🕵️ Tenable Holdings, Inc. ($TENB)
SEC insider & ownership activity, last 12 months · CIK 1660280 · every row links its SEC filing
Over the last 12 months insiders sold $3.1M against $616K of open-market buying. Seawell A. Brooke sold $2.9M in discretionary trades (Dec). No red-flag 8-Ks in the window.
Monthly net open-market insider flow, last 12 months (up = net buying)
Insider flow
3 buyers, $616K (3 lots) · 4 sellers, $3.1M (8 lots)
| Insider | Buys | Bought | Sells | Sold | Last |
|---|---|---|---|---|---|
| Seawell A. Brooke | 0 | – | 1 | $2.9M | Dec 15, 2025 |
| Brown Matthew Charles | 1 | $258K | 0 | – | May 4, 2026 |
| Arthur W. Coviello Jr. | 1 | $258K | 0 | – | Feb 9, 2026 |
| Vicks Raymond Jr. | 1 | $100K | 1 | $65K | Aug 7, 2026 |
| Zecher Linda Kay | 0 | – | 5 | $141K | Aug 19, 2026 |
| Anschutz Barron | 0 | – | 1 | $28K | Oct 17, 2025 |
5%+ holders
| Holder | Stake | Class | Schedule | Event | |
|---|---|---|---|---|---|
| BlackRock, Inc. | 17.5% | 13G | Sep 4, 2026 | filing ↗ | |
| Ameriprise Financial, Inc. | 13.7% | 13G | Jun 5, 2026 | filing ↗ | |
| Columbia Management Investment Advisers, LLC | 12.7% | 13G | Jun 5, 2026 | filing ↗ | |
| Vanguard Portfolio Management | 10.2% | 13G | Sep 4, 2026 | filing ↗ | |
| Columbia Seligman Technology and Information Fund | 8.1% | 13G | Jun 5, 2026 | filing ↗ | |
| Vanguard Capital Management | 5.4% | 13G | Apr 30, 2026 | filing ↗ |
Planned insider sales (Form 144)
| Seller | Planned | Approx. sale date | |
|---|---|---|---|
| Linda Zecher-Higgins | $52K | Aug 18, 2026 | filing ↗ |
| Vicks Raymond Jr. | $65K | Aug 7, 2026 | filing ↗ |
| Seawell A. Brooke | $2.9M | Dec 15, 2025 | filing ↗ |
| Anschutz Barron | $28K | Oct 17, 2025 | filing ↗ |
Material events (8-K)
| Item | Event date | |
|---|---|---|
| Material agreement (1.01) | Sep 10, 2026 | filing ↗ |
| Agreement terminated (1.02) | Sep 10, 2026 | filing ↗ |
| New financial obligation (2.03) | Sep 10, 2026 | filing ↗ |
| Unregistered equity sale (3.02) | Sep 10, 2026 | filing ↗ |
| Other events (8.01) | Sep 10, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Sep 10, 2026 | filing ↗ |
| Earnings (2.02) | Jul 29, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jul 29, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | May 21, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 21, 2026 | filing ↗ |
| Shareholder vote (5.07) | May 13, 2026 | filing ↗ |
| Earnings (2.02) | Apr 29, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Apr 29, 2026 | filing ↗ |
| Earnings (2.02) | Feb 4, 2026 | filing ↗ |
| Other events (8.01) | Feb 4, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Feb 4, 2026 | filing ↗ |
| Earnings (2.02) | Oct 29, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Oct 29, 2025 | filing ↗ |