TREFLER ALAN

SEC source: 0001032235-25-000008 · wk-form4_1757019651.xml · nonDerivative · entry 6

TREFLER ALAN · CIK 0001032235 · Director · C.E.O. & Chairman · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 32,919,188

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 · shares: Represents a 5% vesting on September 2, 2025. The original grant was 24,976 restricted stock units, with 20% vesting on March 2, 2022, and the remaining 80% vesting in equal quarterly installments over the remaining four years.

SEC source: 0001032235-25-000006 · wk-form4_1754600952.xml · nonDerivative · entry 8

TREFLER ALAN · CIK 0001032235 · Director · C.E.O. & Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 32,916,692

F1 · shares: Sold pursuant to a pre-arranged trading plan adopted by Mr. Trefler November 6, 2024 under Rule 10b5-1 of the Securities Exchange Act of 1934, as amended.

F4 · price: Represents the weighted average of sale prices, ranging from $56.86 to $57.69. The individual has provided the Company, and undertakes to provide to the staff of the Security and Exchange Commission or any security holder of the Company, upon request, full information regarding the number of shares sold at each separate price.

SEC source: 0001032235-25-000006 · wk-form4_1754600952.xml · nonDerivative · entry 7

TREFLER ALAN · CIK 0001032235 · Director · C.E.O. & Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 32,961,692

F1 · shares: Sold pursuant to a pre-arranged trading plan adopted by Mr. Trefler November 6, 2024 under Rule 10b5-1 of the Securities Exchange Act of 1934, as amended.

F3 · price: Represents the weighted average of sale prices, ranging from $57.94 to $58.75. The individual has provided the Company, and undertakes to provide to the staff of the Security and Exchange Commission or any security holder of the Company, upon request, full information regarding the number of shares sold at each separate price.

SEC source: 0001032235-25-000006 · wk-form4_1754600952.xml · nonDerivative · entry 6

TREFLER ALAN · CIK 0001032235 · Director · C.E.O. & Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 32,969,156

F1 · shares: Sold pursuant to a pre-arranged trading plan adopted by Mr. Trefler November 6, 2024 under Rule 10b5-1 of the Securities Exchange Act of 1934, as amended.

F2 · price: Represents the weighted average of sale prices, ranging from $56.94 to $57.93. The individual has provided the Company, and undertakes to provide to the staff of the Security and Exchange Commission or any security holder of the Company, upon request, full information regarding the number of shares sold at each separate price.

SEC source: 0001013857-25-000201 · wk-form4_1752527445.xml · nonDerivative · entry 7

TREFLER ALAN · CIK 0001032235 · Director · C.E.O. & Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 33,006,692

F1 · shares: Sold pursuant to a pre-arranged trading plan adopted by Mr. Trefler November 6, 2024 under Rule 10b5-1 of the Securities Exchange Act of 1934, as amended.

F3 · price: Represents the weighted average of sale prices, ranging from $51.98 to $52.82. The individual has provided the Company, and undertakes to provide to the staff of the Security and Exchange Commission or any security holder of the Company, upon request, full information regarding the number of shares sold at each separate price.

SEC source: 0001013857-25-000201 · wk-form4_1752527445.xml · nonDerivative · entry 6

TREFLER ALAN · CIK 0001032235 · Director · C.E.O. & Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 33,018,928

F1 · shares: Sold pursuant to a pre-arranged trading plan adopted by Mr. Trefler November 6, 2024 under Rule 10b5-1 of the Securities Exchange Act of 1934, as amended.

F2 · price: Represents the weighted average of sale prices, ranging from $50.98 to $51.97. The individual has provided the Company, and undertakes to provide to the staff of the Security and Exchange Commission or any security holder of the Company, upon request, full information regarding the number of shares sold at each separate price.

SEC source: 0001013857-25-000199 · wk-form4_1752268142.xml · nonDerivative · entry 6

TREFLER ALAN · CIK 0001032235 · Director · C.E.O. & Chairman · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 33,051,692

F1 · shares: Sold pursuant to a pre-arranged trading plan adopted by Mr. Trefler November 6, 2024 under Rule 10b5-1 of the Securities Exchange Act of 1934, as amended.

