As of November 6, 2026, 5 holders' latest Schedule 13D or 13G filings report owning 5% or more of Tenable Holdings Inc. The largest reported stake is BlackRock, Inc.'s, at 17.5%. 12 filings are on record since July 8, 2025 (Schedule 13G/A, September 4, 2026).
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Key facts
- · Reporting person: Fmr LLC · Sole voting: 6,902,147 · Shared voting: 0 · Sole dispositive: 7,770,723 · Shared dispositive: 0 · SCHEDULE 13G, 2026-11-05
- · Reporting person: BlackRock, Inc. · Sole voting: 19,143,175 · Shared voting: 0 · Sole dispositive: 19,326,921 · Shared dispositive: 0 · SCHEDULE 13G/A, 2026-09-04
- · Reporting person: Vanguard Portfolio Management · Sole voting: 106,224 · Shared voting: 0 · Sole dispositive: 11,212,876 · Shared dispositive: 0 · SCHEDULE 13G/A, 2026-09-04
- · Reporting person: Ameriprise Financial, Inc. · Sole voting: 0 · Shared voting: 13,536,242 · Sole dispositive: 0 · Shared dispositive: 15,063,544 · SCHEDULE 13G/A, 2026-06-05
- · Holder: BlackRock, Inc. · Percent: 10.3% · SCHEDULE 13G/A
Tenable Holdings Inc has 12 Schedule 13D or 13G filings on record since 2025-07-08. 5 holders' latest filing reports 5% or more of common stock. Each figure below is the holder's own, as filed, with the filing linked.
Holders
| Holder | Percent | Shares | Latest | Event date |
|---|---|---|---|---|
| BlackRock, Inc. | 17.5% | 19,326,921 | SCHEDULE 13G/A, 2026-09-04 | 2026-08-31 |
| Ameriprise Financial, Inc. | 13.7% | 15,063,544 | SCHEDULE 13G/A, 2026-06-05 | 2026-05-31 |
| Vanguard Portfolio Management | 10.18% | 11,212,876 | SCHEDULE 13G/A, 2026-09-04 | 2026-08-31 |
| Fmr LLC | 7% | 7,770,723 | SCHEDULE 13G, 2026-11-05 | 2026-09-30 |
| Vanguard Capital Management | 5.44% | 6,251,253 | SCHEDULE 13G, 2026-04-30 | 2026-03-31 |
| The Vanguard Group | 0% | 0 | SCHEDULE 13G/A, 2026-03-27 | 2026-03-13 |
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More on Tenable Holdings Inc and the records around it.
Tenable Holdings Inc elsewhere on the record
- Leadership changes Oct 2026
- Who owns it
Companies that share a holder
- Ameriprise Financial, Inc. also filed stake reports on 65 other companies: Universal Electronics Inc. (Sep 2026), America's Car-Mart, Inc. (Aug 2026), Ampco-Pittsburgh Corporation (Aug 2026)
- FMR LLC also filed stake reports on 761 other companies: ASPEN NEUROSCIENCE INC (Nov 2026), AVALO THERAPEUTICS INC (Nov 2026), BRAZE INC (Nov 2026)
- Vanguard Portfolio Management also filed stake reports on 941 other companies: Newmark Group Inc (Nov 2026), A10 Networks Inc (Oct 2026), ADT Inc (Oct 2026)
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What They Do, And How The Money Works
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Voting and dispositive power, as filed
| Reporting person | Sole voting | Shared voting | Sole dispositive | Shared dispositive | Filing |
|---|---|---|---|---|---|
| BlackRock, Inc. | 19,143,175 | 0 | 19,326,921 | 0 | SCHEDULE 13G/A, 2026-09-04 |
| Ameriprise Financial, Inc. | 0 | 13,536,242 | 0 | 15,063,544 | SCHEDULE 13G/A, 2026-06-05 |
| Columbia Management Investment Advisers, LLC | 0 | 13,536,242 | 0 | 14,056,072 | SCHEDULE 13G/A, 2026-06-05 |
| Columbia Seligman Technology and Information Fund | 8,878,977 | 0 | 0 | 8,878,977 | SCHEDULE 13G/A, 2026-06-05 |
| Vanguard Portfolio Management | 106,224 | 0 | 11,212,876 | 0 | SCHEDULE 13G/A, 2026-09-04 |
| Fmr LLC | 6,902,147 | 0 | 7,770,723 | 0 | SCHEDULE 13G, 2026-11-05 |
| Abigail P. Johnson | 0 | 0 | 7,770,723 | 0 | SCHEDULE 13G, 2026-11-05 |
The latest filing identifies Tenable Holdings Inc by CUSIP 88025T102 and gives its principal executive office as 6100 MERRIWEATHER DRIVE, COLUMBIA, MD 21044 (SCHEDULE 13G, 2026-11-05).
