A cybersecurity vulnerability with third-party software provider, MOVEit, has impacted thousands of companies, including First National 1870. <<Learn More>>

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Sunflower Bank Headquarters

1400 16th St, Ste 250 | Denver, CO 80202

Customer Care Center

Available 8AM-8PM (CT) Monday-Friday and 8AM-4PM (CT) Saturday

Call: 888.827.5564  |  [email protected]

Assistance with:  Personal Online Banking, Business Banking Direct, Account-related questions, etc.

Treasury Management Direct Client Support

Call: 833.377.8265  |  [email protected]

CheckIt – Automated Phone Banking

Call: 800.552.2432

Credit Card & Debit Card Travel Notification

Traveling? Purchases not typical with your spending patterns may trigger fraud alerts for your protection. Call us in advance of any atypical travel or unusual purchase plans. If you are traveling internationally, beyond Canada and Mexico, you must notify us in advance if you intend to use your debit card.

Call: 888.827.5564

Report a Lost or Stolen Debit Card

Call: 800.472.3272

Mortgage Servicing

Request for Information or Notice of Errors must be sent to:

Customer Service
P.O. Box 833890
Richardson, TX 75083-3890

Call: 800.331.4799  |  [email protected]

Guardian Mortgage, a division of Sunflower Bank, N.A.

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