ALMU

Aeluma, Inc.$16.41-0.60 (-3.55%)

Prev Close$17.04·MCap$258.6M·P/E—·Vol502.8K·Yield—

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Buys (12M)

$0.00

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Sells (12M)

$24.86M

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Net Activity

Net Seller

$24.86M

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Active Insiders

last 12 mo

Over the past 12 months, insider activity at Aeluma, Inc. (ALMU) has been exclusively selling, with 0 insider purchases totaling $0.00 and 19 insider sales totaling $24.86M. The most recent insider transaction was by Klamkin Jonathan (director, officer: Chief Executive Officer), who sold $421.7K worth of shares on Jul 2, 2026. Aeluma, Inc. operates in the Technology sector, within the Semiconductors industry, with a market cap of $258.6M.

ALMU Insider Trading Activity

Date	Insider	Role	Type	Shares	Avg Price	Value	Shares After
Jul 2, 2026	Klamkin Jonathan	director, officer: Chief Executive Officer	Sell	20,000	$21.08	$421.7K	2,503-89%
May 21, 2026	Denbaars Steven	director	Sell	25,000	$20.23	$505.6K	387,794
May 5, 2026	Klamkin Jonathan	director, officer: Chief Executive Officer	Sell	20,000	$24.96	$499.3K	18,103-52%
Mar 5, 2026	Klamkin Jonathan	director, 10 percent owner, officer: Chief Executive Officer	Sell	50,000	$18.05	$902.6K	1,451,192
Feb 27, 2026	Denbaars Steven	director	Sell	25,000	$16.71	$417.9K	397,588
Feb 4, 2026	Tompkins Mark N.	Insider	Sell	34,500	$14.71	$507.7K	0
Jan 29, 2026	Tompkins Mark N.	10% Owner	Sell	95,000	$16.15	$1.53M0.7% OS	0
Jan 20, 2026	Tompkins Mark N.	10% Owner	Sell	105,000	$19.14	$2.01M0.7% OS	0
Dec 23, 2025	Tompkins Mark N.	10% Owner	Sell	60,000	$16.62	$997.4K	0
Dec 18, 2025	Tompkins Mark N.	10% Owner	Sell	85,000	$14.68	$1.25M0.6% OS	0
Dec 9, 2025	Tompkins Mark N.	10% Owner	Sell	50,000	$17.09	$854.3K	0
Dec 4, 2025	Tompkins Mark N.	10% Owner	Sell	100,000	$16.08	$1.61M0.7% OS	0
Oct 17, 2025	Tompkins Mark N.	10% Owner	Sell	77,500	$16.67	$1.29M0.5% OS	0
Oct 15, 2025	Tompkins Mark N.	10% Owner	Sell	65,000	$20.09	$1.31M	0
Oct 10, 2025	Tompkins Mark N.	10% Owner	Sell	107,186	$17.87	$1.92M0.8% OS	0
Oct 7, 2025	Tompkins Mark N.	10% Owner	Sell	106,908	$17.25	$1.84M0.8% OS	0
Oct 2, 2025	Tompkins Mark N.	10% Owner	Sell	129,751	$18.00	$2.34M0.9% OS	0
Sep 29, 2025	Tompkins Mark N.	10% Owner	Sell	109,080	$16.82	$1.83M0.8% OS	0
Aug 14, 2025	Klamkin Jonathan	Chief Executive Officer	Sell	150,000	$18.85	$2.83M1.1% OS	0
Dec 22, 2022	Tompkins Mark N.	10% Owner	Buy	83,333	$3.00	$250.0K0.6% OS	0
Jun 22, 2021	Denbaars Steven	Director	Buy	100,000	$2.00	$200.0K0.7% OS	0
Jun 22, 2021	McCarthy Lee	10% Owner	Sell	649,570	$0.01	$4.0K4.6% OS	0
Jun 22, 2021	Tompkins Mark N.	10% Owner	Buy	357,500	$2.00	$715.0K2.5% OS	0

ALMU Insider Buying Activity

The following table shows recent insider purchases of Aeluma, Inc. (ALMU) stock reported via SEC Form 4 filings.

Date	Insider	Role	Type	Shares	Avg Price	Value
Dec 22, 2022	Tompkins Mark N.	10% Owner	Buy	83,333	$3.00	$250.0K0.6% OS
Jun 22, 2021	Denbaars Steven	Director	Buy	100,000	$2.00	$200.0K0.7% OS
Jun 22, 2021	Tompkins Mark N.	10% Owner	Buy	357,500	$2.00	$715.0K2.5% OS

ALMU Insider Selling Activity

The following table shows recent insider sales of Aeluma, Inc. (ALMU) stock reported via SEC Form 4 filings.

Date	Insider	Role	Type	Shares	Avg Price	Value	Shares After
Jul 2, 2026	Klamkin Jonathan	director, officer: Chief Executive Officer	Sell	20,000	$21.08	$421.7K	2,503-89%
May 21, 2026	Denbaars Steven	director	Sell	25,000	$20.23	$505.6K	387,794
May 5, 2026	Klamkin Jonathan	director, officer: Chief Executive Officer	Sell	20,000	$24.96	$499.3K	18,103-52%
Mar 5, 2026	Klamkin Jonathan	director, 10 percent owner, officer: Chief Executive Officer	Sell	50,000	$18.05	$902.6K	1,451,192
Feb 27, 2026	Denbaars Steven	director	Sell	25,000	$16.71	$417.9K	397,588
Feb 4, 2026	Tompkins Mark N.	Insider	Sell	34,500	$14.71	$507.7K	0
Jan 29, 2026	Tompkins Mark N.	10% Owner	Sell	95,000	$16.15	$1.53M0.7% OS	0
Jan 20, 2026	Tompkins Mark N.	10% Owner	Sell	105,000	$19.14	$2.01M0.7% OS	0
Dec 23, 2025	Tompkins Mark N.	10% Owner	Sell	60,000	$16.62	$997.4K	0
Dec 18, 2025	Tompkins Mark N.	10% Owner	Sell	85,000	$14.68	$1.25M0.6% OS	0
Dec 9, 2025	Tompkins Mark N.	10% Owner	Sell	50,000	$17.09	$854.3K	0
Dec 4, 2025	Tompkins Mark N.	10% Owner	Sell	100,000	$16.08	$1.61M0.7% OS	0
Oct 17, 2025	Tompkins Mark N.	10% Owner	Sell	77,500	$16.67	$1.29M0.5% OS	0
Oct 15, 2025	Tompkins Mark N.	10% Owner	Sell	65,000	$20.09	$1.31M	0
Oct 10, 2025	Tompkins Mark N.	10% Owner	Sell	107,186	$17.87	$1.92M0.8% OS	0
Oct 7, 2025	Tompkins Mark N.	10% Owner	Sell	106,908	$17.25	$1.84M0.8% OS	0
Oct 2, 2025	Tompkins Mark N.	10% Owner	Sell	129,751	$18.00	$2.34M0.9% OS	0
Sep 29, 2025	Tompkins Mark N.	10% Owner	Sell	109,080	$16.82	$1.83M0.8% OS	0
Aug 14, 2025	Klamkin Jonathan	Chief Executive Officer	Sell	150,000	$18.85	$2.83M1.1% OS	0
Jun 22, 2021	McCarthy Lee	10% Owner	Sell	649,570	$0.01	$4.0K4.6% OS	0