Ridgebury Tankers, which was formed to acquire a spot market focused initial fleet of three to four Suezmax tankers, filed on Friday with the SEC to raise up to $250 million in an initial public offering. The Ridgefield, CT-based company plans to list on the NASDAQ under the symbol RDGE. Jefferies & Co. is the lead underwriter on the deal, for which pricing terms and timing were not disclosed.