X0306 4 2020-01-28 0 0000791963 OPPENHEIMER HOLDINGS INC OPY 0001594628 Lowenthal Robert S 85 BROAD STREET NEW YORK NY 10004 1 0 0 0 Class A non-voting common stock 2020-01-28 4 J 0 5883 A 53543 D Class A non-voting common stock 174000 I Beneficiary R.S. Lowenthal Trust Class A non-voting common stock 150000 I Beneficiary A.R. Lowenthal Trust Class A non-voting common stock 303357 I Beneficiary Phase II Financial LP Class B voting common stock 650 D Restricted Class A non-voting common stock 2020-01-28 4 J 0 9524 D Class A non-voting common stock 5883 38868 D The transaction describes the vesting of 9,524 shares of Restricted Class A non-voting common stock which were awarded on January 29, 2015 of which 5,883 Class A non-voting common shares were converted and 3,641 shares were forfeited. /s/ Jenny Chan, as Attorney-in-fact for Robert S. Lowenthal 2020-01-29