Security Bank Midwest
Security Bank Midwest is the primary bank subsidiary of its parent holding company, headquartered in Tyndall, SD. Total assets stand at $322M. Returns are in line with industry norms at 0.94% ROA and 10.54% ROE; net interest margin is 3.54%. Under the simplified Community Bank Leverage Ratio framework, leverage of 10.27% exceeds the 9% CBLR threshold. Asset quality is solid — 0.68% nonperforming loans and a 6.92% Texas Ratio. It operates 6 branches, primarily in South Dakota.
Headquarters Profile
- Address
- 1600 Main St, TYNDALL, SD 57066
- County
- Bon Homme
- Charter
- Commercial bank, state charter, Fed non-member, FDIC-supervised
- Primary Regulator
- FDIC
- Fed District
- 11
- Established
- November 1, 1932
- Branches
- 6 domestic
- Employees (FTE)
- 33
- FDIC Cert
- 485
- Fed RSSD
- 435255
- Website
- www.sbmidwest.bank →
- Parent Holding Company
- MIDWEST BANCSHARES, INC. (RSSD 4347301)
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Security Bank Midwest rankings
How this bank ranks against the full population of US commercial banks in each leaderboard. Click any rank to see the full ranked list.
Quarterly trend — last 6 quarters
Quarter-over-quarter movement in the five most-watched ratios. Sourced from the bank's own FFIEC call report filings.
Branch Network
Every branch from the FDIC Summary of Deposits — mapped, and listed with the deposits booked at each location.
| Branch | Location | ZIP | Deposits |
|---|---|---|---|
| Loading branches… | |||
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.
- Structure ChangeCharter Discontinued (Merger or Purchase & Assumption)FFIEC NIC
- MergerParticipated in Absorption/Consolidation/MergerFDIC
- Structure ChangeCharter Discontinued (Merger or Purchase & Assumption)FFIEC NIC
- MergerParticipated in Absorption/Consolidation/MergerFDIC
Sourced from unified bank events (FDIC, Federal Reserve NIC, OCC, and OTS). Showing the most recent 4 events.
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Frequently asked about Security Bank Midwest
What are Security Bank Midwest's total assets?
As of the Q1 2026 filing, Security Bank Midwest reported total assets of $321.9 million in its most recent FFIEC call report. All figures come directly from the bank's quarterly Schedule RC filing.
Where is Security Bank Midwest headquartered?
Security Bank Midwest is headquartered in TYNDALL, SD, United States. It files quarterly FFIEC call reports as required of all FDIC-insured commercial banks.
When was Security Bank Midwest founded?
Security Bank Midwest was established in 1932, per the FDIC institution directory.
Is Security Bank Midwest FDIC-insured?
Yes. Security Bank Midwest is an FDIC-insured commercial bank (FDIC Certificate #485). Deposits are insured up to $250,000 per depositor, per insured bank, for each account ownership category, per FDIC rules.
Who regulates Security Bank Midwest?
Security Bank Midwest's primary federal regulator is the FDIC. All FDIC-insured banks also report to the FDIC and, depending on charter, the Federal Reserve.
How many branches does Security Bank Midwest operate?
Security Bank Midwest operates 6 domestic branches, per the most recent FDIC Summary of Deposits filing.
What is Security Bank Midwest's Texas Ratio?
Security Bank Midwest's Texas Ratio is 6.92% — within the healthy range (under 25%). The Texas Ratio measures non-performing assets against the bank's capital and reserves; see our /glossary/texas-ratio/ page for the full definition.
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