SMTC

SEC source: 0000088941-25-000126 · wk-form4_1749241004.xml · nonDerivative · entry 1

Gillai Saar · CIK 0001674214 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,123

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: 0000088941-25-000124 · wk-form4_1749240935.xml · derivative · entry 3

Li Ye Jane · CIK 0001667921 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 2,857 shares

Expires not disclosed

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_price: Each stock unit represents the contingent right to receive one share of Semtech common stock.

F3 · derivative.exercise_date: This RSU award fully vested on the day immediately preceding the 2025 Annual Meeting of Stockholders.

F3 · derivative.expiration_date: This RSU award fully vested on the day immediately preceding the 2025 Annual Meeting of Stockholders.

SEC source: 0000088941-25-000124 · wk-form4_1749240935.xml · nonDerivative · entry 1

Li Ye Jane · CIK 0001667921 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,014

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: 0000088941-25-000122 · wk-form4_1749240862.xml · derivative · entry 2

LuPriore Paula · CIK 0001384411 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 2,857 shares

Expires not disclosed

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_price: Each stock unit represents the contingent right to receive one share of Semtech common stock.

F2 · derivative.exercise_date: This RSU award fully vested on the day immediately preceding the 2025 Annual Meeting of Stockholders.

F2 · derivative.expiration_date: This RSU award fully vested on the day immediately preceding the 2025 Annual Meeting of Stockholders.

SEC source: 0000088941-25-000122 · wk-form4_1749240862.xml · nonDerivative · entry 1

LuPriore Paula · CIK 0001384411 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,409

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: 0000088941-25-000118 · wk-form4_1749240701.xml · derivative · entry 2

Walsh Paul V Jr · CIK 0001362672 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 2,857 shares

Expires not disclosed

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_price: Each stock unit represents the contingent right to receive one share of Semtech common stock.

F2 · derivative.exercise_date: This RSU award fully vested on the day immediately preceding the 2025 Annual Meeting of Stockholders.

F2 · derivative.expiration_date: This RSU award fully vested on the day immediately preceding the 2025 Annual Meeting of Stockholders.

SEC source: 0000088941-25-000118 · wk-form4_1749240701.xml · nonDerivative · entry 1

Walsh Paul V Jr · CIK 0001362672 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 27,279

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: 0000088941-25-000120 · wk-form4_1749240781.xml · derivative · entry 2

Ruehl Julie Garcia · CIK 0001871750 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 2,857 shares

Expires not disclosed

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_price: Each stock unit represents the contingent right to receive one share of Semtech common stock.

F2 · derivative.exercise_date: This RSU award fully vested on the day immediately preceding the 2025 Annual Meeting of Stockholders.

F2 · derivative.expiration_date: This RSU award fully vested on the day immediately preceding the 2025 Annual Meeting of Stockholders.

SEC source: 0000088941-25-000120 · wk-form4_1749240781.xml · nonDerivative · entry 1

Ruehl Julie Garcia · CIK 0001871750 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,979

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: 0000088941-25-000116 · wk-form4_1749240621.xml · derivative · entry 5

Lin Mark · CIK 0001994152 · EVP and CFO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 12,321 shares

Expires not disclosed

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_price: Each stock unit represents the contingent right to receive one share of Semtech common stock.

F3 · derivative.exercise_date: The reporting person was granted performance stock units by Semtech in Semtech's fiscal year 2025 that are eligible to vest based on Semtech's attainment of pre-established revenue and non-GAAP operating income targets over a period of one, two, and three years, Semtech's relative total stockholder return over a period of three years, and the satisfaction of a service condition. The transaction represents the vesting and payment of the award with respect to the first year in the performance period.

F3 · derivative.expiration_date: The reporting person was granted performance stock units by Semtech in Semtech's fiscal year 2025 that are eligible to vest based on Semtech's attainment of pre-established revenue and non-GAAP operating income targets over a period of one, two, and three years, Semtech's relative total stockholder return over a period of three years, and the satisfaction of a service condition. The transaction represents the vesting and payment of the award with respect to the first year in the performance period.

SEC source: 0000088941-25-000116 · wk-form4_1749240621.xml · nonDerivative · entry 2

Lin Mark · CIK 0001994152 · EVP and CFO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 20,352

SEC source: 0000088941-25-000116 · wk-form4_1749240621.xml · nonDerivative · entry 1

Lin Mark · CIK 0001994152 · EVP and CFO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 26,435

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: 0000088941-25-000114 · wk-form4_1749240537.xml · derivative · entry 3

WILSON JOHN MICHAEL · CIK 0001189923 · Chief Quality Officer and CTO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 8,364 shares

Expires not disclosed

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_price: Each stock unit represents the contingent right to receive one share of Semtech common stock.

