Mark N. Tompkins Insider Trading Activity
Mark N. Tompkins has been net-selling over the last 12 months with 0 purchases and 64 sales across 1 company.
ALMU is the most-traded position with 64 trades. The largest single transaction was a sale of ALMU for $1.2M on Oct 6, 2025.
Performance Scorecard
Forward stock performance after each transaction by Mark N. Tompkins. Buy returns measure price movement after open-market purchases; sell-avoided measures the loss avoided after open-market sales. Success rate counts trades where the insider's direction was right.
| PERIOD | AVG BUY RETURN | AVG SELL AVOIDED | SUCCESS RATE | TRADES |
|---|---|---|---|---|
| 30 days | — | +5.3% | 69% | 64 |
| 90 days | — | -7.3% | 41% | 64 |
| 120 days | — | -1.2% | 61% | 64 |
Performance based on stock price movement after each transaction date. Past results do not predict future returns. Not financial advice.
Price & Trades
Pro: Trade MarkersALMU · Aeluma, Inc.
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Showing the 50 most recent of 64 disclosed trades.
| DATE | TICKER | TYPE | SHARES | PRICE | VALUE | Δ OWNED | ROLE | FILING |
|---|---|---|---|---|---|---|---|---|
Feb 4, 2026 | ALMU | Sell | 5,956 | $15.12 | $90K | −0.3% | Other | |
Feb 4, 2026 | ALMU | Sell | 28,544 | $14.63 | $418K | −1.6% | Other | |
Feb 2, 2026 | ALMU | Sell | 37,500 | $15.74 | $590K | −2.0% | 10%+ Owner | |
Jan 30, 2026 | ALMU | Sell | 24,092 | $15.88 | $383K | −1.3% | 10%+ Owner | |
Jan 30, 2026 | ALMU | Sell | 908 | $16.79 | $15K | −0.0% | 10%+ Owner | |
Jan 29, 2026 | ALMU | Sell | 27,297 | $16.75 | $457K | −1.4% | 10%+ Owner | |
Jan 29, 2026 | ALMU | Sell | 5,203 | $17.16 | $89K | −0.3% | 10%+ Owner | |
Jan 22, 2026 | ALMU | Sell | 962 | $18.81 | $18K | −0.1% | 10%+ Owner | |
Jan 22, 2026 | ALMU | Sell | 29,038 | $18.05 | $524K | −1.5% | 10%+ Owner | |
Jan 21, 2026 | ALMU | Sell | 30,328 | $18.52 | $562K | −1.5% | 10%+ Owner | |
Jan 21, 2026 | ALMU | Sell | 12,947 | $19.30 | $250K | −0.7% | 10%+ Owner | |
Jan 21, 2026 | ALMU | Sell | 1,715 | $20.44 | $35K | −0.1% | 10%+ Owner | |
Jan 21, 2026 | ALMU | Sell | 10 | $21.24 | $212.4 | −0.0% | 10%+ Owner | |
Jan 20, 2026 | ALMU | Sell | 29,112 | $20.66 | $601K | −1.4% | 10%+ Owner | |
Jan 20, 2026 | ALMU | Sell | 888 | $21.58 | $19K | −0.0% | 10%+ Owner | |
Dec 26, 2025 | ALMU | Sell | 6,970 | $16.91 | $118K | −0.3% | 10%+ Owner | |
Dec 26, 2025 | ALMU | Sell | 20,368 | $18.01 | $367K | −1.0% | 10%+ Owner | |
Dec 26, 2025 | ALMU | Sell | 2,662 | $18.39 | $49K | −0.1% | 10%+ Owner | |
Dec 24, 2025 Filed 3d late | ALMU | Sell | 15,000 | $16.05 | $241K | −0.7% | 10%+ Owner | |
