Ownership Submission
FORM 4
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 OF SECURITIES

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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(Print or Type Responses)
1. Name and Address of Reporting Person *
PYLE MICHAEL R
   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)
Senior VP, Engineering
(Last)
(First)
(Middle)
C/O PEGASYSTEMS INC., 1 ROGERS STREET		 3. Date of Earliest Transaction (Month/Day/Year)
03/05/2018
(Street)

CAMBRIDGE, MA 02142		 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 03/05/2018   S   600 (1) D $ 57.44 (2) 27,905 D  
Common Stock 03/05/2018   S   3,129 (1) D $ 58.94 (3) 24,776 D  
Common Stock 03/05/2018   S   271 (1) D $ 59.43 (4) 24,505 D  
Common Stock 03/06/2018   S   6,000 (1) D $ 60 18,505 (5) 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 (6) $ 0 03/05/2018   A   5,100 (7)   03/05/2019   (8) Common Stock 5,100 $ 0 5,100 D  
Restricted Stock Units (6) $ 0 03/05/2018   A   2,221 (9)   03/05/2019   (8) Common Stock 2,221 $ 0 2,221 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
PYLE MICHAEL R
C/O PEGASYSTEMS INC.
1 ROGERS STREET
CAMBRIDGE, MA 02142		       Senior VP, Engineering  

Signatures

 /s/ Janet Mesrobian, Esq., Attorney-In-Fact for Michael Pyle   03/07/2018
**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) Sold pursuant to a pre-arranged stock trading plan under rule 10b5-1 of the Securities Exchange Act of 1934, as amended.
(2) Represents the weighted average of the sale prices, ranging from $57.15 to $57.65. The individual has provided the Company, and undertakes to provide to the staff of the Securities and Exchange Commission or any security holder of the Company, upon request, full information regarding the number of shares sold at each separate price.
(3) Represents the weighted average of the sale prices, ranging from $58.40 to $59.35. The individual has provided the Company, and undertakes to provide to the staff of the Securities and Exchange Commission or any security holder of the Company, upon request, full information regarding the number of shares sold at each separate price.
(4) Represents the weighted average of the sale prices, ranging from $59.40 to $59.45. The individual has provided the Company, and undertakes to provide to the staff of the Securities and Exchange Commission or any security holder of the Company, upon request, full information regarding the number of shares sold at each separate price.
(5) Does not include shares of common stock subject to unvested restricted stock units and options awards.
(6) Each restricted stock unit represents the right to receive, following vesting, one share of the Company's common stock.
(7) RSUs vest 50% on March 5, 2019, and the remaining 50% will vest on March 5, 2020.
(8) Once vested, the shares of common stock are not subject to expiration.
(9) 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 5, 2018. All RSUs vest 100% on March 5, 2019, subject to attainment of the CICP performance threshold funding for the year ending December 31, 2018.

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