Aeluma (ALMU) insider trading
7 directors and officers declare holding shares of Aeluma (ALMU), each in their own filing with the SEC. The largest is Mark N. Tompkins (Former 10% Owner) with 1.8M shares, 10.1% of the company, worth $20.5M at the last close. The most recent move on file: Christopher P. Stewart sold 5,697 shares at $12.36 on Sep 30, 2026. Of the 7 with a trade on file, 3 last bought and 4 last sold. Purchases and sales are as reported on Forms 3, 4 and 5 — the SEC counts private transactions too, and many large sales follow a plan arranged in advance. Holdings are never added up: two spouses often report the same shares, and a joint filing carries a fund's.
| Insider | Role | Shares | % of company | Value | Last trade on file | Filed |
|---|---|---|---|---|---|---|
| Mark N. Tompkins | Former 10% Owner | 1.8M | 10.1% | $20.5M | sold 34,500 shares at $14.63 on Feb 4, 2026 | Feb 4, 2026 |
| Jonathan Klamkin | Chief Executive Officer · Director | 1.3M | 7.2% | $14.5M | sold 100,000 shares at $13.35 on Sep 21, 2026 | Sep 21, 2026 |
| Steven Denbaars | Director | 345,209 | 2.0% | $3.9M | sold 25,000 shares at $13.84 on Aug 26, 2026 | Aug 27, 2026 |
| Christopher P. Stewart | Chief Financial Officer | 67,781 | 0.38% | $774,736.83 | sold 5,697 shares at $12.36 on Sep 30, 2026 | Sep 30, 2026 |
| Michael Byron | Director | 38,343 | 0.22% | $438,260.49 | bought 25,000 shares at $5.93 on Sep 21, 2026 | Sep 21, 2026 |
| Craig H. Ensley | Director | 27,300 | 0.15% | $312,039.00 | bought 10,633 shares on Dec 3, 2025 | Dec 3, 2025 |
| John Kenneth Paglia | Director | 23,361 | 0.13% | $267,016.23 | bought 10,861 shares on Dec 3, 2025 | Dec 3, 2025 |
Each insider at Aeluma
- Mark N. Tompkins — Former 10% Owner
- Jonathan Klamkin — Chief Executive Officer · Director
- Steven Denbaars — Director
- Christopher P. Stewart — Chief Financial Officer
- Michael Byron — Director
- Craig H. Ensley — Director
- John Kenneth Paglia — Director
No longer filing
- James Seo — Interim CFO
- Lee McCarthy — 10% owner
What insiders bought and sold across AI stocks · All filings on sec.gov