AELUMA INC (ALMU) — insider trading
Information Technology · NASDAQ
AELUMA INC (ALMU) has 60 reported SEC Form 4 insider transactions in our data, including 28 open-market sales among the most recent 60 (latest 2026-09-30).
Recent Form 4 transactions
| Date | Insider | Role | Type | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| 2026-09-30 | Stewart Christopher P. | Officer (Chief Financial Officer) | Shares withheld for taxes / exercise cost | 5,697 | $12.36 | $70.4K | Form 4 |
| 2026-09-21 | Klamkin Jonathan | Director, Officer (Chief Executive Officer) | Grant / award / vesting (derivative) | 75,135 | — | $0 | Form 4 |
| 2026-09-21 | Klamkin Jonathan | Director, Officer (Chief Executive Officer) | Shares withheld for taxes / exercise cost | 4,547 | $13.61 | $61.9K | Form 4 |
| 2026-09-21 | Klamkin Jonathan | Director, Officer (Chief Executive Officer) | Grant / award / vesting | 12,675 | — | $0 | Form 4 |
| 2026-09-21 | Klamkin Jonathan | Director, Officer (Chief Executive Officer) | Grant / award / vesting | 31,771 | — | $0 | Form 4 |
| 2026-09-21 | Klamkin Jonathan | Director, Officer (Chief Executive Officer) | Open-market sale | 100,000 | $13.35 | $1.34M | Form 4 |
| 2026-09-21 | Stewart Christopher P. | Officer (Chief Financial Officer) | Grant / award / vesting (derivative) | 37,568 | — | $0 | Form 4 |
| 2026-09-21 | Stewart Christopher P. | Officer (Chief Financial Officer) | Shares withheld for taxes / exercise cost | 1,450 | $13.61 | $19.7K | Form 4 |
| 2026-09-21 | Stewart Christopher P. | Officer (Chief Financial Officer) | Grant / award / vesting | 4,042 | — | $0 | Form 4 |
| 2026-09-21 | Stewart Christopher P. | Officer (Chief Financial Officer) | Grant / award / vesting | 15,886 | — | $0 | Form 4 |
| 2026-09-21 | Byron Michael | Director | Option exercise / conversion (derivative) | 25,000 | — | $0 | Form 4 |
| 2026-09-21 | Byron Michael | Director | Option exercise / conversion | 25,000 | $5.93 | $148.3K | Form 4 |
| 2026-08-27 | Denbaars Steven | Director | Open-market sale | 12,500 | $13.82 | $172.7K | Form 4/A |
| 2026-08-27 | Denbaars Steven | Director | Open-market sale | 12,500 | $13.82 | $172.7K | Form 4 |
| 2026-08-26 | Denbaars Steven | Director | Open-market sale | 12,500 | $13.84 | $173.0K | Form 4/A |
| 2026-08-26 | Denbaars Steven | Director | Open-market sale | 12,500 | $13.84 | $173.0K | Form 4 |
| 2026-08-03 | Klamkin Jonathan | Director, Officer (Chief Executive Officer) | Open-market sale | 15,810 | $16.85 | $266.4K | Form 4 |
| 2026-08-03 | Klamkin Jonathan | Director, Officer (Chief Executive Officer) | Open-market sale | 4,190 | $16.29 | $68.3K | Form 4 |
| 2026-08-03 | Klamkin Jonathan | Director, Officer (Chief Executive Officer) | Bona fide gift | 20,000 | — | $0 | Form 4 |
| 2026-08-03 | Klamkin Jonathan | Director, Officer (Chief Executive Officer) | Bona fide gift | 20,000 | — | $0 | Form 4 |
| 2026-07-01 | Klamkin Jonathan | Director, Officer (Chief Executive Officer) | Open-market sale | 100 | $21.56 | $2.2K | Form 4 |
| 2026-07-01 | Klamkin Jonathan | Director, Officer (Chief Executive Officer) | Open-market sale | 19,900 | $21.08 | $419.5K | Form 4 |
| 2026-07-01 | Klamkin Jonathan | Director, Officer (Chief Executive Officer) | Bona fide gift | 20,000 | — | $0 | Form 4 |
| 2026-07-01 | Klamkin Jonathan | Director, Officer (Chief Executive Officer) | Bona fide gift | 20,000 | — | $0 | Form 4 |
| 2026-06-01 | Klamkin Jonathan | Director, Officer (Chief Executive Officer) | Open-market sale | 8,200 | $26.25 | $215.2K | Form 4 |
| 2026-06-01 | Klamkin Jonathan | Director, Officer (Chief Executive Officer) | Open-market sale | 1,600 | $25.12 | $40.2K | Form 4 |
| 2026-06-01 | Klamkin Jonathan | Director, Officer (Chief Executive Officer) | Open-market sale | 7,900 | $24.39 | $192.6K | Form 4 |
| 2026-06-01 | Klamkin Jonathan | Director, Officer (Chief Executive Officer) | Open-market sale | 1,400 | $23.32 | $32.6K | Form 4 |
| 2026-06-01 | Klamkin Jonathan | Director, Officer (Chief Executive Officer) | Open-market sale | 900 | $22.19 | $20.0K | Form 4 |
| 2026-06-01 | Klamkin Jonathan | Director, Officer (Chief Executive Officer) | Bona fide gift | 20,000 | — | $0 | Form 4 |
