PARK RIDGE, N.J. -- Hertz Global Holdings Inc. on Friday extended its tender offer for shares of rival rental car company Dollar Thrifty until Oct. 22.

Park Ridge, N.J.-based Hertz is in the process of acquiring Tulsa, Okla.-based Dollar Thrifty Automotive Group Inc. for $87.50 per share, or about $2.3 billion. The offer, which was previously set to expire on Friday, will now expire on Oct. 22, Hertz said.