Founder of Pine Island Capital Partners LLC, John Alexander Thain is an American businessperson who has been at the head of 13 different companies and occupies the position of Chairman of Pine Island Acquisition Corp. and Chairman of Pine Island Capital Partners LLC.

He is also on the board of 9 other companies.

In the past Mr. Thain was Executive Chairman for Efficient Finance Ltd., President, Chief Operating Officer & Director at The Goldman Sachs Group, Inc., President-Global Banking & Securities at Bank of America Corp. Chairman & Chief Executive Officer at Merrill Lynch & Co., Inc. Chairman & Chief Executive Officer of Merrill Lynch, Pierce, Fenner & Smith, Inc. (Old), Chairman & Chief Executive Officer at Merrill Lynch, Pierce, Fenner & Smith, Inc. (Old), Chairman & Chief Executive Officer of Merrill Lynch Canada, Inc. Chairman at Merrill Lynch & Co. Canada Ltd. and Chairman & Chief Executive Officer for Merrill Lynch & Co., Inc. (which are all subsidiaries of Bank of America Corp.), Chairman for CIT Group, Inc., Chief Executive Officer & Director at New York Stock Exchange, Inc., Chief Executive Officer & Director at NYSE Group, Inc. and Chief Executive Officer & Director at NYSE Euronext, Inc.

He received an undergraduate degree from Massachusetts Institute of Technology and an MBA from Harvard University.