Company · COLB · CIK 887343

Columbia Banking System, Inc. (COLB) SEC filings and CIK.

COLB’s SEC Central Index Key (CIK) is 0000887343, or 887343 without leading zeros. The SEC’s ticker file lists it as COLUMBIA BANKING SYSTEM, INC..

Ticker: COLB
CIK: 0000887343
Other tickers: None
Insider transactions, Q3 2026: 5

Insider trading

In Q3 2026, insiders at Columbia Banking System, Inc. reported 5 non-derivative transactions on 6 Forms 3, 4 and 5, including 1 open-market purchases and 0 sales. See every COLB insider transaction →

Recent filings we observed

From our record of EDGAR’s latest-filings feed and sampled daily indexes. Not a complete filing history; use the filings API for that.
Filed	Form	Accession
2026-10-30	4	0000887343-26-000185

Get COLB SEC data through the API

Filing history

curl "https://sec-api.dev/api/v1/filings?cik=887343&limit=10" \
  -H "Authorization: Bearer $SEC_API_KEY"

Company profile

curl "https://sec-api.dev/api/v1/companies/887343" \
  -H "Authorization: Bearer $SEC_API_KEY"

Reported XBRL facts

curl "https://sec-api.dev/api/v1/facts/887343?taxonomy=us-gaap&concept=Revenues&limit=10" \
  -H "Authorization: Bearer $SEC_API_KEY"

Ticker to CIK API · SEC filings API · Columbia Banking System, Inc. on SEC.gov

Questions

What is COLB’s CIK number?

COLB’s SEC Central Index Key (CIK) is 0000887343, or 887343 without leading zeros. The SEC’s ticker file lists it as COLUMBIA BANKING SYSTEM, INC..

How do I find Columbia Banking System, Inc.’s 10-K?

Request /api/v1/filings?cik=887343&form=10-K, or open the company’s EDGAR page and filter by 10-K. Foreign issuers file 20-F or 40-F instead.

Ticker and CIK: SEC company_tickers.json, cached 2026-11-02. Tickers can move between entities; the CIK identifies the filer.

Plain-text version for agents and LLMs: /companies/colb.md

Independent. Not affiliated with, endorsed by, or sponsored by the U.S. Securities and Exchange Commission. Data is reproduced from public SEC filings and datasets. Not investment advice.