Sec Form 5 Filing - Lowenthal Robert S @ OPPENHEIMER HOLDINGS INC - 2020-12-31

FORM 5 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person Lowenthal Robert S 2. Issuer Name and Ticker or Trading Symbol OPPENHEIMER HOLDINGS INC [ OPY] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) 85 BROAD STREET 3. Date of Earliest Transaction (MM/DD/YY) 12/31/2020 (Street) NEW YORK, NY10004 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Class A non-voting common stock 02/28/2020 P( 1 ) V 18.59 A $ 24.03 3,740 I Held in the Oppenheimer & Co. Inc. 401k Plan Class A non-voting common stock 05/29/2020 P( 1 ) V 21.27 A $ 21.1 3,761 I Held in the Oppenheimer & Co. Inc. 401k Plan Class A non-voting common stock 08/27/2020 P( 1 ) V 17.89 A $ 25.23 3,779 I Held in the Oppenheimer & Co. Inc. 401k Plan Class A non-voting common stock 12/04/2020 P( 1 ) V 15.39 A $ 29.46 3,795 I Held in the Oppenheimer & Co. Inc. 401k Plan Class A non-voting common stock 12/30/2020 P( 1 ) V 120.74 A $ 31.43 3,915 I Held in the Oppenheimer & Co. Inc. 401k Plan Class A non-voting common stock 55,882 D Class A non-voting common stock 174,000 I Beneficiary R.S. Lowenthal Trust Class A non-voting common stock 150,000 I Beneficiary A.R. Lowenthal Trust Class A non-voting common stock 303,357 I Beneficiary Phase II Financial LP Class B voting common stock 650 D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Lowenthal Robert S 85 BROAD STREET NEW YORK, NY10004 X Signatures /s/ Jenny Chan, as Attorney-in-fact for Robert S Lowenthal 02/09/2021 Signature of Reporting Person Date

Explanation of Responses:

( 1 )The transaction describes an automatic dividend reinvestment program in the Reporting Owner's Oppenheimer & Co. Inc. 401k Plan.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

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