F2 · derivative.exercise_date: The reporting person was granted performance stock units by Semtech in Semtech's fiscal year 2025 that are eligible to vest based on Semtech's attainment of pre-established revenue and non-GAAP operating income targets over a period of one, two, and three years, Semtech's relative total stockholder return over a period of three years, and the satisfaction of a service condition. The transaction represents the vesting and payment of the award with respect to the first year in the performance period.

F2 · derivative.expiration_date: The reporting person was granted performance stock units by Semtech in Semtech's fiscal year 2025 that are eligible to vest based on Semtech's attainment of pre-established revenue and non-GAAP operating income targets over a period of one, two, and three years, Semtech's relative total stockholder return over a period of three years, and the satisfaction of a service condition. The transaction represents the vesting and payment of the award with respect to the first year in the performance period.

SEC source: 0000088941-25-000114 · wk-form4_1749240537.xml · nonDerivative · entry 2

WILSON JOHN MICHAEL · CIK 0001189923 · Chief Quality Officer and CTO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 65,066

SEC source: 0000088941-25-000114 · wk-form4_1749240537.xml · nonDerivative · entry 1

WILSON JOHN MICHAEL · CIK 0001189923 · Chief Quality Officer and CTO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 69,314

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: 0000088941-25-000112 · wk-form4_1749240454.xml · derivative · entry 3

Sherazi Imran · CIK 0002028235 · SVP and GM

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 7,639 shares

Expires not disclosed

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_price: Each stock unit represents the contingent right to receive one share of Semtech common stock.

F2 · derivative.exercise_date: The reporting person was granted performance stock units by Semtech in Semtech's fiscal year 2025 that are eligible to vest based on Semtech's attainment of pre-established revenue and non-GAAP operating income targets over a period of one, two, and three years, Semtech's relative total stockholder return over a period of three years, and the satisfaction of a service condition. The transaction represents the vesting and payment of the award with respect to the first year in the performance period.

F2 · derivative.expiration_date: The reporting person was granted performance stock units by Semtech in Semtech's fiscal year 2025 that are eligible to vest based on Semtech's attainment of pre-established revenue and non-GAAP operating income targets over a period of one, two, and three years, Semtech's relative total stockholder return over a period of three years, and the satisfaction of a service condition. The transaction represents the vesting and payment of the award with respect to the first year in the performance period.

SEC source: 0000088941-25-000112 · wk-form4_1749240454.xml · nonDerivative · entry 2

Sherazi Imran · CIK 0002028235 · SVP and GM

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,818

SEC source: 0000088941-25-000112 · wk-form4_1749240454.xml · nonDerivative · entry 1

Sherazi Imran · CIK 0002028235 · SVP and GM

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,908

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: 0000088941-25-000110 · wk-form4_1749240375.xml · derivative · entry 3

Rayabhari Madhusudhan · CIK 0001832524 · SVP and GM

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 10,897 shares

Expires not disclosed

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_price: Each stock unit represents the contingent right to receive one share of Semtech common stock.

F2 · derivative.exercise_date: The reporting person was granted performance stock units by Semtech in Semtech's fiscal year 2025 that are eligible to vest based on Semtech's attainment of pre-established revenue and non-GAAP operating income targets over a period of one, two, and three years, Semtech's relative total stockholder return over a period of three years, and the satisfaction of a service condition. The transaction represents the vesting and payment of the award with respect to the first year in the performance period.

F2 · derivative.expiration_date: The reporting person was granted performance stock units by Semtech in Semtech's fiscal year 2025 that are eligible to vest based on Semtech's attainment of pre-established revenue and non-GAAP operating income targets over a period of one, two, and three years, Semtech's relative total stockholder return over a period of three years, and the satisfaction of a service condition. The transaction represents the vesting and payment of the award with respect to the first year in the performance period.

SEC source: 0000088941-25-000110 · wk-form4_1749240375.xml · nonDerivative · entry 2

Rayabhari Madhusudhan · CIK 0001832524 · SVP and GM

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 61,478

SEC source: 0000088941-25-000110 · wk-form4_1749240375.xml · nonDerivative · entry 1

Rayabhari Madhusudhan · CIK 0001832524 · SVP and GM

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 67,012

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: 0000088941-25-000108 · wk-form4_1749240291.xml · derivative · entry 3

Gray William Ross · CIK 0001961757 · SVP and GM

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 7,639 shares

Expires not disclosed

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_price: Each stock unit represents the contingent right to receive one share of Semtech common stock.

