Insider · CIK 0001859732
William A. Heyburn
Files at SRTA (Strata Critical Medical, Inc.). First filing Dec 3, 2024, latest Dec 10, 2025.
William A. Heyburn files SEC Form 4 as CFO, CEO and director at SRTA (Strata Critical Medical, Inc.). Since Dec 3, 2024, William A. Heyburn has reported 1 open-market buy worth $76k and 5 open-market sells worth $1.5M, the latest filed on Dec 10, 2025.
A track record needs three past buys with six months of prices behind them; William A. Heyburn has 0, so none is measured yet.
The newest scored trade: bought $76k of SRTA on Dec 9, 2025, filed Dec 10, 2025, scored 45 (moderate). In the last 12 months: 1 buy worth $76k and 0 sells worth $0.
Where the trades landed
Last year at the company this insider has traded most, with each buy and sell on the bar it happened.
SRTA: Strata Critical Medical, Inc.
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™
Signals
This insider’s open-market buys and sells, scored.
| Score | Company | Value | Holdings | Price context | Filed |
|---|---|---|---|---|---|
| 45Moderate | Strata Critical Medical, Inc. | $76k 17,000 shares | +1% | +81% from low-23% from high | |
| 23Weak | Strata Critical Medical, Inc. | $232k 46,918 shares | -3% | +76% from low-10% from high | |
| 26Weak | Strata Critical Medical, Inc. | $407k 100,000 shares | -7% | +69% from low-14% from high | |
| 5Weak | Strata Critical Medical, Inc. | $525k 104,570 shares | -8% | - | |
| 29Weak | Strata Critical Medical, Inc. | $197k 39,285 shares | -3% | - | |
| 27Weak | Strata Critical Medical, Inc. | $120k 23,815 shares | -2% | - |
Planned sales
Form 144 notices this insider filed before selling restricted or control stock, newest first.
| Filed | Company | Shares | Value | Sale date | Past 3 months |
|---|---|---|---|---|---|
| Aug 4, 2025 | SRTA BLADE AIR MOBILITY, INC. | 46,918 0.06% of outstanding | $177k | Aug 4, 2025 | $407k |
| Jun 9, 2025 | SRTA BLADE AIR MOBILITY, INC. | 100,000 0.12% of outstanding | $380k | Jun 9, 2025 | none |
| Nov 29, 2024 | SRTA BLADE AIR MOBILITY INC | 200,000 0.26% of outstanding | $878k | Nov 29, 2024 | none |
Transactions
Every row this insider has filed, 28 in all, newest first.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Sep 24, 2026 | SRTA Strata Critical Medical, Inc. | AGrant or award Class A common stock, $0.0001 par value per share | +177,858 | $0.00 | $0 | 1,856,206 | 18 d ago |
| Sep 24, 2026 | SRTA Strata Critical Medical, Inc. | FTax withholding Class A common stock, $0.0001 par value per share | -98,356 | $5.27 | $518k | 1,757,850 | 18 d ago |
| Sep 8, 2026 | SRTA Strata Critical Medical, Inc. | FTax withholding Class A common stock, $0.0001 par value per share | -31,671 | $5.31 | $168k | 1,678,348 | 33 d ago |
| Mar 8, 2026 | SRTA Strata Critical Medical, Inc. | FTax withholding Class A common stock, $0.0001 par value per share | -31,314 | $4.54 | $142k | 1,336,774 | Mar 10, 2026 |
| Dec 10, 2025 | SRTA Strata Critical Medical, Inc. | FTax withholding Class A common stock, $0.0001 par value per share | -35,348 | $4.38 | $155k | 1,368,088 | Dec 12, 2025 |
| Dec 9, 2025 | SRTA Strata Critical Medical, Inc. | POpen-market purchase Class A common stock, $0.0001 par value per share | +17,000 | $4.47 | $76k | 1,403,436 | Dec 10, 2025 |
| Oct 31, 2025 | SRTA Strata Critical Medical, Inc. | AGrant or award Class A common stock, $0.0001 par value per share | +181,072 | $0.00 | $0 | 1,486,569 | Nov 5, 2025 |
| Nov 3, 2025 | SRTA Strata Critical Medical, Inc. | FTax withholding Class A common stock, $0.0001 par value per share | -100,133 | $5.03 | $504k | 1,386,436 | Nov 5, 2025 |
| Sep 10, 2025 | SRTA Strata Critical Medical, Inc. | FTax withholding Class A common stock, $0.0001 par value per share | -35,348 | $4.00 | $141k | 1,305,497 | Sep 12, 2025 |
| Aug 1, 2025 | SRTA Strata Critical Medical, Inc. | AGrant or award Class A common stock, $0.0001 par value per share10b5-1 | +139,286 | $0.00 | $0 | 1,463,940 | Aug 5, 2025 |
