Ergo Bank
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Data as of · sourced from FFIEC call reports. How we update
Ergo Bank is an FDIC-insured commercial bank headquartered in Markesan, WI, established in 1910 (FDIC certificate 10004), and it is supervised by the FDIC. At Q2 2026 it reported total assets of $276.7M, up 12.6% from Q2 2025, the 104th largest of 153 banks headquartered in Wisconsin. Its CET1 capital ratio was 9.67% at Q2 2026, above the 7% level required once the capital conservation buffer is included.
- Charter
- Commercial bank
- Regulator
- FDIC
- Deposit insurance
- FDIC
- FDIC certificate
- 10004
- Headquarters
- Markesan, WI
- Established
- 1910
- Total assets, Q2 2026
- $276.7M
- Assets vs Q2 2025
- +12.6%
- CET1 ratio, Q2 2026
- 9.67%
- Domestic offices
- 6 FDIC institution directory, current count
- Routing number
- 075903763
- Holding company
- FS BANCSHARES, INC.
- Asset rank in state
- 104th of 153 in Wisconsin
Ergo Bank operates with a thinner capital cushion than most banks of its size. Based in Markesan, Wisconsin, it had $277 million in assets at June 30, 2026, up 12.6% from a year earlier. It holds common equity equal to 9.67% of its risk-weighted assets, lower than about 9 in 10 of the 2,660 banks with $100 million to $1 billion in assets (median 15.12%). It also carries problem assets equal to 16.4% of the capital and reserves that would absorb them, 6.2 times the median of 2.6% for banks its size. It has also been growing, with assets up 12.6% in a year.
Net income for the quarter rose 13% from a year earlier, to $551,000. Over the same year, loans grew 13.6% and deposits grew 7.7%. Concentration is the risk to watch: it holds commercial real estate loans worth 2.7 times its capital, about double the median of 1.2 times for banks its size.
As of June 30, 2026, Ergo Bank reported a CET1 capital ratio of 9.67%, a return on assets of 0.81%, a nonperforming-loan ratio of 1.74% and a Texas ratio of 16.36%. The figures come from its call report filed with the FFIEC.
Of the 153 banks headquartered in Wisconsin, Ergo Bank is the 104th largest by total assets at Q2 2026. Quarter on quarter (Q1 2026 to Q2 2026), its total assets rose 5.3% to $276.7M, loans rose 5.4% and deposits rose 2.0%. Its loan book on June 30, 2026 was led by non-owner-occupied commercial real estate loans, at 25.6% of total loans, followed by farmland and other real estate loans at 22.4%. The FDIC Summary of Deposits lists 6 offices for it, in 6 cities in WI; its Markesan office books 33% of its branch deposits. On its Q2 2026 call report, Ergo Bank meets every capital ratio test for well capitalized.
Headquarters Profile
- Address
- 730 N Margaret St, Markesan, WI 53946
- County
- Green Lake
- Charter
- Commercial bank, state charter, Fed non-member, FDIC-supervised
- Primary Regulator
- FDIC
- FDIC Region
- Chicago (Region 9)
- Federal Reserve member
- No
- Federal Reserve district
- District 7, Chicago
- Fiduciary (trust) powers
- Trust powers not granted
- Call Report form
- FFIEC 051
- Established
- January 20, 1910
- Domestic offices
- 6 FDIC institution directory, current count
- Employees (FTE)
- 52
- Domestic deposits
- $226.2M
- Allowance for credit losses
- $2.5M
- Net charge-offs (YTD)
- -$3K
- Average total assets
- $271.8M
- Average total loans
- $220.2M
- Average interest-bearing deposits
- $204.5M
- Tax status
- C corporation
- Ownership
- Stock
- Community bank
- Yes
- FDIC-insured since
- January 1, 1934
- FDIC Cert
- 10004
- Fed RSSD
- 599643
- SEC CIK
- 1961843 → filed by FS BANCSHARES, INC.
- Website
- www.ergobank.com →
- Parent Holding Company
- FS BANCSHARES, INC. (RSSD 1249691)
Profitability
Q2 annualizedCapital & Liquidity
Balance Sheet
Income Statement
Operating & Funding
Ratios tagged annualized use the Q2 income alone. The UBPR and FDIC annualize the year to date instead. FDIC BankFind divides by the average of quarter-end total assets, the UBPR by RC-K average assets. The YTD margin is the UBPR's tax-equivalent figure over its own average earning assets; FDIC BankFind's margin is not tax-equivalent. How we compute these figures
Quarterly trends
From Q3 2023 to Q2 2026, Ergo Bank's total assets ranged from $223.3M (Q3 2023) to $276.7M (Q2 2026), and it earned a profit in 11 of the 12 quarters. The line under each chart compares Q2 2026 with Q2 2025. How these charts are built
$276.7M total assets against $245.8M; $251.2M total liabilities against $221.7M.
$222.3M net loans and leases against $196.3M; $226.2M total deposits against $209.9M.
$32.6M securities against $31.0M; $6.8M cash and balances due against $6.5M.
$4.0M total interest income against $3.7M; $1.4M total interest expense against $1.3M.
$2.6M net interest income against $2.4M.
$176K total noninterest income against $180K; $2.2M total noninterest expense against $1.9M.
$52K provision for credit losses against $52K.
$551K net income against $488K.
0.81% return on assets against 0.79%; 4.19% net interest margin against 4.09%.
9.67% CET1 capital ratio against 10.22%; 8.42% tier 1 leverage ratio against 8.72%.
