Eva Anette Engelhardt - 05 Sep 2025 Form 4 Insider Report for BIO-RAD LABORATORIES, INC. (BIO)

Role: EVP, President, CDG
Signature: /s/ Eva Anette Engelhardt
Issuer symbol: BIO
Transactions as of: 05 Sep 2025
Net transactions value: -$122,013
Form type: 4
Filing time: 09 Sep 2025, 16:21:06 UTC
Previous filing: 29 Jul 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
ENGELHARDT EVA ANETTE	EVP, President, CDG	C/O BIO-RAD LABORATORIES, INC., 1000 ALFRED NOBEL DRIVE, HERCULES	/s/ Eva Anette Engelhardt	09 Sep 2025	0002024911

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	+1,152	+734%	$0.000000	1,309	06 Sep 2025	Direct	F1
transaction	BIO BIO.B	Bio-Rad A Common Stock	Tax liability	$122,013	-413	-32%	$295.43	896	06 Sep 2025	Direct

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	Award	$0	+4,110		$0.000000	4,110	05 Sep 2025	Bio-Rad A Common Stock	4,110	$0.000000	Direct	F2, F3
transaction	BIO BIO.B	Restricted Stock Units	Options Exercise	$0	-1,152	-25%	$0.000000	3,456	06 Sep 2025	Bio-Rad A Common Stock	1,152	$0.000000	Direct	F2, F3

* 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	Each restricted stock unit represents a contingent right to receive one share of Bio-Rad Class A common stock.
F3	The restricted stock units vest over four years at 25% per year on the yearly anniversary date of the grant.