Turnover among CEOs of U.S.-based companies soared in August, as 154 chief executive officers left their posts during the month. This is the month with the highest number of CEO changes on record, according to a report released Wednesday by global outplacement consultancy and executive coaching firm Challenger, Gray & Christmas, Inc.

August’s departures are 64 percent higher than the 94 CEOs who left their posts in July, and 60 percent higher than the 96 departing CEOs who left their posts in the same month last year. The next highest month for CEO departures occurred in September 2006 when 152 CEO changes were tracked.

So far this year, 879 CEO changes have been recorded, 15 percent more than the 765 CEO departures recorded last year.

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