Sec Form 4 Filing - Blend L Michael @ System1, Inc. - 2023-11-22

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 Blend L Michael 2. Issuer Name and Ticker or Trading Symbol System1, Inc. [ SST] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) CEO & Chairman (Last) (First) (Middle) C/O SYSTEM1, INC. 4235 REDWOOD AVENUE 3. Date of Earliest Transaction (MM/DD/YY) 11/22/2023 (Street) MARINA DEL REY, CA90066 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 Common Stock 11/22/2023 J( 1 ) 1,000,000 A $ 0 1,725,000 D Class A Common Stock 11/22/2023 J( 1 ) 1,000,000 D $ 0 725,000 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 Blend L Michael C/O SYSTEM1, INC. 4235 REDWOOD AVENUE MARINA DEL REY, CA90066 X CEO & Chairman Signatures /s/ Daniel Weinrot, Attorney-in-Fact for Michael Blend 12/18/2023 Signature of Reporting Person Date

Explanation of Responses:

( 1 )The Lone Star Friends Trust made a deemed distribution of 1,000,000 shares of Class C common stock (and 1,000,000 corresponding Class B Units of S1 Holdco LLC) to its beneficiaries (which included Mr. Michael Blend, the Issuer's co-founder and CEO, and his spouse). The beneficiaries of the Lone Star Friends Trust immediately made a gift of 500,000 shares of Class C common stock (and 500,000 corresponding Class B Units of S1 Holdco, LLC) to each of the Dante Jacob Blend Trust and the Nola Deflina Blend Trust (which are trusts established for the benefit of the beneficiaries children). The Reporting Person is the Trustee of each of the Lone Star Friends Trust, the Dante Jacob Blend Trust and the Nola Delfina Blend Trust.

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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