INTERPUBLIC GROUP OF COMPANIES, INC.

Major Shareholding Notification • Feb 14, 2012

SC 13G/A 1 c68454_13ga.htm

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington,
D.C. 20549

SCHEDULE 13G

Under the Securities Exchange Act of 1934 (Amendment No. 1)*

Interpublic Group of Companies, Inc. (The)
(Name of Issuer)
Common Stock
(Title
of Class of Securities)
460690100
(CUSIP
Number)
December 30, 2011
(Date
of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

x	Rule 13d-1(b)
o	Rule 13d-1(c)
o	Rule 13d-1(d)

*The remainder of this cover page shall be filled out for a reporting person’s initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

CUSIP No. 460690100 — 1.	Names of Reporting Persons Lord, Abbett & Co. LLC
2.	Check the Appropriate Box if a Member of a Group (See Instructions)
	(a)	o
	(b)	o
3.	SEC Use Only
4.	Citizenship or Place of Organization Delaware
Number of Shares Beneficially Owned by Each Reporting Person With	5.	Sole Voting Power 26,774,712
	6.	Shared Voting Power 0
	7.	Sole Dispositive Power 28,232,600
	8.	Shared
Dispositive Power 0
9.	Aggregate Amount Beneficially Owned by Each Reporting Person 28,232,600
10.	Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See
Instructions) o N/A
11.	Percent of Class Represented by Amount in Row (9) 6.12%
12.	Type of Reporting Person (See Instructions) IA

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Item 1.	(a)	Name of Issuer Interpublic Group of Companies, Inc. (The)
	(b)	Address of Issuer’s Principal Executive Offices 1114 Avenue of the Americas New York, NY 10036
Item 2.
	(a)	Name of Person Filing Lord, Abbett & Co. LLC
	(b)	Address of Principal Business Office or, if none, Residence 90 Hudson Street Jersey City, NJ 07302.
	(c)	Citizenship See No. 4 on page 2.
	(d)	Title of Class of Securities See cover page.
	(e)	CUSIP Number See cover page.
Item 3.	If this statement is filed pursuant to §§240.13d-1(b) or 240.13d-2(b)
or (c), check whether the person filing is a:
	(a)	o	Broker or dealer registered under section 15 of the Act (15 U.S.C.
78o).
	(b)	o	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c).
	(c)	o	Insurance company as defined in section 3(a)(19) of the Act (15
U.S.C. 78c).
	(d)	o	Investment company registered under section 8 of the Investment
Company Act of 1940 (15 U.S.C. 80a-8).
	(e)	x	An investment adviser in accordance with §240.13d-1(b)(1)(ii)(E);
	(f)	o	An employee benefit plan or endowment fund in accordance with
§240.13d-1(b)(1)(ii)(F);
	(g)	o	A parent holding company or control person in accordance with
§240.13d-1(b)(1)(ii)(G);
	(h)	o	A savings association as defined in Section 3(b) of the Federal
Deposit Insurance Act (12 U.S.C. 1813);
	(i)	o	A church plan that is excluded from the definition of an investment
company under section 3(c)(14) of the Investment Company Act of 1940 (15
U.S.C. 80a-3);
	(j)	o	A non-U.S.
institution in accordance with § 240.13d–1(b)(1)(ii)(J);
	(k)	o	Group, in
accordance with § 240.13d–1(b)(1)(ii)(K). If filing as a non-U.S. institution
in accordance with §
240.13d–1(b)(1)(ii)(J), please specify the type of
institution:____

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Item 4.	Ownership
Provide the following information regarding the aggregate number and
percentage of the class of securities of the issuer identified in Item 1.
	(a)	Amount beneficially owned: See No. 9 on page 2.
	(b)	Percent of class: See No. 11 on page 2.
	(c)	Number of shares as to which the person has:
		(i)	Sole power to vote or to direct the vote See No. 5 on page 2.
		(ii)	Shared power to vote or to direct the vote See No. 6 on page 2.
		(iii)	Sole power to dispose or to direct the disposition of See No. 7 on page 2.
		(iv)	Shared power to dispose or to direct the disposition of See No. 8 on page 2.
Item 5.	Ownership of Five Percent or Less of a Class
If this
statement is being filed to report the fact that as of the date hereof the
reporting person has ceased to be the beneficial owner of more than five
percent of the class of securities, check the following q .
Not
applicable.
Item 6.	Ownership of More than Five Percent on Behalf of Another Person
Securities
reported on this Schedule 13G as being beneficially owned by Lord, Abbett
& Co. LLC are held on behalf on investment advisory clients, which may
include investment companies registered under the Investment Company Act,
employee benefit plans, pension funds or other institutional clients.
Not applicable.
Item 7.	Identification and Classification of the Subsidiary Which Acquired
the Security Being Reported on by the Parent Holding Company or Control
Person
Not
applicable.
Item 8.	Identification and Classification of Members of the Group
Not
applicable.
Item 9.	Notice of Dissolution of Group
Not
applicable.

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| Item 10. |
| --- |
| By signing
below I certify that, to the best of my knowledge and belief, the securities
referred to above were acquired and are held in the ordinary course of
business and were not acquired and are not held for the purpose of or with
the effect of changing or influencing the control of the issuer of the
securities and were not acquired and are not held in connection with or as a
participant in any transaction having that purpose or effect. |

Signature

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

February 14, 2012
Date
/s/ Lawrence H. Kaplan
Signature
Lawrence H. Kaplan/General
Counsel
Name/Title

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