CHUNG T J

SEC source: 0001217168-26-000009 · wk-form4_1788897801.xml · nonDerivative · entry 2

CHUNG T J · CIK 0001217168 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 19,320

F3 · shares: Represents shares accrued as payment of dividends on unvested restricted stock units.

SEC source: 0001217168-26-000009 · wk-form4_1788897801.xml · nonDerivative · entry 1

CHUNG T J · CIK 0001217168 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 19,319

F1 · shares: Represents shares acquired pursuant to reinvestment of dividends on shares held pursuant to a deferred compensation plan.

F2 · balance_after: 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.

SEC source: 0001217168-26-000007 · wk-form4_1780949495.xml · nonDerivative · entry 2

CHUNG T J · CIK 0001217168 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 19,304

F2 · shares: Represents shares accrued as payment of dividends on unvested restricted stock units.

SEC source: 0001217168-26-000007 · wk-form4_1780949495.xml · nonDerivative · entry 1

CHUNG T J · CIK 0001217168 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 19,301

F1 · shares: Represents shares acquired pursuant to reinvestment of dividends on shares held pursuant to a deferred compensation plan.

SEC source: 0001217168-26-000005 · wk-form4_1777062060.xml · nonDerivative · entry 1

CHUNG T J · CIK 0001217168 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 19,291

F1 · shares: 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 earlier of (1) the first anniversary of the date of grant or (2) the date of the Company's 2027 Annual Meeting of Stockholders.

SEC source: 0001217168-26-000003 · wk-form4_1773088868.xml · nonDerivative · entry 2

CHUNG T J · CIK 0001217168 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 18,809

F2 · shares: Represents shares accrued as payment of dividends on unvested restricted stock units.

SEC source: 0001217168-26-000003 · wk-form4_1773088868.xml · nonDerivative · entry 1

CHUNG T J · CIK 0001217168 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 18,807

F1 · shares: Represents shares acquired pursuant to reinvestment of dividends on shares held pursuant to a deferred compensation plan.

SEC source: 0001683168-26-000765 · ownership.xml · derivative · entry 2

CHUNG T J · CIK 0001217168 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,660

Underlying: Common Stock · 12,660 shares

Expires 2036-02-01

F3 · derivative.exercise_date: The option is exercisable as it vests. 100% of the shares subject to the option vest on the stated exercisable date, subject to the Reporting Person's continued service with the Issuer through such vesting date.

SEC source: 0001683168-26-000765 · ownership.xml · nonDerivative · entry 1

CHUNG T J · CIK 0001217168 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 51,015

F1 · shares: Represents restricted stock units (RSUs). Each RSU represents a contingent right to receive one share of the Issuer's common stock. 100% of the RSUs vest on February 2, 2027, subject to the Reporting Person's continued service to the Issuer through such vesting date.

F2 · balance_after: Includes RSUs.

SEC source: 0001683168-26-000089 · ownership.xml · nonDerivative · entry 1

CHUNG T J · CIK 0001217168 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 43,758

F1 · shares: Represents restricted stock units (RSUs). Each RSU represents a contingent right to receive one share of the Issuer's common stock. The RSUs are fully vested and granted in lieu of cash payment for the fourth quarter portion of the 2025 annual retainer.

F2 · balance_after: Includes RSUs.

SEC source: 0000889331-25-000217 · form4.xml · nonDerivative · entry 2

CHUNG T J · CIK 0001217168 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 18,786

F2 · shares: Represents shares acquired pursuant to reinvestment of dividends on shares held pursuant to a deferred compensation plan.

SEC source: 0000889331-25-000217 · form4.xml · nonDerivative · entry 1

CHUNG T J · CIK 0001217168 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 18,761

F1 · shares: Represents shares accrued as payment of dividends on unvested restricted stock units.

