Home BancShares, Inc. (Home) and its wholly-owned bank subsidiary, Centennial Bank, are acquiring Mountain Commerce Bancorp, Inc. (MCBI) and its wholly-owned bank subsidiary, Mountain Commerce Bank (MCB), as previously announced on December 7, 2025. The Registration Statement on Form S-4, filed by Home on January 13, 2026, and amended on January 29, 2026, was declared effective by the SEC on January 30, 2026, and MCBI mailed the proxy statement/prospectus to its shareholders around that date. Supplemental disclosures are being made in response to two requests from purported MCBI shareholders to avoid the risk of delay, minimize potential expense, uncertainties, and distraction, and to provide additional information, although Home and MCBI deny the legal necessity of such disclosures. The supplemental disclosures update information regarding standstill provisions in non-disclosure agreements, comparable company analyses for MCBI and Home, and net present value analyses, including discount rate calculations and estimated EPS/TBVPS accretion metrics for Home. As of March 1, 2026, only one standstill provision from a non-disclosure agreement dated March 6, 2025, remains in effect, expiring on March 6, 2026; no companies with prior non-disclosure agreements have contacted MCBI regarding a potential acquisition since the merger announcement. The merger is projected to be accretive to Home's Earnings Per Share (EPS) by 1.4% in 2026, 3.0% in 2027, and 3.4% in 2028. Tangible Book Value Per Share (TBVPS) accretion for Home is estimated at 0.2% at closing, 0.5% in 2026, 1.0% in 2027, and 1.5% in 2028. Unaudited prospective financial information for Home on a standalone basis includes estimated Net Interest Income of $916 million for 2026 and $944.9 million for 2027, and estimated Earnings Per Share of $2.44 for 2026 and $2.53 for 2027.