Aeluma, Inc. Insider Trading

ALMU

Last 12 months

Insiders sold $6.92M and bought nothing on the open market.

95% of the selling was scheduled in advance under 10b5-1 plans. The last open-market buy by an executive or director was in Jun 2021.

Net open-market

−$6.92M

0 buys · 12 sales

Under a 10b5-1 plan

95%

of the value sold

Insiders who bought / sold

0 / 2

executives and directors

Last open-market buy

Jun 2021

Jun 22, 2021

Get an email when ALMU's executives or directors buy, or make a large sale outside a plan.

Trades · last 2 years

Date	Insider	Trade	Shares	Price	Value	Of their stake	Filing
Oct 12	Jonathan Klamkin Chief Executive Officer	Sold10b5-1 plan	100,000	$10.53	$1.05M	7.9%	Form 4
Sep 21	Jonathan Klamkin Chief Executive Officer	Sold10b5-1 plan	100,000	$13.35	$1.33M	7.3%	Form 4
Aug 26 – 27	Steven Denbaars Director	SoldNo plan 2 parts	25,000	$13.83 average	346K	6.8%	Form 4
Aug 26 – 27	Steven Denbaars Director	Sold10b5-1 plan 2 parts	25,000	$13.83 average	346K	6.8%	Form 4
Aug 3	Jonathan Klamkin Chief Executive Officer	Sold10b5-1 plan 2 parts	20,000	$16.73 average	335K	1.5%	Form 4
Jul 1	Jonathan Klamkin Chief Executive Officer	Sold10b5-1 plan 2 parts	20,000	$21.08 average	422K	1.5%	Form 4
Jun 1	Jonathan Klamkin Chief Executive Officer	Sold10b5-1 plan 5 parts	20,000	$25.04 average	501K	1.4%	Form 4
May 19 – 20	Steven Denbaars Director	Sold10b5-1 plan 4 parts	25,000	$20.23 average	506K	6.3%	Form 4
May 1	Jonathan Klamkin Chief Executive Officer	Sold10b5-1 plan 3 parts	20,000	$24.96 average	499K	1.4%	Form 4
Apr 1	Jonathan Klamkin Chief Executive Officer	Sold10b5-1 plan	20,000	$13.10	262K	1.4%	Form 4
Mar 4	Jonathan Klamkin Chief Executive Officer	Sold10b5-1 plan 2 parts	50,000	$18.05 average	902K	3.4%	Form 4
Feb 25 – 26	Steven Denbaars Director	Sold10b5-1 plan 2 parts	25,000	$16.72 average	418K	6.1%	Form 4
Feb 4	Mark N. Tompkins Other	SoldNo plan 2 parts	34,500	$14.71 average	508K	1.9%	Form 4
Jan 29 – Feb 2	Mark N. Tompkins Large holder	SoldNo plan 5 parts	95,000	$16.15 average	$1.53M	4.9%	Form 4
Jan 20 – 22	Mark N. Tompkins Large holder	SoldNo plan 8 parts	105,000	$19.14 average	$2.01M	5.2%	Form 4
Dec 23, 2025 – Dec 26, 2025	Mark N. Tompkins Large holder	SoldNo plan 5 parts	60,000	$16.62 average	997K	2.9%	Form 4
Dec 18, 2025 – Dec 22, 2025	Mark N. Tompkins Large holder	SoldNo plan 3 parts	85,000	$14.68 average	$1.25M	3.9%	Form 4
Dec 9, 2025 – Dec 10, 2025	Mark N. Tompkins Large holder	SoldNo plan 3 parts	50,000	$17.09 average	854K	2.3%	Form 4
Dec 4, 2025 – Dec 8, 2025	Mark N. Tompkins Large holder	SoldNo plan 6 parts	100,000	$16.08 average	$1.61M	4.3%	Form 4
Oct 17, 2025 – Oct 20, 2025	Mark N. Tompkins Large holder	SoldNo plan 4 parts	77,500	$16.67 average	$1.29M	3.2%	Form 4
Oct 15, 2025 – Oct 16, 2025	Mark N. Tompkins Large holder	SoldNo plan 5 parts	65,000	$20.09 average	$1.31M	2.6%	Form 4
Oct 10, 2025 – Oct 14, 2025	Mark N. Tompkins Large holder	SoldNo plan 5 parts	107,186	$17.87 average	$1.92M	4.2%	Form 4
Oct 7, 2025 – Oct 9, 2025	Mark N. Tompkins Large holder	SoldNo plan 7 parts	106,908	$17.25 average	$1.84M	4.0%	Form 4
Oct 2, 2025 – Oct 6, 2025	Mark N. Tompkins Large holder	SoldNo plan 5 parts	129,751	$18.00 average	$2.34M	4.6%	Form 4
Sep 30, 2025	Mark N. Tompkins Large holder	SoldNo plan	33,800	$16.18	547K	1.2%	Form 4
Aug 14, 2025	Jonathan Klamkin Chief Executive Officer	Sold10b5-1 plan	150,000	$18.85	$2.83M	9.2%	Form 4

