Mark Edgar ’00, a convertible bonds salesman for Nomura Securities International Inc., will run the Polar Circle Marathon, a 26.2-mile run across a polar ice sheet inside the Arctic Circle in Kangerlussuaq, Greenland, on Oct. 26. Edgar is part of a nine-member team trying to raise $200,000 for the Navy SEAL Foundation. The team comprises five Wall Street executives and four retired U.S. Navy SEALS.