Tenable Holdings, Inc. (TENB) ownership: Top institutional holder: VANGUARD GROUP INC ($363.01M). Insider activity: Net Seller (6 buys, 14 sells). SEC EDGAR first-party data.
| Holder | Shares | Market Value | Reported |
|---|---|---|---|
| VANGUARD GROUP INC | 15427510.00 | $363.01M | 2025-12-31 |
| BlackRock, Inc. | 13497402.00 | $228.31M | 2026-03-31 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 9632968.00 | $162.94M | 2026-03-31 |
| AMERIPRISE FINANCIAL INC | 8499447.00 | $143.77M | 2026-03-31 |
| RGM Capital, LLC | 4071191.00 | $95.80M | 2025-12-31 |
| VANGUARD CAPITAL MANAGEMENT LLC | 5347521.00 | $90.45M | 2026-03-31 |
| SHAPIRO CAPITAL MANAGEMENT LLC | 4150152.00 | $70.20M | 2026-03-31 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 3732271.00 | $63.13M | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-06-15 | |
| Sell | null | 2026-06-15 | |
| Sell | null | 2026-05-22 | |
| Buy | null | 2026-05-22 | |
| Sell | null | 2026-05-22 | |
| Buy | null | 2026-05-22 | |
| Buy | null | 2026-05-22 | |
| Sell | null | 2026-05-22 |
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Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.