Colleen Corey - 05 Sep 2025 Form 4 Insider Report for BIO-RAD LABORATORIES, INC. (BIO)

Role: EVP, Global Human Resources
Signature: /s/ Colleen Corey
Issuer symbol: BIO
Transactions as of: 05 Sep 2025
Net transactions value: -$61,745
Form type: 4
Filing time: 09 Sep 2025, 16:23:07 UTC
Previous filing: 03 Sep 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
COREY COLLEEN	EVP, Global Human Resources	C/O BIO-RAD LABORATORIES, INC., 1000 ALFRED NOBEL DRIVE, HERCULES	/s/ Colleen Corey	08 Sep 2025	0001976271

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	+576	+3%	$0.000000	19,759	06 Sep 2025	Direct	F1
transaction	BIO BIO.B	Bio-Rad A Common Stock	Tax liability	$61,745	-209	-1.1%	$295.43	19,550	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	+2,740		$0.000000	2,740	05 Sep 2025	Bio-Rad A Common Stock	2,740	$0.000000	Direct	F2, F3
transaction	BIO BIO.B	Restricted Stock Units	Options Exercise	$0	-576	-25%	$0.000000	1,728	06 Sep 2025	Bio-Rad A Common Stock	576	$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.