Tenable
Unifies vulnerability, cloud, identity, operational-technology, application, and AI exposure management.
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Breakdown13F · Form 4
Institutions 110.28%Insiders 1.03%
A 13F quarter can total more than the shares outstanding — sub-advisers file the same block twice, and a filer's own share count can be a quarter stale. No split is drawn from it.
Shares outstanding 110.27M · Float 108.69M · 98.6% free float
Institutions13F, as of Jun 30, 2026
326 holders · 121.61M shares · 79 new positions · 181 increased · 110 reduced · 73 closed
| Holder | Shares | % outstanding | Chg q/q | Filed |
|---|---|---|---|---|
| Ameriprise Financial Inc | 15.23M | 13.81% | +6.73M | Aug 14, 2026 |
| BlackRock, Inc. | 13.51M | 12.25% | +16.4K | Aug 7, 2026 |
| Vanguard Portfolio Management LLC | 10.24M | 9.28% | +603.1K | Aug 13, 2026 |
| Vanguard Capital Management LLC | 5.00M | 4.53% | −351.4K | Aug 13, 2026 |
| Arrowstreet Capital, Limited Partnership | 4.41M | 4.00% | +674.7K | Aug 13, 2026 |
| FMR LLC | 4.14M | 3.75% | +567.6K | Aug 13, 2026 |
| State Street Corp | 3.24M | 2.94% | +151.5K | Aug 7, 2026 |
| First Trust Advisors LP | 2.97M | 2.70% | +282.8K | Aug 11, 2026 |
Beneficial owners13D/G · 5% or more, as filed
| Holder | % of class | Shares | Form | Filed |
|---|---|---|---|---|
| Ameriprise Financial, Inc. | 13.70% | 15.06M | 13G | Jun 5, 2026 ↗ |
| BlackRock, Inc. | 10.30% | 11.30M | 13G | Jun 4, 2026 ↗ |
| Vanguard Portfolio Management | 8.47% | 9.74M | 13G | Apr 29, 2026 ↗ |
| Vanguard Capital Management | 5.44% | 6.25M | 13G | Apr 30, 2026 ↗ |
InsidersForm 4
| Insider | Role | Shares | % outstanding | Filed |
|---|---|---|---|---|
| Stephen A. Vintz | director, officer: Co-Chief Executive Officer | 624.8K | 0.57% | Aug 25, 2026 |
| Mark C. Thurmond | director, officer: Co-Chief Executive Officer | 195.3K | 0.18% | Aug 25, 2026 |
| Barron Anschutz | other: Chief Accounting Officer | 76.1K | 0.07% | Aug 25, 2026 |
| Arthur W. Jr Coviello | director | 57.8K | 0.05% | May 15, 2026 |
| Matthew Charles Brown | officer: Chief Financial Officer | 47.0K | 0.04% | Aug 25, 2026 |
| George Alex Tosheff | director | 31.3K | 0.03% | May 15, 2026 |
| Niloofar Razi Howe | director | 29.8K | 0.03% | May 15, 2026 |
| Raymond Jr. Vicks | director | 25.0K | 0.02% | Aug 11, 2026 |
| Margaret M. Keane | director | 20.2K | 0.02% | Jun 17, 2026 |
| A. Brooke Seawell | director | 15.3K | 0.01% | May 15, 2026 |
2 ten-percent owners hold 266.4K shares by Form 4, outside the officers-and-directors figure above · 7 people have not refiled in the last 18 months (421.5K shares), so they are not in the figure above
Latest trades
| Date | Insider | Type | Shares | Avg price | Owned after |
|---|---|---|---|---|---|
| Aug 19, 2026 | Linda Kay Zecherdirector | Sale | 690 | $35.76 | 7,012 |
| Aug 18, 2026 | Linda Kay Zecherdirector | Sale | 700 | $35.46 | 7,702 |
| Aug 7, 2026 | Linda Kay Zecherdirector | Sale | 550 | $36.50 | 8,402 |
| Aug 4, 2026 | Linda Kay Zecherdirector | Sale | 600 | $36.00 | 8,952 |
| Aug 3, 2026 | Linda Kay Zecherdirector | Sale | 1,470 | $34.00 | 9,552 |
| Aug 7, 2026 | Raymond Jr. Vicksdirector | Sale | 1,819 | $35.94 | 20,509 |
| May 4, 2026 | Matthew Charles Brownofficer: Chief Financial Officer | Purchase | 12,000 | $21.54 | 30,541 |
| Feb 12, 2026 | Raymond Jr. Vicksdirector | Purchase | 4,500 | $22.17 | 16,266 |
| Feb 9, 2026 | Arthur W. Jr Coviellodirector | Purchase | 12,000 | $21.50 | 51,731 |
| Dec 15, 2025 | A. Brooke Seawelldirector | Sale | 115,000 | $24.82 | 0 |
CongressHouse and Senate disclosures
| Member | Type | Amount | Owner | Traded | Disclosed |
|---|---|---|---|---|---|
| Rep. Ro Khanna · CA17 | Sale | $1,001 – $15,000 | Jul 6, 2026 | Aug 12, 2026 ↗ | |
| Rep. Ro Khanna · CA17 | Sale | $1,001 – $15,000 | Jul 1, 2026 | Aug 12, 2026 ↗ |