Colleen Corey - 01 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: 01 Sep 2025
Net transactions value: -$118,556
Form type: 4
Filing time: 03 Sep 2025, 18:02:10 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
COREY COLLEEN	EVP, Global Human Resources	C/O BIO-RAD LABORATORIES, INC., 1000 ALFRED NOBEL DRIVE, HERCULES	/s/ Colleen Corey	02 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	+1,102	+6%	$0.000000	19,581	01 Sep 2025	Direct	F1
transaction	BIO BIO.B	Bio-Rad A Common Stock	Tax liability	$118,556	-398	-2%	$297.88	19,183	01 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	Options Exercise	$0	-254	-100%	$0.000000	0	01 Sep 2025	Bio-Rad A Common Stock	254	$0.000000	Direct	F2, F3
transaction	BIO BIO.B	Restricted Stock Units	Options Exercise	$0	-347	-50%	$0.000000	347	01 Sep 2025	Bio-Rad A Common Stock	347	$0.000000	Direct	F2, F4
transaction	BIO BIO.B	Restricted Stock Units	Options Exercise	$0	-501	-33%	$0.000000	1,002	01 Sep 2025	Bio-Rad A Common Stock	501	$0.000000	Direct	F2, F5

* 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	On September 1, 2021, the reporting person was granted 1,013 restricted stock units, vesting in four equal annual installments beginning on the first anniversary of the grant date.
F4	On September 1, 2022, the reporting person was granted 1,388 restricted stock units, vesting in four equal annual installments beginning on the first anniversary of the grant date.
F5	On September 1, 2023, the reporting person was granted 2,003 restricted stock units, vesting in four equal annual installments beginning on the first anniversary of the grant date.