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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(Print or Type Responses)
1. Name and Address of Reporting Person *
  SIMMONS BRIAN P
 2. Date of Event Requiring Statement (Month/Day/Year)
05/04/2011		 3. Issuer Name and Ticker or Trading Symbol
Thermon Group Holdings, Inc. [THR]
(Last)
(First)
(Middle)
10 SOUTH WACKER DRIVE		 4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director __X__ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
5. If Amendment, Date Original Filed(Month/Day/Year)
(Street)

CHICAGO, IL 60606		 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 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 13,857,025
I
By CHS Private Equity V LP, an affiliate of CHS Capital (1)
Common Stock 6,929
I
By CHS Associates V, an affiliate of CHS Capital LLC (2)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. SEC 1473 (7-02)
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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 of Derivative Security: 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

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
SIMMONS BRIAN P
10 SOUTH WACKER DRIVE
CHICAGO, IL 60606		   X   X    

Signatures

/s/ Brian P. Simmons by Sarah Alexander as attorney-in-fact pursuant to attached Power of Attorney 05/04/2011
**Signature of Reporting Person Date

Explanation of Responses:

* 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).
(1) Mr. Simmons is a member of the Investment Committee of CHS Capital LLC, which is the general partner of CHS Management V, LP, which is the general partner of CHS Private Equity V LP. Mr. Simmons disclaims beneficial ownership of the securities except to the extent of a pecuniary interest therein.
(2) Mr. Simmons is a member of the Investment Committee of CHS Capital, LLC, which is the managing partner of CHS Associates V. Mr. Simmons disclaims beneficial ownership of the securities except to the extent of a pecuniary interest therein.

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