The MoneyPass® ATM Network is here! Use your Sunflower Bank and First National 1870 Visa® debit card to access approximately 40,000 surcharge-free ATMs nationwide, including Puerto Rico.
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Exciting news! Guardian Mortgage is rebranding under the Sunflower Bank name. Over the coming weeks, you’ll begin to see the Sunflower Bank brand in your mortgage-related emails, statements, and other communications. Check our FAQ page:
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About Sunflower Bank, N.A.

Operating as Sunflower Bank, First National 1870 and Guardian Mortgage, Sunflower Bank, N.A. provides financial solutions to the individual communities we serve through a full range of relationship-focused services to meet personal, business and wealth management financial objectives.

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Whether you know us as Sunflower Bank, First National 1870 or Guardian Mortgage, our philosophy is simple: we offer a full range of financial products that create possibility in the lives we touch and the communities we serve. We value the needs of each customer and partner with them to help achieve their goals through innovative solutions and locally informed decision-making. 

We are proud of our longevity and the long-term relationships it represents. Sunflower Bank was founded in 1892. We operate as First National 1870 in Albuquerque, Los Alamos and Santa Fe, New Mexico with roots dating back to 1870. Additionally, Guardian Mortgage, our residential mortgage division, has helped generations of valued customers across our footprint and beyond realize their dreams of homeownership.

Our Growth

Sunflower Bank, N.A. has $8.2 billion in assets as of March 31, 2025, headquarters in Dallas, TX, 71 licensed depository branches, and mortgage capabilities in 43 states. FirstSun Capital Bancorp (NASDAQ: FSUN) is the financial holding company for Sunflower Bank, N.A.

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$8.2 billion in assets

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71 licensed branches

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Originate mortgages 

in 43 states

Get to Know Sunflower Bank

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    Client Stories

    We have the opportunity to work with amazing clients. The stories of how they found success are inspirational. It is a privilege to serve as their financial partner.

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    Our Mission & Community Involvement

    We believe in creating possibility at both the individual and community level. It’s about creating a legacy that makes us proud and provides a solid foundation for the future.

    Learn More in Our Mission & Community Involvement
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    Company Culture

    Sunflower Bank is more than just another place to work. See why our people love to work here.

    Learn More in Company Culture

Company Achievements

Bauer Financial 5 Star Rated Bank Award for March 2025


BauerFinancial 5-Star Rated Bank, March 2025

We are proud to be recognized as a BauerFinancial 5-Star rated bank for another consecutive quarter. The designation represents a Superior rating and recommendation from this leading independent bank research firm.