457(c) 1

June 11, 2024 EX-99.1

EX-99.1

Exhibit 99.1

June 11, 2024 S-3D

As filed with the Securities and Exchange Commission on June 11, 2024

As filed with the Securities and Exchange Commission on June 11, 2024 Registration No.

June 10, 2024 8-K

Financial Statements and Exhibits, Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 10, 2024 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction (Commission file No.) (IRS Emp

May 7, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q

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 Commission File Number 001-09279 ONE LIBERTY PROPERTIES, INC.

May 7, 2024 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 7, 2024 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction of incorporation) (Commission fi

May 7, 2024 EX-99.1

ONE LIBERTY PROPERTIES REPORTS FIRST QUARTER 2024 RESULTS — Closes Acquisition of Industrial Property— — Sells Two Assets and Secures Contracts for Three Additional Sales —

Exhibit 99.1 ONE LIBERTY PROPERTIES REPORTS FIRST QUARTER 2024 RESULTS — Closes Acquisition of Industrial Property— — Sells Two Assets and Secures Contracts for Three Additional Sales — GREAT NECK, New York, May 7, 2024 — One Liberty Properties, Inc. (the “Company” or “One Liberty”) (NYSE: OLP), a real estate investment trust focused on net leased properties, today announced operating results for

April 22, 2024 DEF 14A

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.  )

TABLE OF CONTENTS 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 ☒ 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 Rul

April 5, 2024 8-K

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

SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 5, 2024 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction of incorporation) (Commission file No.) (IRS

April 5, 2024 EX-99.1

INVESTOR PRESENTATION APRIL 2024 O N E L I B E R T Y P R O P E R T I E S , I N C . I N V E S T O R P R E S E N T A T I O N 2 TABLE OF CONTENTS Diversified Tenant Base Financial Summary Operational Metrics Growth Positioned Balance Sheet Mortgage Debt

Exhibit 99.1 INVESTOR PRESENTATION APRIL 2024 O N E L I B E R T Y P R O P E R T I E S , I N C . I N V E S T O R P R E S E N T A T I O N 2 TABLE OF CONTENTS Diversified Tenant Base Financial Summary Operational Metrics Growth Positioned Balance Sheet Mortgage Debt Maturities Lease Maturity Profile Stable Occupancy Acquisition Track Record Recent Acquisitions Opportunistic Dispositions 10 11 12 13 1

March 6, 2024 EX-21.1

Subsidiaries of the Registrant

EXHIBIT 21.1 SUBSIDIARIES OF THE COMPANY Company State of Organization OLP Greenwood Village, Colorado, Inc. Colorado OLP 4809 Louisville LLC Delaware OLP 6305 Northwood OH LLC Delaware OLP 6507 Northwood OH LLC Delaware OLP 6609 Grand LLC Delaware OLP Air Trans Road TN LLC Delaware OLP Ankeny IA LLC Delaware OLP Ann Arbor LLC Delaware OLP Ashland VA LLC Delaware OLP Athens LLC Delaware OLP Bakers

March 6, 2024 EX-97.1

Registrant’s Clawback Policy effective October 2, 2023

EXHIBIT 97.1 ONE LIBERTY PROPERTIES, INC. CLAWBACK POLICY Effective as of October 2, 2023 The Board of Directors (the “Board”) of One Liberty Properties, Inc. (the “Company”) believes that it is in the best interests of the Company and its stockholders to adopt this Clawback Policy (the “Policy”) which provides for the recovery of certain incentive compensation in the event of an Accounting Restat

March 6, 2024 EX-10.14

Form of Restricted Stock Award Agreement for awards granted in 2024 pursuant to the 2022 Incentive Plan.

EXHIBIT 10.14 RESTRICTED STOCK AWARD AGREEMENT RESTRICTED STOCK AWARD AGREEMENT, dated as of January 12, 2024 (the “Grant Date”), by and between One Liberty Properties, Inc., a Maryland corporation (the “Company”), having its principal place of business at 60 Cutter Mill Road, Great Neck, New York 11021 and the person named on the signature page of this Agreement (“Holder”). W I T N E S S E T H A.

March 6, 2024 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 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 Commission File Number 001-09279 ONE LIBERTY PROPERTIES, INC. (Exact name o

March 5, 2024 EX-99.1

ONE LIBERTY PROPERTIES REPORTS FOURTH QUARTER AND FULL YEAR 2023 RESULTS – Occupancy at 98.8% – – Paid-Off $21.8 Million of Credit Facility Debt – – Declared 125th Consecutive Quarterly Dividend – – Repurchased $9.6 Million of Shares in 2023 –

Exhibit 99.1 ONE LIBERTY PROPERTIES REPORTS FOURTH QUARTER AND FULL YEAR 2023 RESULTS – Occupancy at 98.8% – – Paid-Off $21.8 Million of Credit Facility Debt – – Declared 125th Consecutive Quarterly Dividend – – Repurchased $9.6 Million of Shares in 2023 – GREAT NECK, New York, March 5, 2024 — One Liberty Properties, Inc. (NYSE: OLP), a real estate investment trust focused primarily on net leased

March 5, 2024 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 5, 2024 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction of incorporation) (Commission

February 13, 2024 SC 13G/A

OLP / One Liberty Properties, Inc. / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SC 13G/A 1 tv01612-onelibertyproperties.htm SCHEDULE 13G/A SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 11)* Name of issuer: One Liberty Properties Inc Title of Class of Securities: Common Stock CUSIP Number: 682406103 Date of Event Which Requires Filing of this Statement: December 29, 2023 Check the appropriate bo

December 21, 2023 8-K

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 21, 2023 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction of incorporation) (Commiss

December 5, 2023 EX-99.1

ONE LIBERTY PROPERTIES ANNOUNCES 124TH CONSECUTIVE QUARTERLY DIVIDEND – Increased or Maintained Dividend for Over 30 Consecutive Years – – Increases Current Share Repurchase Authorization –

Exhibit 99.1 ONE LIBERTY PROPERTIES ANNOUNCES 124TH CONSECUTIVE QUARTERLY DIVIDEND – Increased or Maintained Dividend for Over 30 Consecutive Years – – Increases Current Share Repurchase Authorization – GREAT NECK, NY – December 5, 2023 – One Liberty Properties, Inc. (NYSE: OLP) today announced that its Board of Directors declared a quarterly dividend on the Company’s common stock of $0.45 per sha

December 5, 2023 8-K

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 5, 2023 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction of incorporation) (Commissi

December 1, 2023 8-K

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 30, 2023 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction of incorporation) (Commiss

November 6, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q

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 Commission File Number 001-09279 ONE LIBERTY PROPERTIES, INC.

November 6, 2023 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 6, 2023 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction of incorporation) (Commissi

November 6, 2023 EX-99.1

ONE LIBERTY PROPERTIES REPORTS THIRD QUARTER 2023 RESULTS — Rental Income Grew 4.7 % Year-over-Year — — Repurchases $2.5 Million of Shares Subsequent to Quarter End and $9.1 Million in 2023 —

Exhibit 99.1 ONE LIBERTY PROPERTIES REPORTS THIRD QUARTER 2023 RESULTS — Rental Income Grew 4.7 % Year-over-Year — — Repurchases $2.5 Million of Shares Subsequent to Quarter End and $9.1 Million in 2023 — GREAT NECK, New York, November 6, 2023 — One Liberty Properties, Inc. (NYSE: OLP), a real estate investment trust focused on net leased properties, today announced operating results for the quart

October 6, 2023 8-K

Other Events, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 6, 2023 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction of incorporation) (Commissio

September 21, 2023 EX-1.1

Equity Distribution Agreement, dated September 21, 2023 by and between One Liberty Properties, Inc. (“OLP”) and B. Riley FBR, Inc. (“Riley”) (incorporated by reference to Exhibit 1.1 to our Current Report on Form 8-K filed on September 21, 2023).

Exhibit 1.1 ONE LIBERTY PROPERTIES, INC. Common Stock ($1.00 par value per share) Equity Distribution Agreement September 21, 2023 B. Riley Securities, Inc. 299 Park Avenue, 21st Floor New York, NY 10171 Ladies & Gentlemen: One Liberty Properties, Inc., a Maryland corporation (the “Company”) confirms its agreement (this “Agreement”) with B. Riley Securities, Inc. (the “Agent”), as follows: 1. Issu

September 21, 2023 8-K

Entry into a Material Definitive Agreement, Termination of a Material Definitive Agreement, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): September 21, 2023 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction of incorporation) (Commis

September 21, 2023 424B5

ONE LIBERTY PROPERTIES, INC. Common Stock

TABLE OF CONTENTS Filed Pursuant to Rule 424(b)(5) Registration No. 333-273713 Prospectus Supplement (To Prospectus dated September 1, 2023) ONE LIBERTY PROPERTIES, INC.   $50,000,000   Common Stock On September 21, 2023, we entered into an Equity Distribution Agreement, the “sales agreement”, with B. Riley Securities, Inc., the “sales agent”, relating to the offer and sale shares of our common st

September 8, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): September 8, 2023 ONE LIBERTY PRO

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): September 8, 2023 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction (Commission file No.) (IRS

August 30, 2023 CORRESP

VIA EDGAR

VIA EDGAR August 30, 2023 United States Securities and Exchange Commission 100 F Street, N.

August 4, 2023 EX-FILING FEES

Calculation of Filing Fee Tables Form S-3 (Form Type) One Liberty Properties, Inc. (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities

Exhibit 107 Calculation of Filing Fee Tables Form S-3 (Form Type) One Liberty Properties, Inc.

August 4, 2023 EX-10.1

Form of Performance Agreement for RSU grants in 2023 pursuant to the 2022 Incentive Plan.

