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 and the Alice N. Schwartz Revocable Trust. The amendment updates the ownership details following the death of Alice N. Schwartz on September 25, 2025. Norman D. Schwartz now holds beneficial ownership of 3,228,922 shares of Class A Common Stock, representing 14.6% of the issued and outstanding Class A Common Stock. Additionally, the Alice N. Schwartz Revocable Trust holds 1,781,356 shares, representing 8.1% of the Class A Common Stock. The filing also details Norman D. Schwartz's indirect beneficial ownership of Class B Common Stock, totaling 4,929,036 shares, which represents 97.2% of the issued and outstanding Class B Common Stock. The purpose of the Shareholders' ownership remains control of the company.