Aeluma's CEO sold stock every month since March while pitching a $1.8 trillion AI market

Founder-CEO Jonathan Klamkin has sold Aeluma shares in every month from March through September, about $4.26 million in all, while the company funded a $9.2 million loss with $43.5 million of freshly issued stock. The AI-datacom products are pitched for 2028 to 2030.

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Vincent JiangVincent Jiang · 3 min read
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A 300mm silicon photonics wafer patterned with repeated die, catching rainbow light across its surface.
A 300mm silicon photonics wafer. Aeluma builds its AI-datacom devices on large-diameter silicon wafers like this one.

Five days after the earnings call, a 100,000-share sale

On 21 September 2026, five days after Aeluma's fourth-quarter call and six days after its Sumitomo wafer agreement, founder and CEO Jonathan Klamkin sold 100,000 shares at a weighted average $13.3532, worth $1,335,320. It was the first sale under a Rule 10b5-1 plan adopted 23 May, and five times the 20,000 shares a month he had sold since April. His family trust kept 1,226,995 shares. 12

A $582,000 quarter under a $1.8 trillion pitch

The call sold a supercycle: a data-center semiconductor market that "will surpass $1.8 trillion in 2030," in Klamkin's own release, with management directing 10 to 15 percent of that outlay to photonics and volume deployments eyed for 2028 to 2030. The quarter underneath: $582,000 of revenue, down from $1.3 million a year earlier, nearly all government R&D. The year: $4.5 million of revenue against a $9.2 million net loss, and no fiscal 2027 guidance beyond $2.3 million of booked government contracts. 34

The $56 million cushion is buyers' money

Cash ended June at $56.0 million, up from $15.7 million a year earlier, with no debt. The build was equity: $43.5 million of net public-offering proceeds in fiscal 2026, including $20.1 million from an at-the-market program that issued 830,484 shares at an average $24.87. Weighted shares rose from 13.2 million to 17.7 million. Those ATM buyers paid $24.87 for stock closing 25 September at $13.29, and the two-analyst $23.50 average target rests on the same 2028-to-2030 window. 23

The filings name two sellers behind the wire's 'insider'

MT Newswires logged the September sale without naming anyone; "Aeluma Insider" is all the headline says. The filings show two sellers and a longer run. Klamkin sold in every month from March through September: 250,000 shares for about $4.26 million, at weighted averages from $13.10 in April to $25.03 in June. Director Steven Denbaars sold 25,000 shares in May for about $505,600 under a plan adopted 20 November 2025, then 25,000 more in August for $345,741, a filing noting no trading plan. 256789101112

Aeluma's CEO sold stock every month from March to September

$0K$500K$1,000K$1,500K4 Mar (50k sh)1 Apr (20k sh)1 May (20k sh)1 Jun (20k sh)1 Jul (20k sh)3 Aug (20k sh)21 Sep (100k sh)First sale under the May 23 plan
Data
Klamkin sale proceeds
4 Mar (50k sh)$902.6K
1 Apr (20k sh)$262K
1 May (20k sh)$499.3K
1 Jun (20k sh)$500.7K
1 Jul (20k sh)$421.7K
3 Aug (20k sh)$334.6K
21 Sep (100k sh)$1,335.3K
Proceeds in thousands of dollars, shares sold times weighted average price; bar labels give shares sold. March through August sales ran under a Rule 10b5-1 plan adopted 3 December 2025, the September sale under a plan adopted 23 May 2026. Sources: SEC EDGAR Form 4 filings, March to September 2026.1,5,6,7,8,9,10

The bull case is priced in more shares

The defense is real: the spring and summer sales ran under a plan adopted 3 December 2025 and the September sale under one adopted 23 May, both predating the CHIPS letter of intent and the earnings call. The balance sheet carries no debt, a $30 million CHIPS LOI, $5.3 million of new contracts including NASA and Navy work, and a team past 30 people. Unresolved: the CHIPS money is expected to arrive as equity rather than revenue, and Russell benchmarks dropped the stock in June. 234

What to watch next

The next reads are the multimillion-dollar NRE negotiations with AI-datacom customers, definitive CHIPS terms, and $10 to $12 million of planned capex against a 2028 to 2030 window. Aeluma sold its own stock at an average $24.87; its CEO's 250,000 shares averaged about $17, and the biggest batch printed at $13.35, six cents above the tape. 234

Public buyers paid $24.87 for Aeluma stock its CEO sold at $17 and $13.35

  • Estimate
$0$5$10$15$20$25ATM buyers paid (avg)$24.87Analyst target (avg)$23.5Klamkin sales (avg)$1721 Sep sale$13.3525 Sep close$13.29
Data
Value
ATM buyers paid (avg)$24.87
Analyst target (avg) (estimate)$23.5
Klamkin sales (avg)$17
21 Sep sale$13.35
25 Sep close$13.29
Dollars per share. The ATM average is what Aeluma issued 830,484 shares at in fiscal 2026; the Klamkin average covers 250,000 shares sold from March through September 2026; the target is the two-analyst average and rests on the 2028 to 2030 window. Sources: Aeluma fiscal 2026 results; SEC EDGAR Form 4 filings; MT Newswires.1,2,3,5,6,7,8,9,10

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