Tenable Holdings’ amended ownership report lists Vanguard Portfolio Management and named affiliates as beneficial owners of 11,212,876 common shares, representing 10.18%. Vanguard classifies the position as passive, says the securities were held in the ordinary course and states they were not acquired to change or influence Tenable’s control.

Key Highlights

  • The ownership position includes securities held by Vanguard funds, sleeves and client accounts managed by named affiliates.
  • Vanguard states it can direct dividends or sale proceeds linked to the reported securities.
  • No other person’s interest in the reported securities exceeds 5%.

Tenable Holdings, Inc. (NASDAQ: TENB) lists Vanguard Portfolio Management and named affiliates as beneficial owners of 11,212,876 common shares, equal to 10.18% of the company. The amended ownership position is classified as passive rather than control-oriented.

Vanguard Reports 11,212,876 Common Shares

The reported securities were held as of August 31, 2026. The report says Vanguard Portfolio Management exercises dispositive power over fund holdings, while the named affiliates exercise dispositive and/or voting power over applicable client securities. The ownership disclosure references SEC Release No. 34-39538 from January 12, 1998. The report identifies Tenable’s common stock by CUSIP 88025T102. Vanguard certified on September 4, 2026, that the securities were acquired and held in the ordinary course of business. The certification states they were not acquired or held to change or influence Tenable Holdings’ control. My Trieu-Gatt signed as authorized signatory and head of global fund administration for Vanguard Portfolio Management. The report also states that no other person’s interest in the securities exceeds 5%.