Thompson Street Capital Partners Sells 2.5 Million Shares of Thermon Group Holdings, Inc. As Part of Secondary Offering

ST. LOUIS (September 26, 2012) — Thompson Street Capital Partners (TSCP) announced that Thermon Group Holdings, Inc. (NYSE: THR), completed an underwritten public offering of 11.5 million shares of common stock offered by certain existing stockholders. The offering was upsized from the previously announced offering size of eight million shares. TSCP sold approximately 2.5 million shares in this secondary offering at $22 per share, yielding net proceeds in excess of $50 million. TSCP retains approximately three percent ownership stake in the company.

Headquartered in San Marcos, Texas, 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. The Thermon website is www.thermon.com.

In April, 2010, Thompson Street partnered with CHS Capital, Crown Investment Series LLC and Thermon’s senior management to acquire Thermon Group Holdings, Inc. A little more than a year later, in May, 2011, TSCP and its partners completed an initial public offering of Thermon in which TSCP sold approximately 1.5 million shares at a price of $12 per share. The company has grown strongly since then, creating significant value for its shareholders.

According to Jim Cooper, TSCP Senior Managing Partner, “2012 has been a productive year for Thermon and Thompson Street. Our relationship with management and our partners has been excellent and together we have realized outstanding growth by supporting a variety of successful initiatives.”

Thermon (www.thermon.com), located in San Marcos, Texas, is a leading manufacturer of electric and steam heat tracing equipment serving diverse end markets around the world including energy, chemical processing and power generation.

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