Statement of Changes in Beneficial Ownership (Form 4)

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b). Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person * Akgonul Rifat Kerim 2. Issuer Name and Ticker or Trading Symbol PEGASYSTEMS INC [PEGA] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) Chief Product Officer (Last) (First) (Middle) C/O PEGASYSTEMS INC., 225 WYMAN STREET, STE 300 3. Date of Earliest Transaction (Month/Day/Year) 03/03/2026 (Street) WALTHAM, MA 02451 4. If Amendment, Date Original Filed (Month/Day/Year) 6. Individual or Joint/Group Filing (Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common stock 03/04/2026 M 5,320(1) A $ 0 105,282 D Common stock 03/04/2026 F 1,562 D $45.01 103,720 D Common stock 03/04/2026 M 6,462(1) A $ 0 110,182 D Common stock 03/04/2026 F 1,917 D $45.01 108,265 D

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code (Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date (Month/Day/Year)

7. Title and Amount of Underlying Securities (Instr. 3 and 4)

8. Price of Derivative Security (Instr. 5)

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Restricted Stock Units(1)

$ 0

03/03/2026

A

22,342

03/03/2027(2)

03/03/2030

Common stock

22,342

$ 0

22,342

D

Stock Option

$45.01

03/03/2026

A

56,948

03/03/2027(3)

03/03/2036

Common stock

56,948

$ 0

56,948

D

Restricted Stock Units(1)

$ 0

03/03/2026

A

4,901

03/03/2027(4)

03/03/2027

Common stock

4,901

$ 0

4,901

D

Restricted Stock Units(1)

$ 0

03/04/2026

M

5,320

03/04/2026(5)

03/04/2026

Common stock

5,320

$ 0

0

D

Restricted Stock Units(1)

$ 0

03/04/2026

M

6,462

03/04/2026(2)

03/04/2029

Common stock

6,462

$ 0

19,386

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Akgonul Rifat Kerim C/O PEGASYSTEMS INC. 225 WYMAN STREET, STE 300 WALTHAM, MA 02451			Chief Product Officer

Signatures

/s/ Ewelina Kemp, Attorney-in-Fact for Rifat Kerim Akgonul		03/05/2026
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	Each restricted stock unit represents the right to receive, following vesting, one share of common stock.
(2)	25% of the restricted stock units vest on the Date Exercisable in Table II, and the remaining 75% vest in equal quarterly installments over the following three years.
(3)	This stock option vests as to 25% of the shares subject thereto on the Date Exercisable in Table II, with the remaining 75% vesting in equal quarterly amounts over the following three years.
(4)	This award represents the election by the individual, as part of the Company's Corporate Incentive Compensation Plan (CICP), to receive half of their annual bonus in restricted share units. This restricted stock unit award vests 100% on the Date Exercisable in Table II, subject to attainment of the CICP performance threshold funding for the year ending December 31, 2026.
(5)	This restricted stock unit award vested 100% based on the achievement of performance conditions related to the Company's financial results for the year ended December 31, 2025.

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