Publishers Cry Foul As SSPs Claw Back Revenue Lost To MediaMath’s Bankruptcy, reports AdExchanger

MediaMath's bankruptcy fallout is hitting publishers as supply-side platforms (SSPs) Magnite, PubMatic, and Wunderkind seek to recoup revenue paid to publishers from deals made on MediaMath's demand-side platform (DSP). 

Sequential liability clauses in contracts usually protect SSPs from paying publishers if upstream partners default. The bankruptcy left several SSPs with significant unpaid amounts, with Magnite and PubMatic listed as the two largest creditors in the filing. However, some SSPs, including GumGum, 

Colossus, Index Exchange, and Google Ad Manager, stated they won't pursue clawbacks, citing potential harm to publishers. The fallout is leading publishers to rethink contractual relationships and seek ways to mitigate similar future incidents.