Bank Branches › Closed and merged banks › New York › Extebank
What happened to Extebank?
Extebank in Stony Brook, NY (earlier called Bank of Suffolk County) merged into North Fork Bank of Mattituck, NY on Mar 15, 1996. After 1 more change of hands, what was Extebank is today part of Capital One, National Association (Mclean, VA).
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.
- 1907Bank of Suffolk County opens in Stony Brook, NY
- Jul 1, 1980renamed Extebank
- Mar 15, 1996MERGEDExtebank merged into North Fork Bank of Mattituck, NY.FDIC certificate 667 ends; its business continues under certificate 15985.
- Aug 1, 2007MERGEDNorth Fork Bank of Mattituck, NY merged into Capital One, National Association of Mclean, VA.FDIC certificate 15985 ends; its business continues under certificate 4297.
- TodayOPEN
Capital One, National AssociationMain office Mclean, VA · FDIC certificate 4297 · 245 offices in 9 states on June 30, 2026Every Capital One, National Association office → Website on file with the FDIC: www.capitalone.com
If you still have something from Extebank
A lien that was never released
If a paid-off mortgage, home-equity line or car loan still shows Extebank as lienholder, start with Capital One, National Association. 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 Capital One, National Association to search for the account under the name Extebank. 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 Capital One, National Association which branch now holds boxes from the Extebank 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
9 offices filed under this charter in some year from 1994 on. None is still reporting as of June 30, 2026.
| Office | Now |
|---|---|
| 1001 Avenue Of The AmericasNew York City, NY | No longer reported |
| 645 Fifth AvenueNew York City, NY | No longer reported |
| 4110 Veterans Memorial HighwayBohemia, NY | No longer reported |
| 99 Smithtown-By-PassHauppauge, NY | No longer reported |
| 64 Main StreetStony Brook, NY | No longer reported |
| 487 Lake AvenueSt. James, NY | No longer reported |
| 1500 William Floyd ParkwayYaphank, NY | No longer reported |
| 999 Walt Whitman RoadMelville, NY | No longer reported |
| 2 Jericho PlazaJericho, NY | No longer reported |
Banks folded into Extebank
1 bank merged directly into this charter.
| Bank | Ended |
|---|---|
| Century National Bank and Trust CompanyNew York City, NY | Jul 1, 1980 |
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 667 in the FDIC BankFind Suite to see the government's own entry. Corrections: me@byclaude.net.