NORMAN SCHWARTZ - 01 Sep 2025 Form 4 Insider Report for BIO-RAD LABORATORIES, INC. (BIO BIO.B)

Role: Chairman & CEO, Director, 10%+ Owner
Signature: /s/ Norman Schwartz
Issuer symbol: BIO BIO.B
Transactions as of: 01 Sep 2025
Net transactions value: -$918,662
Form type: 4
Filing time: 03 Sep 2025, 18:00:53 UTC
Previous filing: 05 Mar 2025
Next filing: 09 Sep 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
SCHWARTZ NORMAN D	Chairman & CEO, Director, 10%+ Owner	C/O BIO-RAD LABORATORIES, INC., 1000 ALFRED NOBEL DRIVE, HERCULES	/s/ Norman Schwartz	03 Sep 2025	0000940805

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	BIO BIO.B	Bio-Rad A Common Stock	Options Exercise	$0	+6,353	+1.4%	$0.000000	444,591	01 Sep 2025	Direct	F1
transaction	BIO BIO.B	Bio-Rad A Common Stock	Tax liability	$918,662	-3,084	-0.69%	$297.88	441,507	01 Sep 2025	Direct
holding	BIO BIO.B	Bio-Rad B Common Stock						361,466	01 Sep 2025	Direct
holding	BIO BIO.B	Bio-Rad B Common Stock						13,006	01 Sep 2025	By Spouse	F2
holding	BIO BIO.B	Bio-Rad B Common Stock						4,060,054	01 Sep 2025	By Blue Raven Partners, L.P.	F3

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	BIO BIO.B	Restricted Stock Units	Options Exercise	$0	-1,266	-100%	$0.000000	0	01 Sep 2025	Bio-Rad A Common Stock	1,266	$0.000000	Direct	F4, F5
transaction	BIO BIO.B	Restricted Stock Units	Options Exercise	$0	-2,082	-50%	$0.000000	2,082	01 Sep 2025	Bio-Rad A Common Stock	2,082	$0.000000	Direct	F4, F6
transaction	BIO BIO.B	Restricted Stock Units	Options Exercise	$0	-3,005	-33%	$0.000000	6,010	01 Sep 2025	Bio-Rad A Common Stock	3,005	$0.000000	Direct	F4, F7

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Shares of Class A common stock acquired on the vesting of restricted stock units.
F2	The reporting person disclaims beneficial ownership of these shares.
F3	The shares are held by a limited partnership of which the reporting person is a limited and general partner. The reporting person disclaims beneficial ownership of the reported securities except to the extent of his pecuniary interest therein.
F4	Each restricted stock unit represents a contingent right to receive one share of Bio-Rad Class A common stock.
F5	On September 1, 2021, the reporting person was granted 5,064 restricted stock units, vesting in four equal annual installments beginning on the first anniversary of the grant date.
F6	On September 1, 2022, the reporting person was granted 8,326 restricted stock units, vesting in four equal annual installments beginning on the first anniversary of the grant date.
F7	On September 1, 2023, the reporting person was granted 12,020 restricted stock units, vesting in four equal annual installments beginning on the first anniversary of the grant date.