Sec Form 3 Filing - Carter Charles Ross @ CERO THERAPEUTICS HOLDINGS, INC. - 2024-02-14

FORM 3 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 Carter Charles Ross 2. Issuer Name and Ticker or Trading Symbol CERO THERAPEUTICS HOLDINGS, INC. [ CERO] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) Chief Financial Officer (Last) (First) (Middle) CERO THERAPEUTICS HOLDINGS, INC., 201 HASKINS WAY, SUITE 230 3. Date of Earliest Transaction (MM/DD/YY) 02/14/2024 (Street) SOUTH SAN FRANCISCO, CA94080 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

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 Series A Convertible Preferred Stock $ 10 ( 1 ) 02/14/2024 ( 1 ) Common Stock 5,000 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Carter Charles Ross CERO THERAPEUTICS HOLDINGS, INC. 201 HASKINS WAY, SUITE 230 SOUTH SAN FRANCISCO, CA94080 Chief Financial Officer Signatures /s/ Charles Carter 02/16/2024 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Each share of Series A Convertible Preferred Stock (the "Series A Preferred Stock") has a stated value of $1,000 and, at the option of the holder, is convertible into a number of shares of Common Stock determined by dividing (x) the value of the shares of Series A Preferred Stock, plus any additional amounts thereon as of such date of determination, by (y) the conversion price, which is currently $10.00, subject to adjustments. The Series A Preferred Stock has no expiration date.

Remarks: Exhibit 24 - Power of Attorney. Effective immediately after the Effective Time as defined in that certain Business Combination Agreement dated as of June 4, 2023, as amended, by and among the Issuer (f/k/a Phoenix Biotech Acquisition Corp.), CERo Therapeutics, Inc. and PBCE Merger Sub, Inc., the reporting person became an executive officer of the Issuer.

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).

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
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