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

Filing Manager
NORMAN SCHWARTZ
Reporting Manager
Norman D. Schwartz
Security
Bio-Rad Laboratories, Inc. Class B Common Stock
Symbol
BIO
Shares outstanding
5,071,025 shares
Disclosed Ownership
4,929,036 shares
Ownership
97%
Form type
SCHEDULE 13D/A
Filing time
30 Oct 2025, 16:36:55 UTC
Date of event
25 Sep 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% 4,929,036 868,982 4,060,054 /s/ Norman D. Schwartz Norman D. Schwartz, Individually 0000940805
Steven D. Schwartz 81% 4,098,294 38,240 4,060,054 /s/ Steven D. Schwartz Steven D. Schwartz, Individually 0000940804
Blue Raven Partners, L.P. 80% 4,060,054 4,060,054 0 /s/ Norman D. Schwartz Norman D. Schwartz, General Partner
Alice N. Schwartz Revocable Trust 8.6% 437,510 437,510 0 /s/ Norman D. Schwartz Norman D. Schwartz, Trustee