NBT Bank Announces Expanded Leadership Roles for Gilligan, Derwitsch in Berkshire County

Pittsfield, MA (October 28, 2025) – NBT Bank Regional President Andreas Kapetanopoulos announced that Aidan Gilligan has assumed an expanded role leading commercial banking for NBT Bank in Berkshire County.

As a senior commercial banking relationship manager, Gilligan oversees NBT’s efforts to deliver commercial banking solutions tailored to the specific needs of local businesses and organizations. In addition to lending, this includes deposit and treasury management services and the bank’s robust digital banking tools.

Gilligan is supported by Adam Derwitsch, who works closely with clients and team members in Berkshire County as a commercial portfolio manager.

“Aidan and Adam represent the next generation of banking leadership in Berkshire County,” said Regional President Andreas Kapetanopoulos. Kapetanopoulos’ responsibilities were also recently expanded to include Massachusetts, in addition to overseeing NBT’s presence in Connecticut. “Their promotions reflect their individual talent and the momentum we’re seeing in Berkshire County. As we continue to grow, having strong, community-focused professionals in key roles ensures we are delivering the kind of personalized service and strategic insight our clients expect.”

Gilligan joined NBT in 2023 through its merger with Salisbury Bank and has more than 13 years of experience in financial services. Prior to banking, he worked in the insurance industry as an account executive at Wheeler & Taylor Insurance in Great Barrington. Gilligan is a 2025 graduate of NBT’s Emerging Leaders professional development program.

A native of Sheffield, Massachusetts, Gilligan holds a bachelor’s degree from Southern New Hampshire University and graduated from the Connecticut School of Finance & Management. In 2021, he received recognition as one of the New Leaders in Banking by the Connecticut Bankers Association. Active in his community, Gilligan coaches with the Berkshire Rattlers Youth Hockey Organization and volunteers with Fairview Hospital in Great Barrington. He previously served on the Board of Directors of the Eagle Fund, Sheffield Kiwanis, Wyantenuck Country Club and the Southern Berkshire Chamber of Commerce.

Derwitsch joined NBT in 2023 as associate credit officer, contributing to the bank’s strong credit culture. In his expanded role, he will oversee portfolio management of the Berkshire County loan portfolio including credit and risk evaluation, financial analysis and modeling. With a bachelor’s degree in accounting from Clemson University’s Wilbur O. & Ann Powers College of Business, Derwitsch brings a strategic mindset to support sound lending decisions and long-term client success.