X0306 4 2020-08-03 0000712770 ONE LIBERTY PROPERTIES INC OLP 0001545196 Kalish Isaac 60 CUTTER MILL ROAD SUITE 303 GREAT NECK NY 11021 false true false false VP and Assistant Treasurer Common Stock 2020-08-03 4 A false 1237 0 A 42551 D Common Stock 18852 I By Gould Investors L.P. pension trust Common Stock 150354 I By REIT Mgt. Corp. pension and profit sharing trusts Common Stock 4044 I By BRT Apartments Corp. Pension Trust Common Stock 4794 I As custodian for children pursuant to UGMA Represents shares underlying (the "Underlying Shares") restricted stock units ("RSUs") that vested upon satisfaction of the applicable market conditions. The RSUs were granted in 2017 pursuant to the 2016 Incentive Plan. The measurement date for determining whether the Underlying Shares vested was June 30,2020; the issuance of the Underlying Shares was subject to the approval of the compensation committee, which approved the issuance on the Transaction Date. Reporting person is a trustee of Gould Investors L.P. Pension Trust. Reporting person is a trustee of each of the REIT Management Corp. Pension Plan and the REIT Management Corp. 401(k) Tax Deferred Savings Plan Profit Sharing Trust, which in the aggregate own the number of shares shown. Reporting person is a trustee of BRT Apartments Corp. Pension Trust, which owns these shares. /s/ Isaac Kalish by David Kalish, his attorney in fact 2020-08-03