By Jacqueline Bell

Law360, New York (August 07, 2008, 12:00 AM ET) -- Semiconductor manufacturer KLA-Tencor Corp. has revealed that the U.S. Attorney's Office for the Northern District of California has shuttered its investigation into the company's stock option granting practices without filing any charges.

The U.S. Attorney's office had issued a subpoena to the company in 2006, examining the chip-makers stock option grants. The far-reaching options backdating scandal, which first exploded in 2006, has touched dozens of companies, including KLA-Tencor.

In a U.S. Securities and Exchange Commission filing Thursday, KLA-Tencor said while the investigation by the U.S. Attorney...