| 2026-06-01 | Klamkin Jonathan | Director, Officer (Chief Executive Officer) | Bona fide gift | 20,000 | — | $0 | Form 4 |
| 2026-05-20 | Denbaars Steven | Director | Open-market sale | 942 | $21.30 | $20.1K | Form 4 |
| 2026-05-20 | Denbaars Steven | Director | Open-market sale | 11,558 | $20.40 | $235.7K | Form 4 |
| 2026-05-19 | Denbaars Steven | Director | Open-market sale | 5,085 | $20.61 | $104.8K | Form 4 |
| 2026-05-19 | Denbaars Steven | Director | Open-market sale | 7,415 | $19.56 | $145.0K | Form 4 |
| 2026-05-01 | Klamkin Jonathan | Director, Officer (Chief Executive Officer) | Open-market sale | 676 | $25.71 | $17.4K | Form 4 |
| 2026-05-01 | Klamkin Jonathan | Director, Officer (Chief Executive Officer) | Open-market sale | 15,024 | $25.15 | $377.8K | Form 4 |
| 2026-05-01 | Klamkin Jonathan | Director, Officer (Chief Executive Officer) | Open-market sale | 4,300 | $24.20 | $104.1K | Form 4 |
| 2026-05-01 | Klamkin Jonathan | Director, Officer (Chief Executive Officer) | Bona fide gift | 20,000 | — | $0 | Form 4 |
| 2026-05-01 | Klamkin Jonathan | Director, Officer (Chief Executive Officer) | Bona fide gift | 20,000 | — | $0 | Form 4 |
| 2026-04-01 | Klamkin Jonathan | Director, Officer (Chief Executive Officer) | Bona fide gift | 20,000 | — | $0 | Form 4 |
| 2026-04-01 | Klamkin Jonathan | Director, Officer (Chief Executive Officer) | Bona fide gift | 20,000 | — | $0 | Form 4 |
| 2026-04-01 | Klamkin Jonathan | Director, Officer (Chief Executive Officer) | Open-market sale | 20,000 | $13.10 | $261.9K | Form 4 |
| 2026-03-04 | Klamkin Jonathan | Director, Officer (Chief Executive Officer) | Bona fide gift | 50,000 | — | $0 | Form 4 |
| 2026-03-04 | Klamkin Jonathan | Director, Officer (Chief Executive Officer) | Bona fide gift | 50,000 | — | $0 | Form 4 |
| 2026-03-04 | Klamkin Jonathan | Director, Officer (Chief Executive Officer), 10% owner | Open-market sale | 21,794 | $18.41 | $401.2K | Form 4 |
| 2026-03-04 | Klamkin Jonathan | Director, Officer (Chief Executive Officer), 10% owner | Open-market sale | 28,206 | $17.77 | $501.4K | Form 4 |
| 2026-02-26 | Denbaars Steven | Director | Open-market sale | 12,500 | $15.85 | $198.1K | Form 4 |
| 2026-02-25 | Denbaars Steven | Director | Open-market sale | 12,500 | $17.58 | $219.8K | Form 4 |
| 2026-02-04 | Tompkins Mark N. | Other | Open-market sale | 5,956 | $15.12 | $90.1K | Form 4 |
| 2026-02-04 | Tompkins Mark N. | Other | Open-market sale | 28,544 | $14.63 | $417.6K | Form 4 |
| 2025-12-29 | Klamkin Jonathan | Director, Officer (Chief Executive Officer) | Bona fide gift | 1,126,995 | — | $0 | Form 4 |
| 2025-12-29 | Klamkin Jonathan | Director, Officer (Chief Executive Officer) | Bona fide gift | 1,126,995 | — | $0 | Form 4 |
| 2025-12-19 | Klamkin Jonathan | Director, Officer (Chief Executive Officer) | Bona fide gift | 350,000 | — | $0 | Form 4 |
| 2025-12-19 | Klamkin Jonathan | Director, Officer (Chief Executive Officer) | Bona fide gift | 350,000 | — | $0 | Form 4 |
| 2025-12-03 | Denbaars Steven | Director | Grant / award / vesting | 10,121 | — | $0 | Form 4 |
| 2025-12-03 | Byron Michael | Director | Grant / award / vesting | 13,343 | — | $0 | Form 4 |
| 2025-12-03 | Paglia John Kenneth | Director | Grant / award / vesting | 10,861 | — | $0 | Form 4 |
| 2025-12-03 | ENSLEY CRAIG H | Director | Grant / award / vesting | 10,633 | — | $0 | Form 4 |
| 2025-09-01 | Byron Michael | Director | Grant / award / vesting (derivative) | 3,653 | — | $0 | Form 4 |
Ask the chat about ALMU's insider activity →
Transaction types are the SEC Form 4 codes: open-market purchases (P) and sales (S) are the only rows that reflect open-market conviction. Awards/vesting (A), option exercises (M/X/C), shares withheld for taxes (F) and gifts (G) are compensation or mechanical, not buying or selling on the open market. Sales may be planned and non-discretionary (e.g. a Rule 10b5-1 plan); open-market buying is not a recommendation to buy. Informational only — not financial advice.
Source: SEC EDGAR Form 3/4/5. See the full company profile: AELUMA INC (ALMU).
Last updated 2026-09-30 (most recent filing date).
Informational only — NOT financial advice. Insider filings are sourced from SEC EDGAR and shown with their reported dates.