News that Marvell Semiconductor Inc. fired its general counsel, Matthew Gloss, came Monday as part of a press release packed with several demotions and departures because of stock-option backdating at the company.

But it remains unclear whether Gloss was terminated directly because of his involvement in backdating — or because of something else. The Santa Clara, Calif.-based semiconductor company noted that Gloss and others “bear varying degrees of responsibility” for “the systemic failure of internal controls” over stock option grants at the company. An attorney for Gloss said his client’s firing was not related to backdating, but declined to say more.