Dec 29 (Reuters) - Activist investor William Ackman's Pershing Square (NYSE:SQ) PHS.AS said on Friday it had reached an agreement with Valeant Pharmaceuticals (NYSE:VRX) VRX.TO to split settlement costs of a lawsuit related to Allergan (NYSE:AGN) Plc AGN.N .
Pershing Square said Valeant will now pay around 33 percent, or $96.25 million, of the settlement costs. Valeant had previously agreed to pay 60 percent of the costs.