F2 · derivative.exercise_date: The reporting person was granted performance stock units by Semtech in Semtech's fiscal year 2025 that are eligible to vest based on Semtech's attainment of pre-established revenue and non-GAAP operating income targets over a period of one, two, and three years, Semtech's relative total stockholder return over a period of three years, and the satisfaction of a service condition. The transaction represents the vesting and payment of the award with respect to the first year in the performance period.

F2 · derivative.expiration_date: The reporting person was granted performance stock units by Semtech in Semtech's fiscal year 2025 that are eligible to vest based on Semtech's attainment of pre-established revenue and non-GAAP operating income targets over a period of one, two, and three years, Semtech's relative total stockholder return over a period of three years, and the satisfaction of a service condition. The transaction represents the vesting and payment of the award with respect to the first year in the performance period.

SEC source: 0000088941-25-000108 · wk-form4_1749240291.xml · nonDerivative · entry 2

Gray William Ross · CIK 0001961757 · SVP and GM

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,987

SEC source: 0000088941-25-000108 · wk-form4_1749240291.xml · nonDerivative · entry 1

Gray William Ross · CIK 0001961757 · SVP and GM

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 20,074

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: 0000088941-25-000106 · wk-form4_1749240203.xml · derivative · entry 4

Silberstein Asaf · CIK 0001514954 · EVP and COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 12,004 shares

Expires not disclosed

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_price: Each stock unit represents the contingent right to receive one share of Semtech common stock.

F2 · derivative.exercise_date: The reporting person was granted performance stock units by Semtech in Semtech's fiscal year 2025 that are eligible to vest based on Semtech's attainment of pre-established revenue and non-GAAP operating income targets over a period of one, two, and three years, Semtech's relative total stockholder return over a period of three years, and the satisfaction of a service condition. The transaction represents the vesting and payment of the award with respect to the first year in the performance period.

F2 · derivative.expiration_date: The reporting person was granted performance stock units by Semtech in Semtech's fiscal year 2025 that are eligible to vest based on Semtech's attainment of pre-established revenue and non-GAAP operating income targets over a period of one, two, and three years, Semtech's relative total stockholder return over a period of three years, and the satisfaction of a service condition. The transaction represents the vesting and payment of the award with respect to the first year in the performance period.

SEC source: 0000088941-25-000106 · wk-form4_1749240203.xml · nonDerivative · entry 2

Silberstein Asaf · CIK 0001514954 · EVP and COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 109,996

SEC source: 0000088941-25-000106 · wk-form4_1749240203.xml · nonDerivative · entry 1

Silberstein Asaf · CIK 0001514954 · EVP and COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 116,092

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: 0000088941-25-000089 · wk-form4_1743711107.xml · derivative · entry 5

Lin Mark · CIK 0001994152 · EVP and CFO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 18,985

Underlying: Common Stock · 3,164 shares

Expires not disclosed

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_price: Each stock unit represents the contingent right to receive one share of Semtech common stock.

F3 · derivative.exercise_date: One third of this grant vested on October 2, 2024 and the remainder of this grant vests in eight quarterly installments beginning on January 2, 2025.

F3 · derivative.expiration_date: One third of this grant vested on October 2, 2024 and the remainder of this grant vests in eight quarterly installments beginning on January 2, 2025.

SEC source: 0000088941-25-000089 · wk-form4_1743711107.xml · nonDerivative · entry 4

Lin Mark · CIK 0001994152 · EVP and CFO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 14,114

SEC source: 0000088941-25-000089 · wk-form4_1743711107.xml · nonDerivative · entry 3

Lin Mark · CIK 0001994152 · EVP and CFO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 14,209

F1 · price: The price represents the weighted average of these sales. The prices ranged from $33.89 to $34.815. Price and share details are available upon request.

SEC source: 0000088941-25-000089 · wk-form4_1743711107.xml · nonDerivative · entry 2

Lin Mark · CIK 0001994152 · EVP and CFO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 15,127

SEC source: 0000088941-25-000089 · wk-form4_1743711107.xml · nonDerivative · entry 1

Lin Mark · CIK 0001994152 · EVP and CFO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 16,645

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: 0000088941-25-000071 · wk-form4_1743194425.xml · nonDerivative · entry 4

Lin Mark · CIK 0001994152 · EVP and CFO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 13,481

SEC source: 0000088941-25-000071 · wk-form4_1743194425.xml · nonDerivative · entry 3

Lin Mark · CIK 0001994152 · EVP and CFO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 13,681

F2 · price: This price represents the weighted average of these sales. The prices ranged from $37.2 to $38.09. Price and share details are available upon request.

