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 * Kirby Michael JL   2. Issuer Name and Ticker or Trading Symbol MDC PARTNERS INC [MDCA] 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 MDC PARTNERS INC., 45 HAZELTON AVENUE 3. Date of Earliest Transaction (Month/Day/Year) 03/07/2011 (Street) TORONTO ONTARIO, A6 M5R 2E3 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 Class A Shares               29,066 (1) D   Class A Shares               381 (2) I See FN (2) Restricted Stock Units (Class A Shares) 03/07/2011   A   4,132 A $ 0 33,198 (1) (3) 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

Stock Options (4)

$ 15.26 (5)

06/08/2004

06/08/2009

Class A Shares

25,000

25,000

D

SARs (6)

$ 3.72

03/10/2010

03/09/2014

Class A Shares

10,000

10,000

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Kirby Michael JL C/O MDC PARTNERS INC. 45 HAZELTON AVENUE TORONTO ONTARIO, A6 M5R 2E3	X

Signatures

/s/ Michael J. L. Kirby		03/09/2011
**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)	Includes unvested Restricted Stock Units (Class A Shares) of the Issuer.
(2)	Held by an Affiliate of the Reporting Person.
(3)	These 4,132 Restricted Stock Units (Class A Shares) of the Issuer, granted on March 7, 2011, will vest on the third anniversary of the grant date, contingent upon certain events and the Reporting Person's continued service as a director through the vesting date.
(4)	Stock Options (previously granted on June 8, 2004) vest 1/5 on the grant date and 1/5 on each anniversary of the grant date, expiring five years from the grant date.
(5)	Canadian dollars.
(6)	The Stock Appreciation Rights ("SARs") granted on March 10, 2009, vest over three (3) years from the Grant Date: 33% (3,300 Class A Shares) on the first anniversary of the Grant Date, 33% (3,300 Class A shares) on the second anniversary of the Grant date, and 34% (3,400 Class A Shares) on the third anniversary of the Grant Date, and expire five (5) years from the Grant Date.

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