EXHIBIT 10.1 PERFORMANCE AWARDS AGREEMENT ONE LIBERTY PROPERTIES, INC. Name of Participant: Number of ROC Units: Number of TSR Units: Grant Date: June 22, 2023 THIS PERFORMANCE AWARD AGREEMENT is entered into as of the grant date (the “Grant Date”) set forth above, between One Liberty Properties, Inc., a Maryland corporation (“Company”), and the participant identified above (the “Participant”). WH

August 4, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q

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 Commission File Number 001-09279 ONE LIBERTY PROPERTIES, INC.

August 4, 2023 S-3

AS FILED WITH THE UNITED STATES SECURITIES AND EXCHANGE COMMISSION ON AUGUST 4, 2023

TABLE OF CONTENTS AS FILED WITH THE UNITED STATES SECURITIES AND EXCHANGE COMMISSION ON AUGUST 4, 2023 REGISTRATION NO.

August 3, 2023 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 3, 2023 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction of incorporation) (Commission

August 3, 2023 EX-99.1

ONE LIBERTY PROPERTIES REPORTS SECOND QUARTER 2023 RESULTS — Rental Income Grew 4.2% Year-over-Year — — Company Repurchases $1.5 Million of Shares —

Exhibit 99.1 ONE LIBERTY PROPERTIES REPORTS SECOND QUARTER 2023 RESULTS — Rental Income Grew 4.2% Year-over-Year — — Company Repurchases $1.5 Million of Shares — GREAT NECK, New York, August 3, 2023 — One Liberty Properties, Inc. (NYSE: OLP), a real estate investment trust focused on net leased properties, today announced operating results for the quarter ended June 30, 2023. Patrick J. Callan, Jr

June 14, 2023 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits, Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 13, 2023 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction of incorporation) (Commission

June 14, 2023 EX-4.2

Amended and Restated 2016 Incentive Plan

Exhibit 4.2 ONE LIBERTY PROPERTIES, INC. AMENDED AND RESTATED 2016 INCENTIVE PLAN (AS AMENDED THROUGH JUNE 13, 2023) SECTION 1 EFFECTIVE DATE AND PURPOSE 1.1 Effective Date. This Plan (as defined) became effective upon approval by the stockholders of the Company (as defined) on June 10, 2016. 1.2 Purpose of the Plan. The Plan is designed to motivate, retain and attract Participants (as defined) of

June 14, 2023 EX-4.3

OLP Amended and Restated 2019 Incentive Plan (incorporated by reference to Exhibit 4.3 to our Current Report on Form 8-K filed June 14, 2023).

Exhibit 4.3 ONE LIBERTY PROPERTIES, INC. AMENDED AND RESTATED 2019 INCENTIVE PLAN (AS AMENDED THROUGH JUNE 13, 2023) SECTION 1 EFFECTIVE DATE AND PURPOSE 1.1 Effective Date. This Plan (as defined) became effective upon approval by the stockholders of the Company (as defined) on June 13, 2019. 1.2 Purpose of the Plan. The Plan is designed to motivate, retain and attract Participants (as defined) of

June 1, 2023 8-K

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 31, 2023 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction of incorporation) (Commission f

May 18, 2023 8-K

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 17, 2023 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction of incorporation) (Commission f

May 5, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q

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 Commission File Number 001-09279 ONE LIBERTY PROPERTIES, INC.

May 4, 2023 EX-99.1

ONE LIBERTY PROPERTIES REPORTS FIRST QUARTER 2023 RESULTS — Rental Income Grew 7.0% Year-over-Year —

Exhibit 99.1 ONE LIBERTY PROPERTIES REPORTS FIRST QUARTER 2023 RESULTS — Rental Income Grew 7.0% Year-over-Year — GREAT NECK, New York, May 4, 2023 — One Liberty Properties, Inc. (NYSE: OLP), a real estate investment trust focused on net leased properties, today announced operating results for the quarter ended March 31, 2023. “We are pleased that the work we have undertaken the past few years to

May 4, 2023 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 4, 2023 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction of incorporation) (Commission fi

April 21, 2023 DEF 14A

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.  )

DEF 14A 1 ny20008447x1def14a.htm DEF 14A TABLE OF CONTENTS 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 ☒ Filed by a Party other than the Registrant  ☐ Check the appropriate box:  ☐ Preliminary Proxy Statement  ☐ Confidential, for Use of

March 14, 2023 EX-21.1

Subsidiaries of the Registrant

EXHIBIT 21.1 SUBSIDIARIES OF THE COMPANY Company State of Organization OLP Greenwood Village, Colorado, Inc. Colorado OLP 4809 Louisville LLC Delaware OLP 6305 Northwood OH LLC Delaware OLP 6507 Northwood OH LLC Delaware OLP 6609 Grand LLC Delaware OLP Air Trans Road TN LLC Delaware OLP Ankeny IA LLC Delaware OLP Ann Arbor LLC Delaware OLP Ashland VA LLC Delaware OLP Athens LLC Delaware OLP Bakers

March 14, 2023 EX-10.16

Form of Restricted Stock Award Agreement for awards granted in 2023 pursuant to the 2022 Incentive Plan (incorporated by reference to Exhibit 10.16 to our Annual Report on Form 10-K filed on March 14, 2023).

EXHIBIT 10.16 RESTRICTED STOCK AWARD AGREEMENT RESTRICTED STOCK AWARD AGREEMENT, dated as of January , 2023 (the “Grant Date”), by and between One Liberty Properties, Inc., a Maryland corporation, having its principal place of business at 60 Cutter Mill Road, Great Neck, New York 11021 (the “Company”) and the person named on the signature page of this Agreement (“Holder”). W I T N E S S E T H A.Th

March 14, 2023 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 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 Commission File Number 001-09279 ONE LIBERTY PROPERTIES, INC. (Exact name o

March 13, 2023 EX-99.1

ONE LIBERTY PROPERTIES REPORTS FOURTH QUARTER AND FULL YEAR 2022 RESULTS – Leased over 1.1 Million Square Feet in 2022 – – Occupancy At 99.8% –

Exhibit 99.1 ONE LIBERTY PROPERTIES REPORTS FOURTH QUARTER AND FULL YEAR 2022 RESULTS – Leased over 1.1 Million Square Feet in 2022 – – Occupancy At 99.8% – GREAT NECK, New York, March 13, 2023 — One Liberty Properties, Inc. (NYSE: OLP), a real estate investment trust focused on net leased properties, today announced operating results for the quarter and year ended December 31, 2022. “We are excit

March 13, 2023 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 13, 2023 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction of incorporation) (Commission

February 9, 2023 SC 13G/A

OLP / One Liberty Properties, Inc. / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SC 13G/A 1 tv01581-onelibertyproperties.htm SCHEDULE 13G/A SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 10)* Name of issuer: One Liberty Properties Inc. Title of Class of Securities: REIT CUSIP Number: 682406103 Date of Event Which Requires Filing of this Statement: December 30, 2022 Check the appropriate box to de

December 7, 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, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 7, 2022 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction of incorporation) (Commissi

December 7, 2022 EX-3.2

Amended and Restated By-Laws of OLP effective as of December 7, 2022 (incorporated by reference to Exhibit 3.2 to our Current Report on Form 8-K filed on December 12, 2022).

Exhibit 3.2 ONE LIBERTY PROPERTIES, INC. AMENDED AND RESTATED BY LAWS EFFECTIVE AS OF DECEMBER 7, 2022 ARTICLE I OFFICES Section 1. PRINCIPAL OFFICE. The principal office of the Corporation in the State of Maryland shall be located at such place as the Board of Directors may designate. Section 2. ADDITIONAL OFFICES. The Corporation may have additional offices, including a principal executive offic

November 9, 2022 EX-10.1

Fourth Amendment dated as of November 8, 2022 to Loan Agreement (incorporated by reference to Exhibit 10.1 our Current Report on Form 8-K filed November 9, 2022).

Exhibit 10.1 FOURTH AMENDMENT TO THIRD AMENDED AND RESTATED LOAN AGREEMENT AND OTHER LOAN DOCUMENTS This FOURTH AMENDMENT TO THIRD AMENDED AND RESTATED LOAN AGREEMENT AND OTHER LOAN DOCUMENTS (this ?Fourth Amendment?) dated as of November 8, 2022, among (1) ONE LIBERTY PROPERTIES, INC., a Maryland corporation, having its principal place of business at 60 Cutter Mill Road, Suite 303, Great Neck, Ne

November 9, 2022 8-K

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

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 8, 2022 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction of incorporation) (Commissi

November 4, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q

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 Commission File Number 001-09279 ONE LIBERTY PROPERTIES, INC.

November 3, 2022 EX-99.1

ONE LIBERTY PROPERTIES REPORTS THIRD QUARTER 2022 RESULTS

Exhibit 99.1 ONE LIBERTY PROPERTIES REPORTS THIRD QUARTER 2022 RESULTS Sold One Property for $4.1 Million Gain Same-Store Rental Income Increases Subsequent to Quarter End Secured Two Industrial Property Lease Extensions GREAT NECK, New York, November 3, 2022 ? One Liberty Properties, Inc. (NYSE: OLP), a real estate investment trust focused on net leased properties, today announced operating resul

November 3, 2022 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 3, 2022 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction of incorporation) (Commissi

September 15, 2022 EX-99.1

ONE LIBERTY PROPERTIES ANNOUNCES DIVIDEND AND EXPANDS SHARE REPURCHASE AUTHORIZATION

Exhibit 99.1 ONE LIBERTY PROPERTIES ANNOUNCES DIVIDEND AND EXPANDS SHARE REPURCHASE AUTHORIZATION GREAT NECK, NY ? September 15, 2022 ? One Liberty Properties, Inc. (NYSE: OLP) today announced that its Board of Directors declared a quarterly dividend on the Company?s common stock of $0.45 per share. The dividend will be payable on October 7, 2022 to stockholders of record as of the close of busine

September 15, 2022 8-K

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): September 15, 2022 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction of incorporation) (Commis

August 4, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q

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 Commission File Number 001-09279 ONE LIBERTY PROPERTIES, INC.

