Leon Trefler - 05 Dec 2025 Form 4 Insider Report for PEGASYSTEMS INC (PEGA)

Role: Chief of Clients and Markets
Signature: /s/Kathryn Leach, Attorney-in-Fact for Leon Trefler
Issuer symbol: PEGA
Transactions as of: 05 Dec 2025
Net transactions value: -$112,294
Form type: 4
Filing time: 09 Dec 2025, 16:52:31 UTC
Previous filing: 03 Dec 2025
Next filing: 23 Dec 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/Kathryn Leach, Attorney-in-Fact for Leon Trefler	09 Dec 2025	0001480560

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	PEGA	Common stock	Options Exercise	$0	+2,202	+1.8%	$0.000000	121,958	05 Dec 2025	Direct	F1
transaction	PEGA	Common stock	Tax liability	$49,419	-867	-0.71%	$57.00	121,091	05 Dec 2025	Direct
transaction	PEGA	Common stock	Options Exercise	$0	+2,658	+2.2%	$0.000000	123,749	07 Dec 2025	Direct	F1
transaction	PEGA	Common stock	Tax liability	$62,875	-1,046	-0.85%	$60.11	122,703	07 Dec 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	-2,202	-10%	$0.000000	19,810	05 Dec 2025	Common stock	2,202	$0.000000	Direct	F1, F2
transaction	PEGA	Restricted Stock Units	Options Exercise	$0	-2,658	-17%	$0.000000	13,290	07 Dec 2025	Common stock	2,658	$0.000000	Direct	F1, F2

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

Explanation of Responses:

Id	Content
F1	Each restricted stock unit represents the right to receive, following vesting, one share of the issuer's common stock.
F2	This restricted stock unit award vested 25% on the Date Exercisable in Table II, with the remaining 75% vesting in equal quarterly amounts over the remaining 3 years.