JMP Group LLC announced management changes, including the resignation of Carter Mack from his position as president of the company. Additionally, Thomas Wright has been named chief operating officer of JMP Securities, while managing directors Jonathan Dever and Gavin Slader have been named co-heads of investment banking and have joined JMP Group’s executive committee. Carter Mack, formerly president of JMP Group and a member of the company’s executive committee, has stepped down from his position. He will remain a member of the company’s board of directors. Mack is a co-founder of JMP Group, forming the company with partners Joe Jolson and Jerry Tuttle in April 1999 and celebrating its initial public offering in May 2007.