Michael Stuart Klein
CIK 1327392 · See Remarks · last filed 2026-05-01
Michael Stuart Klein is a corporate insider who has filed 35 SEC Form 4 insider transactions across 11 companies since 2007. The most recent filing, for MPLN, was dated May 1, 2026. Across all open-market trades the lifetime net is +$12.0M, making them a net buyer over the disclosed history. Current disclosed insider exposure totals $10.0M across reported positions.
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
$9.96M
11
35
$12.02M
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| Claritev Corp (MPLN) Delisted | Director | 219,824 | $23.15 | $5.09M | $0 | 3 | 2026-05-01 |
| CXIIU | See Remarks | 350,000 | — | — | $10.50M | 1 | 2026-04-29 |
| OKLO | Director | 150,000 | $57.49 | $8.62M | -$12.17M | 2 | 2025-09-24 |
| SKIL | Director | 204,890 | $6.04 | $1.24M | $0 | 3 | 2025-07-18 |
| Skillsoft Corp. (SKIL.WS) Delisted | Director | 3,616,709 | $0.01 | $23.5K | $0 | 5 | 2023-07-24 |
| Claritev Corp (MPLN.WS) Delisted | Director | 22,994,079 | $0.00 | $69.0K | $14.79M | 7 | 2023-04-28 |
| Oklo Inc. (ALCC) Delisted | Chairman | 1,435,500 | $18.23 | $26.17M | $0 | 1 | 2021-07-14 |
| Churchill Capital Corp V (CCV.U) Delisted | 10%+ Owner | — | $10.38 | — | $0 | 1 | 2020-12-22 |
| Hall of Fame Resort & Entertainment Co (HOFVW) Delisted | Director | 1,078,984 | $0.00 | $1.9K | -$1.10M | 2 | 2020-07-24 |
| IHS | Director | 12,316 | $8.36 | $103.0K | $0 | 6 | 2012-12-04 |
| CITIGROUP INC (CpM) Delisted | Co-CEO Citi Markets & Banking | 1,295,604 | — | — | $0 | 4 | 2008-01-24 |
Recent Filings
35 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-05-01 | Claritev Corp (MPLN) Delisted | Grant (A) | +8,977 | $0 | EDGAR |
| 2026-04-29 | CXIIU | Buy (P) | +1,050,000 | $10.50M | EDGAR |
| 2025-09-24 | OKLO | Sell (S) | −50,000 | -$6.69M | EDGAR |
| 2025-07-18 | SKIL | Mixed | +20,306 | $0 | EDGAR |
| 2025-06-25 | OKLO | Sell (S) | −100,000 | -$5.49M | EDGAR |
| 2025-05-02 | Claritev Corp (MPLN) Delisted | Grant (A) | +7,356 | $0 | EDGAR |
| 2024-07-23 | SKIL | Grant (A) | — | $0 | EDGAR |
| 2024-07-22 | SKIL | Exer (M) | +3,750 | $0 | EDGAR |
| 2024-04-26 | Claritev Corp (MPLN) Delisted | Grant (A) | +172,413 | $0 | EDGAR |
| 2023-07-24 | Skillsoft Corp. (SKIL.WS) Delisted | Grant (A) | — | $0 | EDGAR |