F2 · price: Represents the weighted average of sale prices, ranging from $53.04 to $53.95. The individual has provided the Company, and undertakes to provide to the staff of the Security and Exchange Commission or any security holder of the Company, upon request, full information regarding the number of shares sold at each separate price.

F3 · balance_after: Beneficial ownership totals reflect Pegasystems Inc.'s 2-for-1 forward stock split effectuated on June 20, 2025, and a correction to the number of shares directly held, which was previously incorrectly reported as higher (on a pre-split basis) due to an administrative error.

SEC source: 0001013857-25-000193 · wk-form4_1750712654.xml · nonDerivative · entry 7

TREFLER ALAN · CIK 0001032235 · Director · C.E.O. & Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 17,027,892

F1 · shares: Sold pursuant to a pre-arranged trading plan adopted by Mr. Trefler November 6, 2024 under Rule 10b5-1 of the Securities Exchange Act of 1934, as amended.

F3 · price: Represents the weighted average of sale prices, ranging from $101.06 to $101.46. The individual has provided the Company, and undertakes to provide to the staff of the Security and Exchange Commission or any security holder of the Company, upon request, full information regarding the number of shares sold at each separate price.

SEC source: 0001013857-25-000193 · wk-form4_1750712654.xml · nonDerivative · entry 6

TREFLER ALAN · CIK 0001032235 · Director · C.E.O. & Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 17,032,376

F1 · shares: Sold pursuant to a pre-arranged trading plan adopted by Mr. Trefler November 6, 2024 under Rule 10b5-1 of the Securities Exchange Act of 1934, as amended.

F2 · price: Represents the weighted average of sale prices, ranging from $100.06 to $101.05. The individual has provided the Company, and undertakes to provide to the staff of the Security and Exchange Commission or any security holder of the Company, upon request, full information regarding the number of shares sold at each separate price.

SEC source: 0001013857-25-000189 · wk-form4_1750280546.xml · nonDerivative · entry 8

TREFLER ALAN · CIK 0001032235 · Director · C.E.O. & Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 17,059,392

F1 · shares: Sold pursuant to a pre-arranged trading plan adopted by Mr. Trefler November 6, 2024 under Rule 10b5-1 of the Securities Exchange Act of 1934, as amended.

F4 · price: Represents the weighted average of sale prices, ranging from $101.49 to $102.07. The individual has provided the Company, and undertakes to provide to the staff of the Security and Exchange Commission or any security holder of the Company, upon request, full information regarding the number of shares sold at each separate price.

SEC source: 0001013857-25-000189 · wk-form4_1750280546.xml · nonDerivative · entry 7

TREFLER ALAN · CIK 0001032235 · Director · C.E.O. & Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 17,066,089

F1 · shares: Sold pursuant to a pre-arranged trading plan adopted by Mr. Trefler November 6, 2024 under Rule 10b5-1 of the Securities Exchange Act of 1934, as amended.

F3 · price: Represents the weighted average of sale prices, ranging from $100.50 to $101.48. The individual has provided the Company, and undertakes to provide to the staff of the Security and Exchange Commission or any security holder of the Company, upon request, full information regarding the number of shares sold at each separate price.

SEC source: 0001013857-25-000189 · wk-form4_1750280546.xml · nonDerivative · entry 6

TREFLER ALAN · CIK 0001032235 · Director · C.E.O. & Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 17,087,197

F1 · shares: Sold pursuant to a pre-arranged trading plan adopted by Mr. Trefler November 6, 2024 under Rule 10b5-1 of the Securities Exchange Act of 1934, as amended.

F2 · price: Represents the weighted average of sale prices, ranging from $99.49 to $100.48. The individual has provided the Company, and undertakes to provide to the staff of the Security and Exchange Commission or any security holder of the Company, upon request, full information regarding the number of shares sold at each separate price.