August 4, 2022 EX-10.1

Form of Performance Award Agreement for grants in 2022 pursuant to the 2022 Incentive Plan (incorporated by reference to Exhibit 10.1 to our Quarterly Report on Form 10-Q for the period ended June 30, 2022).

EXHIBIT 10.1 ? PERFORMANCE AWARDS AGREEMENT ONE LIBERTY PROPERTIES, INC. ? Name of Participant: Number of ROC Units: Number of TSR Units: Grant Date:June 21, 2022 ? THIS PERFORMANCE AWARD AGREEMENT is entered into as of the grant date (the ?Grant Date?) set forth above, between One Liberty Properties, Inc., a Maryland corporation (?Company?), and the participant identified above (the ?Participant?

August 3, 2022 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 3, 2022 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction (Commission file No.) (IRS Em

August 3, 2022 EX-99.1

ONE LIBERTY PROPERTIES REPORTS SECOND QUARTER 2022 RESULTS – Purchased 3 Industrial Properties – – Property Sales Generated $8.1 Million of Gains –

Exhibit 99.1 ONE LIBERTY PROPERTIES REPORTS SECOND QUARTER 2022 RESULTS ? Purchased 3 Industrial Properties ? ? Property Sales Generated $8.1 Million of Gains ? GREAT NECK, New York, August 3, 2022 ? One Liberty Properties, Inc. (NYSE: OLP), a real estate investment trust focused on net leased properties, today announced operating results for the quarter ended June 30, 2022. Patrick J. Callan, Jr.

June 10, 2022 EX-FILING FEES

Filing Fee Table

Exhibit 107.1 Calculation of Filing Fee Tables S-8 (Form Type) One Liberty Properties, Inc. (Exact Name of Registrant as Specified in its Charter) Table 1 Newly Registered Securities Security Type Security Class Title (1) Fee Calculation Rule Amount Registered(1) Proposed Maximum Offering Price Per Unit(2) Maximum Aggregate Offering Price(2) Fee Rate Amount of Registration Fee(2) Equity Common sto

June 10, 2022 S-8

As filed with the Securities and Exchange Commission on June 10, 2022

As filed with the Securities and Exchange Commission on June 10, 2022 Registration No.

June 9, 2022 EX-10.1

OLP 2022 Incentive Plan (incorporated by reference to Exhibit 10.1 to our Current Report on Form 8-K filed June 9, 2022).

Exhibit 10.1 ONE LIBERTY PROPERTIES, INC. 2022 INCENTIVE PLAN SECTION 1 EFFECTIVE DATE AND PURPOSE 1.1?Effective Date. This Plan (as defined) shall become effective upon approval by the stockholders of the Company (as defined), as and to the extent required by the listing requirements of the New York Stock Exchange. 1.2?Purpose of the Plan. The Plan is designed to motivate, retain and attract Part

June 9, 2022 8-K

Submission of Matters to a Vote of Security Holders, 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, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 9, 2022 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction of incorporation) (Commission f

May 6, 2022 EX-10.1

Settlement Agreement by and between OLP Wyoming Springs, LLC and Harden Healthcare, LLC

? EXHIBIT 10.1 ? SETTLEMENT AGREEMENT This Settlement Agreement (the ?Agreement?) is made and entered into by and between OLP Wyoming Springs, LLC (?OLP?) and Harden Healthcare, LLC (?Harden?). The parties to this Agreement are sometimes referred to herein individually as a ?Party? and collectively as the ?Parties.? RECITALS WHEREAS, OLP alleges that on or about November 10, 2010, Prevarian Senior

May 6, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q

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 Commission File Number 001-09279 ONE LIBERTY PROPERTIES, INC.

May 5, 2022 EX-99.1

ONE LIBERTY PROPERTIES REPORTS FIRST QUARTER 2022 RESULTS – Acquires Additional Industrial Property – – Property Sales Generate Gains of $4.6 Million and $6.9 Million in the First Quarter and Second Quarter, Respectively –

Exhibit 99.1 ONE LIBERTY PROPERTIES REPORTS FIRST QUARTER 2022 RESULTS ? Acquires Additional Industrial Property ? ? Property Sales Generate Gains of $4.6 Million and $6.9 Million in the First Quarter and Second Quarter, Respectively ? GREAT NECK, New York, May 5, 2022 ? One Liberty Properties, Inc. (NYSE: OLP), a real estate investment trust focused on net leased properties, today announced opera

May 5, 2022 8-K

Results of Operations and Financial Condition, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 5, 2022 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction of incorporation) (Commission fi

April 21, 2022 DEF 14A

Schedule 14A

TABLE OF CONTENTS 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 ? Filed by a Party other than the Registrant ?? Check the appropriate box: ?? ? ? Preliminary Proxy Statement ?? ? ? Confidential, for Use of the Commission Only (as permitt

April 19, 2022 8-K/A

Entry into a Material Definitive Agreement, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K/A CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 21, 2022 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction of incorporation) (Commi

April 19, 2022 8-K

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

SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 19, 2022 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction of incorporation) (Commission file No.) (IR

April 19, 2022 EX-99.1

ڏ 1 INVESTOR PRESENTATION APRIL 2022 1liberty.com ◆ 2 TABLE OF CONTENTS DESCRIPTION PAGE Table of Contents Safe Harbor Disclosure Company Overview Experienced Management Team Attractive Portfolio Fundamentals Portfolio Detail Diversified Portfolio Di

Exhibit 99.1 ڏ 1 INVESTOR PRESENTATION APRIL 2022 1liberty.com ◆ 2 TABLE OF CONTENTS DESCRIPTION PAGE Table of Contents Safe Harbor Disclosure Company Overview Experienced Management Team Attractive Portfolio Fundamentals Portfolio Detail Diversified Portfolio Diversified Tenant Base Financial Summary Operational Metrics Growth Oriented Balance Sheet Mortgage Debt Maturities Lease Maturity Profile

March 18, 2022 424B3

B. Riley Securities

TABLE OF CONTENTS Filed Pursuant to Rule 424(b)(3) Registration No. 333-237241 Prospectus Supplement (To Prospectus Supplement dated August 19, 2020 and accompanying prospectus dated August 13, 2020) One Liberty Properties, Inc. ? $32,094,620 Common Stock This prospectus supplement is being filed to update, amend and supplement certain information in the prospectus supplement, dated and filed with

March 18, 2022 EX-1.1

Letter agreement dated March 18, 2022 by and among OLP, Riley and Davidson (incorporated by reference to Exhibit 1.1 to our Current Report on Form 8-K filed on March 18, 2022).

EX-1.1 2 ny20003415x2ex1-1.htm EXHIBIT 1.1 Exhibit 1.1 March 18, 2022 D.A. Davidson & Co. 8 Third Street North Great Falls, MT 59401 Attention: Equity Syndicate Department Fax No.: (406) 791-7357 B. Riley Securities, Inc. 299 Park Avenue, 21st Floor New York, NY 10171 Attention: General Counsel Fax No.: (212) 457-9947 Re: Amended and Restated Equity Offering Sales Agreement dated August 19, 2020 (

March 18, 2022 8-K

Termination of a Material Definitive Agreement, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 18, 2022 ONE LIBERTY PROPERTIES INC (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction of incorporation) (Commission f

March 11, 2022 EX-21.1

Subsidiaries of the Registrant

EXHIBIT 21.1 SUBSIDIARIES OF THE COMPANY ? ? ? ? Company State of Organization OLP Greenwood Village, Colorado, Inc. ? Colorado OLP 4809 Louisville LLC ? Delaware OLP 6609 Grand LLC ? Delaware OLP Air Trans Road TN LLC ? Delaware OLP Ankeny IA LLC ? Delaware OLP Ann Arbor LLC ? Delaware OLP Ashland VA LLC ? Delaware OLP Athens LLC ? Delaware OLP Bakersfield CA LLC ? Delaware OLP Battleground Avenu

March 11, 2022 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K

Table of Contents ? ? UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.

March 10, 2022 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 10, 2022 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction of incorporation) (Commission

March 10, 2022 EX-99.1

ONE LIBERTY PROPERTIES REPORTS FOURTH QUARTER AND FULL YEAR 2021 RESULTS ~ Occupancy at Quarter-End 99.2 % ~ ~ Strong Leasing in 2021 Positions Company for the Long-Term ~

Exhibit 99.1 ONE LIBERTY PROPERTIES REPORTS FOURTH QUARTER AND FULL YEAR 2021 RESULTS ~ Occupancy at Quarter-End 99.2 % ~ ~ Strong Leasing in 2021 Positions Company for the Long-Term ~ GREAT NECK, New York, March 10, 2022 ? One Liberty Properties, Inc. (NYSE: OLP), a real estate investment trust focused on net leased properties, today announced operating results for the quarter and year ended Dece

February 25, 2022 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 21, 2022 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction of incorporation) (Commiss

February 10, 2022 SC 13G/A

OLP / One Liberty Properties, Inc. / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 9)* Name of issuer: One Liberty Properties Inc. Title of Class of Securities: REIT CUSIP Number: 682406103 Date of Event Which Requires Filing of this Statement: December 31, 2021 Check the appropriate box to designate the rule pursuant to which this Schedule is filed: ?

November 5, 2021 EX-10.1

Form of Performance Award Agreement for grants in 2021 pursuant to the 2019 Incentive Plan (incorporated by reference to Exhibit 10.1 to our Quarterly Report on Form 10-Q for the quarter ended September 30, 2021).

EXHIBIT 10.1 ? ? PERFORMANCE AWARDS AGREEMENT ONE LIBERTY PROPERTIES, INC. ? Name of Participant: Number of ROC Units: Number of TSR Units: Grant Date:August 3, 2021 ? THIS PERFORMANCE AGREEMENT is entered into as of the grant date (the ?Grant Date?) set forth above, between One Liberty Properties, Inc., a Maryland corporation (?Company?), and the participant identified above (the ?Participant?).

