Mercury, one of the earliest companies to become ensnared in the widening controversy over suspicious timing of stock option awards to top executives, disclosed the notices from the SEC enforcement staff to the three directors.

Separately, software maker Opsware Inc., said Wednesday that its chief financial officer, Sharlene Abrams — who formerly held that position at Mercury — also had received a so-called Wells notice from the SEC related to timing of stock options at her former company.