EFSTATHIOS A. KOUNINIS - 01 Sep 2025 Form 4 Insider Report for PEGASYSTEMS INC (PEGA)

Role: SVP of Finance & CAO
Signature: /s/ Ewelina Kemp, Attorney-in-Fact for Efstathios A. Kouninis
Issuer symbol: PEGA
Transactions as of: 01 Sep 2025
Net transactions value: -$4,174
Form type: 4
Filing time: 04 Sep 2025, 16:54:22 UTC
Previous filing: 29 Jul 2025
Next filing: 09 Sep 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
KOUNINIS EFSTATHIOS A	SVP of Finance & CAO	C/O PEGASYSTEMS INC., 225 WYMAN STREET, STE 300, WALTHAM	/s/ Ewelina Kemp, Attorney-in-Fact for Efstathios A. Kouninis	04 Sep 2025	0001353196

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	PEGA	Common stock	Options Exercise	$0	+206		$0.000000	206	01 Sep 2025	Direct	F1
transaction	PEGA	Common stock	Tax liability	$2,765	-51	-25%	$54.21	155	01 Sep 2025	Direct
transaction	PEGA	Common stock	Options Exercise	$0	+106	+68%	$0.000000	261	02 Sep 2025	Direct	F2
transaction	PEGA	Common stock	Tax liability	$1,409	-26	-10%	$54.21	235	02 Sep 2025	Direct

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	-206	-14%	$0.000000	1,234	01 Sep 2025	Common stock	206	$0.000000	Direct	F1, F3, F4
transaction	PEGA	Restricted Stock Units	Options Exercise	$0	-106	-33%	$0.000000	212	02 Sep 2025	Common stock	106	$0.000000	Direct	F2, F3, F4

* 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 date following vesting. The original grant was 2,057 restricted stock units, with 20% vesting on March 1, 2023, and 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 1,057 restricted stock units, with 20% vesting on March 2, 2022, and the remaining 80% vesting in equal quarterly installments over the remaining four years.
F3	Each restricted stock unit represents the right to receive, following vesting, one share of the issuer's common stock.
F4	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.