ST. PETERSBURG, Fla.--(BUSINESS WIRE)---- $NP--Neptune Insurance Holdings Inc. (the “Company”) (NYSE: NP), the parent company of Neptune Flood Incorporated, today announced that, in connection with the secondary offering of 9,841,395 shares of its Class A common stock by certain selling securityholders, the underwriters have fully exercised their option to purchase an additional 1,476,209 shares of Class A common stock from the selling securityholders. The Company will not receive any proceeds from the.