X0303 4 2010-09-11 0001094739 FINISAR CORP FNSR 0001486769 Adzema Kurt 1389 MOFFETT PARK DRIVE SUNNYVALE CA 94089-1134 1 Chief Financial Officer Common Stock 2010-09-11 2010-09-11 4 F 0 81.0000 15.3000 D 53611.0000 D On Sep 11, 2010, the Reporting Person vested in 219 restricted stock units ("RSUs") and as a result acquired 219 shares of common stock of the Issuer pursuant to the Reporting Person's September 11, 2008 grant of RSUs. This Form 4 reports the disposition of shares withheld by the Issuer pursuant to the RSUs' grant agreement in order to satisfy the Reporting Person's withholding obligations for various taxes due upon the vesting of the RSUs. The Issuer will pay the taxes on behalf of the Reporting Person. Girija Karumanchi as Attorney-in-fact for 2010-09-14