NDSN

On June 1, 2024, the Company awarded 1,545 restricted share units under the Company's stock plan vesting in 1/3 increments over a 3-year period. 148 of the restricted share units were withheld to cover withholding taxes due upon vesting.

Pursuant to the terms of the Company's Stock and Award Plan ("Plan"), and the Notice and Terms of Grant Share-Based Award dated November 1, 2025 ("Notice"), reporting person was granted 822 restricted share units on November 1, 2025, which would vest entirely on October 31, 2026 . Reporting person ceased service of her term with the Company's Board of Directors on March 1, 2026, and, in accordance with the terms of the Plan and Notice, the 822 shares granted on November 1, 2025, were prorated based on the last day of her term, resulting in forfeiture of 552 restricted share units. Pursuant to the terms of the Company's Directors' Deferred Compensation Sub-Plan, the reporting person elected to defer the remaining 270 restricted share units into share equivalent units.

On May 1, 2026, pursuant to the terms of the Company's Directors' Deferred Compensation Sub-Plan, the totality of the 2,098 stock equivalent units in reporting person's deferred compensation account converted to common shares on a one-for-one basis, and were distributed to her outright by Company's transfer agent.

Pursuant to the terms of the Company's Directors' Deferred Compensation Sub-Plan, the reporting person elected to defer a portion of his quarterly cash retainer payment into Stock Equivalent Units. At the time of distribution, stock equivalent units convert to common shares on a one-for-one basis

The total holdings include 9 Stock Equivalent Units and/or Restricted Share Units accrued from dividend payments pursuant to the Company's Stock Incentive and Award Plan

Pursuant to the terms of the Company's Directors' Deferred Compensation Sub-Plan, the reporting person elected to defer his quarterly cash retainer payment into Stock Equivalent Units. At the time of distribution, stock equivalent units convert to common shares on a one-for-one basis

The total holdings include 18 Stock Equivalent Units and/or Restricted Share Units accrued from dividend payments pursuant to the Company's Stock Incentive and Award Plan.

Exercise of reporting person's stock options that would otherwise expire 11/21/26 of which shares were sold to pay the exercise price, to cover withholding taxes, and to pay broker fees and commissions, pursuant to a broker-assisted cashless exercise and sale.

Sold pursuant to a 10b5-1 plan adopted on January 13, 2026.

Sold pursuant to a 10b5-1 plan adopted on January 13, 2026.

On December 20, 2024, the Company granted 641 restricted share units vesting in equal one-third installments over three years. Upon the reporting person's retirement, all unvested restricted share units accelerated and vested on April 16, 2026. 127 of the restricted share units were withheld to cover withholding taxes due upon vesting.

On December 1, 2023, the Company granted 716 restricted share units vesting in equal one-third installments over three years. Upon the reporting person's retirement, all unvested restricted share units accelerated and vested on April 16, 2026. 71 of the restricted share units were withheld to cover withholding taxes due upon vesting.

On March 1, 2023 the Company awarded 311 restricted share units under the Company's stock plan vesting in 1/3 increments over a 3-year period. 30 of the restricted share units were withheld to cover withholding taxes due upon vesting.

Exercise of a portion of reporting person's stock options that would otherwise expire 11/23/2030, of which shares were sold to pay the exercise price, to cover withholding taxes, and to pay broker fees and commissions, pursuant to a broker-assisted cashless exercise and sale.

Price reflected is the weighted-average sale price for shares sold. The shares were sold in multiple transactions, and the range of sale prices for the transactions reported was $290.71 to $295.26. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or any staff member of the Securities and Exchange Commission, upon request, information regarding the number of shares sold at each separate price.

Price reflected is the weighted-average sale price for shares sold. The shares were sold in multiple transactions, and the range of sale prices for the transactions reported was $290.71 to $295.07. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or any staff member of the Securities and Exchange Commission, upon request, information regarding the number of shares sold at each separate price.

Exercise of reporting person's stock options that would otherwise expire11/25/2029 of which shares were sold to pay the exercise price, to cover withholding taxes, and to pay broker fees and commissions, pursuant to a broker-assisted cashless exercise and sale.

The total holdings include 127 Stock Equivalent Units and/or Restricted Share Units accrued from dividend payments pursuant to the Company's Stock Incentive and Award Plan.

Price reflected is the weighted-average sale price for shares sold. The shares were sold in multiple transactions, and the range of sale prices for the transactions reported was $291.64 to $295.04. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or any staff member of the Securities and Exchange Commission, upon request, information regarding the number of shares sold at each separate price.

Price reflected is the weighted-average sale price for shares sold. The shares were sold in multiple transactions, and the range of sale prices for the transactions reported was $290.71 to $295.07. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or any staff member of the Securities and Exchange Commission, upon request, information regarding the number of shares sold at each separate price.

Price reflected is the weighted-average sale price for shares sold. The shares were sold in multiple transactions, and the range of sale prices for the transactions reported was $290.71 to $295.26. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or any staff member of the Securities and Exchange Commission, upon request, information regarding the number of shares sold at each separate price.

Exercise of a portion of reporting person's stock options that would otherwise expire 7/6/2030 of which shares were sold to pay the exercise price, to cover withholding taxes, and to pay broker fees and commissions, pursuant to a broker-assisted cashless exercise and sale.

Price reflected is the weighted-average sale price for shares sold. The shares were sold in multiple transactions, and the range of sale prices for the transactions reported was $291.64 to $295.04. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or any staff member of the Securities and Exchange Commission, upon request, information regarding the number of shares sold at each separate price.

Exercise of a portion of reporting person's stock options that would otherwise expire 7/6/2030 of which shares were sold to pay the exercise price, to cover withholding taxes, and to pay broker fees and commissions, pursuant to a broker-assisted cashless exercise and sale.

Exercise of a portion of reporting person's stock options that would otherwise expire 11/23/2030, of which shares were sold to pay the exercise price, to cover withholding taxes, and to pay broker fees and commissions, pursuant to a broker-assisted cashless exercise and sale.