New & Improved Mobile App Coming Soon! On 12/10, the GSB Mobile App will be updated with new features, including enhanced security, improved transfer and bill pay capabilities, and the ability to send us a secure message.

Please Note: Card Controls users will need to reestablish debit card preferences after the upgrade. Simply click on the “More” link in the app, then select “Cards” to get started.

Our Customer Service Center, including Video Teller Machines will close early Tuesday, December 10th at 5:00pm so employees can participate in our annual Holiday Party. Thank you for understanding!

Browse our Security Center for tools and resources to protect your privacy and personal financial information. Find online banking security tips along with information on common scams. If you are ever in doubt, call us directly at (207) 839-4796.

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MEET THE TEAM

Jonathan Berg

VP, Commercial Banker

Small Business Team

Photo of Jonathan Berg, Commercial Banker

India Street

1 India Street, Portland, ME

Email Me

(207) 221-8449

Serving Portland and surrounding areas

Jonathan has over 15 years of experience in commercial banking. He joined GSB in 2018 as Senior Portfolio Manager, after working for other financial institutions in the local area. He enjoys connecting with local business owners to understand and support their financing needs. Jon believes our dedication to helping our customers and community is evident in all we do.

Jon holds a bachelor’s in accounting from the University of Southern Maine.