Stephen M Mason
CIK 1786065 · CEO, GMPD Segment · last filed 2025-12-02
Stephen M Mason is a CEO, GMPD Segment who has filed 19 SEC Form 4 insider transactions across 1 company since 2020. The most recent filing shows the insider had shares withheld for taxes covering $126.3K of CAH on Dec 2, 2025. Across all open-market trades the lifetime net is −$19.5M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $6.0M 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.
$5.95M
1
19
-$19.55M
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| CAH | CEO, GMPD Segment | 25,490 | $233.55 | $5.95M | -$19.55M | 15 | 2025-12-02 |
Recent Filings
19 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2025-12-02 | CAH | Tax (F) | −595 | -$126.3K | EDGAR |
| 2025-08-19 | CAH | Notice (144) | −41,575 | -$6.19M | EDGAR |
| 2025-08-19 | CAH | Mixed | −63,429 | -$10.82M | EDGAR |
| 2025-08-12 | CAH | Grant (A) | +54,537 | $0 | EDGAR |
| 2025-06-30 | CAH | Tax (F) | −5,694 | -$951.9K | EDGAR |
| 2024-08-19 | CAH | Notice (144) | −46,998 | -$5.13M | EDGAR |
| 2024-08-19 | CAH | Mixed | −42,642 | -$6.29M | EDGAR |
| 2024-08-14 | CAH | Grant (A) | +45,958 | $0 | EDGAR |
| 2023-08-17 | CAH | Notice (144) | −37,500 | -$3.27M | EDGAR |
| 2023-08-17 | CAH | Notice (144) | −37,500 | -$3.27M | 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.