Inside the full Ergo Bank terminal
21 quarters of trends · 8 tabs · peer percentiles · watchlist alerts
Unlock this bank, freeWatch flags
Automated conditions triggered on this bank's latest filing. Advisory only; see the source metric pages for full context. Each flag is tagged Regulatory when it cites an official supervisory threshold, or BRR analysis when it's our own band, informed by our data and models.
Commercial real estate loans are between 200% and 300% of total capital, approaching the 2006 interagency guidance threshold of 300% that triggers heightened supervisory attention. BankRegReports early-warning band below the 300% guidance.
Ergo Bank rankings
Its closest position to the top of a national ranking is 260 of 3,640, for Texas Ratio; its furthest is 2,118 of 2,134, for CET1 ratio.
Quarterly trend: last 8 quarters
From Q3 2024 to Q2 2026, its return on assets ran from -0.17% (Q1 2026) to 0.81% (Q2 2026) and its net interest margin ran from 3.79% (Q3 2024) to 4.63% (Q4 2025).
| Quarter | CET1 | ROA | NPL | Texas | NIM |
|---|---|---|---|---|---|
| Q2 2026 | 9.67% | 0.81% | 1.74% | 16.36% | 4.19% |
| Q1 2026 | 10.13% | -0.17% | 1.74% | 15.68% | 4.10% |
| Q4 2025 | 10.61% | 0.55% | 1.69% | 14.65% | 4.63% |
| Q3 2025 | 10.73% | 0.51% | 1.89% | 16.28% | 4.04% |
| Q2 2025 | 10.22% | 0.79% | 1.83% | 16.86% | 4.09% |
| Q1 2025 | 10.21% | 0.72% | 1.90% | 17.74% | 3.94% |
| Q4 2024 | 10.26% | 0.67% | 1.90% | 18.02% | 3.90% |
| Q3 2024 | 9.75% | 0.47% | 1.86% | 18.19% | 3.79% |
Swipe the table sideways to see every column.
Branch Network
View all 6 branches → Branch count from the FDIC Summary of Deposits, June 30, 2026. The domestic office count above is the FDIC's current figure, so the two can differ.
| Branch | Location | ZIP | Deposits |
|---|---|---|---|
| Ergo Bank (main office) | Markesan , WI | 53946 | $73.5M |
| 314 West State Street Branch | Fox Lake , WI | 53933 | $61.0M |
| Kendall Branch | Kendall , WI | 54638 | $29.9M |
| Wilton Branch | Wilton , WI | 54670 | $27.6M |
| Lomira Branch | Lomira , WI | 53048 | $21.6M |
| Norwalk Branch | Norwalk , WI | 54648 | $12.6M |
Events & Regulatory History
Mergers, charter changes, enforcement actions, FDIC assistance, and (if applicable) failure events recorded against this institution. Click a year to see what else was happening across US banking that year.
| Date | Category | Event | Source |
|---|---|---|---|
| March 23, 2023 | Structure Change | Acquired Farmers and Merchants Bank of Kendall Charter Discontinued (Merger or Purchase & Assumption) for the acquired bank | FFIEC NIC |
| March 22, 2023 | Merger | Participated in Absorption/Consolidation/Merger | FDIC |
| September 29, 1991 | Structure Change | Acquired State Bank of Fox Lake Charter Discontinued (Merger or Purchase & Assumption) for the acquired bank | FFIEC NIC |
| September 28, 1991 | Merger | Participated in Absorption/Consolidation/Merger | FDIC |
Sourced from the bank event history (FDIC, Federal Reserve NIC, OCC, and OTS). Showing the most recent 4 events.
Regulatory record
Facts as filed or published, not a rating.
- Deposit market share
- 0.1% of deposits in WI, rank 115 of 185 institutions
- Period: June 30, 2026. Source: FDIC Summary of Deposits.
- SBA 7(a) lending
- 2 loans, $1.3M approved, $645K average. 0.00% of that year's loans have since been charged off
- Period: Federal fiscal year 2025 (October to September). Source: SBA 7(a) and 504 loan data (FOIA).
- Not on file
- Enforcement actions, Mortgage lending (HMDA), Consumer complaints, CFPB enforcement, CRA examination rating. No record from these sources, which is not the same as a clean record. Sources
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Frequently asked about Ergo Bank
What are Ergo Bank's total assets?
As of the Q2 2026 filing, Ergo Bank reported total assets of $276.7 million in its FFIEC call report.
Where is Ergo Bank headquartered?
It is headquartered in Markesan, WI, United States.
When was Ergo Bank founded?
It was established in 1910, per the FDIC institution directory.
Is Ergo Bank FDIC-insured?
Yes. It is an FDIC-insured commercial bank (FDIC Certificate #10004). Deposits are insured up to $250,000 per depositor, per insured bank, for each account ownership category, per FDIC rules.
Who regulates Ergo Bank?
Ergo Bank's primary federal regulator is the FDIC.
What is Ergo Bank's CET1 capital ratio?
It reported a Common Equity Tier 1 (CET1) capital ratio of 9.67% in its Q2 2026 call report, above the 7% level required once the capital conservation buffer is included.
How many branches does Ergo Bank operate?
It operates 6 domestic offices, per the FDIC institution directory. That count includes administrative and limited-service offices as well as full-service branches.
What is Ergo Bank's Texas Ratio?
Its Texas Ratio is 16.36% in its Q2 2026 call report, within the healthy range (at or below 50%, the level at which problem assets reach half of the capital cushion). The Texas Ratio measures non-performing assets against the bank's capital and reserves.
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