BlackRock, Inc. filed Amendment No. 7 to its Schedule 13G with the SEC on October 27, 2026, disclosing beneficial ownership of 10,816,417 shares of Xencor Inc common stock as of September 30, 2026.

Key Highlights

  • Aggregate beneficial ownership: BlackRock reported beneficial ownership of 10,816,417 shares of Xencor Inc common stock, representing 14.5% of the class.
  • Sole voting power: BlackRock disclosed sole voting power over 10,655,400 shares, with zero shared voting power.
  • Sole dispositive power: BlackRock reported sole dispositive power over all 10,816,417 shares, with zero shared dispositive power.
  • iShares interest: The filing identified iShares Core S&P Small-Cap ETF as having an interest of more than five percent of the total outstanding common stock of Xencor Inc.
  • Triggering event date: The date of event requiring the filing was September 30, 2026.
  • Reporting person classification: BlackRock, Inc. is classified as a holding company (HC), incorporated in Delaware, with principal offices at 50 Hudson Yards, New York, NY 10001.

BlackRock's Amended Ownership Disclosure in Xencor Inc

BlackRock, Inc. submitted Amendment No. 7 to Schedule 13G covering its holdings in Xencor Inc (CUSIP 98401F105), a biopharmaceutical company whose principal executive offices are listed in the filing as 465 N. Halstead St., Suite 200, Pasadena, CA 91107. According to the filing, the triggering event date for this amendment was September 30, 2026, and the document was signed by Spencer Fleming, Managing Director, on October 27, 2026.

The filing reported aggregate beneficial ownership of 10,816,417 shares of Xencor Inc common stock, equal to 14.5% of the class. BlackRock disclosed sole voting power over 10,655,400 shares and sole dispositive power over the full 10,816,417 shares. Shared voting and shared dispositive power were each reported as zero. The filing noted that, in accordance with SEC Release No. 34-39538, the schedule reflects securities beneficially owned by certain business units of BlackRock and its subsidiaries and affiliates, and "does not include securities, if any, beneficially owned by other business units whose beneficial ownership of securities are disaggregated from that of the Reporting Business Units in accordance with such release."

Under Item 6, the filing identified one person, iShares Core S&P Small-Cap ETF, as having an interest of more than five percent of the total outstanding common stock of Xencor Inc. BlackRock certified that the referenced securities "were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer."

What Was Disclosed

BlackRock, Inc. filed Amendment No. 7 to Schedule 13G disclosing 10,816,417 shares, or 14.5%, of Xencor Inc common stock beneficially owned as of September 30, 2026, with sole voting power over 10,655,400 shares and full sole dispositive power, and identified iShares Core S&P Small-Cap ETF as holding more than five percent of the class.