BlackRock, Inc. filed an amended beneficial ownership statement with the SEC on October 27, 2026, disclosing a 6.7 percent stake in Ambiq Micro Inc. as of September 30, 2026.

Key Highlights

  • Total beneficial ownership: BlackRock reported aggregate beneficial ownership of 1,628,207 shares of Ambiq Micro Inc. common stock.
  • Percent of class: The reported stake represents 6.7% of the outstanding common shares of Ambiq Micro Inc.
  • Sole voting power: BlackRock disclosed sole voting power over 1,589,366 shares, with zero shared voting power.
  • Sole dispositive power: BlackRock reported sole dispositive power over all 1,628,207 shares, with zero shared dispositive power.
  • Triggering event date: The date of the event requiring the filing was September 30, 2026.
  • Amendment number: This filing is Amendment No. 1 to a previously submitted statement.
  • Ordinary course certification: BlackRock certified the securities "were acquired and are held in the ordinary course of business" and not to influence or change control of the issuer.

BlackRock's Amended Position in Ambiq Micro Common Stock

According to the filing, BlackRock, Inc., a Delaware-organized holding company headquartered at 50 Hudson Yards, New York, NY 10001, submitted this amended statement to update its reported ownership of common stock in Ambiq Micro Inc., whose principal executive offices are located at 6500 River Place Blvd., Building 7, Austin, TX 78730. The filing identifies BlackRock as a parent holding company (type "HC"), and states that the disclosed ownership reflects securities beneficially owned by certain business units of BlackRock, Inc. and its subsidiaries and affiliates, as described in accordance with SEC Release No. 34-39538 dated January 12, 1998.

The filing further states that "various persons have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of the common stock of AMBIQ MICRO INC." and that no single person's interest exceeds five percent of total outstanding common shares. The specific subsidiaries that acquired the reported securities are identified in Exhibit 99 attached to the filing. Spencer Fleming, Managing Director, signed the document on behalf of BlackRock, Inc. on October 27, 2026.

What Was Disclosed

BlackRock, Inc. disclosed amended beneficial ownership of 1,628,207 shares of Ambiq Micro Inc. common stock, equaling 6.7% of the class, as of September 30, 2026. The filing confirms sole dispositive and voting authority, with no shared power reported in either category.