SEC source: 0001013857-25-000154 · wk-form4_1748986057.xml · derivative · entry 8

TREFLER ALAN · CIK 0001032235 · Director · C.E.O. & Chairman · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,746

Underlying: Common stock · 1,249 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.

F4 · security: Each restricted stock unit represents the right to receive, following vesting, one share of the issuer's common stock.

F1 · shares: Represents a 5% vesting on June 2, 2025. The original grant was 24,976 restricted stock units, with 20% vesting on March 2, 2022, and the remaining 80% vesting in equal quarterly installments over the remaining four years.

F5 · derivative.expiration_date: Once vested, the shares of common stock are not subject to expiration.

SEC source: 0001013857-25-000154 · wk-form4_1748986057.xml · nonDerivative · entry 7

TREFLER ALAN · CIK 0001032235 · Director · C.E.O. & Chairman · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,090,892

F2 · shares: Tendered to issuer to satisfy tax withholding obligations of the reporting person, exempted pursuant to Rule 16b-3(e).

F3 · balance_after: Does not include shares of common stock subject to unvested restricted stock units and/or options awards.

SEC source: 0001013857-25-000154 · wk-form4_1748986057.xml · nonDerivative · entry 6

TREFLER ALAN · CIK 0001032235 · Director · C.E.O. & Chairman · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,091,309

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 · shares: Represents a 5% vesting on June 2, 2025. The original grant was 24,976 restricted stock units, with 20% vesting on March 2, 2022, and the remaining 80% vesting in equal quarterly installments over the remaining four years.

SEC source: 0001013857-25-000142 · wk-form4_1748638022.xml · nonDerivative · entry 7

TREFLER ALAN · CIK 0001032235 · Director · C.E.O. & Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 17,090,060

F1 · shares: Sold pursuant to a pre-arranged trading plan adopted by Mr. Trefler November 6, 2024 under Rule 10b5-1 of the Securities Exchange Act of 1934, as amended.

F3 · price: Represents the weighted average of sale prices, ranging from $97.15 to $97.28 . The individual has provided the Company, and undertakes to provide to the staff of the Security and Exchange Commission or any security holder of the Company, upon request, full information regarding the number of shares sold at each separate price.

F4 · balance_after: Does not include shares of common stock subject to unvested restricted stock units and/or options awards.

SEC source: 0001013857-25-000142 · wk-form4_1748638022.xml · nonDerivative · entry 6

TREFLER ALAN · CIK 0001032235 · Director · C.E.O. & Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 17,092,569

F1 · shares: Sold pursuant to a pre-arranged trading plan adopted by Mr. Trefler November 6, 2024 under Rule 10b5-1 of the Securities Exchange Act of 1934, as amended.

F2 · price: Represents the weighted average of sale prices, ranging from $96.15 to $97.14 . The individual has provided the Company, and undertakes to provide to the staff of the Security and Exchange Commission or any security holder of the Company, upon request, full information regarding the number of shares sold at each separate price.

SEC source: 0001013857-25-000140 · wk-form4_1748466631.xml · nonDerivative · entry 8

TREFLER ALAN · CIK 0001032235 · Director · C.E.O. & Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 17,121,560

F1 · shares: Sold pursuant to a pre-arranged trading plan adopted by Mr. Trefler November 6, 2024 under Rule 10b5-1 of the Securities Exchange Act of 1934, as amended.

F4 · price: Represents the weighted average of sale prices, ranging from $97.66 to $97.73. The individual has provided the Company, and undertakes to provide to the staff of the Security and Exchange Commission or any security holder of the Company, upon request, full information regarding the number of shares sold at each separate price.

F5 · balance_after: Does not include shares of common stock subject to unvested restricted stock units and/or options awards.

SEC source: 0001013857-25-000140 · wk-form4_1748466631.xml · nonDerivative · entry 7

TREFLER ALAN · CIK 0001032235 · Director · C.E.O. & Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 17,121,739

F1 · shares: Sold pursuant to a pre-arranged trading plan adopted by Mr. Trefler November 6, 2024 under Rule 10b5-1 of the Securities Exchange Act of 1934, as amended.

