Columbia Banking System, Inc. (COLB) Ownership
COLB ownership summary
as of October 17, 2026- Institutions
- 97.1% of shares outstanding
- Insiders
- 0.75% of shares outstanding
- Shares outstanding
- 282.9M
- Float
- 280.3M shares available to trade
- Short interest
- 3.93% 11.1M shares short
- Days to cover
- 3.76 short interest up 4.7% vs prior month
- Institutions 97.12%
- Insiders 0.75%
- Other investors 2.13%
COLB top institutional holders
1 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Financial Gravity Companies Inc | 0.00% | — | — | −16 (−100.0%) | September 30, 2024 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 1, 0 holders added 0 shares and 1 cut 16.
COLB top mutual fund and ETF holders
1 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Keeley Teton Small Cap Opportunities | 0.01% | 21K | $589,789 | — | March 31, 2024 |
Funds report holdings monthly or quarterly; dates differ by fund.
COLB insider transactions
latest 6| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2026-03-13 | Brock Lakely | Sell | $26.23 | 211 | $5,535 |
| 2026-03-13 | Kumi Yamamoto Baruffi | Sell | $26.23 | 937 | $24,578 |
| 2026-03-05 | Josh Gottheimer | Sell | $28.00 | — | — |
| 2026-03-04 | Torran B Nixon | Sell | $28.85 | 2,240 | $64,624 |
| 2026-03-03 | Torran B Nixon | Sell | $28.25 | 2,241 | $63,308 |
| 2026-01-30 | Steven R Gardner | Sell | $29.43 | 13,725 | $403,927 |
Reported trades by company officers, directors and other filers (including disclosures by members of Congress where EODHD lists them). "—" where the filing gives no share count.
COLB shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns COLB
Institutional investors own 97.1% of Columbia Banking System's shares and insiders 0.75%. The largest holder is Financial Gravity Companies Inc with 0.00% of the shares (0), as of September 30, 2024. Among the top 1 institutions, 0 added shares and 1 reduced their stake in the latest filings. Short interest is 3.93% of the float, or 3.76 days of average trading volume. The share count rose 34.9% since 2014.
Related: COLB analyst forecast, COLB key metrics, COLB dividend history. See the COLB stock overview for the latest quote and news.
COLB ownership FAQ
Who owns the most Columbia Banking System stock?
The largest shareholders of Columbia Banking System are Financial Gravity Companies Inc (0.00%).
What percentage of Columbia Banking System is owned by institutions?
Institutions hold 97.1% of Columbia Banking System's shares outstanding; insiders hold 0.75%.
Which funds own Columbia Banking System?
The largest fund holders of Columbia Banking System are Keeley Teton Small Cap Opportunities (0.01%).
What is Columbia Banking System's short interest?
11.1M shares of Columbia Banking System were sold short, 3.93% of the float; at the average daily volume it would take 3.76 days to cover.
Are insiders buying or selling Columbia Banking System?
Of the latest 6 reported insider transactions in Columbia Banking System (since January 30, 2026), 0 were purchases and 6 were sales.
How many shares of Columbia Banking System are outstanding?
Columbia Banking System has 282.9M shares outstanding, of which 280.3M are in the public float.