Aeluma Insider Mark Tompkins Has Sold $21.4M in ALMU Stock While Retaining 1.79M Shares
Mark Tompkins, a major Aeluma insider, has sold $21.4M in ALMU stock across 155 transactions while maintaining a large 1.79M-share position worth $27M.
Mark Tompkins, a major insider at semiconductor company Aeluma (ALMU), has sold $21.4 million in stock across 155 transactions — but still holds 1.79 million shares.
The Numbers
| Metric | Value |
|---|---|
| Career Sell Value | $21.4M |
| Career Buy Value | $2.2M |
| Total Transactions | 155 |
| Last Transaction | 2026-02-02 |
| Shares Remaining | 1,790,488 |
Recent Activity
| Date | Type | Shares | Price | Est. Value |
|---|---|---|---|---|
| 2026-02-04 | Sell | 5,956 | $15.1200 | $90K |
| 2026-02-04 | Sell | 28,544 | $14.6300 | $418K |
| 2026-02-02 | Sell | 37,500 | $15.7400 | $590K |
| 2026-01-30 | Sell | 908 | $16.7900 | $15K |
| 2026-01-30 | Sell | 24,092 | $15.8800 | $383K |
Tompkins has been an active seller in early 2026, disposing of $2.0M in shares across six transactions in late January and early February at prices between $14.63 and $17.16. The sales appear systematic — consistent lot sizes across consecutive trading days.
What It Means
Unlike many insider sellers who exit entirely, Tompkins maintains a commanding 1.79M-share position worth approximately $27M at current prices. His $2.2M in career purchases alongside $21.4M in sales suggests he built his position primarily through grants and options. The 10:1 sell-to-buy ratio is moderate by insider standards.
Aeluma operates in the compound semiconductor space, targeting applications in lidar, 3D sensing, and defense. As a small-cap company, ALMU is more sensitive to insider trading signals. Tompkins' pattern of selling while retaining a large position suggests portfolio diversification rather than a bearish outlook.
What to Watch
- ALMU revenue growth from lidar and defense contracts
- Whether Tompkins' selling pace increases at higher prices
- Institutional interest in upcoming 13F filings
- Aeluma product adoption in autonomous vehicle programs
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