SEC FORM 4

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

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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^*

Swartzman Gavin

(Last)

(First)

(Middle)

C/O MDC PARTNERS INC.

45 HAZELTON AVENUE

(Street)

TORONTO

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)
08/28/2007

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Class A Subordinate Voting Shares⁽¹⁾								54,755⁽²⁾⁽³⁾	D
Class A Shares	08/28/2007		M		21,000	A	$8.02⁽⁴⁾	75,755⁽²⁾⁽³⁾	D
Class A Shares	08/28/2007		D		2,798	D	$10.44	72,957⁽²⁾⁽³⁾	D
Class A Shares	08/29/2007		D		200	D	$10.39	72,757⁽²⁾⁽³⁾	D
Class A Shares	08/30/2007		D		5,002	D	$10.39	68,755⁽²⁾⁽³⁾	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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
Stock Options⁽⁵⁾	$8.02⁽⁴⁾	08/28/2007		M			21,000	11/14/2002	11/14/2007	Class A Shares	21,000	⁽⁶⁾	0	D
Stock Appreciation Rights⁽⁷⁾	$13.61⁽⁴⁾							08/24/2005	08/24/2008	Class A Shares	30,000		30,000	D

Explanation of Responses:

1. Hereinafter, "Class A Shares".

2. Includes 17,500 Financial Performance-Based Restricted Stock Units (Class A Shares) (hereinafter, "FPB RSU's") of the Issuer awarded on February 28, 2006. These FPB RSU's may vest in 2008 and / or 2009 if the Issuer achieves specified financial performance targets in 2007 - 2008, and is dependent on continued employment. Such financial targets are set forth in a "Financial Performance-Based Restricted Stock Unit Agreement", a form of which was filed by the Issuer as an exhibit to a Form 8-K filed with the SEC on March 2, 2006.

3. Includes 30,357 FPB RSU's of the Issuer awarded March 20, 2007 which may vest in each of 2008, 2009 or 2010 if the Issuer achieves specified financial performance targets in 2007, 2008 and 2009, and is dependent on continued employment.

4. Canadian dollars.

5. Stock Options (previously granted on November 14, 2002) vest 1/5 on grant and 1/5 on each anniversary of the grant date, expiring five years from the grant date.

6. This transaction does not involve the sale or purchase of a derivative security, but rather the exercise of Stock Options. As per instruction 4 of Form 4, this field has been left blank.

7. Stock Appreciation Rights (previously granted on August 24, 2004) vest 1/3 on each anniversary of the grant date, expire four years from the grant date, and may be settled in cash or in stock at the discretion of the Issuer.

	/s/ Gavin Swartzman	09/04/2007
	** 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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