BIO · Bio-Rad Laboratories, Inc.

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

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

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

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 4,311 restricted stock units, vesting in four equal annual installments beginning on the first anniversary of the grant date.

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.

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

Includes 62.2360 shares acquired under the Bio-Rad Employee Stock Purchase Plan on 03/31/2026.

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.

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

The restricted stock units will vest 100% on the earlier of the first anniversary of the grant date or the date of the company's next annual meeting of stockholders.

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

The restricted stock units will vest 100% on the earlier of the first anniversary of the grant date or the date of the company's next annual meeting of stockholders.

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

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

The restricted stock units will vest 100% on the earlier of the first anniversary of the grant date or the date of the company's next annual meeting of stockholders.

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

The restricted stock units will vest 100% on the earlier of the first anniversary of the grant date or the date of the company's next annual meeting of stockholders.

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

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

The restricted stock units will vest 100% on the earlier of the first anniversary of the grant date or the date of the company's next annual meeting of stockholders.

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

The restricted stock units will vest 100% on the earlier of the first anniversary of the grant date or the date of the company's next annual meeting of stockholders.

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

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

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

The restricted stock units will vest 100% on the earlier of the first anniversary of the grant date or the date of the company's next annual meeting of stockholders.

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

The restricted stock units will vest 100% on the earlier of the first anniversary of the grant date or the date of the company's next annual meeting of stockholders.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $306.104 to $306.230, inclusive. The reporting person undertakes to provide to Bio-Rad Laboratories, Inc., any security holder of Bio-Rad Laboratories, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

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

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

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

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

On October 20, 2023, the reporting person was granted 4,176 restricted stock units, vesting in four equal annual installments beginning on the first anniversary of the grant date.

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

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

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

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

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

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

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

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

Includes 56.9880 and 26.7190 shares acquired under the Bio-Rad Employee Stock Purchase Plan on 03/31/2025 and 06/30/2025, respectively.

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

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

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

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

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

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

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

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

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

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

Includes 13.2750 shares acquired under the Bio-Rad Employee Stock Purchase Plan on 06/30/2025.

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

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

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

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

Includes 6.5980 shares acquired under the Bio-Rad Employee Stock Purchase Plan on 06/30/2025.