Robert W. McMahon
CIK 1608730 · SVP & Chief Financial Officer · last filed 2026-06-05
Robert W. McMahon is a SVP & Chief Financial Officer who has filed 58 SEC Form 4 insider transactions across 4 companies since 2014. The most recent filing, for OSUR, was dated Jun 5, 2026. Current disclosed insider exposure totals $26.6M 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.
$26.63M
4
58
$0
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| OSUR | Director | 123,137 | $4.05 | $498.7K | $0 | 6 | 2026-06-05 |
| WST | SVP & Chief Financial Officer | 4,230 | $354.07 | $1.50M | $0 | 3 | 2026-03-03 |
| A | Sr. VP and CFO | 168,753 | $145.97 | $24.63M | $0 | 31 | 2025-05-27 |
| HOLOGIC INC (HOLX) Delisted | Chief Financial Officer | 112,244 | $76.01 | $8.53M | $0 | 15 | 2018-08-03 |
Recent Filings
58 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-06-05 | OSUR | Grant (A) | +46,106 | $0 | EDGAR |
| 2026-05-14 | OSUR | Tax (F) | −22,888 | -$69.1K | EDGAR |
| 2026-03-03 | WST | Grant (A) | — | $0 | EDGAR |
| 2026-02-12 | WST | Mixed | +2,980 | -$307.7K | EDGAR |
| 2025-09-09 | A | Notice (144) | −5,781 | -$729.6K | EDGAR |
| 2025-09-04 | A | Notice (144) | −15,303 | -$1.97M | EDGAR |
| 2025-08-29 | A | Notice (144) | −28,081 | -$3.51M | EDGAR |
| 2025-08-12 | WST | Grant (A) | — | $0 | EDGAR |
| 2025-08-04 | OSUR | Tax (F) | −7,317 | -$23.5K | EDGAR |
| 2025-05-27 | A | Tax (F) | −3,499 | -$383.8K | 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.