SEC source: 0001193125-25-230673 · ownership.xml · nonDerivative · entry 1

CHUNG T J · CIK 0001217168 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 41,450

F1 · shares: Represents restricted stock units (RSUs). Each RSU represents a contingent right to receive one share of the Issuer's common stock. The RSUs are fully vested and granted in lieu of cash payment for the third quarter portion of the 2025 annual retainer.

F2 · balance_after: Includes RSUs.

SEC source: 0000889331-25-000170 · form4.xml · nonDerivative · entry 2

CHUNG T J · CIK 0001217168 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 18,758

F2 · shares: Represents shares accrued as payment of dividends on unvested restricted stock units.

SEC source: 0000889331-25-000170 · form4.xml · nonDerivative · entry 1

CHUNG T J · CIK 0001217168 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 18,755

F1 · shares: Represents shares acquired pursuant to reinvestment of dividends on shares held pursuant to a deferred compensation plan.

SEC source: 0000889331-25-000153 · form4.xml · derivative · entry 6

CHUNG T J · CIK 0001217168 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 1,432 shares

Expires 2027-04-23

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_date: The option for 1432 shares vested in increments of one third annually beginning on the first anniversary of the April 23, 2020 date of grant.

SEC source: 0000889331-25-000153 · form4.xml · derivative · entry 5

CHUNG T J · CIK 0001217168 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 911 shares

Expires 2026-04-26

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_date: The option for 911 shares vested in increments of one third annually beginning on the first anniversary of the April 26, 2019 date of grant.

SEC source: 0000889331-25-000153 · form4.xml · nonDerivative · entry 4

CHUNG T J · CIK 0001217168 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 18,730

F4 · price: The shares were sold in multiple transactions at prices ranging from $245.58 to $246.46, 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.

SEC source: 0000889331-25-000153 · form4.xml · nonDerivative · entry 3

CHUNG T J · CIK 0001217168 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 20,394

F3 · price: The shares were sold in multiple transactions at prices ranging from $244.55 to $245.54, 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.

SEC source: 0000889331-25-000153 · form4.xml · nonDerivative · entry 2

CHUNG T J · CIK 0001217168 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 21,073

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0000889331-25-000153 · form4.xml · nonDerivative · entry 1

CHUNG T J · CIK 0001217168 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 19,641

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0000889331-25-000118 · form4.xml · nonDerivative · entry 2

CHUNG T J · CIK 0001217168 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 18,730

F2 · shares: Represents shares acquired pursuant to reinvestment of dividends on shares held pursuant to a deferred compensation plan.

SEC source: 0000889331-25-000118 · form4.xml · nonDerivative · entry 1

CHUNG T J · CIK 0001217168 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 18,703

F1 · shares: Represents shares accrued as payment of dividends on unvested restricted stock units.

SEC source: 0000889331-25-000076 · form4.xml · nonDerivative · entry 1

CHUNG T J · CIK 0001217168 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 18,700

F1 · shares: 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 earlier of (1) the first anniversary of the date of grant or (2) the date of the Company's 2026 Annual Meeting of Stockholders.

SEC source: 0000889331-25-000035 · form4.xml · nonDerivative · entry 1

CHUNG T J · CIK 0001217168 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,681

F1 · shares: Represents shares acquired pursuant to reinvestment of dividends on shares held pursuant to a deferred compensation plan.

SEC source: 0000950170-25-014028 · ownership.xml · derivative · entry 2

CHUNG T J · CIK 0001217168 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,706

Underlying: Common Stock · 7,706 shares

Expires 2035-01-31

F3 · derivative.exercise_date: The option is exercisable as it vests. 100% of the shares subject to the option vest on the stated exercisable date, subject to the Reporting Person's continued service with the Issuer through such vesting date.

SEC source: 0000950170-25-014028 · ownership.xml · nonDerivative · entry 1

CHUNG T J · CIK 0001217168 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 39,267

F1 · shares: Represents restricted stock units (RSUs). Each RSU represents a contingent right to receive one share of the Issuer's common stock. 100% of the RSUs vest on February 1, 2026, subject to the Reporting Person's continued service to the Issuer through such vesting date.

