LFUS · Littelfuse Inc /De

Closing price per share on the trading date of the vesting of restricted stock units or on the next preceding trading date if the vesting occurs on a non-trading date.

Represents the grant of restricted stock units to the reporting person pursuant to the Amended and Restated Littelfuse, Inc. Long-Term Incentive Plan, as amended. The grant vests in full on the first anniversary of the date of grant.

Represents shares acquired pursuant to deferred compensation plan.

The option for 6,689 shares vested in increments of one third annually beginning on the first anniversary of the July 10, 2020 date of grant.

Closing price per share on the trading date of the vesting of restricted stock units or on the next preceding trading date if the vesting occurs on a non-trading date.

The shares were sold in multiple transactions at prices ranging from $481.82 to $482.80, inclusive. This amount represents the weighted average sale price of such transactions. The reporting person undertakes to provide full information regarding the number of shares sold at each separate price upon request of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.

The shares were sold in multiple transactions at prices ranging from $482.95 to $483.61, inclusive. This amount represents the weighted average sale price of such transactions. The reporting person undertakes to provide full information regarding the number of shares sold at each separate price upon request of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.

The option for 1,432 shares vested in increments of one third annually beginning on the first anniversary of the April 23, 2020 date of grant.

The number of shares beneficially owned has been reduced to adjust for an overstatement of 2 shares in a Form 4 filed on 6/8/2026.

The shares were sold in multiple transactions at prices ranging from $451.44 to $452.42, inclusive. This amount represents the weighted average sale price of such transactions. The reporting person undertakes to provide full information regarding the number of shares sold at each separate price upon request of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.

The shares were sold in multiple transactions at prices ranging from $454.06 to $454.08, inclusive. This amount represents the weighted average sale price of such transactions. The reporting person undertakes to provide full information regarding the number of shares sold at each separate price upon request of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.

The shares were sold in multiple transactions at prices ranging from $449.31 to $450.21, inclusive. This amount represents the weighted average sale price of such transactions. The reporting person undertakes to provide full information regarding the number of shares sold at each separate price upon request of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.

The shares were sold in multiple transactions at prices ranging from $450.42 to $450.91, inclusive. This amount represents the weighted average sale price of such transactions. The reporting person undertakes to provide full information regarding the number of shares sold at each separate price upon request of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.

The shares were sold in multiple transactions at prices ranging from $452.46 to $453.03, inclusive. This amount represents the weighted average sale price of such transactions. The reporting person undertakes to provide full information regarding the number of shares sold at each separate price upon request of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.

Represents shares acquired pursuant to reinvestment of dividends on shares held pursuant to a deferred compensation plan.

Represents shares accrued as payment of dividends on unvested restricted stock units.

Represents shares accrued as payment of dividends on unvested restricted stock units.

Represents shares accrued as payment of dividends on unvested restricted stock units.

Represents shares accrued as payment of dividends on unvested restricted stock units.

Represents shares accrued as payment of dividends on unvested restricted stock units.

Represents shares accrued as payment of dividends on unvested restricted stock units.

Represents shares accrued as payment of dividends on unvested restricted stock units.

Represents shares accrued as payment of dividends on unvested restricted stock units.

Represents shares acquired pursuant to reinvestment of dividends on shares held pursuant to a deferred compensation plan.

Represents shares acquired pursuant to reinvestment of dividends on shares held pursuant to a deferred compensation plan.

Represents shares acquired pursuant to reinvestment of dividends on shares held pursuant to a deferred compensation plan.

Represents shares accrued as payment of dividends on unvested restricted stock units.

Represents shares accrued as payment of dividends on unvested restricted stock units.

Represents shares accrued as payment of dividends on unvested restricted stock units.

Represents shares accrued as payment of dividends on unvested restricted stock units.

Represents shares accrued as payment of dividends on unvested restricted stock units.

Represents shares accrued as payment of dividends on unvested restricted stock units.

Represents shares accrued as payment of dividends on unvested restricted stock units.

Represents shares accrued as payment of dividends on unvested restricted stock units.

This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 3, 2026.

The option for 2,486 shares vests in increments of one third annually beginning on the first anniversary of the April 28, 2022 date of grant.

The option for 3,285 shares vests in increments of one third annually beginning on the first anniversary of the April 27, 2023 date of grant.

The shares were sold in multiple transactions at prices ranging from $485.95 to $486.64, inclusive. This amount represents the weighted average sale price of such transactions. The reporting person undertakes to provide full information regarding the number of shares sold at each separate price upon request of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.

The option for 1,355 shares vests in increments of one third annually beginning on the first anniversary of the April 22, 2021 date of grant.

The option for 4,568 shares vests in increments of one-third annually beginning on the first anniversary of the April 25, 2024 date of grant.

The shares were sold in multiple transactions at prices ranging from $484.77 to $485.08, inclusive. This amount represents the weighted average sale price of such transactions. The reporting person undertakes to provide full information regarding the number of shares sold at each separate price upon request of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.

The shares were sold in multiple transactions at prices ranging from $436.02 to $436.93, inclusive. This amount represents the weighted average sale price of such transactions. The reporting person undertakes to provide full information regarding the number of shares sold at each separate price upon request of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.