Dec 23, 2025 Filed 4d late | ALMU | Sell | 15,000 | $14.87 | $223K | −0.7% | 10%+ Owner | |
Dec 22, 2025 | ALMU | Sell | 35,000 | $14.83 | $519K | −1.7% | 10%+ Owner | |
Dec 19, 2025 | ALMU | Sell | 30,000 | $14.70 | $441K | −1.4% | 10%+ Owner | |
Dec 18, 2025 | ALMU | Sell | 20,000 | $14.37 | $287K | −0.9% | 10%+ Owner | |
Dec 10, 2025 | ALMU | Sell | 20,000 | $17.49 | $350K | −0.9% | 10%+ Owner | |
Dec 9, 2025 | ALMU | Sell | 10,861 | $16.39 | $178K | −0.5% | 10%+ Owner | |
Dec 9, 2025 | ALMU | Sell | 19,139 | $17.06 | $327K | −0.9% | 10%+ Owner | |
Dec 8, 2025 | ALMU | Sell | 988 | $16.87 | $17K | −0.0% | 10%+ Owner | |
Dec 8, 2025 | ALMU | Sell | 39,012 | $16.04 | $626K | −1.7% | 10%+ Owner | |
Dec 5, 2025 | ALMU | Sell | 28,390 | $16.12 | $458K | −1.2% | 10%+ Owner | |
Dec 5, 2025 | ALMU | Sell | 1,610 | $16.49 | $27K | −0.1% | 10%+ Owner | |
Dec 4, 2025 Filed 3d late | ALMU | Sell | 11,500 | $15.49 | $178K | −0.5% | 10%+ Owner | |
Dec 4, 2025 Filed 3d late | ALMU | Sell | 18,500 | $16.37 | $303K | −0.8% | 10%+ Owner | |
Oct 20, 2025 | ALMU | Sell | 37,500 | $16.39 | $615K | −1.6% | 10%+ Owner | |
Oct 17, 2025 | ALMU | Sell | 33,344 | $16.75 | $559K | −1.4% | 10%+ Owner | |
Oct 17, 2025 | ALMU | Sell | 5,913 | $17.77 | $105K | −0.3% | 10%+ Owner | |
Oct 17, 2025 | ALMU | Sell | 743 | $18.45 | $14K | −0.0% | 10%+ Owner | |
Oct 16, 2025 | ALMU | Sell | 17,540 | $18.97 | $333K | −0.7% | 10%+ Owner | |
Oct 16, 2025 | ALMU | Sell | 6,650 | $19.96 | $133K | −0.3% | 10%+ Owner | |
Oct 16, 2025 | ALMU | Sell | 810 | $20.72 | $17K | −0.0% | 10%+ Owner | |
Oct 15, 2025 | ALMU | Sell | 24,147 | $20.11 | $486K | −1.0% | 10%+ Owner | |
Oct 15, 2025 | ALMU | Sell | 15,853 | $21.31 | $338K | −0.7% | 10%+ Owner | |
Oct 14, 2025 | ALMU | Sell | 36,855 | $19.86 | $732K | −1.5% | 10%+ Owner | |
Oct 13, 2025 | ALMU | Sell | 35,031 | $16.97 | $594K | −1.4% | 10%+ Owner | |
Oct 13, 2025 | ALMU | Sell | 300 | $17.57 | $5K | −0.0% | 10%+ Owner | |
Oct 10, 2025 | ALMU | Sell | 4,413 | $17.16 | $76K | −0.2% | 10%+ Owner | |
Oct 10, 2025 | ALMU | Sell | 30,587 | $16.60 | $508K | −1.2% | 10%+ Owner | |
Oct 9, 2025 | ALMU | Sell | 1,000 | $17.25 | $17K | −0.0% | 10%+ Owner | |
Oct 9, 2025 | ALMU | Sell | 35,908 | $16.54 | $594K | −1.4% | 10%+ Owner | |
Oct 8, 2025 | ALMU | Sell | 700 | $18.14 | $13K | −0.0% | 10%+ Owner | |
Oct 8, 2025 | ALMU | Sell | 34,300 | $17.46 | $599K | −1.3% | 10%+ Owner |
Top Companies Traded
| TICKER | COMPANY | TRADES | TOTAL VOLUME |
|---|---|---|---|
| ALMU | Aeluma, Inc. | 64 | $19.3M |
Other insiders at Aeluma, Inc.
2 other tracked filers at ALMU.