Brown Matthew Charles (CIK 1766979) reported 10 SEC Form 4 insider transactions across 2 companies over the past 18 months (most recent 2026-05-26). Recent activity: Buy TENB (14,544 shares), Sell TENB (5,219 shares), Buy TENB (12,000 shares), Buy TENB (14,544 shares), Sell TENB (5,269 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-05-26 | Tenable Holdings, Inc. (TENB) | Chief Financial Officer | Buy | 14,544 | $0 |
| 2026-05-26 | Tenable Holdings, Inc. (TENB) | Chief Financial Officer | Sell | 5,219 | $131,362 |
| 2026-05-05 | Tenable Holdings, Inc. (TENB) | Chief Financial Officer | Buy | 12,000 | $258,480 |
| 2026-02-25 | Tenable Holdings, Inc. (TENB) | Chief Financial Officer | Buy | 14,544 | $0 |
| 2026-02-25 | Tenable Holdings, Inc. (TENB) | Chief Financial Officer | Sell | 5,269 | $92,471 |
| 2025-11-25 | Tenable Holdings, Inc. (TENB) | Chief Financial Officer | Buy | 14,544 | $0 |
| 2025-11-25 | Tenable Holdings, Inc. (TENB) | Chief Financial Officer | Sell | 5,278 | $137,545 |
| 2025-03-26 | Altair Engineering Inc. (ALTR) | Chief Financial Officer | Sell | 66,125 | $7.5M |
| 2025-03-06 | Altair Engineering Inc. (ALTR) | Chief Financial Officer | Sell | 2,527 | $0 |
| 2025-03-05 | Altair Engineering Inc. (ALTR) | Chief Financial Officer | Sell | 742 | $82,696 |
Source: SEC Form 4 filings · as of 2026-05-26