The heavy machinery maker said it had received a grand jury subpoena from a U.S. District Court on Jan. 8 and is cooperating with the investigation. Caterpillar also said in its latest filing that it had made a presentation to the SEC on Caterpillar SARL, on which the regulatory authority is conducting an investigation. The company is also in talks with the SEC about a possible resolution of another federal investigation, involving Caterpillar’s Progress Rail subsidiary.