Loeillot Olivier

SEC source: 0001628280-26-065238 · wk-form4_1791317904.xml · derivative · entry 4

Loeillot Olivier · CIK 0001995525 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 8,405

Underlying: Common Stock · 4,202 shares

Expires 2033-10-02

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 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 19, 2025.

F2 · derivative.exercise_date: 4,202 shares will vest on October 2, 2027. 4,203 shares will vest on October 2, 2028.

SEC source: 0001628280-26-065238 · wk-form4_1791317904.xml · nonDerivative · entry 3

Loeillot Olivier · CIK 0001995525 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 45,788

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 19, 2025.

SEC source: 0001628280-26-065238 · wk-form4_1791317904.xml · nonDerivative · entry 2

Loeillot Olivier · CIK 0001995525 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 49,990

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 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 19, 2025.

SEC source: 0001628280-26-065238 · wk-form4_1791317904.xml · nonDerivative · entry 1

Loeillot Olivier · CIK 0001995525 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 45,788

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 19, 2025.

SEC source: 0001628280-26-064889 · wk-form4_1791230479.xml · nonDerivative · entry 1

Loeillot Olivier · CIK 0001995525 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 47,121

F1 · shares: Represents the number of shares withheld by the Issuer to satisfy tax withholding obligations of the reporting person that arose upon the release of restricted stock units.

SEC source: 0001628280-26-063572 · wk-form4_1790366980.xml · derivative · entry 6

Loeillot Olivier · CIK 0001995525 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 9,085

Underlying: Common Stock · 4,542 shares

Expires 2035-03-01

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 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 19, 2025.

F3 · derivative.exercise_date: 4,542 shares will vest on March 1, 2027, and 4,543 shares will vest on March 1, 2028.

SEC source: 0001628280-26-063572 · wk-form4_1790366980.xml · derivative · entry 5

Loeillot Olivier · CIK 0001995525 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 12,607

Underlying: Common Stock · 8,404 shares

Expires 2033-10-02

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 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 19, 2025.

F2 · derivative.exercise_date: 4,202 shares will vest on each of October 2, 2026, and October 2, 2027. 4,203 shares will vest on October 2, 2028.

SEC source: 0001628280-26-063572 · wk-form4_1790366980.xml · nonDerivative · entry 4

Loeillot Olivier · CIK 0001995525 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 48,369

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 19, 2025.

SEC source: 0001628280-26-063572 · wk-form4_1790366980.xml · nonDerivative · entry 3

Loeillot Olivier · CIK 0001995525 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 52,911

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 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 19, 2025.

SEC source: 0001628280-26-063572 · wk-form4_1790366980.xml · nonDerivative · entry 2

Loeillot Olivier · CIK 0001995525 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 48,369

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 19, 2025.

SEC source: 0001628280-26-063572 · wk-form4_1790366980.xml · nonDerivative · entry 1

Loeillot Olivier · CIK 0001995525 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 56,773

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 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 19, 2025.

SEC source: 0001628280-26-063026 · wk-form4_1790107640.xml · derivative · entry 3

Loeillot Olivier · CIK 0001995525 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 5,426

Underlying: Common Stock · 5,426 shares

Expires 2034-09-03

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 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 19, 2025.

SEC source: 0001628280-26-063026 · wk-form4_1790107640.xml · nonDerivative · entry 2

Loeillot Olivier · CIK 0001995525 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 48,369

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 19, 2025.

SEC source: 0001628280-26-063026 · wk-form4_1790107640.xml · nonDerivative · entry 1

Loeillot Olivier · CIK 0001995525 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 53,795

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 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 19, 2025.

SEC source: 0001628280-26-060911 · wk-form4_1788898417.xml · nonDerivative · entry 2

Loeillot Olivier · CIK 0001995525 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 48,369

F2 · shares: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 19, 2025.

SEC source: 0001628280-26-060911 · wk-form4_1788898417.xml · nonDerivative · entry 1

Loeillot Olivier · CIK 0001995525 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 51,404

F1 · shares: Represents the number of shares withheld by the Issuer to satisfy the tax withholding obligations of the reporting person that arose upon the release of restricted stock units.

