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 *
HORNIG GEORGE
   2. Issuer Name and Ticker or Trading Symbol
FORRESTER RESEARCH, INC. [FORR] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director _____ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
(Last)
(First)
(Middle)
C/O FORRESTER RESEARCH, INC., 60 ACORN PARK DRIVE		 3. Date of Earliest Transaction (Month/Day/Year)
05/07/2018
(Street)

CAMBRIDGE, MA 02140		 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 05/07/2018   M(1)   2,661 A $ 0 8,861 D  
Common Stock 05/08/2017   S   8,100 D $ 42.61 (2) 761 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 $ 0 (3) 05/07/2018   M     843   (4)   (4) common stock 843 (5) 0 D  
Restricted Stock Units $ 0 (3) 05/07/2018   M     926   (6)   (6) common stock 926 (5) 0 D  
Restricted Stock Units $ 0 (3) 05/07/2018   M     892   (7)   (7) common stock 892 (5) 0 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
HORNIG GEORGE
C/O FORRESTER RESEARCH, INC.
60 ACORN PARK DRIVE
CAMBRIDGE, MA 02140		   X      

Signatures

 Maite Garcia, attorney-in-fact for George Hornig   05/08/2018
**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) Represents the conversion, upon vesting, of restricted stock units into common stock.
(2) This transaction was executed in multiple trades at prices ranging from $42.00 to $43.40. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.
(3) Each Restricted Stock Unit represents the right to receive, following vesting, one share of Forrester Research, Inc. common stock.
(4) On May 13, 2014, the reporting person was granted 3372 RSUs, vesting in four equal annual installments beginning on the first anniversary of the grant date. Effective May 7, 2018, the Compensation and Nominating Committee accelerated the vesting of 843 RSUs in connection with the reporting person's resignation from the Company's board of directors.
(5) Each Restricted Stock Unit is the equivalent of one share of Forrester Research, Inc. common stock.
(6) On May 12, 2015, the reporting person was granted 3703 RSUs, vesting in four equal annual installments beginning on the first anniversary of the grant date. Effective May 7, 2018, the Compensation and Nominating Committee accelerated the vesting of 926 RSUs in connection with the reporting person's resignation from the Company's board of directors.
(7) On May 17, 2016, the reporting person was granted 3569 RSUs, vesting in four equal annual installments beginning on the first anniversary of the grant date. Effective May 7, 2018, the Compensation and Nominating Committee accelerated the vesting of 892 RSUs in connection with the reporting person's resignation from the Company's board of directors

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