F2 · balance_after: Includes RSUs.

SEC source: 0000889331-24-000199 · form4.xml · nonDerivative · entry 1

CHUNG T J · CIK 0001217168 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,661

F1 · shares: Represents shares acquired pursuant to reinvestment of dividends on shares held pursuant to a deferred compensation plan.

SEC source: 0000889331-24-000175 · form4.xml · nonDerivative · entry 1

CHUNG T J · CIK 0001217168 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,636

F1 · shares: Represents shares acquired pursuant to reinvestment of dividends on shares held pursuant to a deferred compensation plan.

SEC source: 0000889331-24-000149 · form4.xml · nonDerivative · entry 1

CHUNG T J · CIK 0001217168 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,614

F1 · shares: Represents shares acquired pursuant to reinvestment of dividends on shares held pursuant to a deferred compensation plan.

SEC source: 0000889331-24-000088 · form4.xml · derivative · entry 2

CHUNG T J · CIK 0001217168 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 768

Underlying: Common Stock · 768 shares

Expires 2031-04-25

F2 · derivative.exercise_date: The option vests in increments of one-third annually beginning on the first anniversary of the date of grant.

SEC source: 0000889331-24-000088 · form4.xml · nonDerivative · entry 1

CHUNG T J · CIK 0001217168 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,600

F1 · shares: 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 increments of one-third annually beginning on the first anniversary of the date of grant.

SEC source: 0000889331-24-000042 · form4.xml · nonDerivative · entry 1

CHUNG T J · CIK 0001217168 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,078

F1 · shares: Represents shares acquired pursuant to reinvestment of dividends on shares held pursuant to a deferred compensation plan.

SEC source: 0001209191-24-002875 · doc4.xml · derivative · entry 2

CHUNG T J · CIK 0001217168 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,318

Underlying: Common Stock · 15,318 shares

Expires 2034-01-31

F3 · derivative.exercise_date: The option is exercisable as it vests. 100% of the shares subject to the option vest on February 1, 2025, subject to the Reporting Person's continued service with the Issuer through such vesting date.

SEC source: 0001209191-24-002875 · doc4.xml · nonDerivative · entry 1

CHUNG T J · CIK 0001217168 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 35,064

F1 · shares: Represents restricted stock units (RSUs). Each RSU represents a contingent right to receive one share of the Issuer's common stock. 100% of the RSUs vest on February 1, 2025, subject to the Reporting Person's continued service to the Issuer through such vesting date.

F2 · balance_after: Includes RSUs.

SEC source: 0001209191-24-000574 · doc4.xml · nonDerivative · entry 1

CHUNG T J · CIK 0001217168 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 26,683

F1 · shares: Represents restricted stock units (RSUs). Each RSU represents a contingent right to receive one share of the Issuer's common stock. The RSUs are fully vested and granted in lieu of cash payment for the fourth quarter portion of the 2023 annual retainer.

F2 · balance_after: Includes RSUs.

SEC source: 0000889331-23-000169 · form4.xml · nonDerivative · entry 1

CHUNG T J · CIK 0001217168 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,054

F1 · shares: Represents shares acquired pursuant to reinvestment of dividends on shares held pursuant to a deferred compensation plan.

SEC source: 0000889331-23-000143 · form4.xml · nonDerivative · entry 1

CHUNG T J · CIK 0001217168 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,031

F1 · shares: Represents shares acquired pursuant to reinvestment of dividends on shares held pursuant to a deferred compensation plan.

SEC source: 0001209191-23-046785 · doc4.xml · nonDerivative · entry 1

CHUNG T J · CIK 0001217168 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 23,429

F1 · price: Represents a weighted average purchase price per share. These shares were purchased in multiple transactions at prices ranging from $4.20 to $4.25. The Reporting Person has provided to the issuer, and will provide to any security holder of the issuer or the SEC staff, upon request, information regarding the number of shares purchased at each price within the range.

