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  4. [Form 4] Aeluma, Inc. Insider Trading Activity

Aeluma director sells 25,000 shares in market

Aeluma, Inc. (ALMU) director Steven Denbaars reported two open-market sales of common stock.

Filing Impact
(Moderate)
Filing Sentiment
(Negative)
Form Type
4

Rhea-AI Filing Summary

Aeluma, Inc. (ALMU) director Steven Denbaars reported two open-market sales of common stock. He sold 12,500 shares on August 26, 2026 at a weighted average price of $13.8435 per share and 12,500 shares on August 27, 2026 at a weighted average price of $13.8158, in multiple trades within the disclosed price ranges.

Positive

  • None.

Negative

  • None.
Insider Denbaars Steven
Role Director
Sold 25,000 shs ($346K)
Type Security Shares Price Value
Sale Common Stock F2 12,500 $13.8158 $173K
Sale Common Stock F1 12,500 $13.8435 $173K
Holdings After Transaction: Common Stock — 345,209 shares (Direct)
Footnotes (2)
  1. F1. The price reported in Column 4 represents a weighted average sales price. These shares were sold in multiple transactions at prices ranging from $13.57 to $14.40, inclusive.
  2. F2. The price reported in Column 4 represents a weighted average sales price. These shares were sold in multiple transactions at prices ranging from $13.59 to $14.35, inclusive.
Shares sold on 2026-08-26 12,500 shares of Common Stock Open-market sale by director Steven Denbaars on August 26, 2026
Weighted average price on 2026-08-26 $13.8435 per share Multiple transactions at prices from $13.57 to $14.40, inclusive
Shares sold on 2026-08-27 12,500 shares of Common Stock Open-market sale by director Steven Denbaars on August 27, 2026
Weighted average price on 2026-08-27 $13.8158 per share Multiple transactions at prices from $13.59 to $14.35, inclusive
Total shares sold 25,000 shares of Common Stock Sum of reported sales on August 26 and 27, 2026
weighted average sales price financial
"The price reported in Column 4 represents a weighted average sales price."
open market or private transaction financial
"Transaction code "S" described as Sale in open market or private transaction"
beneficially owned financial
"This filing does not state the number of shares beneficially owned after these sales"
Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.

FAQ

What insider transaction did Aeluma, Inc. (ALMU) report on this Form 4?
The filing reports that director Steven Denbaars sold a total of 25,000 shares of Aeluma, Inc. common stock in open-market transactions on August 26 and 27, 2026.

How many Aeluma (ALMU) shares did Steven Denbaars sell on each date?
Steven Denbaars sold 12,500 shares of Aeluma common stock on August 26, 2026 and 12,500 shares on August 27, 2026, for a combined total of 25,000 shares sold.

What were the sale prices for Steven Denbaars’ Aeluma (ALMU) stock transactions?
On August 26, 2026, the weighted average sales price was $13.8435 per share, with trades from $13.57 to $14.40. On August 27, 2026, the weighted average sales price was $13.8158, with trades from $13.59 to $14.35.

Were the Aeluma (ALMU) insider sales by Steven Denbaars under a Rule 10b5-1 plan?
The Form 4 indicates the Rule 10b5-1 checkbox is not checked, and the footnotes do not state that the transactions were made pursuant to a Rule 10b5-1 trading plan.

Does the Form 4 state how many Aeluma (ALMU) shares Steven Denbaars owns after these sales?
The non-derivative transaction rows show the post-transaction share holdings as null, so this filing does not state the number of Aeluma shares beneficially owned by Steven Denbaars after these sales.

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SEC Form 4
FORM 4UNITED 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
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
Denbaars Steven
(Last)(First)(Middle)
27 CASTILIAN DRIVE
(Street)
GOLETA CALIFORNIA 93117
(City)(State)(Zip)
UNITED STATES
(Country)		2. Issuer Name and Ticker or Trading Symbol
Aeluma, Inc. [ ALMU ] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
XDirector10% Owner
Officer (give title below)Other (specify below)
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
08/26/2026		6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)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)
CodeVAmount(A) or (D)Price
Common Stock08/26/2026S12,500D$13.8435(1)357,709D
Common Stock08/27/2026S12,500D$13.8158(2)345,209D
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 (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)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 (Month/Day/Year)7. Title and Amount of Securities Underlying Derivative Security (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: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Explanation of Responses:
1. The price reported in Column 4 represents a weighted average sales price. These shares were sold in multiple transactions at prices ranging from $13.57 to $14.40, inclusive.
2. The price reported in Column 4 represents a weighted average sales price. These shares were sold in multiple transactions at prices ranging from $13.59 to $14.35, inclusive.
/s/ Joshua L. Colburn, Attorney-in-Fact08/28/2026
** Signature of Reporting PersonDate
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.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

Source: View Original Filing on SEC EDGAR