What are Courtney Enloe’s Bio-Rad Class A share holdings after these transactions?

Following the April 24 transactions, Courtney C. Enloe directly holds 826.777 shares of Bio-Rad Class A common stock. This reflects the net result after 186 shares were issued upon RSU vesting and 77 of those shares were withheld to satisfy related tax obligations.

What prior share acquisitions under Bio-Rad’s Employee Stock Purchase Plan are disclosed?

The filing notes that her holdings include 6.1520 shares and 5.6340 shares acquired under the Bio-Rad Employee Stock Purchase Plan on September 30, 2025, and December 31, 2025, respectively, highlighting small additional purchases through the company’s employee stock purchase program.

Bio-Rad (BIO) EVP Courtney Enloe gains shares via RSU vesting, withholds for taxes

Filing Impact

(Neutral)

Filing Sentiment

(Neutral)

Form Type

Rhea-AI Filing Summary

BIO-RAD LABORATORIES, INC. executive vice president and general counsel Courtney C. Enloe reported routine equity compensation activity. On April 24, she acquired 186 shares of Bio-Rad Class A common stock upon the vesting and conversion of restricted stock units, then had 77 shares withheld to cover tax obligations. These transactions increased her direct holdings to 826.777 Class A shares and reduced her restricted stock unit balance to 372 units from an original 744-unit grant scheduled to vest in four equal annual installments.

Insider Trade Summary

186 shares exercised/converted

Mixed 3 txns

Insider ENLOE COURTNEY C

Role EVP, General Counsel & Sec

Type	Security	Shares	Price	Value
Exercise	Restricted Stock Units	186	$0.00	--
Exercise	Bio-Rad A Common Stock	186	$0.00	--
Tax Withholding	Bio-Rad A Common Stock	77	$287.84	$22K

Holdings After Transaction: Restricted Stock Units — 372 shares (Direct, null); Bio-Rad A Common Stock — 826.777 shares (Direct, null)

Footnotes (1)

Shares of Class A common stock acquired on the vesting of restricted stock units. Includes 6.1520 and 5.6340 shares acquired under the Bio-Rad Employee Stock Purchase Plan on 09/30/2025 and 12/31/2025, respectively. Each restricted stock unit represents a contingent right to receive one share of Bio-Rad Class A common stock. On April 24, 2024, the reporting person was granted 744 restricted stock units, vesting in four equal annual installments beginning on the first anniversary of the grant date.

Key Figures

Shares acquired from RSU vesting: 186 shares Shares withheld for taxes: 77 shares Direct Class A holdings after transaction: 826.777 shares +4 more

7 metrics

Shares acquired from RSU vesting 186 shares Class A common stock acquired on April 24, 2026

Shares withheld for taxes 77 shares Tax-withholding disposition on April 24, 2026

Direct Class A holdings after transaction 826.777 shares Total Class A shares held directly after April 24, 2026

Remaining restricted stock units 372 units RSUs outstanding after vesting of part of 744-unit grant

Original RSU grant size 744 units Granted on April 24, 2024, vesting in four equal annual installments

ESPP shares acquired 09/30/2025 6.1520 shares Shares acquired under Employee Stock Purchase Plan

ESPP shares acquired 12/31/2025 5.6340 shares Shares acquired under Employee Stock Purchase Plan

Key Terms

Restricted Stock Units, tax-withholding disposition, derivative exercise/conversion, Employee Stock Purchase Plan, +1 more

5 terms

Restricted Stock Units financial

"security_title: "Restricted Stock Units" and footnote describing each unit as a contingent right"

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.

tax-withholding disposition financial

"transaction_action: "tax-withholding disposition" for the F-code transaction of 77 shares"

A tax-withholding disposition is an event or transaction—such as selling or transferring securities, exercising options, or receiving compensation—that triggers a requirement to hold back part of the payment and remit it to tax authorities. It matters to investors because it reduces the cash they receive immediately and can change the timing and amount of taxable income, like a cashier taking a portion of your sale proceeds to pay taxes before you get the rest.

derivative exercise/conversion financial

"transaction_action: "derivative exercise/conversion" for M-code RSU conversion to Class A shares"

Employee Stock Purchase Plan financial

"footnote: "acquired under the Bio-Rad Employee Stock Purchase Plan""

An employee stock purchase plan is a company program that lets workers buy shares through small payroll deductions, often at a discount to the market price and after a set offering period. Think of it like a workplace savings plan that turns into ownership: it encourages employees to share in the company’s success and can create predictable buying or selling of stock that investors watch because it affects supply, demand and employee incentives.

contingent right financial

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

Form 4 Insider Transactions: What Each Field Means →

04/28/2026 - 12:20 PM

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^*

ENLOE COURTNEY C

(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)
	EVP, General Counsel & Sec

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
04/24/2026

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	04/24/2026		M		186⁽¹⁾	A	$0	826.777⁽²⁾	D
Bio-Rad A Common Stock	04/24/2026		F		77	D	$287.84	749.777	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⁽³⁾	04/24/2026		M			186	⁽⁴⁾	⁽⁴⁾	Bio-Rad A Common Stock	186	$0	372	D

Explanation of Responses:

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

2. Includes 6.1520 and 5.6340 shares acquired under the Bio-Rad Employee Stock Purchase Plan on 09/30/2025 and 12/31/2025, respectively.

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

4. On April 24, 2024, the reporting person was granted 744 restricted stock units, vesting in four equal annual installments beginning on the first anniversary of the grant date.

Remarks:

	/s/ Courtney C. Enloe	04/27/2026
	** 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

FAQ

What did BIO (Bio-Rad Laboratories) executive Courtney Enloe report on this Form 4?

Courtney C. Enloe reported routine equity compensation activity. She acquired 186 Bio-Rad Class A shares from the vesting of restricted stock units and had 77 shares withheld to satisfy tax obligations, reflecting standard treatment rather than an open-market purchase or sale.

How many Bio-Rad Class A shares did Courtney Enloe acquire and what was the source?

She acquired 186 shares of Bio-Rad Class A common stock. These shares were delivered upon the vesting of restricted stock units, with each unit representing a contingent right to receive one share of Class A stock under her equity compensation award.

How many Bio-Rad shares were withheld for Courtney Enloe’s tax obligations?

A total of 77 Bio-Rad Class A shares were withheld. This withholding was recorded as a tax-withholding disposition, meaning shares were delivered back to the issuer to cover tax liabilities tied to the vesting of restricted stock units, not sold on the open market.

How many restricted stock units does Courtney Enloe still hold in Bio-Rad?

After the vesting event, she holds 372 restricted stock units. These units come from a 744-unit grant made on April 24, 2024, which is scheduled to vest in four equal annual installments beginning on the first anniversary of the grant date.