F3 · price: Represents the weighted average of sale prices, ranging from $96.64 to $97.61. The individual has provided the Company, and undertakes to provide to the staff of the Security and Exchange Commission or any security holder of the Company, upon request, full information regarding the number of shares sold at each separate price.

SEC source: 0001013857-25-000140 · wk-form4_1748466631.xml · nonDerivative · entry 6

TREFLER ALAN · CIK 0001032235 · Director · C.E.O. & Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 17,135,608

F1 · shares: Sold pursuant to a pre-arranged trading plan adopted by Mr. Trefler November 6, 2024 under Rule 10b5-1 of the Securities Exchange Act of 1934, as amended.

F2 · price: Represents the weighted average of sale prices, ranging from $95.63 to $96.62. The individual has provided the Company, and undertakes to provide to the staff of the Security and Exchange Commission or any security holder of the Company, upon request, full information regarding the number of shares sold at each separate price.

SEC source: 0001013857-25-000099 · wk-form4_1745269789.xml · nonDerivative · entry 10

TREFLER ALAN · CIK 0001032235 · Director · C.E.O. & Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 17,153,060

F1 · shares: Sold pursuant to a pre-arranged trading plan adopted by Mr. Trefler November 6, 2024 under Rule 10b5-1 of the Securities Exchange Act of 1934, as amended.

F6 · price: Represents the weighted average of sale prices, ranging from $69.08 to $69.35. The individual has provided the Company, and undertakes to provide to the staff of the Securities and Exchange Commission or any security holder of the Company, upon request, full information regarding the number of shares sold at each separate price.

F7 · balance_after: Does not include shares of common stock subject to unvested restricted stock units and/or options awards.

SEC source: 0001013857-25-000099 · wk-form4_1745269789.xml · nonDerivative · entry 9

TREFLER ALAN · CIK 0001032235 · Director · C.E.O. & Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 17,154,132

F1 · shares: Sold pursuant to a pre-arranged trading plan adopted by Mr. Trefler November 6, 2024 under Rule 10b5-1 of the Securities Exchange Act of 1934, as amended.

F5 · price: Represents the weighted average of sale prices, ranging from $68.01 to $69.00. The individual has provided the Company, and undertakes to provide to the staff of the Securities and Exchange Commission or any security holder of the Company, upon request, full information regarding the number of shares sold at each separate price.

SEC source: 0001013857-25-000197 · wk-form4a_1752267941.xml · nonDerivative · entry 10

TREFLER ALAN · CIK 0001032235 · Director · C.E.O. & Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 17,153,114

F1 · shares: Sold pursuant to a pre-arranged trading plan adopted by Mr. Trefler November 6, 2024 under Rule 10b5-1 of the Securities Exchange Act of 1934, as amended.

F8 · price: Represents the weighted average of sale prices, ranging from $69.08 to $69.35. The individual has provided the Company, and undertakes to provide to the staff of the Securities and Exchange Commission or any security holder of the Company, upon request, full information regarding the number of shares sold at each separate price.

F7 · balance_after: The original Form 4, filed on April 21, 2025, reflected an administrative error in the amount of shares sold being overstated by 54 shares, which then led to the underreporting of Mr. Trefler's beneficial ownership by the same. This corrected form reflects the increase of Mr. Trefler's beneficial ownership by 54 shares.

SEC source: 0001013857-25-000197 · wk-form4a_1752267941.xml · nonDerivative · entry 9

TREFLER ALAN · CIK 0001032235 · Director · C.E.O. & Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 17,154,186

F1 · shares: Sold pursuant to a pre-arranged trading plan adopted by Mr. Trefler November 6, 2024 under Rule 10b5-1 of the Securities Exchange Act of 1934, as amended.

F5 · shares: The original form 4, filed on April 21, 2025, is amended to correct an administrative error which overstated the amount of shares sold in this transaction by 54 shares.

