Aeluma CEO Jonathan Klamkin sells 100,000 shares

The sale was made under a Rule 10b5-1 plan adopted May 23, 2026, and the report lists 1,126,995 shares held indirectly afterward.

Rhea-AI Filing Summary

Aeluma, Inc. Chief Executive Officer and director Jonathan Klamkin reported an indirect sale of 100,000 common shares held by a Family Trust on October 12, 2026, at a weighted average price of $10.5343 per share; individual sale prices ranged from $10.31 to $11.15. The sale was made under a Rule 10b5-1 trading plan adopted May 23, 2026. After the transaction, reported holdings were 1,126,995 shares through the Family Trust and 42,302 shares directly.

Insider Trade Summary 10b5-1

Net Seller: 100,000 shares

Net Sell 2 txns

Insider Klamkin Jonathan

Role Chief Executive Officer

Sold 100,000 shs ($1.05M)

Type	Security	Shares	Price	Value
Sale	Common Stock F1, F2	100,000	$10.5343	$1.05M
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 1,126,995 shares (Indirect, By Family Trust); Common Stock — 42,302 shares (Direct)

Footnotes (2)

1. F1. Sales effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 23, 2026.
2. F2. Reflects the weighted average price of 100,000 shares of common stock of Aeluma, Inc. sold by the reporting person in multiple transactions on October 12, 2026 with sale prices ranging from $10.31 to $11.15 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.

Key Figures

Shares sold: 100,000 shares Weighted average sale price: $10.5343 per share Sale price range: $10.31–$11.15 per share +2 more

5 metrics

Shares sold 100,000 shares October 12, 2026; held indirectly through a Family Trust

Weighted average sale price $10.5343 per share Sale on October 12, 2026

Sale price range $10.31–$11.15 per share Prices across multiple transactions on October 12, 2026

Indirect shares held after transaction 1,126,995 shares Held through a Family Trust

Direct shares held after transaction 42,302 shares Reported after the October 12, 2026 transaction

Key Terms

Rule 10b5-1 trading plan, weighted average price

2 terms

Rule 10b5-1 trading plan regulatory

"Sales effected pursuant to a Rule 10b5-1 trading plan"

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

weighted average price financial

"Reflects the weighted average price of 100,000 shares"

Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

How many ALMU shares did CEO Jonathan Klamkin sell, and at what price?

Aeluma Chief Executive Officer and director Jonathan Klamkin reported an indirect sale of 100,000 common shares held by a Family Trust on October 12, 2026. The weighted average price was $10.5343 per share, with individual sale prices ranging from $10.31 to $11.15. The sale was made pursuant to a Rule 10b5-1 trading plan adopted May 23, 2026.

How many ALMU shares were held after the sale?

The reported post-transaction positions were 1,126,995 shares held indirectly through a Family Trust and 42,302 shares held directly.

AI-generated analysis. How Rhea-AI works. Not financial advice.

Form 4 Insider Transactions: What Each Field Means →

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Available on EDGAR 10/14/2026 - 04:08 PM EDT Accepted by SEC EDGAR 10/14/2026 - 04:08 PM EDT Learn about SEC filing dates

SEC Form 4

FORM 4

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
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).

X

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^*

Klamkin Jonathan

(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)

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Executive Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
10/12/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form 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)
			Code	V	Amount	(A) or (D)	Price
Common Stock	10/12/2026		S(1)		100,000	D	$10.5343(2)	1,126,995	I	By Family Trust
Common Stock								42,302	D

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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Sales effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 23, 2026.

2. Reflects the weighted average price of 100,000 shares of common stock of Aeluma, Inc. sold by the reporting person in multiple transactions on October 12, 2026 with sale prices ranging from $10.31 to $11.15 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.

	/s/ Joshua L. Colburn, Attorney-in-Fact	10/14/2026
	** Signature of Reporting Person	Date
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)