Jonathan Klamkin - 01 Jun 2026 Form 4 Insider Report for Aeluma, Inc. (ALMU)

Reporting relationship: Chief Executive Officer, Director
Issuer ticker: ALMU
Reported as of: 01 Jun 2026
Net transaction value: -$500,661
SEC form: 4
Accepted by SEC: 03 Jun 2026, 17:09:51 UTC
Prior SEC filing: 03 Apr 2026
Source filing: View source filing
Reporting owner signature: /s/ Joshua L. Colburn, Attorney-in-Fact

Key filing fact

Jonathan Klamkin filed Form 4 for Aeluma, Inc. (ALMU) on 03 Jun 2026.

Key facts

This page summarizes Jonathan Klamkin's Form 4 filing for Aeluma, Inc. (ALMU).
7 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 03 Jun 2026, 17:09.

Change

Previous filing in this sequence was filed on 03 Apr 2026.
Current net transaction value: -$500,661.

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 0001869626 Primary reporting owner

Klamkin Jonathan

Relationship: Chief Executive Officer, Director
Address: 27 CASTILIAN DRIVE, GOLETA
Signature: /s/ Joshua L. Colburn, Attorney-in-Fact
Signature date: 03 Jun 2026

Reported non-derivative transactions

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

ALMU transaction

Common Stock

Gift

Transaction value
Shares: -20,000
Change %: -1.4%
Price: $0.000000^*
Shares after: 1,366,995
Date: 01 Jun 2026
Ownership: By Family Trust

ALMU transaction

Common Stock

Gift

Transaction value
Shares: +20,000
Change %: +832%
Price: $0.000000^*
Shares after: 22,403
Date: 01 Jun 2026
Ownership: Direct

ALMU transaction

Common Stock

Sale

Transaction value: $19,968
Shares: -900
Change %: -4%
Price: $22.19
Shares after: 21,503
Date: 01 Jun 2026
Ownership: Direct
Footnotes: F1, F2

ALMU transaction

Common Stock

Sale

Transaction value: $32,649
Shares: -1,400
Change %: -6.5%
Price: $23.32
Shares after: 20,103
Date: 01 Jun 2026
Ownership: Direct
Footnotes: F1, F3

ALMU transaction

Common Stock

Sale

Transaction value: $192,642
Shares: -7,900
Change %: -39%
Price: $24.39
Shares after: 12,203
Date: 01 Jun 2026
Ownership: Direct
Footnotes: F1, F4

ALMU transaction

Common Stock

Sale

Transaction value: $40,190
Shares: -1,600
Change %: -13%
Price: $25.12
Shares after: 10,603
Date: 01 Jun 2026
Ownership: Direct
Footnotes: F1, F5

ALMU transaction

Common Stock

Sale

Transaction value: $215,211
Shares: -8,200
Change %: -77%
Price: $26.25
Shares after: 2,403
Date: 01 Jun 2026
Ownership: Direct
Footnotes: F1, F6

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

Additional SEC filing notes

Filing notes and footnotes

Rule 10b5-1 trading plan

These transactions were reported as open-market trades under a Rule 10b5-1 plan. The plan lets an insider set trading instructions in advance, which can reduce the risk of trading while in possession of material nonpublic information.

Original filing language: transaction made pursuant to a contract, instruction, or written plan intended to satisfy Rule 10b5-1(c).

Explanation of responses 6 footnotes

Footnote F1

Sales effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 3, 2025.

Footnote F2

Reflects the weighted average price of 900 shares of common stock of Aeluma, Inc. sold by the reporting person in multiple transactions on June 1, 2026 with sale prices ranging from $21.64 to $22.62 per share. The reporting person undertakes to provide upon request by the U.S. Securities and Exchange Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.

Footnote F3

Reflects the weighted average price of 1,400 shares of common stock of Aeluma, Inc. sold by the reporting person in multiple transactions on June 1, 2026 with sale prices ranging from $22.74 to $23.70 per share. The reporting person undertakes to provide upon request by the U.S. Securities and Exchange Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.

Footnote F4

Reflects the weighted average price of 7,900 shares of common stock of Aeluma, Inc. sold by the reporting person in multiple transactions on June 1, 2026 with sale prices ranging from $23.75 to $24.74 per share. The reporting person undertakes to provide upon request by the U.S. Securities and Exchange Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.

Footnote F5

Reflects the weighted average price of 1,600 shares of common stock of Aeluma, Inc. sold by the reporting person in multiple transactions on June 1, 2026 with sale prices ranging from $24.76 to $25.73 per share. The reporting person undertakes to provide upon request by the U.S. Securities and Exchange Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.

Footnote F6

Reflects the weighted average price of 8,200 shares of common stock of Aeluma, Inc. sold by the reporting person in multiple transactions on June 1, 2026 with sale prices ranging from $25.79 to $26.71 per share. The reporting person undertakes to provide upon request by the U.S. Securities and Exchange Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.