SCHEDULE 13D/A

WEST FRASER TIMBER COMPANY LTD

Common Shares, no par value · CUSIP: 952845105

Event date: 2026-11-05

Reporting persons may disclose overlapping interests. Their amounts are shown individually and are not added into a filing total.

Filing-level shares

Unavailable

Percent of class

Unavailable

• Banasino Investments S.a r.l.Reported CIK 0001966736

  Shares: 8,356,494.00 · Class: 11.0%

• Banasino Establishment

  Shares: 8,356,494.00 · Class: 11.0%

• Naruso Stiftung

  Shares: 8,356,494.00 · Class: 11.0%

• Banasino Foundation

  Shares: 8,356,494.00 · Class: 11.0%

• Betuva Stiftung

  Shares: 8,356,494.00 · Class: 11.0%

• Luda Stiftung

  Shares: 0.00 · Class: 0.0%

• Banasino Investments LtdReported CIK 0001900235

  Shares: 0.00 · Class: 0.0%

Amounts are as disclosed in this filing. Schedule type alone does not establish investment intent.