BlackRock, Inc. filed Amendment No. 12 to its Schedule 13G with the SEC on October 27, 2026, disclosing beneficial ownership of 13,479,370 shares of Illumina, Inc. common stock as of September 30, 2026.

Key Highlights

  • Aggregate beneficial ownership: BlackRock reported holding 13,479,370 shares of Illumina common stock, representing 8.9% of the class.
  • Sole voting power: BlackRock disclosed sole voting power over 11,956,205 shares.
  • Sole dispositive power: BlackRock reported sole dispositive power over all 13,479,370 shares beneficially owned.
  • No shared power: Both shared voting power and shared dispositive power were reported as 0.
  • Event date: The filing is based on a triggering event dated September 30, 2026.
  • Dividends and proceeds: The filing states that various persons have the right to receive dividends or proceeds from the sale of the shares, but no single person's interest exceeds five percent of total outstanding common shares.

BlackRock's Beneficial Ownership Position in Illumina as of September 30, 2026

According to the filing, BlackRock, Inc., incorporated in Delaware and headquartered at 50 Hudson Yards, New York, NY 10001, submitted Amendment No. 12 to its Schedule 13G disclosing a beneficial ownership position in Illumina, Inc. (CUSIP: 452327109). The filing identifies BlackRock as a parent holding company or control person, consistent with the "HC" type of reporting person designation on the cover page. The statement reflects securities beneficially owned by certain business units of BlackRock and its subsidiaries and affiliates, as described under SEC Release No. 34-39538 (January 12, 1998), and does not include securities, if any, beneficially owned by other business units whose beneficial ownership is disaggregated in accordance with that release.

The filing reports aggregate beneficial ownership of 13,479,370 shares, equal to 8.9% of Illumina's outstanding common stock. Of that total, BlackRock disclosed sole voting power over 11,956,205 shares and sole dispositive power over the full 13,479,370 shares. Shared voting and dispositive powers were each reported as zero. The identities and classifications of the relevant subsidiaries through which these shares are held are listed in Exhibit 99, attached to the filing. The statement was signed by Spencer Fleming, Managing Director of BlackRock, Inc., on October 27, 2026.

BlackRock certified in the filing that, to the best of its knowledge and belief, the 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 of the securities." Illumina, Inc. is headquartered at 5200 Illumina Way, San Diego, CA 92122, according to the filing.

What Was Disclosed

BlackRock, Inc. filed Amendment No. 12 to its Schedule 13G reporting 13,479,370 shares, or 8.9%, of Illumina, Inc. common stock beneficially owned as of September 30, 2026, with sole voting power over 11,956,205 shares and sole dispositive power over the full position.