F6 · price: Represents the weighted average of sale prices, ranging from $68.01 to $69.00. The individual has provided the Company, and undertakes to provide to the staff of the Securities and Exchange Commission or any security holder of the Company, upon request, full information regarding the number of shares sold at each separate price.

F7 · balance_after: The original Form 4, filed on April 21, 2025, reflected an administrative error in the amount of shares sold being overstated by 54 shares, which then led to the underreporting of Mr. Trefler's beneficial ownership by the same. This corrected form reflects the increase of Mr. Trefler's beneficial ownership by 54 shares.

SEC source: 0001013857-25-000099 · wk-form4_1745269789.xml · nonDerivative · entry 8

TREFLER ALAN · CIK 0001032235 · Director · C.E.O. & Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 17,184,614

F1 · shares: Sold pursuant to a pre-arranged trading plan adopted by Mr. Trefler November 6, 2024 under Rule 10b5-1 of the Securities Exchange Act of 1934, as amended.

F4 · price: Represents the weighted average of sale prices, ranging from $69.35 to $69.95. The individual has provided the Company, and undertakes to provide to the staff of the Securities and Exchange Commission or any security holder of the Company, upon request, full information regarding the number of shares sold at each separate price.

SEC source: 0001013857-25-000099 · wk-form4_1745269789.xml · nonDerivative · entry 7

TREFLER ALAN · CIK 0001032235 · Director · C.E.O. & Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 17,186,163

F1 · shares: Sold pursuant to a pre-arranged trading plan adopted by Mr. Trefler November 6, 2024 under Rule 10b5-1 of the Securities Exchange Act of 1934, as amended.

F3 · price: Represents the weighted average of sale prices, ranging from $68.38 to $69.34. The individual has provided the Company, and undertakes to provide to the staff of the Securities and Exchange Commission or any security holder of the Company, upon request, full information regarding the number of shares sold at each separate price.

SEC source: 0001013857-25-000099 · wk-form4_1745269789.xml · nonDerivative · entry 6

TREFLER ALAN · CIK 0001032235 · Director · C.E.O. & Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 17,201,164

F1 · shares: Sold pursuant to a pre-arranged trading plan adopted by Mr. Trefler November 6, 2024 under Rule 10b5-1 of the Securities Exchange Act of 1934, as amended.

F2 · price: Represents the weighted average of sale prices, ranging from $67.35 to $68.33. The individual has provided the Company, and undertakes to provide to the staff of the Securities and Exchange Commission or any security holder of the Company, upon request, full information regarding the number of shares sold at each separate price.

SEC source: 0001013857-25-000197 · wk-form4a_1752267941.xml · nonDerivative · entry 8

TREFLER ALAN · CIK 0001032235 · Director · C.E.O. & Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 17,184,614

F1 · shares: Sold pursuant to a pre-arranged trading plan adopted by Mr. Trefler November 6, 2024 under Rule 10b5-1 of the Securities Exchange Act of 1934, as amended.

F4 · price: Represents the weighted average of sale prices, ranging from $69.35 to $69.95. The individual has provided the Company, and undertakes to provide to the staff of the Securities and Exchange Commission or any security holder of the Company, upon request, full information regarding the number of shares sold at each separate price.

SEC source: 0001013857-25-000197 · wk-form4a_1752267941.xml · nonDerivative · entry 7

TREFLER ALAN · CIK 0001032235 · Director · C.E.O. & Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 17,186,163

F1 · shares: Sold pursuant to a pre-arranged trading plan adopted by Mr. Trefler November 6, 2024 under Rule 10b5-1 of the Securities Exchange Act of 1934, as amended.

F3 · price: Represents the weighted average of sale prices, ranging from $68.38 to $69.34. The individual has provided the Company, and undertakes to provide to the staff of the Securities and Exchange Commission or any security holder of the Company, upon request, full information regarding the number of shares sold at each separate price.

