Sec Form 3 Filing - Zulla Caitlin @ Lumexa Imaging Holdings, Inc. - 2025-12-11

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 Zulla Caitlin 2. Issuer Name and Ticker or Trading Symbol Lumexa Imaging Holdings, Inc. [ LMRI] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) Chief Executive Officer (Last) (First) (Middle) 4200 SIX FORKS ROAD, SUITE 1000 3. Date of Earliest Transaction (MM/DD/YY) 12/11/2025 (Street) RALEIGH, NC27609 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 Common Units of Holdings LLC ( 1 ) ( 1 ) ( 1 ) ( 1 ) Common Stock 14,948 D Stock Option (right to buy) $ 18.5 ( 2 ) 12/10/2035 Common Stock 833,333 D Stock Option (right to buy) $ 18.5 ( 3 ) 12/10/2035 Common Stock 833,333 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Zulla Caitlin 4200 SIX FORKS ROAD SUITE 1000 RALEIGH, NC27609 X Chief Executive Officer Signatures /s/ Julie Szeker, attorney-in-fact 12/11/2025 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Represents common units ("Common Units") of Lumexa Imaging Equity Holdco, LLC ("Holdings LLC") held by the Reporting Person. Each nine Common Units represent the right to acquire one share of the Issuer's common stock ("Common Stock") held by Holdings LLC. After the closing of the Issuer's initial public offering ("IPO"), Holdings LLC may distribute all or a portion of the shares of the Common Stock it holds to its remaining equity holders on a pro rata basis, not earlier than the expiration of a 180-day lock-up period (a "Distribution"). Accordingly, the shares of Common Stock reported on this row represent shares of Common Stock that the Reporting Person is entitled to receive in connection with a Distribution in exchange for their Common Units. ( 2 )The shares of Common Stock subject to the stock option vest annually in five substantially equal installments from the vesting commencement date of January 1, 2025, subject to the Reporting Person's continued service with the Issuer. ( 3 )The shares of Common Stock subject to the stock option will vest in three substantially equal installments upon the attainment of three prescribed stock price targets of $27.00, $36.00 and $45.00 per share, which targets are measured based on the volume weighted average closing price per share of Common Stock over any consecutive sixty (60) trading day period, with the measurement period commencing on the first business day immediately following the expiration of the 180-day lock-up period, subject to the Reporting Person's continued service with the Issuer.

Remarks: Exhibit List: Exhibit 24 - Power of Attorney

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).

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