About Us
Transact Bank is an innovative, federally chartered and FDIC insured bank headquartered in Denver, Colorado with the sole mission of delivering payment solutions and services to merchants and channel partners globally.
Transact Bank was built for transactions, not distractions. Our banking solutions move money online, across networks, and around the world.
Our focus, technology and investments are not bogged down with consumer banking, lending or branch services, allowing us to be nimble in our response to industry trends and client needs.
Experience
The Transact Bank financial group was formed in 2018 through an acquisition of Colorado National Bank. Transact Bank is affiliated with Transact Pro (est. in 2004, principal member of Visa, Mastercard, SWIFT and SEPA), a leading payment processing and gateway provider in European Union.
Transact Bank is regulated by the U.S Department of the Treasury, Office of the Comptroller of the Currency, Western District.

The financial group was formed from:
Transact Bank
Formerly Colorado National Bank. USA Federal banking charter, Federal Reserve System direct member, member of FDIC, member of Mastercard, Visa, and SWIFT.
Transact Pro
EU financial license, Principal member of Visa, Mastercard, SWIFT and SEPA. Bank’s services for European companies are offered by financial group’s member — e-money institution Transact Pro.
Board members
Mark Moskvin
Chairman of the BoardMark Moskvin is an entrepreneur, payments innovator, and the founder, principal owner, chief executive officer and chairman of Transact Bank N.A. Mark’s career in payments dates back to 1995 when he led the payment processing arm of Norddeutsche Landesbank in his native Latvia (European Union). In 2004, Mark self-funded the launch of a new gateway services business, Transact Pro. Over time, Transact Pro became a licensed financial institution and a vertically integrated payments company. Transact Pro now processes 10 million transactions per month for 2,500 customers across Europe. Mark’s vision has always been to provide small and medium enterprise merchants as well as institutional clients with a superior cross-border and domestic payments service. To help achieve that vision, Mark purchased Colorado National Bank (CNB), a Denver-based, Federally-chartered bank, in August 2018. In March, 2020, CNB rebranded to Transact Bank N.A., a payments-focused bank. The combined resources of Transact Bank and Transact Pro create a new value chain and payments ecosystem that reduces processing costs while improving the reliability of cross-border payments. In addition to his investments in the payments industry, Mark also has a controlling interest in a technology venture, CorpData LLC, and a textile lifting manufacturer, Avocet Lifting. Mark holds a bachelor’s degree in economics and a master’s degree in international economic affairs from the University of Latvia. He now resides in Miami, Florida with his wife and their 4 children.
Read moreJohn G. Sprengle
⠀John Sprengle is a senior executive with more than 23 years of experience in the commercial banking industry and over 10 years as a cofounder and executive in a start-up that grew to become one of the largest publicly-traded REITs in its sector. He is currently the executive vice president of the Bank responsible for credit policy, administration, financial reporting, operations, and regulatory matters. John joined Colorado National Bank (now Transact Bank) in January 2011 as an executive vice president responsible for Acquisitions and Due Diligence. In March 2012, he was named chief credit officer of the Bank and in August 2012, he became the president of the Bank. From 1994 to 2005, John served in various capacities as an executive officer of Affordable Residential Communities (ARC), a manufacture home communities REIT, including chief financial officer, president, and chief operating officer. His responsibilities included the development and implementation of the company’s operating infrastructure, including policies, procedures, financial controls, management processes, and investor relations. He co-managed ARC’s initial public offering in 2004, and also managed ARC’s real estate due diligence and underwriting of all acquisitions, and was responsible for all lender relationships. Prior to cofounding ARC, John was employed by BancTEXAS Group, Inc, a Dallas-based bank holding company. As senior vice president and chief credit officer, he served as a member of the Chairman of the Credit Policy and Loan Committees and as a member of the Asset/Liability Management Committee and the Employee Compensation and Benefits Committee. John holds a BS in Business Administration from Colorado State University.
Read moreGuy Rounsaville, Jr.
⠀Guy Rounsaville, Jr. has a professional career spanning over 50 years, primarily in the financial services sector. He currently serves on the board of Medley Management Corp., and previously served on the boards of several banks, namely, Tri-Valley Bank, First Bank Corp., and United American Bank. In his capacity as independent consultant, he serves as General Counsel for QueensCare, a medically related non-profit corporation located in Los Angeles. Guy began his career at Wells Fargo in 1969 where he spent nearly 30 years, mostly serving as General Counsel and Corporate Secretary. Following Wells Fargo, he was with Allen Matkins as co-managing partner of the law firm’s San Francisco office and head of the firm’s corporate department. From 2001 - 2008, he held various General Counsel and Corporate Secretary positions for Visa International, LaSalle Bank/Bank of America, and the Doctors Company. Guy holds a B.A. from Stanford University where he co-captain the 1964 Stanford Football Team. He earned a J.D. from UC Hastings College of the Law. He resides in Hillsborough, California with his wife of 46 years, Lenore. They have two adult daughters.
Read moreDaniel Westgarth
⠀Dan Westgarth has a professional career exclusively in financial technology. He currently serves as a FinTech executive at a growth stage fintech, and advises the boards of a number of other smaller startups. In his capacity as an investor, he founded Expansion Capital Ltd., a London based FinTech investment firm which deploys cash earned by founders and operators of successful companies in the industry. Dan was an early employee at Revolut, where he spent approximately five years scaling the business which became Europe’s largest challenger bank. During this time, he architected and launched payments products and businesses across the Americas and Europe.