F2 · balance_after: Includes restricted stock units.

SEC source: 0000889331-23-000117 · form4.xml · nonDerivative · entry 1

CHUNG T J · CIK 0001217168 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,009

F1 · shares: Represents shares acquired pursuant to reinvestment of dividends on shares held pursuant to a deferred compensation plan.

SEC source: 0000889331-23-000099 · form4.xml · nonDerivative · entry 2

CHUNG T J · CIK 0001217168 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 16,991

F2 · price: The shares were sold in multiple transactions at prices ranging from $259.66 to $259.73, 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.

SEC source: 0000889331-23-000099 · form4.xml · nonDerivative · entry 1

CHUNG T J · CIK 0001217168 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,191

F1 · price: The shares were sold in multiple transactions at prices ranging from $258.50 to $259.48, 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.

SEC source: 0000889331-23-000058 · form4.xml · derivative · entry 2

CHUNG T J · CIK 0001217168 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 718

Underlying: Common Stock · 718 shares

Expires 2030-04-27

F2 · derivative.exercise_date: The option vests in increments of one-third annually beginning on the first anniversary of the date of grant.

SEC source: 0000889331-23-000058 · form4.xml · nonDerivative · entry 1

CHUNG T J · CIK 0001217168 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 18,741

F1 · shares: Represents the grant of restricted stock units to the reporting person pursuant to the Amended and Restated Littelfuse, Inc. Long-Term Incentive Plan. The grant vests in increments of one-third annually beginning on the first anniversary of the date of grant.

SEC source: 0001567619-23-004984 · doc1.xml · nonDerivative · entry 1

CHUNG T J · CIK 0001217168 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 18,273

F1 · shares: Represents shares acquired pursuant to reinvestment of dividends on shares held pursuant to a deferred compensation plan.

SEC source: 0001209191-23-007178 · doc4.xml · derivative · entry 2

CHUNG T J · CIK 0001217168 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,247

Underlying: Common Stock · 6,247 shares

Expires 2033-01-31

F3 · derivative.exercise_date: The option is exercisable as it vests. 100% of the shares subject to the option vest on February 1, 2024, subject to the Reporting Person's continued service with the Issuer through such vesting date.

SEC source: 0001209191-23-007178 · doc4.xml · nonDerivative · entry 1

CHUNG T J · CIK 0001217168 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 18,429

F1 · security: Represents restricted stock units (RSUs). Each RSU represents a contingent right to receive one share of the Issuer's common stock. 100% of the RSUs vest on February 1, 2024, subject to the Reporting Person's continued service to the Issuer through such vesting date.

F2 · balance_after: Consists of RSUs.

SEC source: 0001209191-23-019954 · doc4a.xml · derivative · entry 1

CHUNG T J · CIK 0001217168 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,602

Underlying: Common Stock · 6,602 shares

Expires 2033-01-31

F1 · derivative.exercise_date: The option is exercisable as it vests. 100% of the shares subject to the option vest on February 1, 2024, subject to the Reporting Person's continued service with the Issuer through such vesting date.

SEC source: 0001209191-23-032472 · doc4a.xml · derivative · entry 1

CHUNG T J · CIK 0001217168 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,584

Underlying: Common Stock · 7,584 shares

Expires 2033-01-31

F1 · derivative.exercise_date: The option is exercisable as it vests. 100% of the shares subject to the option vest on February 1, 2024, subject to the Reporting Person's continued service with the Issuer through such vesting date.

SEC source: 0001567619-22-021519 · doc1.xml · nonDerivative · entry 1

CHUNG T J · CIK 0001217168 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 18,260

F1 · shares: Represents shares acquired pursuant to reinvestment of dividends on shares held pursuant to a deferred compensation plan.