Citrix Systems ( CTXS) will miss its filing deadline for its Form 10-K because of its ongoing stock options investigation. "Although the audit committee has reached no conclusions concerning the review, the investigation has thus far identified errors in connection with stock option grants issued by Citrix during the period from 1996 through 1998," the company said Friday. The Internet infrastructure company said the committee did not find any evidence of "intentional wrongdoing" by any current executives of Citrix. Citrix said the committee is continuing its investigation. The company filed a notice with the Securities and Exchange Commission that extends its 10-K due date to March 16. Citrix shares recently added 27 cents to $31.71.