The chief executive of Affiliated Managers Group Inc., a Beverly investment firm, received $14.9 million in total compensation last year, down from nearly $20 million in 2010, according to an annual filing with regulators.

Sean M. Healey, the husband of former Massachusetts Lieutenant Governor Kerry Healey, earned the same base salary for the past three years, $750,000. He received a $5 million cash bonus in 2011, down from $7 million the prior year. He also last year received $4.5 million in stock awards, plus options and other compensation.

AMG owns a number of investment firms and oversaw a total of $327 billion at the end of 2011, up two percent from the previous year. Shares fell 3 percent, but that was much better than AMG’s peer group in financial services, which fell an average 26 percent. Incentive compensation declined because the company grew less than in 2010.

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