November 5, 2021 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q

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 Commission File Number 001-09279 ONE LIBERTY PROPERTIES, INC.

November 4, 2021 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 4, 2021 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction of incorporation) (Commissi

November 4, 2021 EX-99.1

ONE LIBERTY PROPERTIES REPORTS THIRD QUARTER 2021 RESULTS

Exhibit 99.1 ONE LIBERTY PROPERTIES REPORTS THIRD QUARTER 2021 RESULTS GREAT NECK, New York, November 4, 2021 ? One Liberty Properties, Inc. (NYSE: OLP), a real estate investment trust focused on net leased properties, today announced operating results for the quarter ended September 30, 2021. Operating Results: Rental income was $20.3 million in the third quarter of 2021, compared to $21.1 millio

August 12, 2021 8-K

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

SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 12, 2021 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction (Commission file No.) (IRS Employer of inc

August 12, 2021 EX-99.1

ڏ 1 INVESTOR PRESENTATION AUGUST 2021 1liberty.com TABLE OF CONTENTS ڏ 2 DESCRIPTION PAGE Table of Contents Safe Harbor Disclosure Company Overview Experienced Management Team Attractive Portfolio Fundamentals Portfolio Detail Diversified Portfolio D

Exhibit 99.1 ? 1 INVESTOR PRESENTATION AUGUST 2021 1liberty.com TABLE OF CONTENTS ? 2 DESCRIPTION PAGE Table of Contents Safe Harbor Disclosure Company Overview Experienced Management Team Attractive Portfolio Fundamentals Portfolio Detail Diversified Portfolio Diversified Tenant Base Financial Summary Operational Metrics Steady Dividend Growth Oriented Balance Sheet Mortgage Debt Maturities Lease

August 5, 2021 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q

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 Commission File Number 001-09279 ONE LIBERTY PROPERTIES, INC.

August 4, 2021 8-K

Results of Operations and Financial Condition, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 4, 2021 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction of incorporation) (Commission

August 4, 2021 EX-99.1

ONE LIBERTY PROPERTIES REPORTS SECOND QUARTER 2021 RESULTS

Exhibit 99.1 ONE LIBERTY PROPERTIES REPORTS SECOND QUARTER 2021 RESULTS GREAT NECK, New York, August 4, 2021 ? One Liberty Properties, Inc. (NYSE: OLP), a real estate investment trust focused on net leased properties, today announced operating results for the quarter ended June 30, 2021. ?As we emphasize acquiring industrial assets, given the competitive environment for these properties, we will c

July 12, 2021 EX-99.1

ᶺ 1 INVESTOR PRESENTATION JULY 2021 1liberty.com ◆ 2 TABLE OF CONTENTS DESCRIPTION PAGE Table of Contents Safe Harbor Disclosure Company Overview Experienced Management Team Attractive Portfolio Fundamentals Portfolio Detail Diversified Portfolio Div

Exhibit 99.1 ? 1 INVESTOR PRESENTATION JULY 2021 1liberty.com ? 2 TABLE OF CONTENTS DESCRIPTION PAGE Table of Contents Safe Harbor Disclosure Company Overview Experienced Management Team Attractive Portfolio Fundamentals Portfolio Detail Diversified Portfolio Diversified Tenant Base Financial Summary Operational Metrics Steady Dividend Growth Oriented Balance Sheet Mortgage Debt Maturities Lease M

July 12, 2021 8-K

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

SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 12, 2021 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction of incorporation) (Commission file No.) (IRS

June 21, 2021 8-K

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 21, 2021 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction of incorporation) (Commission

June 21, 2021 EX-99.1

ONE LIBERTY PROPERTIES SELLS RETAIL PROPERTY FOR $40.5 MILLION — Anticipates Reporting a Gain Over $21 Million — — Provides Leasing Update —

Exhibit 99.1 ONE LIBERTY PROPERTIES SELLS RETAIL PROPERTY FOR $40.5 MILLION ? Anticipates Reporting a Gain Over $21 Million ? ? Provides Leasing Update ? GREAT NECK, New York, June 21, 2021 ? One Liberty Properties, Inc. (NYSE: OLP), an owner and manager of a primarily industrial portfolio along with other net leased assets that are geographically diversified, today announced that it closed on a $

June 10, 2021 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 10, 2021 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other (Commission file No.) (IRS Employer jurisdi

May 6, 2021 10-Q

Quarterly Report - 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, 2021 OR ? Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Commission File Number 001-09279 ONE LIBERTY PROPERTIES, INC.

May 6, 2021 EX-3.2

Amended and Restated By-Laws of One Liberty Properties, Inc.

EXHIBIT 3.2 ? ONE LIBERTY PROPERTIES, INC. ? AMENDED AND RESTATED BY LAWS ? ? ARTICLE I OFFICES ? Section 1. PRINCIPAL OFFICE. The principal office of the Corporation in the State of Maryland shall be located at such place as the Board of Directors may designate. ? Section 2. ADDITIONAL OFFICES. The Corporation may have additional offices, including a principal executive office, at such places as

May 5, 2021 8-K

Results of Operations and Financial Condition, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 5, 2021 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction of incorporation) (Commission fi

May 5, 2021 EX-99.1

ONE LIBERTY PROPERTIES REPORTS FIRST QUARTER 202 1 RESULTS - Collects Over 98% of First Quarter Rents -

Exhibit 99.1 ONE LIBERTY PROPERTIES REPORTS FIRST QUARTER 202 1 RESULTS - Collects Over 98% of First Quarter Rents - GREAT NECK, New York, May 5, 2021 ? One Liberty Properties, Inc. (NYSE: OLP), a real estate investment trust focused on net leased properties, today announced operating results for the quarter ended March 31, 2021. Patrick J. Callan, Jr., President and Chief Executive Officer of One

April 26, 2021 DEF 14A

- DEF 14A

TABLE OF CONTENTS 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 ? Filed by a Party other than the Registrant ?? Check the appropriate box: ?? ? ? Preliminary Proxy Statement ?? ? ? Confidential, for Use of the Commission Only (as permitt

March 12, 2021 10-K

Annual Report - 10-K

Table of Contents ? ? UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.

March 12, 2021 EX-10.4

Third Amendment to Loan Agreement dated as of March 3, 2021 (incorporated by reference to Exhibit 10.4 to our Annual Report on Form 10-K for the year ended December 31, 2020)

EXHIBIT 10.4 ? ? THIRD AMENDMENT TO THIRD AMENDED AND RESTATED LOAN AGREEMENT AND OTHER LOAN DOCUMENTS This THIRD AMENDMENT TO THIRD AMENDED AND RESTATED LOAN AGREEMENT AND OTHER LOAN DOCUMENTS (this ?Third Amendment?) dated as of the 3rd day of March, 2021, effective as of February 28, 2021, among (1) ONE LIBERTY PROPERTIES, INC., a Maryland corporation, having its principal place of business at

March 12, 2021 EX-3.1

Articles of Amendment and Restatement of OLP (incorporated by reference to Exhibit 3.1 to our Annual Report on Form 10-K filed on March 12, 2021).

? EXHIBIT 3.1 ? ONE LIBERTY PROPERTIES, INC. ARTICLES OF AMENDMENT AND RESTATEMENT This is to certify that: FIRST: One Liberty Properties, Inc., a Maryland Corporation (the ?Corporation?), desires to amend and restate its Articles of Incorporation as currently in effect and as hereafter amended. SECOND: The following provisions are all the provisions of the Articles of Incorporation currently in e

March 12, 2021 8-K

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

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 12, 2021 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction (Commission file No.) (IRS Em

March 12, 2021 EX-4.5

Description of Registrant’s Securities Registered Pursuant to Section 12 of the Securities Exchange Act of 1934 (incorporated by reference to Exhibit 4.5 to our Annual Report on Form 10-K for the year ended December 31, 2020)

EXHIBIT 4.5 ? DESCRIPTION OF REGISTRANT?S SECURITIES REGISTERED PURSUANT TO SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934 The following is a description of One Liberty Properties, Inc.?s securities registered under Section 12 of the Securities Exchange Act of 1934, as amended (the ?Exchange Act?), as of December 31, 2020, and certain provisions of the Maryland General Corporation Law (the ?MGC

March 12, 2021 EX-21.1

Subsidiaries of the Registrant

EXHIBIT 21.1 SUBSIDIARIES OF THE COMPANY ? ? ? ? Company State of Organization OLP Greenwood Village, Colorado, Inc. ? Colorado OLP 4809 Louisville LLC ? Delaware OLP 6609 Grand LLC ? Delaware OLP Air Trans Road TN LLC ? Delaware OLP Ankeny IA LLC ? Delaware OLP Ann Arbor LLC ? Delaware OLP Ashland VA LLC ? Delaware OLP Athens LLC ? Delaware OLP BD Delray JV LLC ? Delaware OLP Bakersfield CA LLC ?

