Panamsat Holdings Corp. again extended the expiration date for the exchange offer relating to all of its outstanding 10-3/8 percent senior discount notes. Panamsat is looking to exchange $416 million in aggregate principal amount at maturity of the notes, issued Oct. 19 and due in 2014, for a like principal amount of new notes. The original offer, commenced April 18, was set to expire May 24. The offer is now set to expire, barring a future extension, at 5 p.m. EDT May 31.