Mark C. Thurmond
CIK 1651579 · Co-Chief Executive Officer · last filed 2026-05-26
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
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Disclosed Exposure
$4.58M
Companies
2
Total Filings
54
Lifetime Open-Market Net
-$9.12M
Holdings By Company
Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| TENB | Co-Chief Executive Officer | 170,857 | $26.80 | $4.58M | -$9.12M | 49 | 2026-05-26 |
| QLIK TECHNOLOGIES INC (QLIK) Delisted | EVP, Worldwide Sales and Serv. | 0 | — | — | $0 | 5 | 2016-08-22 |
Recent Filings · Page 2 of 6
54 filingsForm 4 transactions across all companies, newest first.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2025-02-20 | TENB | Mixed | +3,220 | -$53.0K | EDGAR |
| 2025-02-18 | TENB | Grant (A) | — | $0 | EDGAR |
| 2024-12-02 | TENB | Sell (S) | −939 | -$40.3K | EDGAR |
| 2024-11-27 | TENB | Sell (S) | −3,423 | -$145.7K | EDGAR |
| 2024-11-26 | TENB | Mixed | +7,751 | -$100.1K | EDGAR |
| 2024-11-22 | TENB | Sell (S) | −823 | -$33.5K | EDGAR |
| 2024-11-20 | TENB | Mixed | +2,352 | -$90.0K | EDGAR |
| 2024-08-28 | TENB | Sell (S) | −4,334 | -$179.9K | EDGAR |
| 2024-08-26 | TENB | Mixed | +7,737 | -$97.9K | EDGAR |
| 2024-08-22 | TENB | Sell (S) | −818 | -$34.5K | EDGAR |
Codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.