Cornerstone Finl Services Group
Cornerstone Finl Services Group is a bank holding company that controls 1 federally insured institution with $536.1M in combined assets.
Source: U.S. FDIC BankFind & NCUA 5300 Call Report (public data). Data sources · Data as of Q1 2026
A holding company is the parent corporation that owns one or more banks or credit unions. Each institution below keeps its own charter and federal deposit insurance — they are listed here together because they share Cornerstone Finl Services Group as their ultimate owner.
Institutions owned by Cornerstone Finl Services Group
Every bank and credit union controlled by this holding company, by total assets. Each links to its full profile, branches and ownership history.
| # | Institution | Type | Location | Total assets | Deposits | Branches |
|---|---|---|---|---|---|---|
| 1 | South Ottumwa Savings Bank | Bank | Ottumwa, IA | $536.1M | $445.7M | 6 |
Source: FDIC holding-company structure data (public domain). Ownership reflects the latest federal filings. Data sources · Data as of Q1 2026