March 12, 2021 EX-99.1

ONE LIBERTY PROPERTIES REPORTS FOURTH QUARTER AND FULL YEAR 2020 RESULTS ~Industrial Properties Contributed More than 50% of Rental Income in 2020~

Exhibit 99.1 ONE LIBERTY PROPERTIES REPORTS FOURTH QUARTER AND FULL YEAR 2020 RESULTS ~Industrial Properties Contributed More than 50% of Rental Income in 2020~ GREAT NECK, New York, March 12, 2021 — One Liberty Properties, Inc. (NYSE: OLP), a real estate investment trust focused on net leased properties, today announced operating results for the quarter and year ended December 31, 2020. "We effec

March 9, 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, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 4, 2021 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction of incorporation) (Commission

February 10, 2021 SC 13G/A

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 8)*

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 8)* Name of issuer: One Liberty Properties Inc. Title of Class of Securities: REIT CUSIP Number: 682406103 Date of Event Which Requires Filing of this Statement: December 31, 2020 Check the appropriate box to designate the rule pursuant to which this Schedule is filed: ☒

January 8, 2021 8-K

Regulation FD Disclosure, Financial Statements and Exhibits - CURRENT REPORT

SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 8, 2021 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction (Commission file No.) (IRS Employer of inc

January 8, 2021 EX-99.1

ڏ 1 INVESTOR PRESENTATION JANUARY 2021 onelibertyproperties.com DESCRIPTION ڏ 2 PAGE Table of Contents Safe Harbor Disclosure Company Overview Experienced Management Team Attractive Portfolio Fundamentals Portfolio Detail COVID - 19 Impact on Rent Co

Exhibit 99.1 ڏ 1 INVESTOR PRESENTATION JANUARY 2021 onelibertyproperties.com DESCRIPTION ڏ 2 PAGE Table of Contents Safe Harbor Disclosure Company Overview Experienced Management Team Attractive Portfolio Fundamentals Portfolio Detail COVID - 19 Impact on Rent Collections Diversified Portfolio Diversified Tenant Base Financial Summary Operational Metrics Steady Dividend Growth Oriented Balance She

December 3, 2020 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers - CURRENT REPORT

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 2, 2020 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction of incorporation) (Commissi

November 5, 2020 10-Q

Quarterly Report - 10-Q

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, 2020 OR ☐ Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Commission File Number 001-09279 ONE LIBERTY PROPERTIES, INC.

November 4, 2020 8-K

Results of Operations and Financial Condition, Financial Statements and Exhibits - CURRENT REPORT

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 4, 2020 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction (Commission file No.) (IRS

November 4, 2020 EX-99.1

ONE LIBERTY PROPERTIES REPORTS THIRD QUARTER 2020 RESULTS

Exhibit 99.1 ONE LIBERTY PROPERTIES REPORTS THIRD QUARTER 2020 RESULTS GREAT NECK, New York, November 4, 2020 — One Liberty Properties, Inc. (NYSE: OLP), a real estate investment trust focused on net leased properties, today announced operating results for the quarter ended September 30, 2020. Patrick J. Callan, Jr., President and Chief Executive Officer of One Liberty commented, “We continue to w

August 19, 2020 424B5

D.A. Davidson & Co.

TABLE OF CONTENTS Filed Pursuant to Rule 424(b)(5) Registration No. 333-237241 Prospectus Supplement (To Prospectus dated August 13, 2020) One Liberty Properties, Inc.   $36,158,222 Common Stock We have entered into an amended and restated equity offering sales agreement, or the sales agreement, with each of D.A. Davidson & Co. and B. Riley Securities, Inc., each, an Agent, and collectively, the A

August 19, 2020 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits - CURRENT REPORT

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 19, 2020 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction of incorporation) (Commissio

August 19, 2020 EX-1.1

Amended and Restated Equity Offering Sales Agreement by and among the Agents and the Registrant.

Exhibit 1.1 EXECUTION VERSION One Liberty Properties, Inc. Common Stock ($1.00 par value per share) AMENDED AND RESTATED EQUITY OFFERING SALES AGREEMENT August 19, 2020 D.A. Davidson & Co. 8 Third Street North Great Falls, MT 59401 B. Riley Securities, Inc. 299 Park Avenue, 21st Floor New York, NY 10171 Ladies and Gentlemen: One Liberty Properties, Inc., a Maryland corporation (the “Company”), pro

August 11, 2020 S-3/A

- S-3/A

TABLE OF CONTENTS AS FILED WITH THE UNITED STATES SECURITIES AND EXCHANGE COMMISSION ON AUGUST 11, 2020 REGISTRATION NO.

August 10, 2020 EX-99.1

ڏ 1 INVESTOR PRESENTATION AUGUST 2020 onelibertyproperties.com DESCRIPTION PAGE ڏ 2 Table of Contents Safe Harbor Disclosure Company Overview Experienced Management Team Attractive Portfolio Fundamentals Portfolio Detail Diversified Portfolio Diversi

Exhibit 99.1 ڏ 1 INVESTOR PRESENTATION AUGUST 2020 onelibertyproperties.com DESCRIPTION PAGE ڏ 2 Table of Contents Safe Harbor Disclosure Company Overview Experienced Management Team Attractive Portfolio Fundamentals Portfolio Detail Diversified Portfolio Diversified Tenant Base Financial Summary Steady Operations Growth Oriented Balance Sheet Mortgage Debt Maturities Lease Maturity Profile Stable

August 10, 2020 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 10, 2020 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction (Commission file No.) (IRS Employer of inc

August 7, 2020 10-Q

Quarterly Report - FORM 10-Q

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, 2020 OR ☐ Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Commission File Number 001-09279 ONE LIBERTY PROPERTIES, INC.

August 6, 2020 8-K

Results of Operations and Financial Condition, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 6, 2020 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction of incorporation) (Commission

August 6, 2020 EX-99.1

ONE LIBERTY PROPERTIES REPORTS SECOND QUARTER 2020 RESULTS

Exhibit 99.1 ONE LIBERTY PROPERTIES REPORTS SECOND QUARTER 2020 RESULTS GREAT NECK, New York, August 6, 2020 — One Liberty Properties, Inc. (NYSE: OLP), a real estate investment trust focused on net leased properties, today announced operating results for the quarter ended June 30, 2020. “As we navigate these unprecedented times, we continue to work diligently to mitigate the impact of COVID-19 on

July 14, 2020 8-K

Entry into a Material Definitive Agreement, Other Events, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 8, 2020 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction of incorporation) (Commission f

July 14, 2020 EX-10.1

Second Amendment to Loan Agreement dated as of July 8, 2020 (incorporated by reference to Exhibit 10.1 to our Current Report on Form 8-K filed July 14, 2020).

Exhibit 10.1 SECOND AMENDMENT TO THIRD AMENDED AND RESTATED LOAN AGREEMENT AND OTHER LOAN DOCUMENTS This SECOND AMENDMENT TO THIRD AMENDED AND RESTATED LOAN AGREEMENT AND OTHER LOAN DOCUMENTS (this “Second Amendment”) dated as of the 8th day of July, 2020, among (1) ONE LIBERTY PROPERTIES, INC., a Maryland corporation, having its principal place of business at 60 Cutter Mill Road, Suite 303, Great

July 9, 2020 8-K/A

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

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K/A CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 30, 2020 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction (Commission file No.) (IRS E

July 9, 2020 EX-3.1

Articles of Amendment and Restatement of the Company.

Exhibit 3.1 ONE LIBERTY PROPERTIES, INC. ARTICLES OF AMENDMENT AND RESTATEMENT This is to certify that: FIRST: One Liberty Properties, Inc., a Maryland Corporation (the “Corporation”), desires to amend and restate its Articles of Incorporation as currently in effect and as hereafter amended. SECOND: The following provisions are all the provisions of the Articles of Incorporation currently in effec

July 9, 2020 EX-3.2

Amended and Restated Bylaws of the Company.

Exhibit 3.2 ONE LIBERTY PROPERTIES, INC. AMENDED AND RESTATED BY LAWS ARTICLE I OFFICES Section 1. PRINCIPAL OFFICE. The principal office of the Corporation in the State of Maryland shall be located at such place as the Board of Directors may designate. Section 2. ADDITIONAL OFFICES. The Corporation may have additional offices, including a principal executive office, at such places as the Board of

July 7, 2020 8-K

Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year, Material Modification to Rights of Security Holders, Financial Statements and Exhibits, Other Events, Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 30, 2020 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction (Commission file No.) (IRS Emp

July 7, 2020 EX-3.2

Amended and Restated Bylaws of the Company.

EX-3.2 3 ea123795ex3-2oneliberty.htm AMENDED AND RESTATED BYLAWS OF THE COMPANY Exhibit 3.2 ONE LIBERTY PROPERTIES, INC. AMENDED AND RESTATED BY LAWS ARTICLE I OFFICES Section 1. PRINCIPAL OFFICE. The principal office of the Corporation in the State of Maryland shall be located at such place as the Board of Directors may designate. Section 2. ADDITIONAL OFFICES. The Corporation may have additional

July 7, 2020 EX-3.1

Articles of Amendment and Restatement of the Company.

Exhibit 3.1 ONE LIBERTY PROPERTIES, INC. ARTICLES OF AMENDMENT AND RESTATEMENT This is to certify that: FIRST: One Liberty Properties, Inc., a Maryland Corporation (the “Corporation”), desires to amend and restate its Articles of Incorporation as currently in effect and as hereafter amended. SECOND: The following provisions are all the provisions of the Articles of Incorporation currently in effec

June 3, 2020 DEFA14A

- DEFINITIVE ADDITIONAL MATERIALS

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 o Check the appropriate box: o Preliminary Proxy Statement o Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) o Defin

May 8, 2020 10-Q

Quarterly Report - FORM 10-Q

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, 2020 OR ☐ Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Commission File Number 001-09279 ONE LIBERTY PROPERTIES, INC.

May 7, 2020 8-K

Results of Operations and Financial Condition, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 7, 2020 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction of incorporation) (Commission fi

May 7, 2020 EX-99.1

ONE LIBERTY PROPERTIES REPORTS FIRST QUARTER 2020 RESULTS

Exhibit 99.1 ONE LIBERTY PROPERTIES REPORTS FIRST QUARTER 2020 RESULTS GREAT NECK, New York, May 7, 2020 — One Liberty Properties, Inc. (NYSE: OLP), a real estate investment trust focused on net leased properties, today announced operating results for the quarter ended March 31, 2020. “With the global spread of the COVID-19 pandemic and various governmental responses thereto continuing to affect t

April 23, 2020 DEFA14A

- 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.   ) 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 (as permitted by Rule 14a-6(e)(2))  ☐

April 23, 2020 DEF 14A

April 23, 2020

TABLE OF CONTENTS 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 ☒ 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 Ru

April 3, 2020 PRE 14A

OLP / One Liberty Properties, Inc. PRE 14A - - PRE 14A

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 ☒ 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 18, 2020 DEL AM

OLP / One Liberty Properties, Inc. DEL AM - - SEPARATELY FILED DELAYING AMENDMENT

ONE LIBERTY PROPERTIES, INC. 60 Cutter Mill Road Great Neck, New York 11021 March 18, 2020 By EDGAR Securities and Exchange Commission 100 F Street, N.E., Washington, DC 20549 Attention: Mr. Jonathan Burr, Attorney-Advisor, Division of Corporation Finance Re: One Liberty Properties, Inc. Registration Statement on Form S-3 (File No. 333-237241) Dear Mr. Burr: Reference is made to the Registration S

March 17, 2020 S-3

OLP / One Liberty Properties, Inc. S-3 - - REGISTRATION STATEMENT

AS FILED WITH THE UNITED STATES SECURITIES AND EXCHANGE COMMISSION ON MARCH 17, 2020 REGISTRATION NO.

