Bank Branches › Closed and merged banks › Montana › First Security Bank
What happened to First Security Bank?
First Security Bank in Bozeman, MT (earlier called Security Bank & Trust Company of Bozeman and 1 other name) merged into Glacier Bank of Kalispell, MT on Feb 28, 2018. Glacier 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.
- 1919Security Bank & Trust Company of Bozeman opens in Bozeman, MT
- May 16, 1974renamed First Security Bank of Bozeman
- Dec 28, 1998renamed First Security Bank
- Feb 28, 2018MERGEDFirst Security Bank merged into Glacier Bank of Kalispell, MT.FDIC certificate 1520 ends; its business continues under certificate 30788.
- TodayOPEN
Glacier BankMain office Kalispell, MT · FDIC certificate 30788 · 252 offices in 9 states on June 30, 2026Every Glacier Bank office → Website on file with the FDIC: www.glacierbank.com
If you still have something from First Security Bank
A lien that was never released
If a paid-off mortgage, home-equity line or car loan still shows First Security Bank as lienholder, start with Glacier Bank. In a merger the surviving bank takes over the other bank's loans, so it is the bank to ask for a recordable lien release; if the loan was sold along the way, it can tell you to whom.
The FDIC says it cannot process lien releases for banks that merged or were acquired without government assistance, which is what the record shows here.
Record the release with the same county office that recorded the original mortgage or deed of trust.
An old account, passbook or CD
Ask Glacier Bank to search for the account under the name First Security Bank. A passbook or certificate shows an account existed. It doesn't show the money is still there, and the OCC notes that federal rules require banks to keep most account records for five years.
Accounts nobody touches are eventually turned over to a state. The OCC puts the usual wait at three to five years with no activity, set by each state's law. Search the unclaimed-property program of the state of the owner's last known address on the bank's records, and any other state they lived in. It is free to search and to claim through a state's own site, and MissingMoney.com, an official site of the state administrators' association, searches most states at once.
A safe deposit box
Ask Glacier Bank which branch now holds boxes from the First Security Bank office you used. The OCC says a box with no activity for three to five years (the period is set by state statute) is likely treated as dormant, and its contents may be 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
12 offices filed under this charter in some year from 1994 on. 10 are still open as of June 30, 2026.
| Office | Now |
|---|---|
| 208 E Main StBozeman, MT | OpenGlacier Bank |
| 670 S 19th AveBozeman, MT | OpenGlacier Bank |
| 511 W Main StBelgrade, MT | OpenGlacier Bank |
| 642 Cottonwood RdBozeman, MT | OpenGlacier Bank |
| 321 Central AveFairfield, MT | OpenGlacier Bank |
| 1502 Main StFort Benton, MT | OpenGlacier Bank |
| 201 Main Ave NChoteau, MT | OpenGlacier Bank |
| 106 S Electric StWest Yellowstone, MT | OpenGlacier Bank |
| 320 S Main StThree Forks, MT | OpenGlacier Bank |
| 390 Post AveVaughn, MT | OpenGlacier Bank |
| 78 Meadow Village DriveBig Sky, MT | No longer reported |
| 912 North Seventh AvenueBozeman, MT | No longer reported |
Banks folded into First Security Bank
5 banks merged directly into this charter; counting the banks those had absorbed earlier, 6 charters end up inside it.
| Bank | Ended |
|---|---|
| Teton BanksFairfield, MT | Oct 29, 2016 |
| First State Bank of Fort BentonFort Benton, MT | Oct 25, 2002 |
| 1st Security Bank of West Yellowstone, MontanaWest Yellowstone, MT | May 17, 2001 |
| Security Bank of Three ForksThree Forks, MT | Nov 6, 2000 |
| First Security Bank of BelgradeBelgrade, MT | Dec 28, 1998 |
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 1520 in the FDIC BankFind Suite to see the government's own entry. Corrections: me@byclaude.net.