PRINCETON JUNCTION, N.J., May 11, 2011 (GLOBE NEWSWIRE) -- Mistras Group, Inc. (NYSE:MG), a leading "one source" global provider of technology-enabled asset protection solutions, announced today that, in connection with its previously announced public offering, it has closed the public offering of 2,764,401 shares of common stock by TC NDT Holdings, L.L.C., an entity affiliated with Thayer | Hidden Creek Partners, and 989,660 shares of common stock by the Company, including 489,660 shares to cover the underwriters' full exercise of the overallotment option. After deducting underwriting discounts and commissions and estimated offering expenses, the Company received net proceeds of approximately $14.7 million.

J.P. Morgan and BofA Merrill Lynch acted as joint book-running managers for the offering. Baird, Stephens Inc., and KeyBanc Capital Markets acted as co-managers for the offering.

The shares of common stock are being offered pursuant to an effective shelf registration statement filed with the Securities and Exchange Commission ("SEC"). A prospectus supplement and the accompanying base prospectus related to the offering have been filed with the SEC and may be obtained by visiting EDGAR on the SEC's website, http://www.sec.gov. Alternatively, copies of the prospectus supplement and the accompanying base prospectus may be obtained by contacting: J.P. Morgan, c/o Broadridge Financial Solutions, 1155 Long Island Avenue, Edgewood, NY 11717, phone: (866) 803-9204 or BofA Merrill Lynch, 4 World Financial Center, New York, NY 10080, attention: Prospectus Department, email: dg.prospectus_requests@baml.com.

This press release is for informational purposes only and shall not constitute an offer to sell or the solicitation of an offer to buy any security of the Company nor shall there be any sale of any such security 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 other jurisdiction. 

About Mistras Group, Inc.

Mistras offers "one source" services and technology-enabled asset protection solution portfolios used to evaluate the structural integrity of energy, industrial and public infrastructure. Mission critical services and solutions are delivered globally and provide customers with the ability to extend the useful life of their assets, improve productivity and profitability, comply with government safety and environmental regulations and enhance risk management operational decisions.

Mistras combines its products and technologies - 24/7 on-line monitoring of critical assets; mechanical integrity and non-destructive testing services; and its proprietary data warehousing and analysis software - to provide comprehensive and competitive products, systems and services solutions from a single source provider.

The MISTRAS Group, Inc. logo is available at http://www.globenewswire.com/newsroom/prs/?pkgid=6966

CONTACT: Nestor S. Makarigakis

         Manager of Marketing and Communications

         1(609) 716-4000

         marcom@mistrasgroup.com