March 16, 2020 EX-10.11

Form of Restricted Stock Award Agreement for awards granted in 2020 and 2021 pursuant to the 2019 Incentive Plan (incorporated by reference to Exhibit 10.11 to our Annual Report on Form 10-K for the year ended December 31, 2019).

Exhibit 10.11 RESTRICTED STOCK AWARDS AGREEMENT RESTRICTED STOCK AWARDS AGREEMENT, dated as of January 17, 2020, by and between One Liberty Properties, Inc., a Maryland corporation, having its principal place of business at 60 Cutter Mill Road, Great Neck, New York 11021 (the “Company”) and the person named on the signature page of this Agreement (“Holder”). W I T N E S S E T H A. The Board of Dir

March 16, 2020 10-K

Annual Report - 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 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, 2019 Or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number 001-09279 ONE LIBERTY PROPERTIES, INC. (Exact name o

March 16, 2020 EX-21.1

Subsidiaries of the Registrant

Exhibit 21.1 SUBSIDIARIES OF THE COMPANY Company State of Organization OLP Greenwood Village, Colorado, Inc. Colorado OLP 4809 Louisville LLC Delaware OLP 6609 Grand LLC Delaware OLP Air Trans Road TN LLC Delaware OLP Ankeny IA LLC Delaware OLP Ann Arbor LLC Delaware OLP Athens LLC Delaware OLP BD Delray JV LLC Delaware OLP Bakersfield CA LLC Delaware OLP Battleground Avenue Greensboro LLC Delawar

March 16, 2020 EX-4.5

Exhibit 4.5

Exhibit 4.5 DESCRIPTION OF REGISTRANT’S SECURITIES REGISTERED PURSUANT TO SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934 The following is a description of One Liberty Properties, Inc.’s securities registered under Section 12 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), as of December 31, 2019, and certain provisions of the Maryland General Corporation Law (the “MGCL”

March 13, 2020 8-K

Results of Operations and Financial Condition, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 13, 2020 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction (Commission file No.) (IRS Em

March 13, 2020 EX-99.1

ONE LIBERTY PROPERTIES REPORTS FOURTH QUARTER AND FULL YEAR 2019 RESULTS - Quarterly Rental Income Grows 5.9% Above Prior Year -

Exhibit 99.1 ONE LIBERTY PROPERTIES REPORTS FOURTH QUARTER AND FULL YEAR 2019 RESULTS - Quarterly Rental Income Grows 5.9% Above Prior Year - GREAT NECK, New York, March 13, 2020 — One Liberty Properties, Inc. (NYSE: OLP), a real estate investment trust focused on net leased properties, today announced operating results for the quarter and year ended December 31, 2019. Patrick J. Callan, Jr., Pres

February 12, 2020 SC 13G/A

OLP / One Liberty Properties, Inc. / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 7)* Name of issuer: One Liberty Properties Inc Title of Class of Securities: REIT CUSIP Number: 682406103 Date of Event Which Requires Filing of this Statement: December 31, 2019 Check the appropriate box to designate the rule pursuant to which this Schedule is filed: ☒ 

December 12, 2019 8-K

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 11, 2019 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction of incorporation) (Commiss

December 12, 2019 EX-99.1

ONE LIBERTY PROPERTIES SELLS ROUND ROCK, TEXAS PROPERTY FOR $16.6 MILLION

Exhibit 99.1 ONE LIBERTY PROPERTIES SELLS ROUND ROCK, TEXAS PROPERTY FOR $16.6 MILLION GREAT NECK, New York, December 11, 2019 — One Liberty Properties, Inc. (NYSE: OLP) an acquirer, owner and manager of a geographically diversified portfolio of net leased properties, today announced that it sold an 87,500 square foot assisted living facility in Round Rock, Texas, for a sales price of $16.6 millio

November 22, 2019 EX-99.1

◆ 1 INVESTOR PRESENTATION DECEMBER 2019 onelibertyproperties.com ◆ 2 DESCRIPTION PAGE Table of Contents 2 Safe Harbor Disclosure 3 Company Overview 4 Experienced Management Team 5 Attractive Portfolio Fundamentals 6 Portfolio Detail 7 Diversified Por

Exhibit 99.1 ◆ 1 INVESTOR PRESENTATION DECEMBER 2019 onelibertyproperties.com ◆ 2 DESCRIPTION PAGE Table of Contents 2 Safe Harbor Disclosure 3 Company Overview 4 Experienced Management Team 5 Attractive Portfolio Fundamentals 6 Portfolio Detail 7 Diversified Portfolio 8 Diversified Tenant Base 9 Financial Summary 10 Targeting Long Term Total Return 11 Growth in Operations 12 - 13 Growth Oriented

November 22, 2019 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 22, 2019 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction of incorporation) (Commiss

November 8, 2019 10-Q

Quarterly Report - 10-Q

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, 2019 OR ☐ Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Commission File Number 001-09279 ONE LIBERTY PROPERTIES, INC.

November 7, 2019 EX-99.1

ONE LIBERTY PROPERTIES REPORTS THIRD QUARTER 2019 RESULTS — Quarterly Rental Income Grows 6.3% Above Prior Year —

Exhibit 99.1 ONE LIBERTY PROPERTIES REPORTS THIRD QUARTER 2019 RESULTS — Quarterly Rental Income Grows 6.3% Above Prior Year — GREAT NECK, New York, November 7, 2019 — One Liberty Properties, Inc. (NYSE: OLP), a real estate investment trust focused on net leased properties, today announced operating results for the quarter ended September 30, 2019. Patrick J. Callan, Jr., President and Chief Execu

November 7, 2019 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 7, 2019 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction (Commission file No.) (IRS

September 11, 2019 8-K

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

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): September 11, 2019 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction of incorporation) (Commis

August 9, 2019 EX-1.1

Equity Offering Sales Agreement, dated August 19, 2020 by and between One Liberty Properties, Inc., D.A. Davidson & Co. and B. Riley FBR, Inc. (incorporated by reference to Exhibit 1.1 to our Current Report on Form 8-K filed on August 19, 2020).

Exhibit 1.1 One Liberty Properties, Inc. Common Stock ($1.00 par value per share) EQUITY OFFERING SALES AGREEMENT August 9, 2019 D.A. Davidson & Co. 8 Third Street North Great Falls, MT 59401 B. Riley FBR, Inc. 299 Park Avenue, 21st Floor New York, NY 10171 Ladies and Gentlemen: One Liberty Properties, Inc., a Maryland corporation (the “Company”), proposes, subject to the terms and conditions stat

August 9, 2019 8-K

Entry into a Material Definitive Agreement, Termination of a Material Definitive Agreement, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 9 , 2019 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction of incorporation) (Commissio

August 9, 2019 424B5

TABLE OF CONTENTS Page Prospectus Supplement About This Prospectus Supplement S-1 Incorporation of Certain Information By Reference S-1 Cautionary Statement Concerning Forward-Looking Statements S-2 Prospectus Supplement Summary S-4 Risk Factors S-6

TABLE OF CONTENTS Filed Pursuant to Rule 424(b)(5) Registration No. 333-216611 Prospectus Supplement (To Prospectus dated May 10, 2017) One Liberty Properties, Inc.   $36,158,222 Common Stock We have entered into an equity offering sales agreement, or the sales agreement, with each of D.A. Davidson & Co. and B. Riley FBR, Inc., each, an Agent, and collectively, the Agents, relating to the shares o

August 7, 2019 EX-99.1

ONE LIBERTY PROPERTIES REPORTS SECOND QUARTER 2019 RESULTS — Quarterly Rental Income Grows 4.5% Above Prior Year —

Exhibit 99.1 ONE LIBERTY PROPERTIES REPORTS SECOND QUARTER 2019 RESULTS — Quarterly Rental Income Grows 4.5% Above Prior Year — GREAT NECK, New York, August 7, 2019 — One Liberty Properties, Inc. (NYSE: OLP), a real estate investment trust focused on net leased properties, today announced operating results for the quarter ended June 30, 2019. Patrick J. Callan, Jr., President and Chief Executive O

August 7, 2019 8-K

Results of Operations and Financial Condition, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 7, 2019 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction (Commission file No.) (IRS Em

August 7, 2019 EX-10.1

First Amendment to Loan Agreement dated July 1, 2019 (incorporated by reference to Exhibit 10.1 to our Quarterly Report on Form 10-Q for the quarter ended June 30, 2019).

Exhibit 10.1 FIRST AMENDMENT TO THIRD AMENDED AND RESTATED LOAN AGREEMENT AND OTHER LOAN DOCUMENTS This FIRST AMENDMENT TO THIRD AMENDED AND RESTATED LOAN AGREEMENT AND OTHER LOAN DOCUMENTS (this “First Amendment”) dated as of the 1st day of July, 2019, among (1) ONE LIBERTY PROPERTIES, INC., a Maryland corporation, having its principal place of business at 60 Cutter Mill Road, Suite 303, Great Ne

August 7, 2019 10-Q

Quarterly Report - 10-Q

Table of Contents 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 o Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Commission File Number 001-09279 ONE LIBERTY PROPERTIES, INC.

