SEC Form 4

FORM 4		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 or Section 30(h) of the Investment Company Act of 1940	OMB APPROVAL OMB Number: 3235-0287 Estimated average burden hours per response: 0.5
	Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person* DICKSON ROBERT E (Last) (First) (Middle) C/O MDC PARTNERS INC. 45 HAZELTON AVENUE (Street) TORONTO ONTARIO A6 M5R 2E3 (City) (State) (Zip)	2. Issuer Name and Ticker or Trading Symbol MDC PARTNERS INC [ MDCA ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director 10% Owner X Officer (give title below) Other (specify below) Managing Director
	3. Date of Earliest Transaction (Month/Day/Year) 03/30/2011
	4. If Amendment, Date of 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

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
Class A Shares	03/30/2011		M		57,150	A	$8.4(4)	241,242(1)	D
Class A Shares	03/30/2011		S		57,150	D	$16.42(5)	184,092(1)(2)	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 (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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Stock Options (Right to Buy)(3)	$8.4(4)	03/30/2011		M			57,150	04/10/2002	04/10/2012	Class A Shares	57,150	$0	0	D
Stock Appreciation Rights(6)	$8.95							04/28/2008	04/28/2016	Class A Shares	10,000		10,000	D
Stock Appreciation Rights(7)	$3.72							02/12/2010	02/12/2014	Class A Shares	188,276		188,276	D
Extraordinary Equity Value Appre. Restricted Stock Awards(8)	(8)							(8)	12/31/2013	Restricted Stock Units	45,000		45,000	D

Explanation of Responses:

1. Includes unvested Restricted Stock Units (Class A Shares) of the Issuer.

2. In connection with the referenced sale, the Reporting Person has reconfirmed his commitment to continue to comply with the Company's Stock Ownership Guidelines. The sale by the Reporting Person represents less than 15% of such individual's holdings, and was made for portfolio diversification purposes.

3. Stock Options (previously granted on April 10, 2002) expire 10 years from the grant date.

4. Canadian dollars.

5. The share price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $16.30 to $16.51, inclusive. The reporting person undertakes to provide to MDC Partners Inc., any security holder of MDC Partners Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (5) to this Form 4.

6. Stock Appreciation Rights ("SARs") granted April 28, 2006, fully vested on April 28, 2008. These SARs may be settled in cash or stock, at the discretion of the Issuer.

7. SARs granted February 12, 2009, vested 33% on the first anniversary of the grant date, 33% vest on the second anniversary of the grant date, and 34% vest on the third anniversary of the grant date, and all expire on February 12, 2014. These SARs may be settled in cash or stock, at the discretion of the Issuer.

8. Extraordinary Equity Value Appreciation Restricted Stock Awards ("EVARs") under the Issuer's EVARs program (previously disclosed by the Issuer on Form 8-K dated January 26, 2011) represent the right to receive Restricted Stock Units on a one-to-one basis upon the Issuer's achievement of stock price targets equal to $20.00 (15,000 EVARs), $22.75 (15,000 EVARs) and $26.25 (15,000 EVARs), as described in greater detail in the EVAR Letter Agreement.

	/s/ Robert E. Dickson	03/31/2011
	** 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).
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