Insider · CIK 0001786065
Stephen M Mason
Files at CAH (CARDINAL HEALTH INC). First filing Aug 19, 2025, latest Aug 20, 2026.
Stephen M Mason files SEC Form 4 as CEO at CAH (CARDINAL HEALTH INC). Since Aug 19, 2025, Stephen M Mason has reported 0 open-market buys worth $0 and 2 open-market sells worth $14M, the latest filed on Aug 20, 2026.
A track record needs three past buys with six months of prices behind them; Stephen M Mason has 0, so none is measured yet.
The newest scored trade: sold $8.3M of CAH on Aug 18, 2026, filed Aug 20, 2026, scored 85 (strong). In the last 12 months: 0 buys worth $0 and 1 sell worth $8.3M.
Where the trades landed
Last year at the company this insider has traded most, with each buy and sell on the bar it happened.
CAH: CARDINAL HEALTH INC
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™
Signals
This insider’s open-market buys and sells, scored.
| Score | Company | Value | Holdings | Price context | Filed |
|---|---|---|---|---|---|
| 85Strong | CARDINAL HEALTH INC | $8.3M 35,000 shares | -66% | +63% from low-2% from high | |
| 85Strong | CARDINAL HEALTH INC | $6.2M 41,575 shares | -61% | +40% from low-11% from high |
Planned sales
Form 144 notices this insider filed before selling restricted or control stock, newest first.
| Filed | Company | Shares | Value | Sale date | Past 3 months |
|---|---|---|---|---|---|
| Aug 18, 2026 | CAH Cardinal Health, Inc | 35,000 0.01% of outstanding | $8.3M | Aug 18, 2026 | none |
| Aug 19, 2025 | CAH CARDINAL HEALTH INC | 41,575 0.02% of outstanding | $6.2M | Aug 19, 2025 | none |
Transactions
Every row this insider has filed, 15 in all, newest first.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Aug 18, 2026 | CAH CARDINAL HEALTH INC | SOpen-market sale Common Shares | -3,100 | $234.59 | $727k | 49,961 | Aug 20, 2026 |
| Aug 18, 2026 | CAH CARDINAL HEALTH INC | SOpen-market sale Common Shares | -8,195 | $235.62 | $1.9M | 41,766 | Aug 20, 2026 |
| Aug 18, 2026 | CAH CARDINAL HEALTH INC | SOpen-market sale Common Shares | -10,876 | $236.50 | $2.6M | 30,890 | Aug 20, 2026 |
| Aug 18, 2026 | CAH CARDINAL HEALTH INC | SOpen-market sale Common Shares | -12,829 | $237.26 | $3.0M | 18,061 | Aug 20, 2026 |
| Aug 15, 2026 | CAH CARDINAL HEALTH INC | AGrant or award Common Shares | +5,868 | $0.00 | $0 | 78,350 | Aug 18, 2026 |
| Aug 15, 2026 | CAH CARDINAL HEALTH INC | FTax withholding Common Shares | -25,289 | $235.17 | $5.9M | 53,061 | Aug 18, 2026 |
| Aug 4, 2026 | CAH CARDINAL HEALTH INC | AGrant or award Common Shares | +46,992 | $0.00 | $0 | 72,482 | Aug 6, 2026 |
| Dec 1, 2025 | CAH CARDINAL HEALTH INC | FTax withholding Common Shares | -595 | $212.26 | $126k | 25,490 | Dec 2, 2025 |
| Aug 15, 2025 | CAH CARDINAL HEALTH INC | AGrant or award Common Shares | +8,957 | $0.00 | $0 | 98,471 | Aug 19, 2025 |
| Aug 15, 2025 | CAH CARDINAL HEALTH INC | FTax withholding Common Shares | -30,811 | $150.22 | $4.6M | 67,660 | Aug 19, 2025 |
| Aug 19, 2025 | CAH CARDINAL HEALTH INC | SOpen-market sale Common Shares | -2,997 | $147.87 | $443k | 64,663 | Aug 19, 2025 |
| Aug 19, 2025 | CAH CARDINAL HEALTH INC | SOpen-market sale Common Shares | -34,411 | $148.83 | $5.1M | 30,252 | Aug 19, 2025 |
| Aug 19, 2025 | CAH CARDINAL HEALTH INC | SOpen-market sale Common Shares | -4,167 | $149.39 | $623k | 26,085 | Aug 19, 2025 |
| Aug 12, 2025 | CAH CARDINAL HEALTH INC | AGrant or award Common Shares | +54,537 | $0.00 | $0 | 89,514 | Aug 12, 2025 |
| Jun 30, 2025 | CAH CARDINAL HEALTH INC | FTax withholding Common Shares | -5,694 | $167.18 | $952k | 34,977 | Jun 30, 2025 |
Questions about Stephen M Mason
Answered from the filings on this page, as of the latest one.
Is Stephen M Mason buying or selling?
In the last 12 months Stephen M Mason reported 0 open-market buys worth $0 and 1 open-market sell worth $8.3M on SEC Form 4; the latest was sold $8.3M of CAH on Aug 18, 2026. Grants, option exercises and tax withholding are not counted.
How did Stephen M Mason's past buys perform?
Not measured yet. InsiderTell needs three past buys with six months of prices to publish a track record, and Stephen M Mason has 0.
Where does Stephen M Mason file Form 4?
Stephen M Mason has filed Form 4 at CAH (CARDINAL HEALTH INC) as CEO, GMPD Segment. A Form 4 is required of officers, directors and holders of more than 10% of a share class within two business days of a trade.
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.