Power of Attorney Appointment for Benjamin Mackovak

This filing is a Limited Power of Attorney appointment for Benjamin Mackovak, a Director at FIRSTSUN CAPITAL BANCORP (FSUN). The document, signed on April 1, 2026, grants power of attorney to Rob Cafera, Kelly Rackley, Kyle Reeves, and Lindsey Wolfe. They are authorized to execute and file SEC forms, including Form 3, Form 4, Form 5, Schedule 13D, and any amendments, on behalf of Mr. Mackovak. This authorization pertains to his reporting requirements as an officer and/or director of the company. The attorneys-in-fact are empowered to take any necessary actions to complete and file these forms, with the understanding that they do not assume Mr. Mackovak's compliance responsibilities under Section 16 or Regulation 13D-G. Mr. Mackovak agrees to indemnify the attorneys-in-fact and the Company against any claims arising from false information provided. The power of attorney remains in effect until Mr. Mackovak is no longer required to file such forms or until it is revoked in writing.