Mark Mason insider trades: Citigroup (C) stock sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Mark reports to the SEC
Open-market buys and sales
6 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Feb 20, 2026 | C | ↓ Sell | 3,627 | $114.71 | $416K | Direct | Feb 24, 2026 (4d) |
| Feb 14, 2025 | C | ↓ Sell | 58,465 | $83.21 | $4.9M | Direct | Feb 18, 2025 (4d) |
| May 7, 2021 | C | ↓ Sell | 15,366 | $74.03 | $1.1M | Direct | May 7, 2021 (0d) |
| Dec 19, 2011 | PRI | ↓ Sell | 8,081,542 | $21.68 | $175.2M | By Citigroup Insurance Holding Corporati | Dec 20, 2011 (1d) |
| Apr 20, 2011 | PRI | ↓ Sell | 12,000,000 | $21.73 | $260.7M | By Citigroup Insurance Holding Corporati | Apr 21, 2011 (1d) |
| Apr 7, 2010 | PRI | ↓ Sell | 24,564,000 | $13.95 | $342.7M | By Citigroup Insurance Holding Corporati | Apr 8, 2010 (1d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other C insiders
Open-market trades in the last 12 months
About Mark Mason's insider trades
Mark Mason is Chief Financial Officer at Citigroup (C). Since Apr 7, 2010, Mark has reported no open-market purchases and 6 sales worth $785.0M on SEC Form 4. In the last 12 months: 1 sale ($416K).
Their filings also include grants and awards (29 filings), other transactions (10 filings), shares withheld for taxes (7 filings), gifts (2 filings). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every C insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.