August 7, 2019 EX-10.2

Form of Performance Award Agreement for grants in 2019 and 2020 pursuant to the 2019 Incentive Plan (incorporated by reference to Exhibit 10.2 to our Quarterly Report on Form 10-Q for the quarter ended June 30, 2019).

Exhibit 10.2 PERFORMANCE AWARDS AGREEMENT — ONE LIBERTY PROPERTIES, INC. AND THIS AGREEMENT is entered into on July 1, 2019, between One Liberty Properties, Inc., a Maryland corporation (“Company”), and , (“Participant”). WHEREAS, the stockholders of the Company have adopted the One Liberty Properties, Inc. 2019 Incentive Plan (“Plan”); and WHEREAS, the Compensation Committee of the Board of Direc

July 8, 2019 8-K

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

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 1, 2019 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction of incorporation) (Commission f

June 14, 2019 S-8

OLP / One Liberty Properties, Inc. S-8 - - REGISTRATION STATEMENT

As filed with the Securities and Exchange Commission on June 14, 2019 Registration No.

June 14, 2019 S-3D

OLP / One Liberty Properties, Inc. S-3D - - REGISTRATION STATEMENT

As filed with the Securities and Exchange Commission on June 14, 2019 Registration No.

June 14, 2019 EX-99.1

Form of Enrollment Application.

Exhibit 99.1 ENROLLMENT APPLICATION DIVIDEND REINVESTMENT PLAN FOR SHARES OF COMMON STOCK OF ONE LIBERTY PROPERTIES, INC. I wish to participate in the Dividend Reinvestment Plan (the “Plan”) for the purchase of whole and partial shares of Common Stock (“Shares”) of One Liberty Properties, Inc. (the “Company”) as follows: Check one box only (☒). If you do not check any box, then FULL DIVIDEND REINV

June 13, 2019 EX-4.1

One Liberty Properties, Inc. 2019 Incentive Plan (incorporated by reference to Exhibit 4.1 to our Current Report on Form 8-K filed June 13, 2019).

Exhibit 4.1 ONE LIBERTY PROPERTIES, INC. 2019 INCENTIVE PLAN SECTION 1 EFFECTIVE DATE AND PURPOSE 1.1 Effective Date. This Plan (as defined) shall become effective upon approval by the stockholders of the Company (as defined), as and to the extent required by the listing requirements of the New York Stock Exchange. 1.2 Purpose of the Plan. The Plan is designed to motivate, retain and attract Parti

June 13, 2019 EX-14.1

Registrant’s Amended and Restated Code of Business Conduct and Ethics dated June 13, 2019

Exhibit 14.1 ONE LIBERTY PROPERTIES, INC. CODE OF BUSINESS CONDUCT AND ETHICS AMENDED AND RESTATED AS OF JUNE 13, 2019 I. PURPOSE What is the purpose of this Code of Business Conduct and Ethics? This Code of Business Conduct and Ethics (the “Code”) contains general guidelines for conducting the business of One Liberty Properties, Inc. (the “Company”), consistent with the highest standards of busin

June 13, 2019 8-K

Amendment to Registrant's Code of Ethics, or Waiver of a Provision of the Code of Ethics, Submission of Matters to a Vote of Security Holders, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 13, 2019 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction of incorporation) (Commission

May 10, 2019 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 10, 2019 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction of incorporation) (Commission f

May 10, 2019 EX-99.1

◆ 1 INVESTOR PRESENTATION MAY 2019 onelibertyproperties.com

Exhibit 99.1 ◆ 1 INVESTOR PRESENTATION MAY 2019 onelibertyproperties.com ◆ 2 DESCRIPTION PAGE Table of Contents 2 Safe Harbor Disclosure 3 Company Overview 4 Experienced Management Team 5 Attractive Portfolio Fundamentals 6 Portfolio Detail 7 Diversified Portfolio 8 Diversified Tenant Base 9 Financial Summary 10 Targeting Long Term Total Return 11 Growth in Operations 12 - 13 Growth Oriented Balan

May 9, 2019 10-Q

Form 10-Q

Table of Contents 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 o Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Commission File Number 001-09279 ONE LIBERTY PROPERTIES, INC.

May 7, 2019 EX-99.1

ONE LIBERTY PROPERTIES REPORTS FIRST QUARTER 2019 RESULTS - Rental Income Grows 8.7% -

EX-99.1 2 f8k050719ex99-1oneliberty.htm PRESS RELEASE DATED MAY 7, 2019 Exhibit 99.1 ONE LIBERTY PROPERTIES REPORTS FIRST QUARTER 2019 RESULTS - Rental Income Grows 8.7% - GREAT NECK, New York, May 7, 2019 — One Liberty Properties, Inc. (NYSE: OLP), a real estate investment trust focused on net leased properties, today announced operating results for the quarter ended March 31, 2019. “We are off t

May 7, 2019 8-K

Results of Operations and Financial Condition, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 7, 2019 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction of incorporation) (Commission fi

April 23, 2019 DEF 14A

April 23, 2019

TABLE OF CONTENTS 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 ☒ Filed by a Party other than the Registrant  o Check the appropriate box:  o Preliminary Proxy Statement  o Confidential, for Use of the Commission Only (as permitted by Rule

March 18, 2019 EX-99.1

ONE LIBERTY PROPERTIES REPORTS FOURTH QUARTER AND FULL YEAR 2018 RESULTS

Exhibit 99.1 ONE LIBERTY PROPERTIES REPORTS FOURTH QUARTER AND FULL YEAR 2018 RESULTS GREAT NECK, New York, March 18, 2019 — One Liberty Properties, Inc. (NYSE: OLP), a real estate investment trust focused on net leased properties, today announced operating results for the quarter and year ended December 31, 2018. Patrick J. Callan, Jr., President and Chief Executive Officer of One Liberty stated,

March 18, 2019 8-K

Results of Operations and Financial Condition, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 18, 2019 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction (Commission file No.) (IRS Em

March 18, 2019 EX-21.1

Subsidiaries of the Registrant

QuickLinks - Click here to rapidly navigate through this document Exhibit 21.1 SUBSIDIARIES OF THE COMPANY Company State of Organization OLP Greenwood Village, Colorado, Inc. Colorado OLP 4809 Louisville LLC Delaware OLP 6609 Grand LLC Delaware OLP Air Trans Road TN LLC Delaware OLP Ankeny IA LLC Delaware OLP Ann Arbor LLC Delaware OLP Athens LLC Delaware OLP BD Delray JV LLC Delaware OLP Bakersfi

March 18, 2019 10-K

Form 10-K

Use these links to rapidly review the document TABLE OF CONTENTS PART IV Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.

February 11, 2019 SC 13G/A

OLP / One Liberty Properties, Inc. / VANGUARD GROUP INC Passive Investment

onelibertypropertiesinc.htm - Generated by SEC Publisher for SEC Filing SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 6 )* Name of issuer: One Liberty Properties Inc Title of Class of Securities: REIT CUSIP Number: 682406103 Date of Event Which Requires Filing of this Statement: December 31, 2018 Check the appropria

January 31, 2019 SC 13G/A

OLP / One Liberty Properties, Inc. / VANGUARD SPECIALIZED FUNDS Passive Investment

onelibertypropertiesinc.htm - Generated by SEC Publisher for SEC Filing SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.:5 )* Name of issuer: One Liberty Properties Inc Title of Class of Securities: REIT CUSIP Number: 682406103 Date of Event Which Requires Filing of this Statement: December 31, 2018 Check the appropriat

December 7, 2018 8-K

Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 4, 2018 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction of incorporation) (Commissi

November 8, 2018 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 8, 2018 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction (Commission file No.) (IRS

November 8, 2018 EX-99.1

ONE LIBERTY PROPERTIES REPORTS THIRD QUARTER 2018 RESULTS

Exhibit 99.1 ONE LIBERTY PROPERTIES REPORTS THIRD QUARTER 2018 RESULTS GREAT NECK, New York, November 8, 2018 — One Liberty Properties, Inc. (NYSE: OLP), a real estate investment trust focused on net leased properties, today announced operating results for the quarter ended September 30, 2018. “We continued to execute on our long-term growth strategy by staying disciplined and selectively investin

November 8, 2018 10-Q

OLP / One Liberty Properties, Inc. 10-Q (Quarterly Report)

Table of Contents 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, 2018 OR o Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Commission File Number 001-09279 ONE LIBERTY PROPERTIES, INC.

September 28, 2018 EX-99.1

Investor Presentation OCTOBER 2018 onelibertyproperties.com ◆ 2 TABLE OF CONTENTS DESCRIPTION PAGE Table of Contents 2 Safe Harbor Disclosure 3 Company Overview 4 Experienced Management Team 5 Attractive Portfolio Fundamentals 6 Portfolio Detail 7 Di

EXHIBIT 99.1 Investor Presentation OCTOBER 2018 onelibertyproperties.com ◆ 2 TABLE OF CONTENTS DESCRIPTION PAGE Table of Contents 2 Safe Harbor Disclosure 3 Company Overview 4 Experienced Management Team 5 Attractive Portfolio Fundamentals 6 Portfolio Detail 7 Diversified Portfolio 8 Diversified Tenant Base 9 Financial Summary 10 Targeting Long Term Total Return 11 Growth in Operations 12 - 13 Gro

September 28, 2018 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): September 28, 2018 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction (Commission file No.) (IR

August 6, 2018 EX-10.1

Form of Performance Award Agreement for grants in 2018 pursuant to the 2016 Incentive Plan (incorporated by reference to Exhibit 10.1 to our Quarterly Report on Form 10-Q for the quarter ended June 30, 2018).

