Mason Stephen M
Officer · CAH
As of 2026-09-16, Mason Stephen M has 15 Form 4 transactions on record across 1 company — 8 in the trailing 12 months.
Everything this person has disclosed to the SEC on Form 4 — across every company they file for — reconstructed from the public record. A filing history, not a tip sheet.
Pattern in the record: open-market sales filed in August in multiple years since 2025 — a recurring calendar cadence, more consistent with scheduled activity than a one-off decision.
Reconstructed holdings
- Direct $4.2M
- Indirect $0
| CAH | direct | 18,061 sh | $4.2M |
Reconstructed from this person's own Form 4 filings — the total each filing reported owning afterward, priced at the close on the as-of date shown. A filed position can lag the real one.
Direct and indirect holdings (e.g. through a trust or fund) are tagged separately, as filed.
Trades by company
Filing ledger
| Date | Company | Action | Shares @ price | Value | Ownership Δ | Owned after | Filing |
|---|---|---|---|---|---|---|---|
| 2026-08-18 | CAH | Sale | 12,829 @ $237.26 | $3.0M | −41.5% of holding | 18,061 | Form 4 |
| 2026-08-18 | CAH | Sale | 10,876 @ $236.50 | $2.6M | −26.0% of holding | 30,890 | Form 4 |
| 2026-08-18 | CAH | Sale | 8,195 @ $235.62 | $1.9M | −16.4% of holding | 41,766 | Form 4 |
| 2026-08-18 | CAH | Sale | 3,100 @ $234.59 | $727K | −5.8% of holding | 49,961 | Form 4 |
| 2025-08-19 | CAH | Sale | 34,411 @ $148.83 | $5.1M | −53.2% of holding | 30,252 | Form 4 |
| 2025-08-19 | CAH | Sale | 4,167 @ $149.39 | $623K | −13.8% of holding | 26,085 | Form 4 |
| 2025-08-19 | CAH | Sale | 2,997 @ $147.87 | $443K | −4.4% of holding | 64,663 | Form 4 |
8 award / exercise / gift records — not counted as purchases
| Date | Company | Action | Shares | Owned after | Filing |
|---|---|---|---|---|---|
| 2026-08-15 | CAH | Withheld for tax | 25,289 | 53,061 | Form 4 |
| 2026-08-15 | CAH | Award / grant | 5,868 | 78,350 | Form 4 |
| 2026-08-04 | CAH | Award / grant | 46,992 | 72,482 | Form 4 |
| 2025-12-01 | CAH | Withheld for tax | 595 | 25,490 | Form 4 |
| 2025-08-15 | CAH | Withheld for tax | 30,811 | 67,660 | Form 4 |
| 2025-08-15 | CAH | Award / grant | 8,957 | 98,471 | Form 4 |
| 2025-08-12 | CAH | Award / grant | 54,537 | 89,514 | Form 4 |
| 2025-06-30 | CAH | Withheld for tax | 5,694 | 34,977 | Form 4 |
Source: SEC Form 4 filings. Each row links to its original filing.
Research tool, not investment advice — historical frequencies, not recommendations. A product of Marovel Technologies LLC. Full terms.