Two of Dan Gilbert's top executives departed his Rock Ventures LLC this week in a management shakeup.

Chief Operating Officer Josh McManus and Chief Administrative Officer Deb Dansby left Rock Ventures effective this week, the company confirmed Friday, saying that it has hired three new executives "as the growth of its affiliated companies continues to expand, pushing the company that supports common functions as well as coordinates and leads community investment and involvement, to strengthen and grow its leadership echelon."

The news comes one year and one day after Rock ,announced McManus' and Dansby's elevations to the COO and CAO roles, respectively.

Rock said it has hired Robby Hogle as vice president of business development; Karissa Holmes as community director of special projects and special counsel; and Jesenka Mrdjenovic as CAO and legal counsel to replace Dansby.

McManus' COO duties will be absorbed by the new hires, Rock said.

Whitney Eichinger, vice president of communications for Rock Ventures, would not say whether McManus and Dansby resigned or were fired.

"With the addition of these three highly-recruited, forward-thinking and motivated individuals, we have dramatically increased our ability to grow the entire organization while also hiring some of the brightest young minds to protect the work we do each and every day," Gilbert, founder and chairman of Quicken Loans Inc. and Rock Ventures said in a statement. "Robby, Karissa and Jesenka come to us with fresh eyes, intellectual prowess, tons of experience, awareness, curiosity, urgency and the motivation to help make us better at everything we do."

Prior to being named COO in July 2016, McManus had been with the company for about a year and a half. Dansby, vice president prior to becoming CAO, joined Rock Ventures in 2012.

Their new positions were part of a series of changes at the time that the company told Crain's was to strengthen ties among Gilbert's growing portfolio of businesses.

Also at the time, Matt Cullen, who was president and CEO of Rock Ventures, became principal of the company and began to focus more of his time on Gilbert's gaming interests as CEO of JACK Entertainment LLC.

Howard Luckoff, a former partner at Detroit-based Honigman Miller Schwartz and Cohn LLP, also became general counsel for Rock Ventures at the time.