Sentinel Investments has made management changes at four of its mutual funds.

Senior vice president Betsy Pecor, along with vice presidents Carole Hersam and Matthew Spitznagle, will take over management of the Sustainable Growth Opportunities Fund. They replace Elizabeth Bramwell, who has retired.

The fund will be renamed the Sustainable Mid Cap Opportunities Fund.

Meanwhile, senior vice president, and risk specialist, Jason Doiron joins as a portfolio manager to three funds: Sentinel’s Balanced; Government Securities, and Short Maturity Government Funds. Doiron oversees fixed income and derivatives management for Sentinel.

Doiron will work closely with senior vice president Daniel Manion, who becomes lead portfolio manager for the Balanced fund. Manion heads Sentinel’s equity research function and also manages three other funds, Sentinel’s Common Stock, Conservative Strategies and Sustainable Core Opportunities, in addition to the Balanced fund.

“We have an experienced team that not only has proven expertise, but great enthusiasm for Sentinel’s process and a clear commitment to our firm,” said Christian Thwaites, president and chief executive of Sentinel, in a statement. “It only makes sense that we leverage that team as much as possible to benefit our shareholders.”

All changes will go into effect on March 29.

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