Leon Trefler - 01 Sep 2025 Form 4 Insider Report for PEGASYSTEMS INC (PEGA)

Role: Chief of Clients and Markets
Signature: /s/ Ewelina Kemp, Attorney-in-Fact for Leon Trefler
Issuer symbol: PEGA
Transactions as of: 01 Sep 2025
Net transactions value: -$33,339
Form type: 4
Filing time: 04 Sep 2025, 16:58:31 UTC
Previous filing: 10 Jun 2025
Next filing: 09 Sep 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Trefler Leon	Chief of Clients and Markets	C/O PEGASYSTEMS INC., 225 WYMAN STREET, STE 300, WALTHAM	/s/ Ewelina Kemp, Attorney-in-Fact for Leon Trefler	04 Sep 2025	0001480560

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	PEGA	Common stock	Options Exercise	$0	+1,176	+1%	$0.000000	116,085	01 Sep 2025	Direct	F1
transaction	PEGA	Common stock	Tax liability	$25,099	-463	-0.4%	$54.21	115,622	01 Sep 2025	Direct
transaction	PEGA	Common stock	Options Exercise	$0	+384	+0.33%	$0.000000	116,006	02 Sep 2025	Direct	F2
transaction	PEGA	Common stock	Tax liability	$8,240	-152	-0.13%	$54.21	115,854	02 Sep 2025	Direct	F3

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	PEGA	Restricted Stock Units	Options Exercise	$0	-1,176	-14%	$0.000000	7,052	01 Sep 2025	Common stock	1,176	$0.000000	Direct	F1, F4, F5
transaction	PEGA	Restricted Stock Units	Options Exercise	$0	-384	-33%	$0.000000	768	02 Sep 2025	Common stock	384	$0.000000	Direct	F2, F4, F5

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Represents a 5% vesting on September 1, 2025, with a release date of September 2, 2025, the first business day following vesting. The original grant was 11,754 restricted stock units, with 20% vesting on March 1, 2023, with the remaining 80% vesting in equal quarterly installments over the remaining four years.
F2	Represents a 5% vesting on September 2, 2025. The original grant was 3,843 restricted stock units, with 20% vesting on March 2, 2022, with the remaining 80% vesting in equal quarterly installments over the remaining four years.
F3	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 lower (on a pre-split basis) due to an administrative error.
F4	Each restricted stock unit represents the right to receive, following vesting, one share of the issuer's common stock.
F5	All share amounts in this Form 4 have been restated to reflect a 2-for-1 forward stock split of Pegasystems Inc.'s common stock effectuated on June 20, 2025.