NEU

Represents annual stock grant to non-employee directors. Shares were issued under the NewMarket Corporation 2023 Incentive Compensation and Stock Plan.

Represents annual stock grant to non-employee directors. Shares were issued under the NewMarket Corporation 2023 Incentive Compensation and Stock Plan.

Represents annual stock grant to non-employee directors. Shares were issued under the NewMarket Corporation 2023 Incentive Compensation and Stock Plan.

Represents annual stock grant to non-employee directors. Shares were issued under the NewMarket Corporation 2023 Incentive Compensation and Stock Plan.

Represents annual stock grant to non-employee directors. Shares were issued under the NewMarket Corporation 2023 Incentive Compensation and Stock Plan.

Shares withheld by the Company to satisfy tax withholding obligations related to the vesting of shares of restricted stock granted to the reporting person effective February 19, 2021.

On February 11, 2026, 81,163 shares of the Company's common stock were transferred out of the 2025 GRAT as an annuity payment to the reporting person's directly held account.

On February 11, 2026, 304,014 shares of the Company's common stock were transferred out of the 2025 GRAT as an annuity payment to the reporting person's directly held account.

On February 5, 2026, the Compensation Committee certified attainment of the performance goals for certain performance-based restricted stock awards ("Performance Stock"). The Performance Stock settled with shares of common stock.

On February 5, 2026, the Compensation Committee certified attainment of the performance goals for certain performance-based restricted stock awards ("Performance Stock"). The Performance Stock settled with shares of common stock.

Shares withheld by the Company to satisfy tax withholding obligations related to the Performance Stock that vested on February 5, 2026.

Shares withheld by the Company to satisfy tax withholding obligations related to the Performance Stock that vested on February 5, 2026.

On February 5, 2026, the Compensation Committee certified attainment of the performance goals for certain performance-based restricted stock awards ("Performance Stock"). The Performance Stock settled with shares of common stock.

Shares withheld by the Company to satisfy tax withholding obligations related to the Performance Stock that vested on February 5, 2026.

Shares withheld by the Company to satisfy tax withholding obligations related to the Performance Stock that vested on February 5, 2026.

On February 5, 2026, the Compensation Committee certified attainment of the performance goals for certain performance-based restricted stock awards ("Performance Stock"). The Performance Stock settled with shares of common stock.

On November 25, 2025, 17,432 shares of the Company's common stock were transferred out of 2022 GRAT as an annuity payment to the reporting person's directly held account. Following this transfer, the trust was terminated and the remaining 46,175 shares were transferred to the remaindermen of the trust.

Represents annual stock grant to non-employee directors. Shares were issued under the NewMarket Corporation 2023 Incentive Compensation and Stock Plan.

Represents annual stock grant to non-employee directors. Shares were issued under the NewMarket Corporation 2023 Incentive Compensation and Stock Plan.

Represents annual stock grant to non-employee directors. Shares were issued under the NewMarket Corporation 2023 Incentive Compensation and Stock Plan.

Represents annual stock grant to non-employee directors. Shares were issued under the NewMarket Corporation 2023 Incentive Compensation and Stock Plan.

Represents annual stock grant to non-employee directors. Shares were issued under the NewMarket Corporation 2023 Incentive Compensation and Stock Plan.

On November 25, 2025, 17,432 shares of the Company's common stock were transferred out of 2022 GRAT as an annuity payment to the reporting person's directly held account. Following this transfer, the trust was terminated and the remaining 46,175 shares were transferred to the remaindermen of the trust.