Security Trust & Savings Bank
Storm Lake, IA FDIC 968 $100M-$500M
Quarter Ended
Q1'26
Data as of March 31, 2026
Quarterly Snapshot
Metric Q1'26 YoY Δ Q1'25
Profitability
Return on Assets (%) 1.18% +0.32 0.86%
Return on Equity (%) 12.65% +2.06 10.59%
Net Interest Margin (%) 2.63% +0.33 2.29%
Efficiency Ratio (%) 55.42% -4.86 60.28%
Pre-Provision Profit ($M) $1 +0.19 $1
Cost of Funds (%) 1.57% -0.48 2.06%
Balance Sheet
Total Assets ($M) $284 +1.68 $282
Gross Loans ($M) $80 +0.68 $79
Loan Growth YoY (%) 30.44% +0.34 30.10%
Total Deposits ($M) $257 -0.84 $258
Shareholders Equity ($M) $26 +2.58 $23
Tang. Book Value ($M) $25 +2.63 $22
TBV excl. AOCI ($M)** $30 +2.31 $27
Loan / Deposit Ratio (%) 30.44% +0.34 30.10%
Credit Quality
NPA / Total Assets (%) 0.22% -0.04 0.26%
Allowance / Loans (%) 1.75% 0.06% 1.69%
Net Charge-Off Ratio (%) 0.79% -0.15 0.94%
Capital
Tier 1 Capital Ratio (%) 31.34% +1.76 29.59%
** TBV excl. AOCI adds back unrealised losses on AFS securities to show capital excluding mark-to-market interest rate impact.
8-Quarter Trend
Metric Q2'24 Q3'24 Q4'24 Q1'25 Q2'25 Q3'25 Q4'25 Q1'26
▁▁▁▅▆▆▇█ Net Interest Margin (%) 1.86% 1.81% 1.91% 2.29% 2.40% 2.40% 2.47% 2.63%
▁▁▁▅▆▇▇█ Return on Assets (%) 0.44% 0.40% 0.48% 0.86% 0.96% 1.00% 1.01% 1.18%
██▇▂▁▁▁▁ Efficiency Ratio (%) 74.3% 76.2% 72.1% 60.3% 57.8% 56.3% 56.2% 55.4%
█▇▆▃▄▃▂▁ Cost of Funds (%) 2.87% 2.65% 2.48% 2.06% 2.14% 2.03% 1.87% 1.57%
▁▆▇█▇▇▇▇ NPA / Assets (%) 0.01% 0.20% 0.20% 0.26% 0.22% 0.21% 0.21% 0.22%
▁▇▆█▇▇▆▇ Net Charge-Off Ratio (%) 0.04% 0.73% 0.68% 0.94% 0.76% 0.77% 0.71% 0.79%
▁▅▂▅▅███ Tang. Book Value ($M) $19 $22 $20 $22 $23 $24 $25 $25
▂▁▆▅▃▁█▅ Gross Loans ($M) $76 $75 $80 $79 $77 $76 $82 $80
▁█▄█▁▇▃█ Total Deposits ($M) $242 $259 $249 $258 $244 $256 $248 $257
Portfolio Composition — Q1'26
Loan Mix%
Real Estate57%
C&I / Commercial8%
Agricultural32%
Consumer2%
Deposit Mix%
Nonint.-Bearing Demand6%
Interest-Bearing (core)87%
Brokered / Other7%
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