This comparison uses public regulatory filings and TFS methodology. It evaluates financial condition—not checking rates, account fees, service quality, or which institution is universally “best.”
Bank
Oklahoma City, OK
Health score
86.7
Total assets
$949.9M
Bank
Tulsa, OK
Health score
91.7
Total assets
$939.0M
Answer first
First National Bank of Oklahoma leads on profitability and growth; Security Bank leads on financial health and capitalization and lending quality. Those category leads describe current regulatory metrics only and do not establish a universal product or service winner.
Capital and asset-quality definitions are directly comparable for this pair.
Category leaders
Financial health
Security Bank
Higher TFS health score
Capitalization
Security Bank
Higher comparable capital ratio
Profitability
First National Bank of Oklahoma
Higher return on assets
Lending quality
Security Bank
Lower problem-loan measure
Growth
First National Bank of Oklahoma
Higher year-over-year asset growth
Same-source detail
Winner markers appear only where the metric definitions are comparable and both values are available.
| Metric | First National Bank of Oklahoma | Security Bank |
|---|---|---|
| TFS health score | 86.7/100 | 91.7/100Leads |
| Total assets | $949.9M | $939.0M |
| Total deposits / shares | $807.0M | $827.5M |
| Tier 1 capital ratio | 10.46% | 11.84%Leads |
| Return on assets | 2.33%Leads | 2.18% |
| Return on equity | 22.80%Leads |
First National Bank of Oklahoma
4 branches
Security Bank
1 branches
Both institutions report branches in 1 state: OK.
First National Bank of Oklahoma
Unavailable
Security Bank
Unavailable
Counts use an explicitly reviewed CFPB-company-to-regulatory-ID mapping and the same complete 12-month window. Parent-company attribution can include complaints involving affiliates. Lower complaint volume is context—not proof of better service or less consumer harm.
First National Bank of Oklahoma
0 in TFS registry
Security Bank
0 in TFS registry
Institution-level actions come from TFS's exact regulatory-ID registry and are shown as factual context only. They do not affect category winners or the TFS Financial Health Grade. A zero means no action is currently published in this curated registry—not proof that none exists.
Quarterly history
| Quarter | First National Bank of Oklahoma score | First National Bank of Oklahoma ROA | Security Bank score | Security Bank ROA |
|---|---|---|---|---|
| 2024-Q3 | — | 1.68% | — | 2.24% |
| 2024-Q4 | — | 1.75% | — | 2.20% |
| 2025-Q1 | — | 2.02% | — | 2.33% |
| 2025-Q2 | — | 2.12% | — | 2.34% |
| 2025-Q3 | — | 2.20% | — | 2.29% |
| 2025-Q4 | — | 2.14% | — | 2.31% |
| 2026-Q1 | 90.5/100 |
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Coverage boundaries
Related comparisons
Financial data comes from FDIC BankFind Suite or NCUA Call Reports as labeled. TFS Health Grades are an editorial assessment, not an official government rating or financial advice. Arbitrary comparison pairs are available dynamically but remain noindex unless curated for data completeness and user value.
| 18.73% |
| Non-performing loans | 1.39% | 0.15%Leads |
| Net charge-offs | 0.07% | 0.02%Leads |
| Efficiency ratio | 45.41% | 43.04%Leads |
| Loan-to-deposit ratio | 91.95% | 91.78% |
| Asset growth (YoY) | 8.76%Leads | 3.96% |
| Deposit / share growth (YoY) | 5.41%Leads | 3.54% |
| Branches | 4 | 1 |
| Published CFPB complaints per $1B deposits (12 months)verified mappings only | — | — |
| 2.27% |
| 90.6/100 |
| 2.16% |
| 2026-Q2 | 86.7/100 | 2.33% | 91.7/100 | 2.18% |