Mark C. Thurmond

Co-Chief Executive Officer

Mark C. Thurmond (Co-Chief Executive Officer) filed 6 Form 4 reports in the past 24 months (0 purchases, 6 sales), most often in TENB. The largest single filing was $862K of TENB (28,500 sh × $30.25, as filed), executed Aug 25 2025.

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Return, ttmiAverage return per filing, trailing twelve months

–

no purchases on file

Delay-adjustediThe same average, entered at disclosure dates

–

returns measure stock purchases only

Filings, ttm

0 buys · 6 sells

Median delay

–

execution → disclosure

Volume, ttmiDollar value disclosed in the trailing twelve months

$1.8M

shares × price, as filed

Last traded

Aug 25 2025

Filed Aug 26 2025

Open performance→

Volume by month

Buys $0 Sells $1.8M

Shares × price, as filed · by filing month · past 24 months

Sectors filed on

Not on file 6 filings

Sector per market data · by filing · past 24 months

Most traded names

TENB TENB TENB · 0 buys · 6 sells 6 filings

Recent filings

TENBSALE Tenable Holdings, Inc. View filing → $862K
28,500 sh × $30.25
Exec Aug 25 2025
Filed Aug 26 2025 · 5:30 PM ET TENBSALE Tenable Holdings, Inc. View filing → $178K
5,577 sh × $31.98
Exec May 23 2025
Filed May 27 2025 · 5:30 PM ET TENBSALE Tenable Holdings, Inc. View filing → $415K
10,862 sh across 2 lots
Exec Feb 26 2025
Filed Feb 28 2025 · 5:30 PM ET TENBSALE Tenable Holdings, Inc. View filing → $139K
3,606 sh × $38.48
Exec Feb 25 2025
Filed Feb 26 2025 · 5:30 PM ET TENBSALE Tenable Holdings, Inc. View filing → $108K
2,537 sh × $42.56
Exec Nov 26 2024
Filed Nov 27 2024 · 5:30 PM ET TENBSALE Tenable Holdings, Inc. View filing → $100K
2,343 sh × $42.74
Exec Nov 25 2024
Filed Nov 26 2024 · 5:30 PM ET