Amendment to Schedule 13D for Bio-Rad Laboratories, Inc.

This filing is an amendment to the Schedule 13D for Bio-Rad Laboratories, Inc., filed by Norman D. Schwartz, Steven D. Schwartz, Blue Raven Partners, L.P., and the Alice N. Schwartz Revocable Trust. The amendment reflects changes in beneficial ownership following the death of Alice N. Schwartz on September 25, 2025. Norman D. Schwartz became the sole trustee of the Alice N. Schwartz Revocable Trust and the David Schwartz Non-Exempt Marital Trust, acquiring beneficial ownership of the shares held in these trusts. The filing details various transactions, including stock option exercises and gifts, involving Norman D. Schwartz, Steven D. Schwartz, and the Alice N. Schwartz Revocable Trust. The Shareholders collectively control the management of Bio-Rad and may be deemed 'control persons' of the company.