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, who passed away on September 25, 2025. Norman D. Schwartz has become the sole trustee of the Alice N. Schwartz Revocable Trust and the David Schwartz Non-Exempt Marital Trust. The filing details transactions involving the exercise of stock options and gifts of shares by Norman D. Schwartz and Steven D. Schwartz. The Shareholders collectively control the management of Bio-Rad and may be deemed 'control persons' of the company. The filing also includes updates on the percentage of Class B Common Stock owned by each reporting person.