Sec Form 4 Filing - TURMELLE MICHAEL C @ Quantum Computing Inc. - 2025-06-03

FORM 4 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 TURMELLE MICHAEL C 2. Issuer Name and Ticker or Trading Symbol Quantum Computing Inc. [ QUBT] 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) 5 MARINE VIEW PLZ, #214 3. Date of Earliest Transaction (MM/DD/YY) 06/03/2025 (Street) HOBOKEN, NJ07030 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 Common Stock 06/03/2025 M 80,246 ( 1 ) A $ 2.4 80,246 ( 2 ) D Common Stock 06/03/2025 M 120,740 A $ 2.37 120,740 ( 2 ) D Common Stock 06/09/2025 S 200,986 D $ 14.18 0 ( 2 ) 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 Options to Purchase Shares of Common Stock $ 2.4 06/03/2025 D 80,246 ( 1 ) 01/24/2027 Common Stock 80,246 $ 0 0 D Options to Purchase Shares of Common Stock $ 2.37 06/03/2025 D 120,740 ( 1 ) 10/17/2027 Common Stock 120,740 $ 0 0 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other TURMELLE MICHAEL C 5 MARINE VIEW PLZ #214 HOBOKEN, NJ07030 X Signatures /s/ Michael Turmelle 06/11/2025 Signature of Reporting Person Date

Explanation of Responses:

( 1 )These shares were acquired by the Reporting Person on June 3, 2025 by exercising (i) the stock options to purchase 100,000 shares of the Company's common stock, par value $0.0001 per share ("Common Stock"), granted on January 24, 2022 and (ii) stock options to purchase 150,000 shares of Common Stock granted on October 17, 2022, all of which were vested, using a "net exercise" method at a cashless exercise price of $12.15 per share, resulting in the issuance of 200,986 shares of Common Stock. ( 2 )The total number of shares of Common Stock beneficially owned directly by the Reporting Person does not include 400,000 shares of Common Stock issuable upon exercise of vested options to purchase shares of common stock.

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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