Don founded Grail Partners LLC in early 2005 and is Managing Partner. Prior to founding Grail, he led Putnam Lovell Securities, which he founded in 1987. At Putnam Lovell he served as Chief Executive Officer, Chairman of the Board, and Managing Director in the firm's investment banking group. Putnam Lovell was sold to National Bank Financial in 2002. Until 2005 Mr. Putnam served as CEO and Vice Chairman of Putnam Lovell NBF.
From 1980 to 1986, Don held senior positions at SEI Investments. He was an Executive Vice President and Division President of SEI, founder and President of SEI Financial Services Company, and founder and President of its various mutual funds with assets under management in excess of $15 billion.
Prior to joining SEI, Don was a Senior Consultant at Catallactics Corporation (a subsidiary of SunGard), where he devised new quantitative products and strategies for major banks, including J.P. Morgan, The Boston Company, and Northern Trust Company. From 1973 to 1978, he designed quantitative investment products and other trust services at Bankers Trust Company.