SEC Form 5

FORM 5		UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 ANNUAL STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940	OMB APPROVAL OMB Number: 3235-0362 Estimated average burden hours per response: 1.0
	Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
	Form 3 Holdings Reported.
X	Form 4 Transactions Reported.

1. Name and Address of Reporting Person* WPP plc (Last) (First) (Middle) 27 FARM STREET (Street) LONDON X0 W1J 5RJ (City) (State) (Zip)	2. Issuer Name and Ticker or Trading Symbol COMSCORE, INC. [ SCOR ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director X 10% Owner Officer (give title below) Other (specify below)
	3. Statement for Issuer's Fiscal Year Ended (Month/Day/Year) 12/31/2016
	4. If Amendment, Date of Original Filed (Month/Day/Year)	6. Individual or Joint/Group Filing (Check Applicable Line) Form filed by One Reporting Person X Form filed by More than One Reporting Person

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 at end of Issuer's Fiscal Year (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
				Amount	(A) or (D)	Price
Common Stock	09/09/2016		P4	30,000	A	$30.23(1)	11,319,363(2)	I	See footnote(3)

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 Securities Underlying Derivative Security (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: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
					(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

1. Name and Address of Reporting Person* WPP plc (Last) (First) (Middle) 27 FARM STREET (Street) LONDON X0 W1J 5RJ (City) (State) (Zip)

1. Name and Address of Reporting Person* Cavendish Square Holding B.V. (Last) (First) (Middle) LAAN OP ZUID 167 (Street) 3072 DB ROTTERDAM P7 (City) (State) (Zip)

Explanation of Responses:

1. The price reported in column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $29.92 to $30.63, inclusive. The reporting persons undertake to provide to the SEC, comScore, Inc., or any securityholder of comScore, Inc., upon request, full information regarding the number of shares sold at each separate price within the ranges set forth above.

2. This number reflects the correction of a one share error in the Reporting Owners' prior Form 4.

3. These shares are owned directly by Cavendish, which is a wholly-owned subsidiary of WPP plc that WPP plc owns indirectly through a series of intervening holding companies. WPP plc is an indirect beneficial owner of the reported securities.

Remarks:

	WPP plc, By: /s/ Paul Richardson, Global Finance Director	04/06/2018
	Cavendish Square Holding B.V., By: /s/ A. van Heulen-Mulder, Managing Director	04/06/2018
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* 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).
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