SEC source: 0000088941-25-000087 · wk-form4_1743546866.xml · derivative · entry 3

Gray William Ross · CIK 0001961757 · SVP and GM

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 1,599 shares

Expires not disclosed

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_price: Each stock unit represents the contingent right to receive one share of Semtech common stock.

F2 · derivative.exercise_date: This grant fully vested on March 27, 2025.

F2 · derivative.expiration_date: This grant fully vested on March 27, 2025.

SEC source: 0000088941-25-000087 · wk-form4_1743546866.xml · nonDerivative · entry 2

Gray William Ross · CIK 0001961757 · SVP and GM

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,435

SEC source: 0000088941-25-000087 · wk-form4_1743546866.xml · nonDerivative · entry 1

Gray William Ross · CIK 0001961757 · SVP and GM

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,291

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: 0000088941-25-000085 · wk-form4_1743546745.xml · derivative · entry 3

Rayabhari Madhusudhan · CIK 0001832524 · SVP and GM

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 3,230 shares

Expires not disclosed

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_price: Each stock unit represents the contingent right to receive one share of Semtech common stock.

F2 · derivative.exercise_date: This grant fully vested on March 27, 2025.

F2 · derivative.expiration_date: This grant fully vested on March 27, 2025.

SEC source: 0000088941-25-000085 · wk-form4_1743546745.xml · nonDerivative · entry 2

Rayabhari Madhusudhan · CIK 0001832524 · SVP and GM

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 56,115

SEC source: 0000088941-25-000085 · wk-form4_1743546745.xml · nonDerivative · entry 1

Rayabhari Madhusudhan · CIK 0001832524 · SVP and GM

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 57,756

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: 0000088941-25-000083 · wk-form4_1743195150.xml · derivative · entry 1

WILSON JOHN MICHAEL · CIK 0001189923 · Chief Quality Officer and CTO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,364

Underlying: Common Stock · 8,364 shares

Expires not disclosed

F1 · derivative.exercise_price: Each stock unit represents the contingent right to receive one share of Semtech common stock.

F2 · derivative.exercise_date: The reporting person was granted performance stock units by Semtech in Semtech's fiscal year 2025 that are eligible to vest based on Semtech's attainment of pre-established revenue and non-GAAP operating income targets over a period of one, two, and three years, Semtech's relative total stockholder return over a period of three years, and the satisfaction of a service condition. The transaction represents the determination of the number of units eligible to vest based on the actual attainment of the performance condition with respect to the first year in the performance period. The vesting of the award with respect to the first year in the performance period will occur on June 4, 2025, subject to the satisfaction of the service condition.

F2 · derivative.expiration_date: The reporting person was granted performance stock units by Semtech in Semtech's fiscal year 2025 that are eligible to vest based on Semtech's attainment of pre-established revenue and non-GAAP operating income targets over a period of one, two, and three years, Semtech's relative total stockholder return over a period of three years, and the satisfaction of a service condition. The transaction represents the determination of the number of units eligible to vest based on the actual attainment of the performance condition with respect to the first year in the performance period. The vesting of the award with respect to the first year in the performance period will occur on June 4, 2025, subject to the satisfaction of the service condition.

SEC source: 0000088941-25-000081 · wk-form4_1743195042.xml · derivative · entry 1

Silberstein Asaf · CIK 0001514954 · EVP and COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,004

Underlying: Common Stock · 12,004 shares

Expires not disclosed

F1 · derivative.exercise_price: Each stock unit represents the contingent right to receive one share of Semtech common stock.

F2 · derivative.exercise_date: The reporting person was granted performance stock units by Semtech in Semtech's fiscal year 2025 that are eligible to vest based on Semtech's attainment of pre-established revenue and non-GAAP operating income targets over a period of one, two, and three years, Semtech's relative total stockholder return over a period of three years, and the satisfaction of a service condition. The transaction represents the determination of the number of units eligible to vest based on the actual attainment of the performance condition with respect to the first year in the performance period. The vesting of the award with respect to the first year in the performance period will occur on June 4, 2025, subject to the satisfaction of the service condition.