SEC source: 0001013857-25-000197 · wk-form4a_1752267941.xml · nonDerivative · entry 6

TREFLER ALAN · CIK 0001032235 · Director · C.E.O. & Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 17,201,164

F1 · shares: Sold pursuant to a pre-arranged trading plan adopted by Mr. Trefler November 6, 2024 under Rule 10b5-1 of the Securities Exchange Act of 1934, as amended.

F2 · price: Represents the weighted average of sale prices, ranging from $67.35 to $68.33. The individual has provided the Company, and undertakes to provide to the staff of the Securities and Exchange Commission or any security holder of the Company, upon request, full information regarding the number of shares sold at each separate price.

SEC source: 0001013857-25-000083 · wk-form4_1741899766.xml · nonDerivative · entry 7

TREFLER ALAN · CIK 0001032235 · Director · C.E.O. & Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 17,216,114

F1 · shares: Sold pursuant to a pre-arranged trading plan adopted by Mr. Trefler November 6, 2024 under Rule 10b5-1 of the Securities Exchange Act of 1934, as amended.

F3 · price: Represents the weighted average of sale prices, ranging from $71.59 to $73.27. The individual has provided the Company, and undertakes to provide to the staff of the Security and Exchange Commission or any security holder of the Company, upon request, full information regarding the number of shares sold at each separate price.

F4 · balance_after: Does not include shares of common stock subject to unvested restricted stock units and/or options awards.

SEC source: 0001013857-25-000083 · wk-form4_1741899766.xml · nonDerivative · entry 6

TREFLER ALAN · CIK 0001032235 · Director · C.E.O. & Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 17,247,614

F1 · shares: Sold pursuant to a pre-arranged trading plan adopted by Mr. Trefler November 6, 2024 under Rule 10b5-1 of the Securities Exchange Act of 1934, as amended.

F2 · price: Represents the weighted average of sale prices, ranging from $69.77 to $71.83. The individual has provided the Company, and undertakes to provide to the staff of the Securities and Exchange Commission or any security holder of the Company, upon request, full information regarding the number of shares sold at each separate price.

SEC source: 0001013857-25-000067 · wk-form4_1741301131.xml · derivative · entry 7

TREFLER ALAN · CIK 0001032235 · Director · C.E.O. & Chairman · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 225,009

Underlying: Common stock · 225,009 shares

Expires 2035-03-04

F2 · shares: Options will vest 25% on March 4, 2026, with the remaining 75% vesting in equal quarterly installments over the next three years.

SEC source: 0001013857-25-000056 · wk-form4_1741127950.xml · derivative · entry 11

TREFLER ALAN · CIK 0001032235 · Director · C.E.O. & Chairman · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common stock · 1,393 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.

F5 · security: Each restricted stock unit represents the right to receive, following vesting, one share of the issuer's common stock.

F3 · shares: Represents a 5% vesting on March 3, 2025. The original grant was 27,862 restricted stock units, with 20% vesting on March 3, 2021, and the remaining 80% vesting in equal quarterly installments over the remaining four years.

F6 · derivative.expiration_date: Once vested, the shares of common stock are not subject to expiration.

SEC source: 0001013857-25-000056 · wk-form4_1741127950.xml · derivative · entry 10

TREFLER ALAN · CIK 0001032235 · Director · C.E.O. & Chairman · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,995

Underlying: Common stock · 1,249 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.

F5 · security: Each restricted stock unit represents the right to receive, following vesting, one share of the issuer's common stock.

F1 · shares: Represents a 5% vesting on March 2, 2025, with a release date of March 3, 2025, the first business day following vesting. The original grant was 24,976 restricted stock units, with 20% vesting on March 2, 2022, with the remaining 80% vesting in equal quarterly installments over the remaining four years.

F6 · derivative.expiration_date: Once vested, the shares of common stock are not subject to expiration.

