Trailmark Bank Opens December 7 After Merger
Adams Community Bank and Pittsfield Cooperative Bank have combined into Trailmark Bank, which holds about $1.5 billion in assets.
Updated on Nov. 2, 2026 in Banking
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Adams Community Bank and Pittsfield Cooperative Bank completed their legal merger effective November 1, 2026, forming Trailmark Bank. The combined bank will officially open for business on Monday, December 7, 2026, after receiving approvals from the Federal Deposit Insurance Corp. and the Massachusetts Division of Banks.
Why it matters
The merger creates a single institution with roughly $1.5 billion in assets and nearly 200 employees serving Massachusetts customers in Berkshire County. Until the combined bank opens, the two banks will operate as divisions of Trailmark Bank.
Trailmark Bank holds approximately $1.5 billion in assets and employs nearly 200 people across its full-service locations in Berkshire County. The source does not provide the individual pre-merger asset levels of Adams Community Bank or Pittsfield Cooperative Bank.
The players
Federal Deposit Insurance Corp.
The Federal Deposit Insurance Corp. is the independent federal agency that insures deposits at U.S. banks and regulates certain institutions, and it approved the merger.
Massachusetts Division of Banks
The Massachusetts Division of Banks is the state agency that supervises state-chartered banks and credit unions, and it approved the merger.
The details
Customers will continue to use existing checks, debit and ATM cards, and online and mobile banking during the transition period. Detailed information outlining important dates and any required customer actions will be sent in the coming weeks.
Timeline
Nov. 1, 2026: Merger legally took effect.
Monday, Dec. 7, 2026: Trailmark Bank officially opens for business.
Market Landscape
The merger follows the standard federal and state regulatory approval path that small and mid-sized community banks use to consolidate. Combining two regional institutions into a single bank of about $1.5 billion in assets gives the new entity greater scale in Berkshire County.
Customers keep their existing checks, debit and ATM cards, and online and mobile banking access during the transition. Once Trailmark Bank opens, account holders will have access to all of its branch locations across Berkshire County.
The takeaway
Account holders should watch for transition notices in the coming weeks and keep their existing cards and online banking access in use until Trailmark Bank opens. Reviewing the dates in advance helps avoid disruptions to direct deposits and bill payments.
What happens next
Trailmark Bank officially opens for business on Monday, December 7, 2026, and customers will receive detailed transition information in the coming weeks.
Further reading
For more on how regional bank mergers affect local account holders, explore Banking coverage.
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