F2 · derivative.expiration_date: The reporting person was granted performance stock units by Semtech in Semtech's fiscal year 2025 that are eligible to vest based on Semtech's attainment of pre-established revenue and non-GAAP operating income targets over a period of one, two, and three years, Semtech's relative total stockholder return over a period of three years, and the satisfaction of a service condition. The transaction represents the determination of the number of units eligible to vest based on the actual attainment of the performance condition with respect to the first year in the performance period. The vesting of the award with respect to the first year in the performance period will occur on June 4, 2025, subject to the satisfaction of the service condition.

SEC source: 0000088941-25-000079 · wk-form4_1743194937.xml · derivative · entry 1

Sherazi Imran · CIK 0002028235 · SVP and GM

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,639

Underlying: Common Stock · 7,639 shares

Expires not disclosed

F1 · derivative.exercise_price: Each stock unit represents the contingent right to receive one share of Semtech common stock.

F2 · derivative.exercise_date: The reporting person was granted performance stock units by Semtech in Semtech's fiscal year 2025 that are eligible to vest based on Semtech's attainment of pre-established revenue and non-GAAP operating income targets over a period of one, two, and three years, Semtech's relative total stockholder return over a period of three years, and the satisfaction of a service condition. The transaction represents the determination of the number of units eligible to vest based on the actual attainment of the performance condition with respect to the first year in the performance period. The vesting of the award with respect to the first year in the performance period will occur on June 4, 2025, subject to the satisfaction of the service condition.

F2 · derivative.expiration_date: The reporting person was granted performance stock units by Semtech in Semtech's fiscal year 2025 that are eligible to vest based on Semtech's attainment of pre-established revenue and non-GAAP operating income targets over a period of one, two, and three years, Semtech's relative total stockholder return over a period of three years, and the satisfaction of a service condition. The transaction represents the determination of the number of units eligible to vest based on the actual attainment of the performance condition with respect to the first year in the performance period. The vesting of the award with respect to the first year in the performance period will occur on June 4, 2025, subject to the satisfaction of the service condition.

SEC source: 0000088941-25-000077 · wk-form4_1743194805.xml · derivative · entry 1

Rayabhari Madhusudhan · CIK 0001832524 · SVP and GM

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,897

Underlying: Common Stock · 10,897 shares

Expires not disclosed

F1 · derivative.exercise_price: Each stock unit represents the contingent right to receive one share of Semtech common stock.

F2 · derivative.exercise_date: The reporting person was granted performance stock units by Semtech in Semtech's fiscal year 2025 that are eligible to vest based on Semtech's attainment of pre-established revenue and non-GAAP operating income targets over a period of one, two, and three years, Semtech's relative total stockholder return over a period of three years, and the satisfaction of a service condition. The transaction represents the determination of the number of units eligible to vest based on the actual attainment of the performance condition with respect to the first year in the performance period. The vesting of the award with respect to the first year in the performance period will occur on June 4, 2025, subject to the satisfaction of the service condition.

F2 · derivative.expiration_date: The reporting person was granted performance stock units by Semtech in Semtech's fiscal year 2025 that are eligible to vest based on Semtech's attainment of pre-established revenue and non-GAAP operating income targets over a period of one, two, and three years, Semtech's relative total stockholder return over a period of three years, and the satisfaction of a service condition. The transaction represents the determination of the number of units eligible to vest based on the actual attainment of the performance condition with respect to the first year in the performance period. The vesting of the award with respect to the first year in the performance period will occur on June 4, 2025, subject to the satisfaction of the service condition.

SEC source: 0000088941-25-000075 · wk-form4_1743194703.xml · derivative · entry 1

Gray William Ross · CIK 0001961757 · SVP and GM

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,639

Underlying: Common Stock · 7,639 shares

Expires not disclosed

F1 · derivative.exercise_price: Each stock unit represents the contingent right to receive one share of Semtech common stock.

F2 · derivative.exercise_date: The reporting person was granted performance stock units by Semtech in Semtech's fiscal year 2025 that are eligible to vest based on Semtech's attainment of pre-established revenue and non-GAAP operating income targets over a period of one, two, and three years, Semtech's relative total stockholder return over a period of three years, and the satisfaction of a service condition. The transaction represents the determination of the number of units eligible to vest based on the actual attainment of the performance condition with respect to the first year in the performance period. The vesting of the award with respect to the first year in the performance period will occur on June 4, 2025, subject to the satisfaction of the service condition.