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2025-07-08 | Fmr LLC | 3.8% | SCHEDULE 13G/A |
| 2025-08-14 | Ameriprise Financial, Inc. | 5.3% | SCHEDULE 13G |
| 2025-10-31 | The Vanguard Group | 12.35% | SCHEDULE 13G/A |
| 2026-03-27 | The Vanguard Group | 0% | SCHEDULE 13G/A |
| 2026-04-29 | Vanguard Portfolio Management | 8.47% | SCHEDULE 13G |
| 2026-04-30 | Vanguard Capital Management | 5.44% | SCHEDULE 13G |
| 2026-05-15 | Ameriprise Financial, Inc. | 7.4% | SCHEDULE 13G/A |
| 2026-06-04 | BlackRock, Inc. | 10.3% | SCHEDULE 13G/A |
| 2026-06-05 | Ameriprise Financial, Inc. | 13.7% | SCHEDULE 13G/A |
| 2026-09-04 | BlackRock, Inc. | 17.5% | SCHEDULE 13G/A |
| 2026-09-04 | Vanguard Portfolio Management | 10.18% | SCHEDULE 13G/A |
| 2026-11-05 | Fmr LLC | 7% | SCHEDULE 13G |
Questions about who owns Tenable Holdings Inc
Who owns Tenable Holdings Inc?
On this page, 5 holders' latest ownership filings report 5% or more of Tenable Holdings Inc: BlackRock, Inc. (17.5%, Schedule 13G/A, filed 2026-09-04), Ameriprise Financial, Inc. (13.7%, Schedule 13G/A, filed 2026-06-05), Vanguard Portfolio Management (10.18%, Schedule 13G/A, filed 2026-09-04), Fmr LLC (7%, Schedule 13G, filed 2026-11-05) and Vanguard Capital Management (5.44%, Schedule 13G, filed 2026-04-30).
Who are the largest shareholders of Tenable Holdings Inc?
By the share each holder's latest filing reports, the largest holders of Tenable Holdings Inc on this page are BlackRock, Inc. (17.5%), Ameriprise Financial, Inc. (13.7%) and Vanguard Portfolio Management (10.18%).
When did BlackRock, Inc. buy into Tenable Holdings Inc?
The filings give report dates, not purchase dates. The earliest filing from BlackRock, Inc. on this page is the Schedule 13G/A, filed 2026-06-04, reporting 10.3%; its latest, Schedule 13G/A filed 2026-09-04, reports 17.5%. That earliest filing is itself an amendment, which updates an earlier report.
Is this an audit or a full list?
Neither. The ownership list on this page covers only Schedule 13D and 13G filings, which holders make once they own 5% or more of a class of shares (an amendment can report a stake that has since fallen below 5%); 12 such filings are shown here. It is not an audit and not a full cap table: holders who never reached 5% are not listed, and a stake can change after its latest filing.
Also on the record for Tenable Holdings Inc
| Date | Record | Figure | Our page | Source |
|---|---|---|---|---|
| October 6, 2026 | Leadership change: Charles Bell appointed, Director | — | Leadership changes | Source |
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Where this comes from
Anyone who comes to own more than 5% of a class of a listed company's voting shares has to tell the SEC. A holder who may seek to change or influence the company files Schedule 13D, and has to say in Item 4, "Purpose of Transaction", what it intends to do. A holder with no such intent, such as many index and passive funds, may file the shorter Schedule 13G. Both are amended when the stake changes, including when it falls below 5%.
Every row here is one of those filings, linked to the filing itself. Percentages and share counts are exactly as the holder filed them, for the holder the filing names; an amendment showing a lower figure is shown as filed. Item 4 text is quoted word for word. Where a 13D's Item 4 contains a sentence stating a definite intent to influence the company, that sentence is marked and quoted; the page does not describe the holder or its motives beyond the words it filed. Nothing here is investment advice.