SEC source: 0001013857-25-000056 · wk-form4_1741127950.xml · nonDerivative · entry 9

TREFLER ALAN · CIK 0001032235 · Director · C.E.O. & Chairman · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,279,114

F2 · shares: Tendered to issuer to satisfy tax withholding obligations of the reporting person, exempted pursuant to Rule 16b-3(e).

F4 · balance_after: Does not include shares of common stock subject to unvested restricted stock units and/or options awards.

SEC source: 0001013857-25-000056 · wk-form4_1741127950.xml · nonDerivative · entry 8

TREFLER ALAN · CIK 0001032235 · Director · C.E.O. & Chairman · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,279,523

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.

F3 · shares: Represents a 5% vesting on March 3, 2025. The original grant was 27,862 restricted stock units, with 20% vesting on March 3, 2021, and the remaining 80% vesting in equal quarterly installments over the remaining four years.

SEC source: 0001013857-25-000056 · wk-form4_1741127950.xml · nonDerivative · entry 7

TREFLER ALAN · CIK 0001032235 · Director · C.E.O. & Chairman · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,278,130

F2 · shares: Tendered to issuer to satisfy tax withholding obligations of the reporting person, exempted pursuant to Rule 16b-3(e).

SEC source: 0001013857-25-000056 · wk-form4_1741127950.xml · nonDerivative · entry 6

TREFLER ALAN · CIK 0001032235 · Director · C.E.O. & Chairman · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,278,535

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 · shares: Represents a 5% vesting on March 2, 2025, with a release date of March 3, 2025, the first business day following vesting. The original grant was 24,976 restricted stock units, with 20% vesting on March 2, 2022, with the remaining 80% vesting in equal quarterly installments over the remaining four years.

SEC source: 0001013857-25-000044 · wk-form4_1740693634.xml · nonDerivative · entry 7

TREFLER ALAN · CIK 0001032235 · Director · C.E.O. & Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 17,277,286

F1 · shares: Sold pursuant to a pre-arranged trading plan adopted by Mr. Trefler November 6, 2024 under Rule 10b5-1 of the Securities Exchange Act of 1934, as amended.

F3 · price: Represents the weighted average of sale prices, ranging from $78.35 to $80.48. The individual has provided the Company, and undertakes to provide to the staff of the Security and Exchange Commission or any security holder of the Company, upon request, full information regarding the number of shares sold at each separate price.

F4 · balance_after: Does not include shares of common stock subject to unvested restricted stock units and/or options awards.

SEC source: 0001013857-25-000044 · wk-form4_1740693634.xml · nonDerivative · entry 6

TREFLER ALAN · CIK 0001032235 · Director · C.E.O. & Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 17,308,786

F1 · shares: Sold pursuant to a pre-arranged trading plan adopted by Mr. Trefler November 6, 2024 under Rule 10b5-1 of the Securities Exchange Act of 1934, as amended.

F2 · price: Represents the weighted average of sale prices, ranging from $75.83 to $78.64. The individual has provided the Company, and undertakes to provide to the staff of the Security and Exchange Commission or any security holder of the Company, upon request, full information regarding the number of shares sold at each separate price.

SEC source: 0001013857-25-000034 · wk-form4_1739571886.xml · derivative · entry 7

TREFLER ALAN · CIK 0001032235 · Director · C.E.O. & Chairman · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 241,636

Underlying: Common stock · 181,227 shares

Expires 2033-03-07

F2 · balance_after: On March 7, 2023, the reporting person was granted an option to purchase 241,636 shares of common stock. The option vests in two instalments, with up to 25% to vest on the first anniversary of the date of grant based on the Pegasystems' satisfaction of certain performance criteria for the fiscal year ended December 31, 2023, and with up to 75% to vest on the second anniversary of the date of grant based on Pegasystems' satisfaction of certain performance criteria for the fiscal year ended December 31, 2024. The performance criteria for the fiscal year ended December 31, 2024 were met in full, resulting in vesting of the option as to 181,227 shares.

