This excerpt taken from the KLAC 10-K filed Aug 20, 2007.
Restatements of Prior Period Consolidated Financial Statements in Previous Filings
In our Annual Report on Form 10-K for the fiscal year ended June 30, 2006 (filed on January 29, 2007) and our quarterly reports on Form 10-Q for the quarters ended September 30, 2006, December 31, 2006 and March 31, 2007 (filed on January 29, 2007, February 9, 2007 and May 7, 2007, respectively), we restated (1) our consolidated financial statements as of and for the fiscal years ended June 30, 2005 and 2004; (2) our selected consolidated financial data as of and for our fiscal years ended June 30, 2005, 2004, 2003 and 2002; and (3) our unaudited quarterly financial data for the first three quarters in our fiscal year ended June 30, 2006 and for all quarters in our fiscal year ended June 30, 2005. In those filings, to correct our past accounting for stock options, we recorded total additional pre-tax, non-cash, stock-based compensation expense of $375.7 million for periods from July 1, 1994 to June 30, 2007. All financial information included in this Annual Report on Form 10-K reflects that restatement and does not contain any further restatement.