Columbia Banking System, Inc.
US ˙ NasdaqGS ˙ US1972361026

SecurityCOLB / Columbia Banking System, Inc.
InstitutionCeredex Value Advisors LLC
Latest Disclosed Ownership516,800 shares
Latest Disclosed Value $ 14,175,825
Ceredex Value Advisors LLC reports 16.25% decrease in ownership of COLB / Columbia Banking System, Inc.

On May 14, 2026 - Ceredex Value Advisors LLC filed a 13F-HR form disclosing ownership of 516,800 shares of Columbia Banking System, Inc. (US:COLB) valued at $14,175,824 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 617,100 shares of Columbia Banking System, Inc.. This represents a change in shares of -16.25% during the quarter. The current value of the position is $15,245,600 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-14 2026-03-31 13F COLUMBIA BKG SYS COM 197236102 516,800 -100,300 -16.25 14,176 -17.81 0.2315
2026-02-13 2025-12-31 13F COLUMBIA BKG SYS COM 197236102 617,100 21,000 3.52 17,248 12.41 0.5185
2025-11-14 2025-09-30 13F/A-1 COLUMBIA BKG SYS COM 197236102 596,100 -8,100 -1.34 15,344 8.62 0.3558
2025-11-13 2025-09-30 13F COLUMBIA BKG SYS COM 197236102 596,100 -8,100 15,344 0.1655
2025-08-13 2025-06-30 13F COLUMBIA BKG SYS COM 197236102 604,200 122,638 25.47 14,126 17.62 0.3034
2025-05-14 2025-03-31 13F COLUMBIA BKG SYS COM 197236102 481,562 6,900 1.45 12,010 -6.32 0.2627
2025-02-13 2024-12-31 13F COLUMBIA BKG SYS COM 197236102 474,662 30,500 6.87 12,821 10.55 0.2587
2024-10-29 2024-09-30 13F COLUMBIA BKG SYS COM 197236102 444,162 -28,900 -6.11 11,597 23.25 0.2263
2024-07-25 2024-06-30 13F COLUMBIA BKG SYS COM 197236102 473,062 -6,000 -1.25 9,409 1.51 0.1778
2024-04-30 2024-03-31 13F COLUMBIA BKG SYS COM 197236102 479,062 -124,599 -20.64 9,270 -42.45 0.1621
2024-01-25 2023-12-31 13F COLUMBIA BKG SYS COM 197236102 603,661 -127,039 -17.39 16,106 8.58 0.2792
2023-10-24 2023-09-30 13F COLUMBIA BKG SYS COM 197236102 730,700 52,300 7.71 14,833 7.82 0.2616
2023-07-25 2023-06-30 13F COLUMBIA BKG SYS COM 197236102 678,400 130,700 23.86 13,758 17.27 0.2216
2023-04-26 2023-03-31 13F COLUMBIA BKG SYS COM 197236102 547,700 547,700 11,732 0.1826
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.