SEC source: 0001013857-24-000287 · wk-form4_1735336695.xml · nonDerivative · entry 6

TREFLER ALAN · CIK 0001032235 · Director · C.E.O. & Chairman · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,340,286

F1 · shares: Gifts made to family members and to charitable organizations, including the Trefler Foundation. Mr. Trefler is a Trustee of the Trefler Foundation. Mr. Trefler has no pecuniary interest in shares held by the Trefler Foundation. He retains voting and dispositive control over such shares.

F2 · balance_after: Does not include shares of common stock subject to unvested restricted stock units and/or options awards.

SEC source: 0001013857-24-000267 · wk-form4_1733350314.xml · derivative · entry 8

TREFLER ALAN · CIK 0001032235 · Director · C.E.O. & Chairman · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,393

Underlying: Common stock · 1,393 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.

F4 · security: Each restricted stock unit represents the right to receive, following vesting, one share of the issuer's common stock.

F1 · shares: Represents a 5% vesting on December 3, 2024. The original grant was 27,862 restricted stock units, with 20% vesting on March 3, 2021, and the remaining 80% vesting in equal quarterly installments over the remaining four years.

F5 · derivative.expiration_date: Once vested, the shares of common stock are not subject to expiration.

SEC source: 0001013857-24-000267 · wk-form4_1733350314.xml · nonDerivative · entry 7

TREFLER ALAN · CIK 0001032235 · Director · C.E.O. & Chairman · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,365,386

F2 · shares: Tendered to issuer to satisfy tax withholding obligations of the reporting person, exempted pursuant to Rule 16b-3(e).

F3 · balance_after: Does not include shares of common stock subject to unvested restricted stock units and/or options awards.

SEC source: 0001013857-24-000267 · wk-form4_1733350314.xml · nonDerivative · entry 6

TREFLER ALAN · CIK 0001032235 · Director · C.E.O. & Chairman · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,366,060

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 · shares: Represents a 5% vesting on December 3, 2024. The original grant was 27,862 restricted stock units, with 20% vesting on March 3, 2021, and the remaining 80% vesting in equal quarterly installments over the remaining four years.

SEC source: 0001013857-24-000255 · wk-form4_1733264961.xml · derivative · entry 8

TREFLER ALAN · CIK 0001032235 · Director · C.E.O. & Chairman · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,244

Underlying: Common stock · 1,249 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.

F4 · security: Each restricted stock unit represents the right to receive, following vesting, one share of the issuer's common stock.

F1 · shares: Represents a 5% vesting on December 2, 2024. The original grant was 24,976 restricted stock units, with 20% vesting on March 2, 2022, with the remaining 80% vesting in equal quarterly installments over the remaining four years.

F5 · derivative.expiration_date: Once vested, the shares of common stock are not subject to expiration.

SEC source: 0001013857-24-000255 · wk-form4_1733264961.xml · nonDerivative · entry 7

TREFLER ALAN · CIK 0001032235 · Director · C.E.O. & Chairman · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,364,667

F2 · shares: Tendered to issuer to satisfy tax withholding obligations of the reporting person, exempted pursuant to Rule 16b-3(e).

F3 · balance_after: Does not include shares of common stock subject to unvested restricted stock units and/or options awards.

SEC source: 0001013857-24-000255 · wk-form4_1733264961.xml · nonDerivative · entry 6

TREFLER ALAN · CIK 0001032235 · Director · C.E.O. & Chairman · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,365,271

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 · shares: Represents a 5% vesting on December 2, 2024. The original grant was 24,976 restricted stock units, with 20% vesting on March 2, 2022, with the remaining 80% vesting in equal quarterly installments over the remaining four years.

SEC source: 0001013857-24-000216 · wk-form4_1726520975.xml · nonDerivative · entry 7

TREFLER ALAN · CIK 0001032235 · Director · C.E.O. & Chairman · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · Alan N. Trefler Irrevocable Non-GST Trust of 2022

Disclosed balance after: 1,605,503

F7 · balance_after: Reflects transfer of shares from the Alan N. Trefler Grantor Retained Annuity Trust I of 2022.