Sky Harbour LLC, a developer of private aviation infrastructure focused on building, leasing, and managing business aviation hangars, in its business combination agreement with Yellowstone Acquisition Company (NASDAQ: YSAC, YSACU, and YSACW), a publicly traded SPAC sponsored by Boston Omaha Corporation (NASDAQ:BOMN). The combined company will have an implied pro forma equity market value of approximately $777 million at closing.