Ameriprise Financial, Inc. Increases Stake in Tenable Holdings, Inc. to 7.4%

Ameriprise Financial, Inc. (AFI) filed a Schedule 13G/A on May 15, 2026, disclosing a significant increase in its position in Tenable Holdings, Inc. (TENB). As of the event date on March 31, 2026, Ameriprise Financial, Inc. reported beneficial ownership of 8,499,447 shares of common stock, representing a 7.4% ownership stake in the company. This is an increase from a previous ownership percentage of 0.0%, according to the provided data. The filing was made jointly with its subsidiary, Columbia Management Investment Advisers, LLC (CMIA), which separately reported beneficial ownership of 8,141,316 shares (7.1%). AFI, as the parent company of CMIA, may be deemed to beneficially own the shares held by CMIA. The reporting persons indicated shared voting power over 7,794,236 shares and shared dispositive power over 8,499,447 shares. The securities were acquired in the ordinary course of business and not for the purpose of influencing or changing control of the issuer.