Diamond Matthew K (CIK 1779155) reported 5 SEC Form 4 insider transactions across 2 companies over the past 18 months (most recent 2026-06-01). Recent activity: Sell STRR (763 shares), Buy STRR (3,993 shares), Sell STRR (551 shares), Sell HSON (868 shares), Sell HSON (554 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-06-01 | Star Equity Holdings, Inc. (STRR) | Chief Accounting Officer | Sell | 763 | $8,866 |
| 2026-03-23 | Star Equity Holdings, Inc. (STRR) | Chief Accounting Officer | Buy | 3,993 | $0 |
| 2026-03-23 | Star Equity Holdings, Inc. (STRR) | Chief Accounting Officer | Sell | 551 | $5,466 |
| 2025-05-30 | Hudson Global, Inc. (HSON) | Chief Financial Officer | Sell | 868 | $7,517 |
| 2025-03-10 | Hudson Global, Inc. (HSON) | Chief Financial Officer | Sell | 554 | $5,651 |
Source: SEC Form 4 filings · as of 2026-06-01