 OMAHA, Neb.--BUSINESS WIRE--Yellowstone Acquisition Company the Company NASDAQ:YSACU, a special purpose acquisition company, announced the closing of the sale today of an additional 1,098,898 units pursuant to the partial exercise of the underwriters over-allotment option in connection with the Companys initial public offering. The additional units were sold at the initial public offering price of 10.00 per unit. The total number of units sold by the Company in the initial public off 