▪ $25.0 million deal value ($19.12 per share); 100% cash consideration ▪ 108% P/TBV; 16.1x P/2025E Earnings ▪ Approximately 37% cost savings (75% realized in 2026 and 100% realized thereafter) ▪ Pre-tax merger-related charges of ~$6.1 million (1.8x fully phased-in cost savings) ▪ 1.00% ($2.8 million) gross credit mark; 2.87% ($8.0 million) loan interest rate mark-down ▪ $1.8 million HTM securities mark-down; $1.4 million time deposit mark-down ▪ Anticipated transaction close in Q1 2026 Acquisition of CedarStone Financial, Inc. Transaction Overview Key Transaction Assumptions THFF (3/79) CedarStone (3) Pro Forma Financial Impact -3.0% TBV Dilution (at close) ~2.2 yrs. TBV Earnback 8.7% Pro Forma TCE Ratio 6.6% 2026E EPS Accretion(3) 8.0% 2027E EPS Accretion(4) Market Share Gain – Nashville MSA(2) Franchise Overview – Nashville MSA(1) (1) Map only depicts First Financial Corporation branches located in the Nashville MSA (2) Deposit and market share data as of June 30, 2025 (3) Assumes 75% phase-in of cost saves; represents 3/4 year impact (4) Assumes 100% phase-in of cost saves (5) Core deposits defined as total deposits less time deposits of $100k or greater Source: Company documents; S&P Capital IQ Pro Market Number of In-Market Market Rank Locations Deposits Share Institution (#) (#) ($MM) (%) CedarStone Financial, Inc. 36/65 3 305.3 0.3 First Financial Corp. 49/65 3 123.1 0.1 Pro Forma 29/65 6 428.5 0.4 1 0.8% Core Deposit Premium(5)