Bank Branches › Closed and merged banks › Missouri › Sun Security Bank
What happened to Sun Security Bank?
Sun Security Bank in Ellington, MO (earlier called The Quad County State Bank) failed, and Great Southern Bank of Reeds Spring, MO took it over on Oct 7, 2011. Great Southern Bank is open today.
The chain, step by step
From the day it opened to the bank at the end of the chain today. Each step is one entry in the FDIC's record.
- 1970The Quad County State Bank opens in Ellington, MO
- Jan 1, 2004renamed Sun Security Bank
- Oct 7, 2011FAILEDSun Security Bank failed, and Great Southern Bank of Reeds Spring, MO took it over.FDIC certificate 20115 ends; its business continues under certificate 29546.
- TodayOPEN
Great Southern BankMain office Reeds Spring, MO · FDIC certificate 29546 · 105 offices in 7 states on June 30, 2026Every Great Southern Bank office → Website on file with the FDIC: www.greatsouthernbank.com
If you still have something from Sun Security Bank
A lien that was never released
Sun Security Bank failed on Oct 7, 2011. For a failed bank placed in FDIC receivership, the FDIC may be able to issue the lien release, if the loan was paid off to the bank before it failed or to the FDIC afterward. The FDIC says that where a failed bank had an acquirer, its records in most cases went to that acquirer. Here the chain from the acquirer leads to Great Southern Bank, which is worth asking too.
Requests go through the FDIC Information and Support Center with the recorded mortgage or title, and proof of payoff. The FDIC says to allow 30 business days once it has every document, and does not take requests by phone or email. Questions: FDIC Resolution Inquiries, 888-206-4662, 8am–4pm Central on weekdays.
An old account, passbook or CD
When a healthy bank assumes a failed bank's deposits, insured depositors become its customers right away (here, Great Southern Bank). Start with Great Southern Bank, and ask them to search under the name Sun Security Bank.
For failures since mid-1993 the law sets a clock: insured deposits not claimed within 18 months of the FDIC starting to pay depositors are offered to the state of the depositor's last known address on the bank's records. If the state takes them, the owner has 10 years to claim there before the money returns to the FDIC. Check FDIC unclaimed funds search and that state's unclaimed-property program.
A safe deposit box
The FDIC says that when a healthy bank assumes a failed bank's deposits, the branches usually reopen the next business day with box access. Today, ask Great Southern Bank. A box abandoned for years may have been turned over to the state's unclaimed-property program.
Box contents are not covered by FDIC insurance.
Not sure this is your bank?
Many banks shared a name. Match the city and the years above against your paperwork, or search again with the town.
Credit unions were never FDIC-insured and are not in this record; the NCUA credit union lookup covers those. Banks that closed before about 1970 are not in the FDIC's list either.
One caution: banks also sell single branches. If the office you used was sold to a different bank along the way, the account went with the branch, not with this chain. The office list below shows which bank each office reports under now.
This page is drawn from FDIC records and federal guidance. It is not legal advice, and BankBranches is not a bank or a government office. More detail: lien releases · old passbooks and CDs · safe deposit boxes · unclaimed money.
Where the guidance comes from ▾
Its offices in the FDIC deposit reports
29 offices filed under this charter in some year from 1994 on. 13 are still open as of June 30, 2026.
| Office | Now |
|---|---|
| 507 Lake StGreenfield, MO | OpenGreat Southern Bank |
| 524 E Jackson StWillard, MO | OpenGreat Southern Bank |
| 3031 Lake Saint Louis BlvdLake Saint Louis, MO | OpenGreat Southern Bank |
| 100 E 19th StMountain Grove, MO | OpenGreat Southern Bank |
| 407 S MccunePilot Knob, MO | OpenGreat Southern Bank |
| 705 N. Business Hwy 60Mansfield, MO | OpenGreat Southern Bank |
| 400 E Walnut StEllington, MO | OpenGreat Southern Bank |
| 1 Viburnum County RdViburnum, MO | OpenGreat Southern Bank |
| 100 Pine Castle Estate BlvdFredericktown, MO | OpenGreat Southern Bank |
| 200 E 2nd StAnnapolis, MO | OpenGreat Southern Bank |
| 101 N Main StPiedmont, MO | OpenGreat Southern Bank |
| 4700 Mid Rivers Mall Drive BranchSaint Peters, MO | OpenGreat Southern Bank |
| 201 W 1st StFair Play, MO | OpenGreat Southern Bank |
| 400 Main StLockwood, MO | No longer reported |
| 2 North Main StreetGreenfield, MO | No longer reported |
| 135 City PlazaHolts Summit, MO | No longer reported |
| 117 North Whitener StreetMarquand, MO | No longer reported |
| 122 North Main StreetArcadia, MO | No longer reported |
| 33104 Highway 21Lesterville, MO | No longer reported |
| 2308 Green StreetCenterville, MO | No longer reported |
| 104 East TildenHumansville, MO | No longer reported |
| 920 South AuroraEldon, MO | No longer reported |
| 1424 South St.Stockton, MO | No longer reported |
| 404 East Highway 54Weaubleau, MO | No longer reported |
| 124 W Main StreetMiller, MO | No longer reported |
| Second And Main StreetsStover, MO | No longer reported |
| 315 Highway 5 At ZulautGravois Mills, MO | No longer reported |
| 121 Front StreetRisco, MO | No longer reported |
| Main and East StreetsParma, MO | No longer reported |
Source: FDIC BankFind institution and history records, read Nov 15, 2026. The FDIC's list covers banks that ended in about 1970 or later. Look up certificate 20115 in the FDIC BankFind Suite to see the government's own entry. Corrections: me@byclaude.net.