William A. Heyburn
CIK 1859732 · Co-CEO and CFO · last filed 2026-06-10
William A. Heyburn is a Co-CEO and CFO who has filed 42 SEC Form 4 insider transactions across 3 companies since 2021. The most recent filing shows the insider sold $185.9K of SRTA on Jun 10, 2026. Across all open-market trades the lifetime net is −$2.5M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $8.4M across reported positions.
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
$8.41M
3
42
-$2.52M
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| SRTA | Co-CEO and CFO | 1,548,997 | $5.43 | $8.41M | -$185.9K | 1 | 2026-06-10 |
| Strata Critical Medical, Inc. (SRTAW) Delisted | Co-CEO and CFO | 1,882,399 | $0.00 | $1.1K | $76.0K | 6 | 2026-04-27 |
| Strata Critical Medical, Inc. (BLDEW) Delisted | Chief Financial Officer | 1,463,940 | $0.18 | $262.6K | -$2.41M | 35 | 2025-08-05 |
Recent Filings
42 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-06-10 | SRTA | Sell (S) | −31,671 | -$185.9K | EDGAR |
| 2026-04-27 | Strata Critical Medical, Inc. (SRTAW) Delisted | Mixed | +243,894 | -$1.48M | EDGAR |
| 2026-03-10 | Strata Critical Medical, Inc. (SRTAW) Delisted | Tax (F) | −31,314 | -$142.2K | EDGAR |
| 2025-12-12 | Strata Critical Medical, Inc. (SRTAW) Delisted | Tax (F) | −35,348 | -$154.8K | EDGAR |
| 2025-12-10 | Strata Critical Medical, Inc. (SRTAW) Delisted | Buy (P) | +17,000 | $76.0K | EDGAR |
| 2025-11-05 | Strata Critical Medical, Inc. (SRTAW) Delisted | Mixed | +80,939 | -$503.7K | EDGAR |
| 2025-09-12 | Strata Critical Medical, Inc. (SRTAW) Delisted | Tax (F) | −35,348 | -$141.4K | EDGAR |
| 2025-08-05 | Strata Critical Medical, Inc. (BLDEW) Delisted | Mixed | +16,191 | -$535.8K | EDGAR |
| 2025-06-11 | Strata Critical Medical, Inc. (BLDEW) Delisted | Mixed | −135,348 | -$540.9K | EDGAR |
| 2025-03-17 | Strata Critical Medical, Inc. (BLDEW) Delisted | Mixed | +62,782 | -$499.4K | EDGAR |