Oct 1210b5-1 plan
Jonathan Klamkin
Chief Executive Officer · sold 100,000 at $10.53
$1.05M
7.9% of stake
Sep 2110b5-1 plan
Jonathan Klamkin
Chief Executive Officer · sold 100,000 at $13.35
$1.33M
7.3% of stake
Aug 26 – 27No plan
Steven Denbaars
Director · sold 25,000 at avg $13.83
346K
6.8% of stake
Aug 26 – 2710b5-1 plan
Steven Denbaars
Director · sold 25,000 at avg $13.83
346K
6.8% of stake
Aug 310b5-1 plan
Jonathan Klamkin
Chief Executive Officer · sold 20,000 at avg $16.73
335K
1.5% of stake
Jul 110b5-1 plan
Jonathan Klamkin
Chief Executive Officer · sold 20,000 at avg $21.08
422K
1.5% of stake
Jun 110b5-1 plan
Jonathan Klamkin
Chief Executive Officer · sold 20,000 at avg $25.04
501K
1.4% of stake
May 19 – 2010b5-1 plan
Steven Denbaars
Director · sold 25,000 at avg $20.23
506K
6.3% of stake
May 110b5-1 plan
Jonathan Klamkin
Chief Executive Officer · sold 20,000 at avg $24.96
499K
1.4% of stake
Apr 110b5-1 plan
Jonathan Klamkin
Chief Executive Officer · sold 20,000 at $13.10
262K
1.4% of stake
Mar 410b5-1 plan
Jonathan Klamkin
Chief Executive Officer · sold 50,000 at avg $18.05
902K
3.4% of stake
Feb 25 – 2610b5-1 plan
Steven Denbaars
Director · sold 25,000 at avg $16.72
418K
6.1% of stake
Feb 4No plan
Mark N. Tompkins
Other · sold 34,500 at avg $14.71
508K
1.9% of stake
Jan 29 – Feb 2No plan
Mark N. Tompkins
Large holder · sold 95,000 at avg $16.15
$1.53M
4.9% of stake
Jan 20 – 22No plan
Mark N. Tompkins
Large holder · sold 105,000 at avg $19.14
$2.01M
5.2% of stake
Dec 23, 2025 – Dec 26, 2025No plan
Mark N. Tompkins
Large holder · sold 60,000 at avg $16.62
997K
2.9% of stake
Dec 18, 2025 – Dec 22, 2025No plan
Mark N. Tompkins
Large holder · sold 85,000 at avg $14.68
$1.25M
3.9% of stake
Dec 9, 2025 – Dec 10, 2025No plan
Mark N. Tompkins
Large holder · sold 50,000 at avg $17.09
854K
2.3% of stake
Dec 4, 2025 – Dec 8, 2025No plan
Mark N. Tompkins
Large holder · sold 100,000 at avg $16.08
$1.61M
4.3% of stake
Oct 17, 2025 – Oct 20, 2025No plan
Mark N. Tompkins
Large holder · sold 77,500 at avg $16.67
$1.29M
3.2% of stake
Oct 15, 2025 – Oct 16, 2025No plan
Mark N. Tompkins
Large holder · sold 65,000 at avg $20.09
$1.31M
2.6% of stake
Oct 10, 2025 – Oct 14, 2025No plan
Mark N. Tompkins
Large holder · sold 107,186 at avg $17.87
$1.92M
4.2% of stake
Oct 7, 2025 – Oct 9, 2025No plan
Mark N. Tompkins
Large holder · sold 106,908 at avg $17.25
$1.84M
4.0% of stake
Oct 2, 2025 – Oct 6, 2025No plan
Mark N. Tompkins
Large holder · sold 129,751 at avg $18.00
$2.34M
4.6% of stake
Sep 30, 2025No plan
Mark N. Tompkins
Large holder · sold 33,800 at $16.18
547K
1.2% of stake
Aug 14, 202510b5-1 plan
Jonathan Klamkin
Chief Executive Officer · sold 150,000 at $18.85
$2.83M
9.2% of stake

How to read this. Insiders sell for many reasons: taxes, diversifying, a house. Open-market buys are rarer and say more. A 10b5-1 plan is a trading schedule set up months in advance, so those sales were not timed on news. Large holders (funds and 10% owners) are listed under Everything but not counted as insiders. If you own or watch ALMU, we send a push when an executive buys or makes a large sale outside a plan.

Source: SEC Form 4 filings, filed within two business days of each trade and checked for new ones every hour.

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Held by ETFs

ALMU is in 6 US ETFs. The largest of them, with ALMU's weight in each:

Spot a number that looks wrong? Check it in ALMU's SEC filings or

Download this analysis as a PDF (Pro)

Data sourced from SEC EDGAR filings and third-party price providers. Scores, valuations, and metrics are algorithmic estimates. This is not investment advice. See our Terms and Methodology.

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