Mike Easterlin, head of promotion at Roadrunner Records, has ascended to GM, filling the void created by the departure of label president Jonas Nachsin, which was announced yesterday.

Earlier this month, Easterlin received another promotion when he was named GM of Fueled By Ramen. A source told Billboard.biz that Easterlin will oversee both Roadrunner and Fueled by Ramen but that they will have separate staffs.

In taking the reigns at Roadrunner, Easterlin, who will report to Atlantic Records Group co-chairman/CEO Craig Kallman and co-chairman/COO Julie Greenwald, will work with senior VP of A&R David Rath  and senior VP of marketing & creative services Madelyn Scarpulla in running the label.

Nine staffers were let go from Roadrunner yesterday, mostly in the finance, royalty and IT areas, in the hours after Nachsin’s departure was announced to the staff.

Easterlin came to Roadrunner in 2007 when the label merged its promotion staff with that of Lava/Atlantic, where he had worked as senior VP of promotion since 2005. Before that he worked as national director of pop promotion at Virgin Records and VP of pop promotion at Def Jam. [Billboard.biz]