SEC FORM 3

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^*

Grattan Laura A.

(Last)

(First)

(Middle)

C/O THOMAS H. LEE PARTNERS, L.P.

100 FEDERAL STREET, 35TH FLOOR

(Street)

BOSTON

02110

(City)

(State)

(Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
03/21/2013

3. Issuer Name and Ticker or Trading Symbol
WEST CORP [ WSTC ]

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director	10% Owner
	Officer (give title below)	Other (specify below)

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	36,262,765⁽¹⁾	I	See footnote⁽¹⁾⁽²⁾

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)
1. Title of Derivative Security (Instr. 4)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	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)

Explanation of Responses:

1. Represents shares of the Issuer held directly by Thomas H. Lee Advisors, LLC ("THL Advisors"), Thomas H. Lee Equity Fund VI, L.P. ("THL Equity VI"), Thomas H. Lee Parallel Fund VI, L.P. ("Parallel Fund VI"), Thomas H. Lee Parallel (DT) Fund VI, L.P. ("DT Fund VI"), THL Coinvestment Partners, L.P. ("THL Coinvestment"), THL Equity Fund VI Investors (West), L.P. ("THL West"), THL Equity Fund VI Investors (West) HL, L.P. ("THL West HL") together with THL Equity VI, Parallel Fund VI, DT Fund VI, THL Coinvestment, THL West and THL West HL, (the "THL Funds") as well as Putnam Investment Holdings, LLC ("Putnam") and Putnam Investments Employees' Securities Company III LLC ("Putnam III").

2. The Reporting Person is a Principal of Thomas H. Lee Partners, L.P., which is the managing member of THL Equity Advisors VI, LLC, which is the general partner of the THL Funds. In addition, due to contractual relationships with Thomas H. Lee Partners, L.P., Putnam and Putnam III are required to act pro rata with the THL Funds. By virtue of these relationships, the Reporting Person may be deemed to beneficially own the shares of the Issuer owned directly by each of the THL Funds, Putnam and Putnam III. The Reporting Person disclaims beneficial ownership of such shares, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities for the purpose of Section 16 or for any other purpose, except to the extent of his pecuniary interest therein.

Remarks:

	/s/ Laura A. Grattan	03/21/2013
	** 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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