Peter Weinberg· Finance · 7 sources · 3dStoryPiper Sandler, Perella Weinberg End Merger TalksPiper Sandler and Perella Weinberg ended all-stock merger talks over terms and banker lock-ups; Perella shares fell as much as 21% after the Oct. 14 FT report.Finance· 3d+4+23ShareMarcus Bell·2dTop commentBanker retention issues like this often sink these mergers before they even get started.ReplyGenius replyShareWrite a comment…