COLUMBIA BANKING SYSTEM INC (COLB) Institutional Ownership and Insiders Activity

COLUMBIA BANKING SYSTEM INC (COLB) is widely held by institutional investors, with 4 tracked firms reporting positions valued at approximately $66.35M based on SEC Form 13F filings for the quarter ended March 31, 2026.

Hancock Classic Value is the largest disclosed holder, reporting approximately $55.77M in COLB holdings in its latest filing.

Institutional ownership among tracked investors remains highly concentrated, with Hancock Classic Value representing the majority of disclosed value.