| Aug 1, 2025 | SRTA Strata Critical Medical, Inc. | FTax withholding Class A common stock, $0.0001 par value per share10b5-1 | -76,177 | $3.99 | $304k | 1,387,763 | Aug 5, 2025 |
| Aug 4, 2025 | SRTA Strata Critical Medical, Inc. | SOpen-market sale Class A common stock, $0.0001 par value per share10b5-1 | -46,918 | $4.94 | $232k | 1,340,845 | Aug 5, 2025 |
| Jun 9, 2025 | SRTA Strata Critical Medical, Inc. | SOpen-market sale Class A common stock, $0.0001 par value per share10b5-1 | -100,000 | $4.07 | $407k | 1,360,002 | Jun 11, 2025 |
| Jun 10, 2025 | SRTA Strata Critical Medical, Inc. | FTax withholding Class A common stock, $0.0001 par value per share10b5-1 | -35,348 | $3.80 | $134k | 1,324,654 | Jun 11, 2025 |
| Mar 13, 2025 | SRTA Strata Critical Medical, Inc. | AGrant or award Class A common stock, $0.0001 par value per share | +222,857 | $0.00 | $0 | 1,620,077 | Mar 17, 2025 |
| Mar 13, 2025 | SRTA Strata Critical Medical, Inc. | FTax withholding Class A common stock, $0.0001 par value per share | -124,396 | $3.12 | $388k | 1,495,681 | Mar 17, 2025 |
| Mar 13, 2025 | SRTA Strata Critical Medical, Inc. | FTax withholding Class A common stock, $0.0001 par value per share | -35,679 | $3.12 | $111k | 1,460,002 | Mar 17, 2025 |
| Jan 6, 2025 | SRTA Strata Critical Medical, Inc. | SOpen-market sale Class A common stock, $0.0001 par value per share10b5-1 | -103,670 | $5.02 | $521k | 1,223,120 | Jan 8, 2025 |
| Jan 7, 2025 | SRTA Strata Critical Medical, Inc. | SOpen-market sale Class A common stock, $0.0001 par value per share10b5-1 | -900 | $5.00 | $4,503 | 1,222,220 | Jan 8, 2025 |
| Jan 8, 2025 | SRTA Strata Critical Medical, Inc. | MOption exercise Class A common stock, $0.0001 par value per share10b5-1 | +175,000 | $0.18 | $32k | 1,397,220 | Jan 8, 2025 |
| Jan 8, 2025 | SRTA Strata Critical Medical, Inc. | MOption exercise Stock Option (right to buy)derivative10b5-1 | -175,000 | $0.00 | $0 | 0 | Jan 8, 2025 |
| Dec 20, 2024 | SRTA Strata Critical Medical, Inc. | MOption exercise Class A common stock, $0.0001 par value per share | +25,312 | $0.18 | $4,556 | 1,326,790 | Dec 23, 2024 |
| Dec 20, 2024 | SRTA Strata Critical Medical, Inc. | MOption exercise Stock Option (right to buy)derivative | -25,312 | $0.00 | $0 | 175,000 | Dec 23, 2024 |
| Dec 9, 2024 | SRTA Strata Critical Medical, Inc. | SOpen-market sale Class A common stock, $0.0001 par value per share10b5-1 | -39,285 | $5.02 | $197k | 1,336,826 | Dec 11, 2024 |
| Dec 11, 2024 | SRTA Strata Critical Medical, Inc. | FTax withholding Class A common stock, $0.0001 par value per share10b5-1 | -35,348 | $4.72 | $167k | 1,301,478 | Dec 11, 2024 |
| Nov 29, 2024 | SRTA Strata Critical Medical, Inc. | SOpen-market sale Class A common stock, $0.0001 par value per share10b5-1 | -23,815 | $5.02 | $120k | 1,376,111 | Dec 3, 2024 |
| Nov 18, 2024 | SRTA Strata Critical Medical, Inc. | MOption exercise Class A common stock, $0.0001 par value per share | +24,688 | $0.18 | $4,444 | 1,399,926 | Nov 19, 2024 |
| Nov 18, 2024 | SRTA Strata Critical Medical, Inc. | MOption exercise Stock Option (right to buy)derivative | -24,688 | $0.18 | $4,444 | 200,312 | Nov 19, 2024 |
Questions about William A. Heyburn
Answered from the filings on this page, as of the latest one.
Is William A. Heyburn buying or selling?
In the last 12 months William A. Heyburn reported 1 open-market buy worth $76k and 0 open-market sells worth $0 on SEC Form 4; the latest was bought $76k of SRTA on Dec 9, 2025. Grants, option exercises and tax withholding are not counted.
How did William A. Heyburn's past buys perform?
Not measured yet. InsiderTell needs three past buys with six months of prices to publish a track record, and William A. Heyburn has 0.
Where does William A. Heyburn file Form 4?
William A. Heyburn has filed Form 4 at SRTA (Strata Critical Medical, Inc.) as Co-CEO and CFO. A Form 4 is required of officers, directors and holders of more than 10% of a share class within two business days of a trade.
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.