Steven S. Williamson
CIK 1478582 · PRESIDENT AND CEO · last filed 2025-09-03
Steven S. Williamson is a PRESIDENT AND CEO who has filed 42 SEC Form 4 insider transactions across 3 companies since 2009. The most recent filing, for LUNG, was dated Jan 22, 2026. Across all open-market trades the lifetime net is −$1.5M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $555.2K 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.
$555.2K
3
42
-$1.52M
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| LUNG | PRESIDENT AND CEO | 363,497 | $1.25 | $454.4K | -$146.8K | 5 | 2025-09-03 |
| OM | Chief Commercial Officer | 21,356 | $4.72 | $100.8K | -$671.3K | 15 | 2024-02-16 |
| HOLOGIC INC (HOLX) Delisted | SVP, GYN Surgical | 41,721 | $76.01 | $3.17M | -$701.5K | 12 | 2012-03-08 |
Recent Filings
42 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-01-22 | LUNG | Notice (144) | −48,892 | -$95.3K | EDGAR |
| 2026-01-15 | LUNG | Notice (144) | −15,892 | -$31.0K | EDGAR |
| 2026-01-14 | LUNG | Notice (144) | −31,082 | -$62.1K | EDGAR |
| 2025-09-03 | LUNG | Sell (S) | −9,648 | -$15.4K | EDGAR |
| 2025-06-04 | LUNG | Sell (S) | −9,923 | -$31.1K | EDGAR |
| 2025-03-05 | LUNG | Mixed | +154,007 | -$197.7K | EDGAR |
| 2024-08-22 | LUNG | Buy (P) | +14,245 | $97.4K | EDGAR |
| 2024-03-19 | LUNG | Grant (A) | +205,286 | $0 | EDGAR |
| 2024-02-16 | OM | Sell (S) | −2,500 | -$8.9K | EDGAR |
| 2024-02-15 | OM | Notice (144) | −2,500 | -$8.9K | EDGAR |
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.