SEC source: 0001628280-26-058417 · wk-form4_1787342788.xml · derivative · entry 3

Loeillot Olivier · CIK 0001995525 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 10,852

Underlying: Common Stock · 5,426 shares

Expires 2034-09-03

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 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 19, 2025.

F2 · derivative.exercise_date: 5,426 shares will vest on each of September 3, 2026, and September 3, 2027.

SEC source: 0001628280-26-058417 · wk-form4_1787342788.xml · nonDerivative · entry 2

Loeillot Olivier · CIK 0001995525 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 54,246

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 19, 2025.

SEC source: 0001628280-26-058417 · wk-form4_1787342788.xml · nonDerivative · entry 1

Loeillot Olivier · CIK 0001995525 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 59,672

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 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 19, 2025.

SEC source: 0001193125-26-169682 · ownership.xml · nonDerivative · entry 1

Loeillot Olivier · CIK 0001995525 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 54,246

F1 · price: Sale of common stock was effected pursuant to a 10(b)5-1 trading plan adopted on August 19th, 2025.

SEC source: 0001193125-26-119036 · ownership.xml · derivative · entry 2

Loeillot Olivier · CIK 0001995525 · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 25,890

Underlying: Common Stock · 25,890 shares

Expires 2036-03-05

F2 · derivative.exercise_date: One third of the stock options will vest and become exercisable annually on March 5, 2027, March 5, 2028, and March 5, 2029.

SEC source: 0001193125-26-119036 · ownership.xml · nonDerivative · entry 1

Loeillot Olivier · CIK 0001995525 · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 58,078

F1 · shares: Mr. Loeillot was awarded 24,134 restricted stock units. Each restricted stock unit represents a contingent right to receive one share of Repligen Corporation's Common Stock. The restricted stock units vest in equal annual instalments over a three-year period beginning on the first anniversary of the grant date. The restricted stock units may be settled only by delivering shares of Repligen Corporation's Common Stock, and thus, the grant is being reported in Table 1 as allowed per SEC guidance.

SEC source: 0001193125-26-087595 · ownership.xml · nonDerivative · entry 2

Loeillot Olivier · CIK 0001995525 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 33,944

F1 · shares: Represents the number of shares withheld by the Issuer to satisfy tax withholding obligations of the reporting person that arose upon the release of restricted stock units.

SEC source: 0001193125-26-087595 · ownership.xml · nonDerivative · entry 1

Loeillot Olivier · CIK 0001995525 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 35,554

F1 · shares: Represents the number of shares withheld by the Issuer to satisfy tax withholding obligations of the reporting person that arose upon the release of restricted stock units.

SEC source: 0001193125-25-300642 · ownership.xml · nonDerivative · entry 1

Loeillot Olivier · CIK 0001995525 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 35,898

F1 · price: Sale of common stock was effected pursuant to a 10(b)5-1 trading plan adopted on December 12, 2024.

SEC source: 0001193125-25-231365 · ownership.xml · nonDerivative · entry 1

Loeillot Olivier · CIK 0001995525 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 42,939

F1 · shares: Represents the number of shares withheld by the Issuer to satisfy tax withholding obligations of the reporting person that arose upon the release of restricted stock units.

SEC source: 0001193125-25-195655 · ownership.xml · nonDerivative · entry 1

Loeillot Olivier · CIK 0001995525 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 44,187

F1 · shares: Represents the number of shares withheld by the Issuer to satisfy tax withholding obligations of the reporting person that arose upon the release of restricted stock units.

SEC source: 0000950170-25-031547 · ownership.xml · derivative · entry 2

Loeillot Olivier · CIK 0001995525 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,627

Underlying: Common Stock · 13,627 shares

Expires 2035-03-03

F2 · derivative.exercise_date: One third of the stock options will vest and become exercisable annually on March 3, 2026, March 3, 2027, and March 3, 2028.

