Insider · SEC Forms 3, 4, 5
CIK 1494730
All transactions
Every Form 4 row this person reported, newest first
Insider · SEC Forms 3, 4, 5
Every Form 4 row this person reported, newest first
Thurmond Mark C. (CIK 1651579) reported 69 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-08-25). Recent activity: Sell TENB (1,796 shares), Sell TENB (562 shares), Buy TENB (2,267 shares), Sell TENB (1,097 shares), Buy TENB (6,095 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-25 | Tenable Holdings, Inc. (TENB) | Co-Chief Executive Officer | Sell | 1,796 | $60,956 |
| 2026-08-25 | Tenable Holdings, Inc. (TENB) | Co-Chief Executive Officer | Sell | 562 | $19,074 |
| 2026-08-25 | Tenable Holdings, Inc. (TENB) | Co-Chief Executive Officer | Buy | 2,267 | $0 |
| 2026-08-25 | Tenable Holdings, Inc. (TENB) | Co-Chief Executive Officer | Sell | 1,097 | $37,232 |
| 2026-08-25 | Tenable Holdings, Inc. (TENB) | Co-Chief Executive Officer | Buy | 6,095 | $0 |
| 2026-08-25 | Tenable Holdings, Inc. (TENB) | Co-Chief Executive Officer | Sell | 2,947 | $100,021 |
| 2026-08-25 | Tenable Holdings, Inc. (TENB) | Co-Chief Executive Officer | Buy | 3,713 | $0 |
| 2026-08-25 | Tenable Holdings, Inc. (TENB) | Co-Chief Executive Officer | Buy | 1,162 | $0 |
| 2026-08-25 | Tenable Holdings, Inc. (TENB) | Co-Chief Executive Officer | Buy | 7,764 | $0 |
| 2026-08-25 | Tenable Holdings, Inc. (TENB) | Co-Chief Executive Officer | Sell | 3,754 | $127,411 |
| 2026-08-25 | Tenable Holdings, Inc. (TENB) | Co-Chief Executive Officer | Buy | 4,368 | $0 |
| 2026-08-25 | Tenable Holdings, Inc. (TENB) | Co-Chief Executive Officer | Sell | 2,112 | $71,681 |
| 2026-05-26 | Tenable Holdings, Inc. (TENB) | Co-Chief Executive Officer | Buy | 1,162 | $0 |
| 2026-05-26 | Tenable Holdings, Inc. (TENB) | Co-Chief Executive Officer | Sell | 562 | $14,303 |
| 2026-05-26 | Tenable Holdings, Inc. (TENB) | Co-Chief Executive Officer | Buy | 2,267 | $0 |
| 2026-05-26 | Tenable Holdings, Inc. (TENB) | Co-Chief Executive Officer | Sell | 1,097 | $27,919 |
| 2026-05-26 | Tenable Holdings, Inc. (TENB) | Co-Chief Executive Officer | Buy | 6,095 | $0 |
| 2026-05-26 | Tenable Holdings, Inc. (TENB) | Co-Chief Executive Officer | Sell | 2,947 | $75,001 |
| 2026-05-26 | Tenable Holdings, Inc. (TENB) | Co-Chief Executive Officer | Buy | 3,713 | $0 |
| 2026-05-26 | Tenable Holdings, Inc. (TENB) | Co-Chief Executive Officer | Sell | 1,796 | $45,708 |
| 2026-05-26 | Tenable Holdings, Inc. (TENB) | Co-Chief Executive Officer | Buy | 7,764 | $0 |
| 2026-05-26 | Tenable Holdings, Inc. (TENB) | Co-Chief Executive Officer | Sell | 3,754 | $95,539 |
| 2026-05-26 | Tenable Holdings, Inc. (TENB) | Co-Chief Executive Officer | Buy | 4,368 | $0 |
| 2026-05-26 | Tenable Holdings, Inc. (TENB) | Co-Chief Executive Officer | Sell | 2,112 | $53,750 |
| 2026-02-27 | Tenable Holdings, Inc. (TENB) | Co-Chief Executive Officer | Buy | 24,381 | $0 |
Source: SEC Form 4 filings · as of 2026-08-25