Christopher P. Stewart - 21 Sep 2026 Form 4 Insider Report for Aeluma, Inc. (ALMU)

Reporting relationship: Chief Financial Officer
Issuer ticker: ALMU
Reported as of: 21 Sep 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 23 Sep 2026, 19:18:19 UTC
Prior SEC filing: 13 Aug 2025
Next SEC filing: 01 Oct 2026
Source filing: View source filing
Reporting owner signature: /s/ Joshua L. Colburn, Attorney-in-Fact

Key filing fact

Christopher P. Stewart filed Form 4 for Aeluma, Inc. (ALMU) on 23 Sep 2026.

Key facts

This page summarizes Christopher P. Stewart's Form 4 filing for Aeluma, Inc. (ALMU).
4 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 23 Sep 2026, 19:18.

Change

Previous filing in this sequence was filed on 13 Aug 2025.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001822991 Primary reporting owner

Stewart Christopher P.

Relationship: Chief Financial Officer
Address: 27 CASTILIAN DRIVE, GOLETA
Signature: /s/ Joshua L. Colburn, Attorney-in-Fact
Signature date: 23 Sep 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

ALMU transaction

Common Stock

Award

Transaction value
Shares: +15,886
Change %
Price: $0.000000^*
Shares after: 15,886
Date: 21 Sep 2026
Ownership: Direct
Footnotes: F1

ALMU transaction

Common Stock

Award

Transaction value
Shares: +4,042
Change %: +25%
Price: $0.000000^*
Shares after: 19,928
Date: 21 Sep 2026
Ownership: Direct
Footnotes: F2

ALMU transaction

Common Stock

Tax liability

Transaction value
Shares: -1,450
Change %: -7.3%
Price: $13.61^*
Shares after: 18,478
Date: 21 Sep 2026
Ownership: Direct

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

ALMU transaction Derivative

Stock Option (right to buy)

Award

Transaction value
Shares: +37,568
Change %
Price: $0.000000^*
Shares after: 37,568
Date: 21 Sep 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 37,568
Exercise price: $13.61
Footnotes: F3

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 3 footnotes

Footnote F1

Restricted stock units ("RSUs") scheduled to vest and settle into an equal number of shares of common stock with respect to 25% of the shares on September 30, 2027 and thereafter in 12 substantially equivalent quarterly increments on the last day of each calendar quarter.

Footnote F2

Stock award in lieu of cash bonus.

Footnote F3

Stock options scheduled to vest with respect to 25% of the shares on first anniversary of the grant date, and thereafter in 36 substantially equivalent increments on each monthly anniversary of the grant date.

SEC remarks

Exhibit List: Exhibit 24-Power of Attorney