SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES 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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1. Name and Address of Reporting Person* Brien Nicolas (Last) (First) (Middle) C/O IPG 1114 AVE OF THE AMERICAS (Street) NEW YORK NY 10036 (City) (State) (Zip)	2. Date of Event Requiring Statement (Month/Day/Year) 04/01/2010	3. Issuer Name and Ticker or Trading Symbol INTERPUBLIC GROUP OF COMPANIES, INC. [ IPG ]
		4. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director 10% Owner X Officer (give title below) Other (specify below) Pres & CEO of McCann WG	5. 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 Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock	260,440(1)	D

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Stock Option (Right to Buy)	(2)	05/30/2018	Common Stock	63,736	9.9125	D
Stock Option (Right to Buy)	(3)	05/31/2017	Common Stock	51,094	11.7	D
Stock Option (Right to Buy)	(4)	06/15/2016	Common Stock	40,439	8.655	D
Stock Option (Right to Buy)	10/17/2009	10/17/2015	Common Stock	31,789	11.01	D

Explanation of Responses:

1. Includes restricted shares that are subject to forfeiture under certain circumstances.

2. The option vests as follows: (i) 33% of the total number of shares underlying the option vests on 5/30/2010; (ii) 33% of the total number of shares underlying the option vests on 5/30/2011; (iii) 34% of the total number of shares underlying the option vests on 5/30/2012.

3. The option vests as follows: (i) 33% of the total number of shares underlying the option vested on 5/31/2009; (ii) 33% of the total number of shares underlying the option vests on 5/31/2010; (iii) 34% of the total number of shares underlying the option vests on 5/31/2011.

4. The option vests as follows: (i) 33% of the total number of shares underlying the option vested on 6/15/2008; (ii) 33% of the total number of shares underlying the option vested on 6/15/2009; (iii) 34% of the total number of shares underlying the option vests on 6/15/2010.

	Nicolas Brien	04/14/2010
	** 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 5 (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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