Klein Mark D (CIK 1322402) reported 12 SEC Form 4 insider transactions across 2 companies over the past 18 months (most recent 2026-08-10). Recent activity: Buy NSLR (26,040 shares), Buy SSSS (350,000 shares), Sell SSSS (293,265 shares), Buy SSSS (2,500 shares), Buy SSSS (2,500 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-10 | Neostellar Capital Corp. (NSLR) | Chairman, CEO and President | Buy | 26,040 | $249,984 |
| 2026-06-16 | SURO CAPITAL CORP. (SSSS) | Chairman, CEO and President | Buy | 350,000 | $0 |
| 2026-06-16 | SURO CAPITAL CORP. (SSSS) | Chairman, CEO and President | Sell | 293,265 | $4.0M |
| 2026-04-22 | SURO CAPITAL CORP. (SSSS) | Chairman, CEO and President | Buy | 2,500 | $32,700 |
| 2026-04-22 | SURO CAPITAL CORP. (SSSS) | Chairman, CEO and President | Buy | 2,500 | $33,125 |
| 2025-12-16 | SURO CAPITAL CORP. (SSSS) | Chairman, CEO and President | Sell | 17,017 | $163,193 |
| 2025-12-16 | SURO CAPITAL CORP. (SSSS) | Chairman, CEO and President | Sell | 17,017 | $157,237 |
| 2025-11-25 | SURO CAPITAL CORP. (SSSS) | Chairman, CEO and President | Buy | 174,465 | $0 |
| 2025-08-12 | SURO CAPITAL CORP. (SSSS) | Chairman, CEO and President | Buy | 4,571 | $39,722 |
| 2025-08-12 | SURO CAPITAL CORP. (SSSS) | Chairman, CEO and President | Buy | 10,000 | $84,500 |
| 2025-05-19 | SURO CAPITAL CORP. (SSSS) | Chairman, CEO and President | Buy | 300,000 | $0 |
| 2025-05-09 | SURO CAPITAL CORP. (SSSS) | Chairman, CEO and President | Buy | 16,500 | $86,790 |
Source: SEC Form 4 filings · as of 2026-08-10