ALMU (Aeluma, Inc. Common Stock)
Insider Trading Activity
Every open-market purchase and sale reported by ALMU officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-28 | Steven Denbaars | Director | Sell | — | — |
| 2026-08-28 | Steven Denbaars | Director | Sell | — | — |
| 2026-08-05 | Jonathan Klamkin | Chief Executive Officer | MIXED | — | — |
| 2026-07-02 | Jonathan Klamkin | Chief Executive Officer | MIXED | — | — |
| 2026-06-03 | Jonathan Klamkin | Chief Executive Officer | MIXED | — | — |
| 2026-05-21 | Steven Denbaars | Director | Sell | — | — |
| 2026-05-05 | Jonathan Klamkin | Chief Executive Officer | MIXED | — | — |
| 2026-04-03 | Jonathan Klamkin | Chief Executive Officer | Sell | — | — |
| 2026-03-05 | Jonathan Klamkin | Chief Executive Officer | Sell | — | — |
| 2026-03-02 | Steven Denbaars | Director | A | — | — |
| 2026-03-02 | CRAIG H ENSLEY | Director | A | — | — |
| 2026-03-02 | John Kenneth Paglia | Director | A | — | — |
| 2026-03-02 | Michael Byron | Director | A | — | — |
| 2026-02-27 | Steven Denbaars | Director | Sell | — | — |
| 2026-02-05 | Mark N. Tompkins | — | Sell | — | — |
| 2026-02-02 | Mark N. Tompkins | 10%+ Owner | Sell | — | — |
| 2026-01-22 | Mark N. Tompkins | 10%+ Owner | Sell | — | — |
| 2026-01-02 | Lee McCarthy | 10%+ Owner | Sell | — | — |
| 2025-12-29 | Mark N. Tompkins | 10%+ Owner | Sell | — | — |
| 2025-12-22 | Mark N. Tompkins | 10%+ Owner | Sell | — | — |
| 2025-12-11 | Mark N. Tompkins | 10%+ Owner | Sell | — | — |
| 2025-12-09 | Mark N. Tompkins | 10%+ Owner | Sell | — | — |
| 2025-10-21 | Mark N. Tompkins | 10%+ Owner | Sell | — | — |
| 2025-10-17 | Mark N. Tompkins | 10%+ Owner | Sell | — | — |
| 2025-10-14 | Mark N. Tompkins | 10%+ Owner | Sell | — | — |
| 2025-10-09 | Mark N. Tompkins | 10%+ Owner | Sell | — | — |
| 2025-10-06 | Mark N. Tompkins | 10%+ Owner | Sell | — | — |
| 2025-10-06 | Mark N. Tompkins | 10%+ Owner | Sell | — | — |
| 2025-10-02 | Mark N. Tompkins | 10%+ Owner | Sell | — | — |
| 2025-09-09 | Jonathan Klamkin | Chief Executive Officer | MIXED | — | — |
| 2025-08-14 | Jonathan Klamkin | Chief Executive Officer | MIXED | — | — |
| 2025-05-23 | Steven Denbaars | Director | A | — | — |
| 2025-05-23 | John Kenneth Paglia | Director | A | — | — |
| 2025-05-23 | CRAIG H ENSLEY | Director | A | — | — |
| 2025-03-31 | Mark N. Tompkins | 10%+ Owner | C | — | — |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| — | 10%+ Owner | 1,796,444 | — |
| — | Chief Executive Officer | 1,329,398 | — |
| — | 10%+ Owner | 977,425 | — |
| — | Director | 357,709 | — |
| — | Director | 27,300 | — |
| — | Director | 23,361 | — |
| — | Director | 13,343 | — |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the ALMU quote page; the site-wide leaderboard is on the insider transactions hub.