Gryphon Investors, a mid-market private equity firm is set to acquire a majority stake in Heartland Veterinary Partners, a veterinary support organization. Financial terms were not disclosed. "We're pleased to partner with Gryphon, which has a long track record of helping companies like ours successfully grow their businesses. With the support of Gryphon's deep operational and financial resources, we look forward to expanding our network of affiliated veterinarian hospitals and accelerating growth across our core geographies," George Robinson, Heartland CEO.