Thurmond Mark C.
SEC insider (Form 3/4/5 filer). CIK 0001651579. Co-Chief Executive Officer at Tenable Holdings, Inc. (TENB). 94 reported Form 4/5 transactions since Sep 2024; latest on Aug 24, 2026. Located in COLUMBIA, MD.
Companies Thurmond Mark C. has filed insider reports for
- Tenable Holdings, Inc. (TENB): Director, Officer, Co-Chief Executive Officer
Thurmond Mark C.
CIK: 0001651579
Transaction Breakdown
High conviction signal
Position reduction
Derivative conversions
Compensation grants
Gifts, tax withholding, conversions, dispositions to the issuer and other codes
Companies & Roles (1)
Tenable Holdings, Inc.
Discretionary Trading P&L
Holdings
Transaction History (94 total)
- Aug 24, 2026TENB
Tenable Holdings, Inc.
Tax PaymentDirect2.9K shares at avg. $33.94$100K - Aug 24, 2026TENB
Tenable Holdings, Inc.
ExerciseDirect7.8K shares- - Aug 24, 2026TENB
Tenable Holdings, Inc.
ExerciseDirect2.3K shares- - Aug 24, 2026TENB
Tenable Holdings, Inc.
ExerciseDirect6.1K shares- - Aug 24, 2026TENB
Tenable Holdings, Inc.
ExerciseDirect3.7K shares- - Aug 24, 2026TENB
Tenable Holdings, Inc.
Tax PaymentDirect1.8K shares at avg. $33.94$61K - Aug 24, 2026TENB
Tenable Holdings, Inc.
ExerciseDirect1.2K shares- - Aug 24, 2026TENB
Tenable Holdings, Inc.
Tax PaymentDirect562 shares at avg. $33.94$19K - Aug 24, 2026TENB
Tenable Holdings, Inc.
Tax PaymentDirect1.1K shares at avg. $33.94$37K - Aug 24, 2026TENB
Tenable Holdings, Inc.
Tax PaymentDirect3.8K shares at avg. $33.94$127K
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| Aug 24, 2026 | TENB Tenable Holdings, Inc. | Tax Payment | 2,947 | $33.94 | $100,021 | Direct |
| Aug 24, 2026 | TENB Tenable Holdings, Inc. | Exercise | 7,764 | - | $0 | Direct |
| Aug 24, 2026 | TENB Tenable Holdings, Inc. | Exercise | 2,267 | - | $0 | Direct |
| Aug 24, 2026 | TENB Tenable Holdings, Inc. | Exercise | 6,095 | - | $0 | Direct |
| Aug 24, 2026 | TENB Tenable Holdings, Inc. | Exercise | 3,713 | - | $0 | Direct |
| Aug 24, 2026 | TENB Tenable Holdings, Inc. | Tax Payment | 1,796 | $33.94 | $60,956 | Direct |
| Aug 24, 2026 | TENB Tenable Holdings, Inc. | Exercise | 1,162 | - | $0 | Direct |
| Aug 24, 2026 | TENB Tenable Holdings, Inc. | Tax Payment | 562 | $33.94 | $19,074 | Direct |
| Aug 24, 2026 | TENB Tenable Holdings, Inc. | Tax Payment | 1,097 | $33.94 | $37,232 | Direct |
| Aug 24, 2026 | TENB Tenable Holdings, Inc. | Tax Payment | 3,754 | $33.94 | $127,411 | Direct |
1-10 of 94 transactions