# SONOMA VALLEY BANK

> **Failed bank** · SONOMA, CA · failed 2010-08-20 · State commercial bank, non-Federal Reserve member (FDIC-supervised) · FDIC cost $10M

## What happened

SONOMA VALLEY BANK of SONOMA, CA was closed by regulators on **2010-08-20**. The FDIC was named receiver.

**Resolution:** Purchase & Assumption — acquiring bank assumed deposits + bought assets

Deposits were transferred to **WESTAMERICA BANK** (SAN RAFAEL, CA). Customers became depositors of the acquiring bank automatically.


## Key facts

- **FDIC ID:** 3847
- **FDIC Certificate:** 27259
- **FDIC FIN:** 10285
- **Bank name:** SONOMA VALLEY BANK
- **Location:** SONOMA, CA
- **Failure date:** 2010-08-20
- **FDIC resolution date:** 2010-08-20
- **Charter type:** State commercial bank, non-Federal Reserve member (FDIC-supervised)
- **Resolution type:** Purchase & Assumption — acquiring bank assumed deposits + bought assets
- **Estimated FDIC DIF cost:** $10M
- **Deposits at failure:** $256M
- **Assets at failure:** $337M
- **Acquiring bank:** WESTAMERICA BANK (SAN RAFAEL, CA)

## Other banks WESTAMERICA BANK has acquired in FDIC resolutions

- COUNTY BANK (MERCED, CA) — failed 2009-02-06 — /failed-bank/3600

## Primary source

FDIC BankFind failed-bank search: https://banks.data.fdic.gov/explore/failures?searchName=SONOMA%20VALLEY%20BANK

## Citation

> US Federal Deposit Insurance Corporation, BankFind failed-bank database, SONOMA VALLEY BANK (FDIC ID 3847), failed 2010-08-20. Retrieved via AI Analytics 2026-06-25 from https://api.ai-analytics.org/failed-bank/3847.

---

*[FDIC failures dataset](/datasets/fdic-failures) · CC0 1.0*