Ameron International Corp., Pasadena, CA, said its board of directors announced a two-for-one stock split in the form of a stock dividend of one additional common share for every outstanding common share held by stockholders of record on May 1, 2003, payable May 27, 2003. Chairman, President and CEO James S. Marlen said the stock split will increase the number of Ameron shares in the market, “and we hope that additional shares will lead to wider ownership and improved liquidity for all stockholders.”