BlackRock, Inc. filed an amended beneficial ownership statement with the SEC on October 27, 2026, disclosing its holdings in Weyerhaeuser Co common stock as of September 30, 2026.

Key Highlights

  • Aggregate beneficial ownership: BlackRock reported beneficial ownership of 68,999,346 shares of Weyerhaeuser Co common stock.
  • Percent of class: The reported holdings represent 9.6% of Weyerhaeuser's outstanding common shares.
  • Sole voting power: BlackRock reported sole voting power over 62,643,101 shares, with no shared voting power.
  • Sole dispositive power: BlackRock reported sole dispositive power over all 68,999,346 shares, with no shared dispositive power.
  • Amendment number: This is Amendment No. 17 to BlackRock's prior filings regarding Weyerhaeuser holdings.
  • Event date: The date of the event requiring this filing was September 30, 2026.

BlackRock's Reported Position in Weyerhaeuser as of September 30, 2026

BlackRock, Inc., a Delaware-incorporated parent holding company headquartered at 50 Hudson Yards, New York, NY 10001, filed Amendment No. 17 to its Schedule 13G on October 27, 2026, reporting beneficial ownership of 68,999,346 shares of Weyerhaeuser Co common stock (CUSIP 962166104). According to the filing, the reporting date triggering this amendment was September 30, 2026. Weyerhaeuser Co, a timberland real estate investment trust, maintains its principal executive offices at 220 Occidental Avenue South, Seattle, Washington, 98104.

The filing states that BlackRock held sole voting power over 62,643,101 shares, while shared voting power was reported as zero. Sole dispositive power extended to the full 68,999,346 shares, and shared dispositive power was also zero. The 68,999,346 shares represent 9.6% of Weyerhaeuser's outstanding common shares, according to the filing. BlackRock certified that 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."

The filing further notes, in accordance with SEC Release No. 34-39538 (January 12, 1998), that the reported holdings reflect securities beneficially owned by certain business units of BlackRock and its subsidiaries and affiliates, described collectively as the "Reporting Business Units." The filing adds that no single person among those with rights to receive dividends or sale proceeds holds an interest exceeding five percent of Weyerhaeuser's total outstanding common shares. The statement was signed by Spencer Fleming, Managing Director, on October 27, 2026. Exhibit 99 to the filing identifies the relevant BlackRock subsidiary or subsidiaries involved, as required for a parent holding company filer.

What Was Disclosed

BlackRock, Inc. disclosed an aggregate beneficial ownership of 68,999,346 shares of Weyerhaeuser Co common stock, equating to 9.6% of the class, with sole voting power over 62,643,101 shares and sole dispositive power over all reported shares, as of September 30, 2026.