Bio-Rad COO acquires 1,869 shares as stock awards vest

Q: How many BIO shares did Jonathan P. DiVincenzo acquire?

Jonathan P. DiVincenzo acquired 1,869 shares of Bio-Rad Class A common stock as restricted stock units vested on October 24, 2026. The report also lists 951 shares delivered or withheld for payment of exercise price or tax liability at $369.95 per share.

The reported derivative position after the transaction was 3,740 restricted stock units; the units vest 25% per year over four years.

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Rhea-AI Filing Summary

BIO-RAD LABORATORIES, INC. President & COO Jonathan P. DiVincenzo acquired 1,869 shares of Bio-Rad Class A common stock on October 24, 2026, as restricted stock units vested. On the same date, 951 shares were delivered or withheld for payment of exercise price or tax liability at $369.95 per share. The reported post-transaction position was 3,740 restricted stock units.

Insider Trade Summary

1,869 shares exercised/converted

Exercise 3 txns

Insider DiVincenzo Jonathan P.

Role President & COO

Type	Security	Shares	Price	Value
Exercise	Restricted Stock Units ^{F2, F3}	1,869	$0.00	$0.00
Exercise	Bio-Rad A Common Stock ^F1	1,869	$0.00	$0.00
Exercise Price or Tax Liability	Bio-Rad A Common Stock	951	$369.95	$352K

Holdings After Transaction: Restricted Stock Units — 3,740 contracts (Direct); Bio-Rad A Common Stock — 2,881 shares (Direct)

Footnotes (3)

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.

Key Figures

Class A common shares acquired: 1,869 shares Shares delivered or withheld: 951 shares Reported transaction price per share: $369.95 per share +3 more

6 metrics

Class A common shares acquired 1,869 shares Acquired on vesting of restricted stock units on October 24, 2026

Shares delivered or withheld 951 shares For payment of exercise price or tax liability on October 24, 2026

Reported transaction price per share $369.95 per share For the 951 shares reported on October 24, 2026

Restricted stock units following transaction 3,740 restricted stock units Reported following the October 24, 2026 transaction

Annual vesting rate 25% per year Restricted stock units vest on the yearly anniversary date of the grant

Vesting period Four years Restricted stock units vest at 25% per year

Key Terms

restricted stock units, contingent right, vesting

3 terms

restricted stock units financial

"Shares of Class A common stock acquired on the vesting of restricted stock units."

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

contingent right financial

"Each restricted stock unit represents a contingent right to receive one share"

vesting financial

"The restricted stock units vest over four years at 25% per year"

Vesting is the process by which you earn full ownership of something, like company stock or a retirement benefit, over time. It’s like earning the right to keep a gift piece by piece the longer you stay with a company, making sure employees stay committed before they receive all the benefits.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

How many BIO shares did Jonathan P. DiVincenzo acquire?

Jonathan P. DiVincenzo acquired 1,869 shares of Bio-Rad Class A common stock as restricted stock units vested on October 24, 2026. The report also lists 951 shares delivered or withheld for payment of exercise price or tax liability at $369.95 per share.

How do Jonathan P. DiVincenzo's Bio-Rad restricted stock units vest?

The restricted stock units vest over four years at 25% per year on the yearly anniversary date of the grant.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 10/27/2026 - 04:57 PM EDT Accepted by SEC EDGAR 10/27/2026 - 04:57 PM EDT

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

DiVincenzo Jonathan P.

(Last)

(First)

(Middle)

C/O BIO-RAD LABORATORIES, INC.

1000 ALFRED NOBEL DRIVE

(Street)

HERCULES

CALIFORNIA

94547

(City)

(State)

(Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
BIO-RAD LABORATORIES, INC. [ BIO BIO.B ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director	10% Owner
X	Officer (give title below)	Other (specify below)
	President & COO

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
10/24/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Bio-Rad A Common Stock	10/24/2026		M		1,869⁽¹⁾	A	$0	3,832	D
Bio-Rad A Common Stock	10/24/2026		F		951	D	$369.95	2,881	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
Restricted Stock Units	$0⁽²⁾	10/24/2026		M			1,869	⁽³⁾	⁽³⁾	Bio-Rad A Common Stock	1,869	$0	3,740	D

Explanation of Responses:

1. Shares of Class A common stock acquired on the vesting of restricted stock units.

2. Each restricted stock unit represents a contingent right to receive one share of Bio-Rad Class A common stock.

3. The restricted stock units vest over four years at 25% per year on the yearly anniversary date of the grant.

Remarks:

	/s/ Jonathan P. DiVincenzo	10/25/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

Source: View Original Filing on SEC EDGAR