Stuart D Porter bought $1000k of AIRJ
director, owner at Montana Technologies Corp.. 342,645 shares at an average of $2.92, traded Dec 8, 2025, filed Dec 10, 2025.
Score components
- +15RoleDirector
- +25Trade size$1000k at market
- +10Relative to holdingsHoldings up 122%
- +18Price context0% above the 52-week low; 75% below the 52-week high
- +15Cluster4 insiders buying within 14 days
- 0Repeat buyingFirst buy in 90 days
- 0Track recordToo few past buys to judge (0 with prices)
What happened after comparable buys
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 +42.9%, 3m +15.6%, 6m +40.3%.
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 0001193125-25-314654, as filed. Open on EDGAR
| Date | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|
| Dec 8, 2025 | POpen-market purchase Class A Common Stock | +31,695 | $2.77 | $88k | 312,083 | Dec 10, 2025 |
| Dec 9, 2025 | POpen-market purchase Class A Common Stock | +46,800 | $2.84 | $133k | 358,883 | Dec 10, 2025 |
| Dec 10, 2025 | POpen-market purchase Class A Common Stock | +264,150 | $2.95 | $779k | 623,033 | Dec 10, 2025 |
Related signals
Other insiders at Montana Technologies Corp. and this insider’s other filings.
| Score | Company | Insider | Value | Holdings | Filed |
|---|---|---|---|---|---|
| 26Weak | AIRJsell Montana Technologies Corp. | Chad MacDonald Chief Legal Officer | $34k 7,307 shares | -14% | |
| 0Weak | AIRJsell Montana Technologies Corp. | Jeff Gutke Chief Administrative Officer | $11k 3,462 shares | -3% | |
| 67Notable | Montana Technologies Corp. | Stuart D Porter director, owner | $500k 153,846 shares | +25% | |
| 56Moderate | Montana Technologies Corp. | Patrick C Eilers Executive Chairman | $250k 76,923 shares | +4% | |
| 48Moderate | Montana Technologies Corp. | Matthew B Jore Chief Executive Officer | $25k 7,692 shares | +0% | |
| 66Notable | Montana Technologies Corp. | Thomas Edward Murphy director | $99k 31,950 shares | - | |
| 58Moderate | Montana Technologies Corp. | Matthew B Jore Chief Executive Officer | $30k 10,500 shares | +0% | |
| 58Moderate | Montana Technologies Corp. | Stephen S. Pang Chief Financial Officer | $6,399 2,169 shares | +13% | |
| 25Weak | Montana Technologies Corp. | Matthew B Jore Chief Executive Officer | $16k 3,865 shares | -0% | |
| 20Weak | Montana Technologies Corp. | Patrick C Eilers Executive Chairman | $8,169 1,931 shares | -0% |
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.