Mike Mills, the editorial director and senior vice president of CQ Roll Call, is leaving the company for a new position in the nonprofit sector, according to a just-released announcement. Mills will serve as the chief content officer at the D.C.-based Society for Science and the Public.

Keith White, CQ Roll Call’s executive vice president and managing director, wrote the following in a memo about the move:

I am deeply appreciative of Mike’s personal commitment to the success of CQ Roll Call. In fact, Mike began mapping out the next stage of his career several months ago, but he was determined to assist the senior leadership team in completing this most recent restructuring before he would accept a role outside of the company. Mike has made enormous contributions during his three stints at CQ Roll Call, including his part the launch of our verticals, our Executive Briefs, the integration of CQ and Roll Call and the upcoming redesign of our daily product. His profound understanding of the journalism and data in this market, along with his genius in coming up with solutions to design and edit problems will be missed, and I am personally very grateful for all of his efforts over our many years working together. I have no doubt he will make an enormous impact in his exciting new role, and we look forward to seeing his continued success.

The memo makes official continued tumult at the company.

Two weeks ago, the company scrapped plans for Roll Call’s daily print publications for the Republican and Democratic conventions — special publications that the outfit had been circulating since the 2004 conventions. The cancellation forced the company to scale back convention travel for reporters and editors: Fewer than 20 staffers will be making the trip, as opposed to a planned contingent of around 40.

And this week, as reported in FishbowlDC, CQ Roll Call laid off about 30 employees, most of them from the business side of the operation. CQ and Roll Call merged in 2009 and are owned by the Economist Group. Following the merger, the company cut more than 40 editorial positions.