Read moreJim Feehan
⠀Jim Feehan offers more than 30 years of experience in accounting, finance and taxation. His experience includes financial reporting, budgeting, banking and investor relations, tax compliance review and staff supervision. Jim founded the CFO Advisory Group in 2002, a consulting firm that provides CFO/controller services to small and medium sized companies in various segments including start-up, real estate, finance and agriculture. In addition to CFO and controller services, the firm provides workout and liquidation services for various financial institutions and secured lenders. Jim began his career within the audit group at Coopers & Lybrand, an International CPA firm, in 1981. During his eight-year tenure, he worked with both publicly and privately held entities in the areas of taxation and attestation, rising to a manager/supervisory position in the audit and tax departments. Subsequent to his tenure at Coopers & Lybrand, he has held the position of CFO and controller for privately held entities and also provided financial consultation for numerous individuals and start-up entities. Jim served as a senior vice president of Finance, controller and director of Tax for a $500 million privately-held transportation company in the late 1990’s. Jim is a Certified Public Accountant (inactive). He is a former officer and board member of the Rocky Mountain Turnaround Management Association (TMA) and the Mobile Home Park Owners Association of Colorado. In addition, he has served and volunteered for numerous non-profit organizations. Jim holds a Master of Taxation degree from University of Denver and earned a BS in Business Administration from the University of Nebraska.
Read moreLeadership Team
Mark Moskvin
Chief Executive Officer and ChairmanMark Moskvin is an entrepreneur, payments innovator, and the founder, principal owner, chief executive officer and chairman of Transact Bank N.A. Mark’s career in payments dates back to 1995 when he led the payment processing arm of Norddeutsche Landesbank in his native Latvia (European Union). In 2004, Mark self-funded the launch of a new gateway services business, Transact Pro. Over time, Transact Pro became a licensed financial institution and a vertically integrated payments company. Transact Pro now processes 10 million transactions per month for 2,500 customers across Europe. Mark’s vision has always been to provide small and medium enterprise merchants as well as institutional clients with a superior cross-border and domestic payments service. To help achieve that vision, Mark purchased Colorado National Bank (CNB), a Denver-based, Federally-chartered bank, in August 2018. In March, 2020, CNB rebranded to Transact Bank N.A., a payments-focused bank. The combined resources of Transact Bank and Transact Pro create a new value chain and payments ecosystem that reduces processing costs while improving the reliability of cross-border payments. In addition to his investments in the payments industry, Mark also has a controlling interest in a technology venture, CorpData LLC, and a textile lifting manufacturer, Avocet Lifting. Mark holds a bachelor’s degree in economics and a master’s degree in international economic affairs from the University of Latvia. He now resides in Miami, Florida with his wife and their 4 children.
Read moreJohn G. Sprengle
Chief Operating OfficerJohn Sprengle is a senior executive with more than 23 years of experience in the commercial banking industry and over 10 years as a cofounder and executive in a start-up that grew to become one of the largest publicly-traded REITs in its sector. He is currently the executive vice president of the Bank responsible for credit policy, administration, financial reporting, operations, and regulatory matters. John joined Colorado National Bank (now Transact Bank) in January 2011 as an executive vice president responsible for Acquisitions and Due Diligence. In March 2012, he was named chief credit officer of the Bank and in August 2012, he became the president of the Bank. From 1994 to 2005, John served in various capacities as an executive officer of Affordable Residential Communities (ARC), a manufacture home communities REIT, including chief financial officer, president, and chief operating officer. His responsibilities included the development and implementation of the company’s operating infrastructure, including policies, procedures, financial controls, management processes, and investor relations. He co-managed ARC’s initial public offering in 2004, and also managed ARC’s real estate due diligence and underwriting of all acquisitions, and was responsible for all lender relationships. Prior to cofounding ARC, John was employed by BancTEXAS Group, Inc, a Dallas-based bank holding company. As senior vice president and chief credit officer, he served as a member of the Chairman of the Credit Policy and Loan Committees and as a member of the Asset/Liability Management Committee and the Employee Compensation and Benefits Committee. John holds a BS in Business Administration from Colorado State University.
Read moreNick Filla
General Counsel and SecretaryNick Filla is responsible for all bank legal matters, corporate governance, regulatory matters, and compliance for Transact Bank, N.A. Nick has been practicing law since graduating law school in 2005. Prior to working for Transact Bank, Nick was the General Counsel of Colorado National Bank (CNB) and its parent holding company since 2011 where he was responsible for legal matters, corporate governance, regulatory matters, compliance, enterprise risk management, bank acquisition/sale and due diligence activities, capital raising, securities, and internal audit and human resources oversight. Prior to CNB, Nick was an associate in a New York law firm focused on investment management. Nick is a member of the Colorado and Denver Bar Associations and active in supporting several charitable organizations including Brush Creek Elementary PTA, High Fives, and Phillips Exeter Academy. Nick holds a bachelor’s degree from the University of Pennsylvania, a juris doctorate from Washington University School of Law in St. Louis, and an LL.M. in taxation from the Sturm College of Law at the University of Denver. Nick resides in Eagle, Colorado with his wife and daughter, where they enjoy all aspects of mountain living including skiing, hiking, golf, fishing, rafting, and camping.
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