Prium Companies, a Tacoma-based real estate firm whose statewide commercial real estate holdings include Spokane's Wells Fargo tower and Rock Pointe office complex, is casting about for joint equity partners, company officials confirmed Wednesday. Tom Price, Prium's co-owner, said the company is seeking investors interested in participating in joint ventures involving its nearly 3 million square feet of office and retail space throughout Washington. But the company's extensive residential properties would not be part of any deals, he said.