Bernstein Liebhard LLP Announces Investigation of Ameron International Corporation

July 5, 2011

Bernstein Liebhard LLP is investigating whether the Board of Directors of Ameron International Corporation (“Ameron” or the “Company”) (NYSE: AMN) breached its fiduciary duty to its shareholders in agreeing to sell Ameron to National Oilwell Varco, Inc.

Under the terms of the agreement, Ameron shareholders will receive $85.00 in cash for each share they own. The investigation is focused on the potential unfairness of the price to Ameron shareholders and the process by which the Ameron Board of Directors considered and approved the transaction.

If you are interested in discussing your rights as an Ameron shareholder and/or have information relating to the matter, please contact U. Seth Ottensoser at (877) 779-1414 or Ottensoser@bernlieb.com.

Bernstein Liebhard has pursued hundreds of securities, consumer and shareholder rights cases and recovered almost $3 billion for its clients. It has been named to The National Law Journal’s “Plaintiffs’ Hot List” in each of the last eight years.