SEC source: 0000950170-25-031547 · ownership.xml · nonDerivative · entry 1

Loeillot Olivier · CIK 0001995525 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 46,693

F1 · shares: Mr. Loeillot was awarded 14,480 restricted stock units. Each restricted stock unit represents a contingent right to receive one share of Repligen Corporation's Common Stock. The restricted stock units vest in equal annual instalments over a three-year period beginning on the first anniversary of the grant date. The restricted stock units may be settled only by delivering shares of Repligen Corporation's Common Stock, and thus, the grant is being reported in Table 1 as allowed per SEC guidance.

SEC source: 0000950170-25-030080 · ownership.xml · nonDerivative · entry 1

Loeillot Olivier · CIK 0001995525 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 32,213

F1 · shares: Represents the number of shares withheld by the Issuer to satisfy tax withholding obligations of the reporting person that arose upon the release of performance stock units.

SEC source: 0000950170-24-129622 · ownership.xml · nonDerivative · entry 1

Loeillot Olivier · CIK 0001995525 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 32,556

F1 · shares: Represents the number of shares withheld by the Issuer to satisfy tax withholding obligations of the reporting person that arose upon the release of restricted stock units.

SEC source: 0000950170-24-103643 · ownership.xml · derivative · entry 2

Loeillot Olivier · CIK 0001995525 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 16,278

Underlying: Common Stock · 16,278 shares

Expires 2034-09-03

F2 · derivative.exercise_date: One third of the stock options will vest and become exercisable annually on September 3, 2025, September 3, 2026, and September 3, 2027.

SEC source: 0000950170-24-103643 · ownership.xml · nonDerivative · entry 1

Loeillot Olivier · CIK 0001995525 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 33,417

F1 · shares: Mr. Loeillot was awarded 17,631 restricted stock units. Each restricted stock unit represents a contingent right to receive one share of Repligen Corporation's Common Stock. The restricted stock units vest in equal annual installments over a three-year period beginning on the first anniversary of the grant date. The restricted stock units may be settled only by delivering shares of Repligen Corporation's Common Stock, and thus, the grant is being reported in Table 1 as allowed per SEC guidance.

SEC source: 0000950170-24-023416 · ownership.xml · derivative · entry 2

Loeillot Olivier · CIK 0001995525 · President and CCO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,860

Underlying: Common Stock · 2,860 shares

Expires 2034-02-27

F2 · derivative.exercise_date: One third of the stock options will vest and become exercisable annually on February 27, 2025, February 27, 2026 and February 27, 2027.

SEC source: 0000950170-24-023416 · ownership.xml · nonDerivative · entry 1

Loeillot Olivier · CIK 0001995525 · President and CCO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,786

F1 · shares: Mr. Loeillot was awarded 2,880 restricted stock units. Each restricted stock unit represents a contingent right to receive one share of Repligen Corporation's Common Stock. The restricted stock units vest in equal annual instalments over a three-year period beginning on the first anniversary of the grant date. The restricted stock units may be settled only by delivering shares of Repligen Corporation's Common Stock, and thus, the grant is being reported in Table 1 as allowed per SEC guidance.

SEC source: 0000950170-23-051753 · ownership.xml · derivative · entry 2

Loeillot Olivier · CIK 0001995525 · President and CCO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 24,236

Underlying: Common Stock · 24,236 shares

Expires 2033-10-02

F2 · derivative.exercise_date: The shares vest in equal annual installments over a five-year period with each such vesting date occurring on the anniversary of the grant date.

SEC source: 0000950170-23-051753 · ownership.xml · nonDerivative · entry 1

Loeillot Olivier · CIK 0001995525 · President and CCO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,906

F1 · shares: Mr. Loeillot was awarded 12,906 restricted stock units. Each restricted stock unit represents a contingent right to receive one share of Repligen Corporation's Common Stock. The restricted stock units vest in equal installments over a five-year period with each such vesting date occurring on the anniversary of the grant date. The restricted stock units may be settled only by delivering shares of Repligen Corporation's Common Stock, and thus, the grant is being reported in Table 1 as allowed per SEC guidance.