Mark Mason is CFO at CITIGROUP INC (C). They have made 6 open-market trades across 2 companies since 2010, most recently 2026-02-20.
CIK 0001487290
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
0 open-market purchases, against 6 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| C | 235,788 | $29.3M |
| PRI | 4,456 | $1.3M |
| MSFT | 1,675 | $886K |
| Total | $31.4M |
Shares reported on the most recent Form 4, priced at the 2026-02-24 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| C | SELL | 2026-02-20 | 2026-02-24 | $114.71 | $416K | -4.3% | +1.0% | +13.9% |
| C | SELL | 2025-02-14 | 2025-02-18 | $83.21 | $9.7M | -4.9% | -14.6% | -9.4% |
| C | SELL | 2021-05-07 | 2021-05-07 | $74.03 | $2.3M | +1.5% | +5.2% | -7.5% |
| PRI | SELL | 2011-12-19 | 2011-12-20 | $21.68 | $175.2M | -7.8% | +0.3% | +0.3% |
| PRI | SELL | 2011-04-20 | 2011-04-21 | $21.73 | $260.8M | -7.8% | +0.3% | +0.3% |
| PRI | SELL | 2010-04-07 | 2010-04-08 | $13.95 | $342.7M | -7.8% | +0.3% | +0.3% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.