Steven S. Williamson
CIK 1478582 · PRESIDENT AND CEO · last filed 2025-09-03
"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.
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Disclosed Exposure
$555.2K
Companies
3
Total Filings
42
Lifetime Open-Market Net
-$1.52M
Holdings By Company
Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
| 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 · Page 2 of 5
42 filingsInsider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2024-01-17 | OM | Mixed | +216,908 | -$4.3K | EDGAR |
| 2024-01-16 | OM | Notice (144) | −996 | -$4.3K | EDGAR |
| 2024-01-08 | OM | Sell (S) | −7,055 | -$38.7K | EDGAR |
| 2024-01-08 | OM | Notice (144) | −7,055 | -$38.7K | EDGAR |
| 2023-11-17 | OM | Sell (S) | −3,584 | -$17.1K | EDGAR |
| 2023-11-16 | OM | Notice (144) | −3,584 | -$17.1K | EDGAR |
| 2023-08-17 | OM | Sell (S) | −635 | -$9.6K | EDGAR |
| 2023-08-16 | OM | Notice (144) | −635 | -$9.6K | EDGAR |
| 2023-05-16 | OM | Sell (S) | −681 | -$13.6K | EDGAR |
| 2023-05-16 | OM | Notice (144) | −681 | -$13.6K | EDGAR |
Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
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.
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.