Norman Schwartz - Sep 25, 2025 SCHEDULE 13D/A Report for Bio-Rad Laboratories, Inc. Class B Common Stock (BIO)

Filing Manager
SCHWARTZ NORMAN D
Reporting Manager
Norman D. Schwartz
Security
Bio-Rad Laboratories, Inc. Class B Common Stock
Symbol
BIO
Shares outstanding
5.07M shares
Disclosed Ownership
4.93M shares
Ownership
97.2%
Form type
SCHEDULE 13D/A
Date filed
10/30/2025, 04:36 PM
Date of event
Sep 25, 2025
SEC
View on sec.gov

Reporting Managers (4)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
Norman D. Schwartz 97.2% 4.93M 869K 4.06M /s/ Norman D. Schwartz Norman D. Schwartz, Individually 0000940805
Steven D. Schwartz 80.8% 4.1M 38.2K 4.06M /s/ Steven D. Schwartz Steven D. Schwartz, Individually 0000940804
Blue Raven Partners, L.P. 80.1% 4.06M 4.06M 0 /s/ Norman D. Schwartz Norman D. Schwartz, General Partner
Alice N. Schwartz Revocable Trust 8.6% 438K 438K 0 /s/ Norman D. Schwartz Norman D. Schwartz, Trustee