Mark N. Tompkins sold $1.9M of ALMU
owner at Aeluma, Inc.. 107,186 shares at an average of $17.87, traded Oct 10, 2025, filed Oct 14, 2025.
Score components
- +12Role10% owner
- +25Trade size$1.9M at market
- 0Share of holdings soldSold 4.2% of holdings
- 0ClusterNo other insider selling within 14 days
What happened after comparable sells
Same side and tier, against the S&P 500, at 1, 3 and 6 months. Shown to Pro users; the whole table is on the backtest page.
This signal so far: 1m -32.0%, 3m +14.6%, 6m -27.7%.
Price around the trade, and since
From a quarter before the trade to today. The arrow is the trade, the circle the day the filing reached EDGAR, which is the first day anyone outside could act; the dotted line is the S&P 500 rebased to that day's close.
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value; the dashed line is the close on the filing day, the dotted line SPY rebased to it.Charts by TradingView Lightweight Charts™
Rows in this filing
Every transaction in Form 4 0001213900-25-098954, as filed. Open on EDGAR
| Date | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|
| Oct 10, 2025 | SOpen-market sale Common Stock | -30,587 | $16.60 | $508k | 2,539,087 | Oct 14, 2025 |
| Oct 10, 2025 | SOpen-market sale Common Stock | -4,413 | $17.16 | $76k | 2,534,674 | Oct 14, 2025 |
| Oct 13, 2025 | SOpen-market sale Common Stock | -35,031 | $16.97 | $594k | 2,499,643 | Oct 14, 2025 |
| Oct 13, 2025 | SOpen-market sale Common Stock | -300 | $17.57 | $5,271 | 2,499,343 | Oct 14, 2025 |
| Oct 14, 2025 | SOpen-market sale Common Stock | -36,855 | $19.86 | $732k | 2,462,488 | Oct 14, 2025 |
Related signals
Other insiders at Aeluma, Inc. and this insider’s other filings.
| Score | Company | Insider | Value | Holdings | Filed |
|---|---|---|---|---|---|
| 30Weak | Aeluma, Inc. | Jonathan Klamkin Chief Executive Officer | $1.3M 100,000 shares | -8% | |
| 30Weak | ALMUsell Aeluma, Inc. | Steven Denbaars director | $346k 25,000 shares | -7% | |
| 10Weak | Aeluma, Inc. | Steven Denbaars director | $346k 25,000 shares | -7% | |
| 40Moderate | Aeluma, Inc. | Jonathan Klamkin Chief Executive Officer | $335k 20,000 shares | -89% | |
| 41Moderate | Aeluma, Inc. | Jonathan Klamkin Chief Executive Officer | $422k 20,000 shares | -89% | |
| 51Moderate | Aeluma, Inc. | Jonathan Klamkin Chief Executive Officer | $501k 20,000 shares | -89% | |
| 21Weak | Aeluma, Inc. | Steven Denbaars director | $506k 25,000 shares | -6% | |
| 43Moderate | Aeluma, Inc. | Jonathan Klamkin Chief Executive Officer | $499k 20,000 shares | -89% | |
| 18Weak | Aeluma, Inc. | Jonathan Klamkin Chief Executive Officer | $262k 20,000 shares | -1% | |
| 37Weak | Aeluma, Inc. | Jonathan Klamkin Chief Executive Officer | $903k 50,000 shares | -3% |
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.