Sec Form 3 Filing - Stewart Christopher P. @ Aeluma, Inc. - 2025-08-04

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 Stewart Christopher P. 2. Issuer Name and Ticker or Trading Symbol Aeluma, Inc. [ ALMU] 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) 27 CASTILIAN DRIVE 3. Date of Earliest Transaction (MM/DD/YY) 08/04/2025 (Street) GOLETA, CA93117 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 Stock Option $ 21.04 ( 1 ) ( 2 ) Common Stock 110,000 D RSU ( 4 ) $ 21.04 ( 3 ) ( 3 ) Common Stock 55,000 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Stewart Christopher P. 27 CASTILIAN DRIVE GOLETA, CA93117 Chief Financial Officer Signatures /s/ Christopher Stewart 08/13/2025 Signature of Reporting Person Date

Explanation of Responses:

( 1 )25% of the stock options (the "Options") will vest on the twelve (12) month anniversary of the Reporting Persons employment with the Company. The balance of the Options will vest in equal monthly increments, on each monthly anniversary of the Reporting Persons employment start date with the Company, over the next thirty-six (36) months. ( 2 )The Options expire on the 10-year anniversary of the Options vesting date. ( 3 )25% of the RSU shares will vest at the end of the fiscal quarter following the twelve (12) month anniversary of the Reporting Persons employment start date with the Company, with a pro-rated amount for any partial quarter preceding the twelve (12) month anniversary. The balance of the RSUs will vest in equal quarterly increments, with a pro-rated amount for any partial final quarter. ( 4 )Each restricted stock unit represents the contingent right to receive, at settlement, one share 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).

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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