Michael Stuart Klein serves as Executive at CITIGROUP INC, where they oversee executive responsibilities. Since joining the company, Michael Stuart Klein has executed 34 insider transactions totaling $32.5M, demonstrating a bullish approach to their equity position. Their most recent transaction on Dec 18, 2025 involved purchasing 500,000 shares valued at $5.0M.
Michael Stuart Klein currently holds 14,300,000 shares of CITIGROUP INC (C), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, Michael Stuart Klein has been a net buyer of C stock. They have purchased $24.8M and sold $7.8M worth of shares.
Michael Stuart Klein's most recent insider trade was on Dec 18, 2025, when they purchased 500,000 shares at $10.00 per share.
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| $135.20 |
| Discretionary |
| Sep 22, 2025 | OKLO | $5.3M | Sale | 40,000 | $133.40 | Discretionary |
| Jul 17, 2025 | SKIL | $0 | Option Exercise | 20,306 | $N/A | Discretionary |
| Jul 18, 2024 | SKIL | $0 | Option Exercise | 3,750 | $N/A | Discretionary |
| May 9, 2024 | OKLO | $0 | Option Exercise | 12,500,000 | $N/A | Discretionary |
| Apr 24, 2024 | MPLN | $0 | Award | 172,413 | $N/A | Discretionary |
| Jun 23, 2023 | SKIL | $0 | Option Exercise | 35,398 | $N/A | Discretionary |
| Apr 26, 2023 | MPLN | $0 | Award | 106,382 | $N/A | Discretionary |
| Jun 23, 2022 | SKIL | $0 | Option Exercise | 21,621 | $N/A | Discretionary |
| Apr 26, 2022 | MPLN | $0 | Award | 22,271 | $N/A | Discretionary |
| May 27, 2021 | MPLN | $0 | Award | 11,723 | $N/A | Discretionary |
| Dec 23, 2020 | MPLN | $0 | Award | 7,293 | $N/A | Discretionary |
| Nov 17, 2020 | MPLN | $4.9M | Purchase | 700,000 | $7.04 | Discretionary |
| Nov 16, 2020 | MPLN | $5.0M | Purchase | 700,000 | $7.11 | Discretionary |
| Nov 13, 2020 | MPLN | $4.9M | Purchase | 741,000 | $6.60 | Discretionary |
| Oct 8, 2020 | CCXX | $0 | Option Exercise | 27,500,000 | $N/A | Discretionary |
| Oct 7, 2020 | CCXX | $2.7M | Purchase | 261,711 | $10.30 | Discretionary |
| Oct 6, 2020 | CCXX | $2.3M | Purchase | 220,000 | $10.31 | Discretionary |
| Jul 22, 2020 | HOFV | $1.1M | Sale | 90,287 | $12.18 | Discretionary |
| Jul 1, 2020 | HOFV | $0 | Award | 509,669 | $N/A | Discretionary |
| Jul 1, 2020 | HOFV | $0 | Award | 1,078,984 | $N/A | Discretionary |
| Dec 1, 2012 | IHS | $0 | Award | 1,621 | $N/A | Discretionary |
| Dec 1, 2011 | IHS | $0 | Award | 1,699 | $N/A | Discretionary |
| Dec 1, 2010 | IHS | $0 | Award | 2,062 | $N/A | Discretionary |
| Dec 1, 2009 | IHS | $0 | Award | 2,989 | $N/A | Discretionary |
| Jan 15, 2009 | IHS | $0 | Award | 1,117 | $N/A | Discretionary |
| Dec 1, 2008 | IHS | $0 | Award | 2,828 | $N/A | Discretionary |
| Jan 22, 2008 | C | $0 | Award | 524,117 | $N/A | Discretionary |
| Jul 17, 2007 | C | $103.3K | Payment | 1,980 | $52.19 | Discretionary |