F2 · derivative.expiration_date: The reporting person was granted performance stock units by Semtech in Semtech's fiscal year 2025 that are eligible to vest based on Semtech's attainment of pre-established revenue and non-GAAP operating income targets over a period of one, two, and three years, Semtech's relative total stockholder return over a period of three years, and the satisfaction of a service condition. The transaction represents the determination of the number of units eligible to vest based on the actual attainment of the performance condition with respect to the first year in the performance period. The vesting of the award with respect to the first year in the performance period will occur on June 4, 2025, subject to the satisfaction of the service condition.

SEC source: 0000088941-25-000073 · wk-form4_1743194596.xml · derivative · entry 1

HOU HONG Q · CIK 0001156899 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 24,525

Underlying: Common Stock · 24,525 shares

Expires not disclosed

F1 · derivative.exercise_price: Each stock unit represents the contingent right to receive one share of Semtech common stock.

F2 · derivative.exercise_date: The reporting person was granted performance stock units by Semtech in Semtech's fiscal year 2025 that are eligible to vest based on Semtech's attainment of pre-established revenue and non-GAAP operating income targets over a period of one, two, and three years, Semtech's relative total stockholder return over a period of three years, and the satisfaction of a service condition. The transaction represents the determination of the number of units eligible to vest based on the actual attainment of the performance condition with respect to the first year in the performance period. The vesting of the award with respect to the first year in the performance period will occur on June 11, 2025, subject to the satisfaction of the service condition.

F2 · derivative.expiration_date: The reporting person was granted performance stock units by Semtech in Semtech's fiscal year 2025 that are eligible to vest based on Semtech's attainment of pre-established revenue and non-GAAP operating income targets over a period of one, two, and three years, Semtech's relative total stockholder return over a period of three years, and the satisfaction of a service condition. The transaction represents the determination of the number of units eligible to vest based on the actual attainment of the performance condition with respect to the first year in the performance period. The vesting of the award with respect to the first year in the performance period will occur on June 11, 2025, subject to the satisfaction of the service condition.

SEC source: 0000088941-25-000071 · wk-form4_1743194425.xml · derivative · entry 5

Lin Mark · CIK 0001994152 · EVP and CFO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 12,321

Underlying: Common Stock · 12,321 shares

Expires not disclosed

F3 · derivative.exercise_price: Each stock unit represents the contingent right to receive one share of Semtech common stock.

F4 · derivative.exercise_date: The reporting person was granted performance stock units by Semtech in Semtech's fiscal year 2025 that are eligible to vest based on Semtech's attainment of pre-established revenue and non-GAAP operating income targets over a period of one, two, and three years, Semtech's relative total stockholder return over a period of three years, and the satisfaction of a service condition. The transaction represents the determination of the number of units eligible to vest based on the actual attainment of the performance condition with respect to the first year in the performance period. The vesting of the award with respect to the first year in the performance period will occur on June 4, 2025, subject to the satisfaction of the service condition.

F4 · derivative.expiration_date: The reporting person was granted performance stock units by Semtech in Semtech's fiscal year 2025 that are eligible to vest based on Semtech's attainment of pre-established revenue and non-GAAP operating income targets over a period of one, two, and three years, Semtech's relative total stockholder return over a period of three years, and the satisfaction of a service condition. The transaction represents the determination of the number of units eligible to vest based on the actual attainment of the performance condition with respect to the first year in the performance period. The vesting of the award with respect to the first year in the performance period will occur on June 4, 2025, subject to the satisfaction of the service condition.

SEC source: 0000088941-25-000071 · wk-form4_1743194425.xml · nonDerivative · entry 2

Lin Mark · CIK 0001994152 · EVP and CFO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 16,388

SEC source: 0000088941-25-000071 · wk-form4_1743194425.xml · nonDerivative · entry 1

Lin Mark · CIK 0001994152 · EVP and CFO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 20,903

F1 · security: The reporting person was granted performance stock units by Semtech in Semtech's fiscal year 2024 that are eligible to vest based on Semtech's attainment of pre-established revenue and non-GAAP operating income targets over a period of one, two, and three years. This transaction represents the payment and vesting of the awards with respect to the second year in the performance period.

SEC source: 0000088941-25-000056 · wk-form4_1741652681.xml · derivative · entry 7

Rayabhari Madhusudhan · CIK 0001832524 · SVP and GM

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 4,260 shares

Expires not disclosed

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_price: Each stock unit is the economic equivalent of one share of Semtech common stock.

F4 · derivative.exercise_date: This grant vested in three annual installments beginning on March 8, 2023.

F4 · derivative.expiration_date: This grant vested in three annual installments beginning on March 8, 2023.