EXHIBIT 10.1 FORM OF PERFORMANCE AWARDS AGREEMENT — ONE LIBERTY PROPERTIES, INC. AND THIS AGREEMENT is entered into on July 1, 2018, between One Liberty Properties, Inc., a Maryland corporation (“Company”), and , (“Participant”). WHEREAS, the stockholders of the Company have adopted the One Liberty Properties, Inc. 2016 Incentive Plan (“Plan”); and WHEREAS, the Compensation Committee of the Board

August 6, 2018 10-Q

OLP / One Liberty Properties, Inc. 10-Q (Quarterly Report)

Table of Contents 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, 2018 OR o Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Commission File Number 001-09279 ONE LIBERTY PROPERTIES, INC.

August 6, 2018 8-K

Results of Operations and Financial Condition, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 6, 2018 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other (Commission file No.) (IRS Employer jurisd

August 6, 2018 EX-99.1

ONE LIBERTY PROPERTIES REPORTS SECOND QUARTER 2018 RESULTS – Quarterly Rental Income Grows 6.0% Above Prior Year–

Exhibit 99.1 ONE LIBERTY PROPERTIES REPORTS SECOND QUARTER 2018 RESULTS – Quarterly Rental Income Grows 6.0% Above Prior Year– GREAT NECK, New York, August 6, 2018 — One Liberty Properties, Inc. (NYSE: OLP), a real estate investment trust focused on net leased properties, today announced operating results for the quarter ended June 30, 2018. Patrick J. Callan, Jr., President and Chief Executive Of

June 13, 2018 8-K

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 13, 2018 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction of incorporation) (Commission

June 1, 2018 EX-99.1

Investor Presentation JUNE 2018 onelibertyproperties.com ◆ 2 TABLE OF CONTENTS DESCRIPTION PAGE Table of Contents 2 Safe Harbor Disclosure 3 Company Overview 4 Experienced Management Team 5 Attractive Portfolio Fundamentals 6 Portfolio Detail 7 Diver

Exhibit 99.1 Investor Presentation JUNE 2018 onelibertyproperties.com ◆ 2 TABLE OF CONTENTS DESCRIPTION PAGE Table of Contents 2 Safe Harbor Disclosure 3 Company Overview 4 Experienced Management Team 5 Attractive Portfolio Fundamentals 6 Portfolio Detail 7 Diversified Portfolio 8 Diversified Tenant Base 9 Financial Summary 10 Targeting Long Term Total Return 11 Growth in Operations 12 - 13 Growth

June 1, 2018 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 1, 2018 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction of incorporation) (Commission f

May 7, 2018 10-Q

OLP / One Liberty Properties, Inc. 10-Q (Quarterly Report)

Table of Contents 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, 2018 OR o Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Commission File Number 001-09279 ONE LIBERTY PROPERTIES, INC.

May 3, 2018 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 3, 2018 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction (Commission file No.) (IRS Emplo

May 3, 2018 EX-99.1

ONE LIBERTY PROPERTIES REPORTS FIRST QUARTER 2018 RESULTS – Net Income of $0.30 Per Diluted Share – – Quarterly Rental Income Grows 4.8% over Prior Year– – Quarterly AFFO Per Diluted Share Rises 3.9% over Prior Year to $0.53 –

Exhibit 99.1 ONE LIBERTY PROPERTIES REPORTS FIRST QUARTER 2018 RESULTS – Net Income of $0.30 Per Diluted Share – – Quarterly Rental Income Grows 4.8% over Prior Year– – Quarterly AFFO Per Diluted Share Rises 3.9% over Prior Year to $0.53 – GREAT NECK, New York, May 3, 2018 — One Liberty Properties, Inc. (NYSE: OLP), a real estate investment trust focused on net leased properties, today announced o

April 20, 2018 DEF 14A

OLP / One Liberty Properties, Inc. DEF 14A

TABLE OF CONTENTS 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 ☒ Filed by a Party other than the Registrant  o Check the appropriate box:  o Preliminary Proxy Statement  o Confidential, for Use of the Commission Only (as permitted by Rule

March 14, 2018 EX-21.1

Subsidiaries of the Registrant

QuickLinks - Click here to rapidly navigate through this document Exhibit 21.1 SUBSIDIARIES OF THE COMPANY Company State of Organization OLP Greenwood Village, Colorado, Inc. Colorado OLP 4809 Louisville LLC Delaware OLP 6609 Grand LLC Delaware OLP Air Trans Road TN LLC Delaware OLP Ankeny IA LLC Delaware OLP Ann Arbor LLC Delaware OLP Athens LLC Delaware OLP BD Delray JV LLC Delaware OLP Battlegr

March 14, 2018 10-K

OLP / One Liberty Properties, Inc. 10-K (Annual Report)

Use these links to rapidly review the document TABLE OF CONTENTS Form 10-K PART IV Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.

March 14, 2018 EX-10.7

Form of Restricted Stock Award Agreement for awards granted in 2018 and 2019 pursuant to the 2016 Incentive Plan (incorporated by reference to Exhibit 10.7 of our Annual Report on Form 10-K for the year ended December 31, 2017).

Exhibit 10.7 RESTRICTED STOCK AWARDS AGREEMENT RESTRICTED STOCK AWARDS AGREEMENT, dated as of January 18, 2018, by and between One Liberty Properties, Inc., a Maryland corporation, having its principal place of business at 60 Cutter Mill Road, Great Neck, New York 11021 (the “Company”) and the person named on the signature page of this Agreement (“Holder”). W I T N E S S E T H A. The Board of Dire

March 13, 2018 EX-99.1

ONE LIBERTY PROPERTIES REPORTS FOURTH QUARTER AND FULL YEAR 2017 RESULTS - Company Raises First Quarter 2018 Dividend –

EX-99.1 2 f8k031318ex99-1oneliberty.htm PRESS RELEASE DATED MARCH 13, 2018 Exhibit 99.1 ONE LIBERTY PROPERTIES REPORTS FOURTH QUARTER AND FULL YEAR 2017 RESULTS - Company Raises First Quarter 2018 Dividend – GREAT NECK, New York, March 13, 2018 — One Liberty Properties, Inc. (NYSE: OLP), a real estate investment trust focused on net leased properties, today announced operating results for the quar

March 13, 2018 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 13, 2018 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction (Commission file No.) (IRS Em

February 9, 2018 SC 13G/A

OLP / One Liberty Properties, Inc. / VANGUARD GROUP INC Passive Investment

onelibertypropertiesinc.htm - Generated by SEC Publisher for SEC Filing SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 5 )* Name of issuer: One Liberty Properties Inc Title of Class of Securities: REIT CUSIP Number: 682406103 Date of Event Which Requires Filing of this Statement: December 31, 2017 Check the appropria

February 2, 2018 SC 13G/A

OLP / One Liberty Properties, Inc. / VANGUARD SPECIALIZED FUNDS Passive Investment

onelibertypropertiesinc.htm - Generated by SEC Publisher for SEC Filing SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.:4 )* Name of issuer: One Liberty Properties Inc Title of Class of Securities: REIT CUSIP Number: 682406103 Date of Event Which Requires Filing of this Statement: December 31, 2017 Check the appropriat

January 22, 2018 EX-99.1

INVESTOR PRESENTATION JANUARY 2018 onelibertyproperties.com 2 TABLE OF CONTENTS DESCRIPTION PAGE Table of Contents 2 Safe Harbor Disclosure 3 Company Overview 4 Experienced Management Team 5 Attractive Portfolio Fundamentals 6 Portfolio Detail 7 Dive

Exhibit 99.1 INVESTOR PRESENTATION JANUARY 2018 onelibertyproperties.com 2 TABLE OF CONTENTS DESCRIPTION PAGE Table of Contents 2 Safe Harbor Disclosure 3 Company Overview 4 Experienced Management Team 5 Attractive Portfolio Fundamentals 6 Portfolio Detail 7 Diversified Portfolio 8 Diversified Tenant Base 9 Financial Summary 10 Targeting Long Term Total Return 11 Growth in Operations 12 Growth Ori

January 22, 2018 8-K/A

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K/A 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 22, 2018 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction (Commission file No.) (IR

January 22, 2018 EX-99.1

INVESTOR PRESENTATION JANUARY 2018 onelibertyproperties.com 2 TABLE OF CONTENTS DESCRIPTION PAGE Table of Contents 2 Safe Harbor Disclosure 3 Company Overview 4 Experienced Management Team 5 Attractive Portfolio Fundamentals 6 Portfolio Detail 7 Dive

Exhibit 99.1 INVESTOR PRESENTATION JANUARY 2018 onelibertyproperties.com 2 TABLE OF CONTENTS DESCRIPTION PAGE Table of Contents 2 Safe Harbor Disclosure 3 Company Overview 4 Experienced Management Team 5 Attractive Portfolio Fundamentals 6 Portfolio Detail 7 Diversified Portfolio 8 Diversified Tenant Base 9 Financial Summary 10 Targeting Long Term Total Return 11 Growth in Operations 12 Growth Ori

January 22, 2018 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 7, 2017 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction (Commission file No.) (IRS

November 8, 2017 EX-10.1

Form of Performance Award Agreement for grants in 2017 pursuant to the 2016 Incentive Plan (incorporated by reference to Exhibit 10.1 to our Quarterly Report on Form 10-Q for the quarter ended September 30, 2017).

Exhibit 10.1 FORM OF PERFORMANCE AWARDS AGREEMENT — ONE LIBERTY PROPERTIES, INC. AND THIS AGREEMENT is entered into on September 26, 2017, between One Liberty Properties, Inc., a Maryland corporation (“Company”), and , (“Participant”). WHEREAS, the stockholders of the Company have adopted the One Liberty Properties, Inc. 2016 Incentive Plan (“Plan”); WHEREAS, the Compensation Committee of the Boar

November 8, 2017 10-Q

OLP / One Liberty Properties, Inc. 10-Q (Quarterly Report)

Table of Contents 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, 2017 OR o Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Commission File Number 001-09279 ONE LIBERTY PROPERTIES, INC.

November 7, 2017 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 7, 2017 ONE LIBERTY PROPERTIES, INC. (Exact name of Registrant as specified in charter) Maryland 001-09279 13-3147497 (State or other jurisdiction of incorporation) (Commissi

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