Thermon Prices Upsized Secondary Offering of Common Stock

SAN MARCOS, TX -- (Marketwire) -- 09/20/12 -- Thermon Group Holdings, Inc. (NYSE: THR) (the "Company") announced today the pricing of an underwritten public offering of 10,000,000 shares of common stock offered by certain of its existing stockholders at a price to the public of $22.00 per share. The offering was upsized from the previously announced offering size of 8,000,000 shares. In addition, the underwriters have a 30-day option to purchase up to 1,500,000 additional shares from the selling stockholders to cover over-allotments, if any. The offering is expected to close on September 26, 2012, subject to customary closing conditions.

All of the shares of common stock in the offering are being sold by investment funds affiliated with CHS Capital™ LLC, Thompson Street Capital Partners and Longview Asset Management LLC. Neither the Company nor the Company's management is selling any shares of common stock in the offering, and the Company will not receive any of the proceeds from the offering of shares by the selling stockholders.

Barclays Capital Inc. and Jefferies & Company, Inc. acted as joint book-running managers, and William Blair & Company, L.L.C., BMO Capital Markets Corp. and KeyBanc Capital Markets Inc. acted as co-managers.

A shelf registration statement (including a prospectus) relating to these securities was filed by the Company and declared effective on June 21, 2012 by the Securities and Exchange Commission (the "SEC"). Information about the offering is available in the prospectus supplement to be filed with the SEC. Copies of the prospectus supplement and the accompanying prospectus relating to the offering may be obtained by contacting:

Barclays
Attention: Broadridge Financial Solutions
1155 Long Island Avenue
Edgewood, NY 11717
(888) 603-5847
Barclaysprospectus@broadridge.com

Jefferies
Attention: Equity Syndicate Prospectus Department
520 Madison Avenue
12th Floor
New York, NY 10022
(877) 547-6340
Prospectus_Department@Jefferies.com

The offering of these securities is being made solely by means of a prospectus supplement and the accompanying prospectus. This press release shall not constitute an offer to sell or the solicitation of any offer to buy, nor shall there be any sale of these securities in any state or jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such state or jurisdiction.

About Thermon
Through its global network, Thermon provides highly engineered thermal solutions, known as heat tracing, for process industries, including energy, chemical processing and power generation. Thermon's products provide an external heat source to pipes, vessels and instruments for the purposes of freeze protection, temperature maintenance, environmental monitoring and surface snow and ice melting. Thermon is headquartered in San Marcos, Texas.

CONTACT:
Sarah Alexander
(512) 396-5801
Investor.Relations@thermon.com

Source: Thermon Group Holdings, Inc.

Released September 20, 2012