Avista Capital Partners, a private equity firm, and Hamilton Lane, a private markets investment management firm, completed the acquisition of a majority stake in Cosette Pharmaceuticals, a specialty pharmaceutical company. Financial terms were not disclosed. “We value Avista’s long-term relationship with Hamilton Lane and look forward to collaborating with them as a strategic partner to drive growth and value at Cosette. Our collective expertise will prove invaluable as Cosette evaluates larger M&A opportunities as part of the company’s growth strategy," David Burgstahler, Avista Managing Partner and CEO.