Columbia Banking System, Inc. (COLB) Institutional Ownership & Insider Trading

553 institutions reported holding Columbia Banking System, Inc. shares in 13F filings for the quarter ended 2026-06-30, according to EquiReason's reading of their SEC filings. 8 insider trades on Form 4 since 2025-10-01.

Source: SEC EDGAR filings · figures as of 2026-06-30 · read by EquiReason

COLBColumbia Banking System, Inc.Follow COLB — free

Banks - Regional · Financials

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Market cap: 8.7B
P/E TTM: 12.4
Dividend yield: 4.8%
52-week: —
Next earnings: 20 Jan, in 88 days

Institutions · all 13F filers

quarter to 30 Jun 2026 · filers in both quarters

553 institutions held 95.3% of the shares. Across filers that reported both quarters, shares held changed -3.6%.

Largest moves, shares (millions)

Institutional flow by quarter

net shares added or trimmed, millions · filers in both quarters

Quarter	Holders	Shares held, M	Change	Increased	New	Decreased	Closed
Jun 26	553	270	-3.6%	157	68	188	34
Mar 26	520	277	-4.9%	171	51	147	33
Dec 25	494	293	-2.7%	129	51	151	35
Sep 25	460	293	+41.0%	224	89	68	32
Jun 25	406	209	+4.9%	148	53	108	35
Mar 25	391	195	+1.9%	136	36	103	38
Dec 24	390	193	-1.2%	110	28	114	29
Sep 24	366	192	-1.7%	114	50	110	42

Columbia Banking System, Inc. — questions

Who owns Columbia Banking System, Inc. stock?: 553 institutions reported Columbia Banking System, Inc. shares in 13F filings for the quarter ended 2026-06-30. The largest: BlackRock, Inc. (9.7%), T. Rowe Price Investment Management, Inc. (5.5%), DIMENSIONAL FUND ADVISORS LP (4.9%).
Are Columbia Banking System, Inc. insiders buying or selling?: 8 insider trades on Form 4 since 2025-10-01; the full list, with dates, people and plan status, is on this page.

Every figure on this page comes from Columbia Banking System, Inc.'s own SEC filings — see them on SEC EDGAR. Price data is licensed and shown only inside the product.

How these figures are read: methodology · EquiReason.

Important information. Figures on this page are taken from filings submitted to the U.S. Securities and Exchange Commission (SEC) and processed automatically by EquiReason. They may contain errors, omissions or delays, and EquiReason makes no representation or warranty as to their accuracy, completeness or timeliness. Always verify figures against the original filing on SEC EDGAR before relying on them.

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