Sec Form 3 Filing - Akgonul Rifat Kerim @ PEGASYSTEMS INC - 2021-04-01

FORM 3 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 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., ONE ROGERS STREET 3. Date of Earliest Transaction (MM/DD/YY) 04/01/2021 (Street) CAMBRIDGE, MA02142 4. If Amendment, Date Original Filed (MM/DD/YY) 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 (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 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 46,909 D

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 (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 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 (MM/DD/YY) 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 03/02/2018( 2 ) ( 3 ) Common stock 1,478 D Restricted Stock Units ( 1 ) $ 0 03/05/2019( 4 ) ( 3 ) Common stock 2,728 D Restricted Stock Units ( 1 ) $ 0 03/06/2020( 5 ) ( 3 ) Common stock 3,981 D Restricted Stock Units ( 1 ) $ 0 03/03/2021( 6 ) ( 3 ) Common stock 5,350 D Restricted Stock Units ( 1 ) $ 0 03/02/2022( 7 ) ( 3 ) Common stock 1,125 D Restricted Stock Units ( 1 ) $ 0 03/02/2022( 8 ) ( 3 ) Common stock 4,611 D Stock Options $ 25.2 03/09/2017( 9 ) 03/09/2026 Common stock 6,177 D Stock Options $ 44.3 03/02/2018( 10 ) 03/02/2027 Common stock 15,534 D Stock Options $ 58.95 03/05/2019( 11 ) 03/05/2028 Common stock 21,954 D Stock Options $ 64.35 03/06/2020( 12 ) 03/06/2029 Common stock 22,595 D Stock Options $ 90.05 03/03/2021( 13 ) 03/03/2030 Common stock 26,502 D Stock Options $ 130.45 03/02/2022( 14 ) 03/02/2031 Common stock 15,772 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Akgonul Rifat Kerim C/O PEGASYSTEMS INC. ONE ROGERS STREET CAMBRIDGE, MA02142 Chief Product Officer Signatures /s/ Donald L. Lancaster, Attorney-in-Fact for Rifat Kerim Akgonul 04/07/2021 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Each restricted stock unit represents the right to receive, following vesting, one share of the issuer's common stock. ( 2 )The original grant was 7,387 restricted stock units, with 20% vesting on March 2, 2018, and the remaining 80% vesting in equal quarterly installments over the remaining four years. ( 3 )Once vested, the shares of common stock are not subject to expiration. ( 4 )The original grant was 6,819 restricted stock units, with 20% vesting on March 5, 2019, and the remaining 80% vesting in equal quarterly installments over the remaining four years. ( 5 )The original grant was 6,635 restricted stock units, with 20% vesting on March 6, 2020, and the remaining 80% vesting in equal quarterly installments over the remaining four years. ( 6 )The original grant was 6,687 restricted stock units, with 20% vesting on March 3, 2021, and the remaining 80% vesting in equal quarterly installments over the remaining four years. ( 7 )Represents election by the individual, as part of the Company's Corporate Incentive Plan (CICP), to receive half of their annual bonus in RSUs, based upon the Company's stock price as of March 2, 2021. All RSUs vest 100% on March 2, 2022, subject to attainment of the CICP performance threshold funding for the year ending December 31, 2021. ( 8 )RSUs will vest 20% on March 2, 2022, with the remaining 80% vesting in equal quarterly installments over the remaining four years. ( 9 )The original grant was 30,883 options, with 20% vesting on March 9, 2017, with the remaining 80% vesting in equal quarterly amounts over the next four years. ( 10 )The original grant was 24,382 options, with 20% vesting on March 2, 2018, with the remaining 80% vesting in equal quarterly amounts over the next four years. ( 11 )Options vested 20% on March 5, 2019, with the remaining 80% vesting in equal quarterly amounts over the next four years. ( 12 )Options vested 20% on March 6, 2020, with the remaining 80% vesting in equal quarterly amounts over the next four years. ( 13 )Options vested 20% on March 3, 2021, with the remaining 80% vesting in equal quarterly amounts over the next four years. ( 14 )Options will vest 20% on March 2, 2022, with the remaining 80% vesting in equal quarterly installments over the remaining four years.

Remarks: Rifat Kerim Akgonul became Pegasystems Inc.'s Chief Product Officer effective April 1, 2021. EXHIBIT LIST: EX-24 RKAkgonul Ex. 24

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