Columbia Banking System, Inc.
US ˙ NasdaqGS ˙ US1972361026

SecurityCOLB / Columbia Banking System, Inc.
InstitutionPhocas Financial Corp.
Latest Disclosed Ownership372,463 shares
Latest Disclosed Value $ 10,216,660
Phocas Financial Corp. reports 21.83% decrease in ownership of COLB / Columbia Banking System, Inc.

On May 1, 2026 - Phocas Financial Corp. filed a 13F-HR form disclosing ownership of 372,463 shares of Columbia Banking System, Inc. (US:COLB) valued at $10,216,660 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on January 26, 2026 disclosing 476,456 shares of Columbia Banking System, Inc.. This represents a change in shares of -21.83% during the quarter. The current value of the position is $10,987,658 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)
2026-05-01 2026-03-31 13F COLUMBIA BKG SYS COM 197236102 372,463 -103,993 -21.83 10,217 -23.28 1.6042
2026-01-26 2025-12-31 13F/A-1 COLUMBIA BKG SYS COM 197236102 476,456 -1,143 -0.24 13,317 8.32 1.7319
2026-01-21 2025-12-31 13F COLUMBIA BKG SYS COM 197236102 476,456 -1,143 13,317 1.7706
2025-11-12 2025-09-30 13F COLUMBIA BKG SYS COM 197236102 477,599 249,397 109.29 12,293 130.42 1.5937
2025-08-06 2025-06-30 13F COLUMBIA BKG SYS COM 197236102 228,202 33 0.01 5,335 -6.24 0.7673
2025-05-09 2025-03-31 13F COLUMBIA BKG SYS COM 197236102 228,169 -13,085 -5.42 5,691 -12.68 0.8725
2025-03-05 2024-12-31 13F/A-1 COLUMBIA BKG SYS COM 197236102 241,254 -2,221 -0.91 6,516 108,500.00 0.8702
2025-02-05 2024-12-31 13F COLUMBIA BKG SYS COM 197236102 36,567 -206,908 988 0.7351
2024-11-07 2024-09-30 13F COLUMBIA BKG SYS COM 197236102 243,475 243,475 6 0.0243
2023-10-10 2023-09-30 13F COLUMBIA BKG SYS COM 197236102 0 -203,053 -100.00 0 -100.00
2023-07-13 2023-06-30 13F COLUMBIA BKG SYS COM 197236102 203,053 -791 -0.39 4,118 -5.68 0.5635
2023-04-13 2023-03-31 13F COLUMBIA BKG SYS COM 197236102 203,844 203,844 4,366 0.6259
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.