WASHINGTON, May 26 -- Law firms assisted companies in the following recently announced transactions: * * * Gibson Dunn is advising Publicis Groupe on its acquisition of Captiv8, an end-to-end influencer marketing platform. The corporate team for this transaction is led by partner Quinton Farrar, with key support from associates Sanzana Faroque and Kira Dennis, demonstrating expertise in significant corporate acquisitions. Goodwin guided Orionis Biosciences in a substantial strategic partnersh more ST