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Let's talk
Your Client Service Specialists can be reached directly at the National Service Center:
P: 866.355.0468 (8:00 am to 8:00 pm Eastern)
F: 866.355.7099 or 919.314.3080
Square 1 Financial
406 Blackwell Street, Suite 240
Durham, North Carolina 27701
Outside of traditional business hours, please send an email to nsc@square1bank.com,
and someone will respond to you shortly.
Secure Email:
In our commitment to maintain confidentiality and to protect your secure information, we have implemented Zixcorp's secure email solution. If you need to send us an email containing personally identifiable data, please log in below, or create your account, to contact us securely.
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