Columbia Banking System, Inc.
US ˙ NasdaqGS ˙ US1972361026

SecurityCOLB / Columbia Banking System, Inc.
InstitutionPrudential Financial Inc
Latest Disclosed Ownership17,188 shares
Latest Disclosed Value $ 471,467
Prudential Financial Inc reports 86.27% decrease in ownership of COLB / Columbia Banking System, Inc.

On May 13, 2026 - Prudential Financial Inc filed a 13F-HR form disclosing ownership of 17,188 shares of Columbia Banking System, Inc. (US:COLB) valued at $471,467 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 125,154 shares of Columbia Banking System, Inc.. This represents a change in shares of -86.27% during the quarter. The current value of the position is $507,046 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)
2026-05-13 2026-03-31 13F COLUMBIA BKG SYS COM 197236102 17,188 -107,966 -86.27 471 -86.68 0.0003
2026-02-13 2025-12-31 13F COLUMBIA BKG SYS COM 197236102 125,154 -284,051 -69.42 3,536 -66.44 0.0043
2025-11-13 2025-09-30 13F COLUMBIA BKG SYS COM 197236102 409,205 -357,909 -46.66 10,533 -41.28 0.0125
2025-08-12 2025-06-30 13F COLUMBIA BKG SYS COM 197236102 767,114 726,163 1,773.25 17,935 1,656.61 0.0232
2025-05-13 2025-03-31 13F COLUMBIA BKG SYS COM 197236102 40,951 17,027 71.17 1,021 58.05 0.0015
2025-02-11 2024-12-31 13F COLUMBIA BKG SYS COM 197236102 23,924 -3,582 -13.02 646 -10.03 0.0009
2024-11-14 2024-09-30 13F COLUMBIA BKG SYS COM 197236102 27,506 303 1.11 718 32.72 0.0010
2024-08-13 2024-06-30 13F COLUMBIA BKG SYS COM 197236102 27,203 -298 -1.08 541 1.69 0.0008
2024-05-14 2024-03-31 13F COLUMBIA BKG SYS COM 197236102 27,501 -1,119 -3.91 532 -30.28 0.0007
2024-02-13 2023-12-31 13F COLUMBIA BKG SYS COM 197236102 28,620 10,854 61.09 764 111.94 0.0012
2023-11-13 2023-09-30 13F COLUMBIA BKG SYS COM 197236102 17,766 -660 -3.58 361 -3.49 0.0006
2023-08-11 2023-06-30 13F COLUMBIA BKG SYS COM 197236102 18,426 -111 -0.60 374 -6.05 0.0005
2023-05-12 2023-03-31 13F COLUMBIA BKG SYS COM 197236102 18,537 -130,587 -87.57 397 -91.16 0.0006
2023-02-14 2022-12-31 13F COLUMBIA BKG SYS COM 197236102 149,124 1,077 0.73 4,493 4.76 0.0076
2022-11-04 2022-09-30 13F COLUMBIA BKG SYS COM 197236102 148,047 -5,659 -3.68 4,289 -2.59 0.0073
2022-08-15 2022-06-30 13F COLUMBIA BKG SYS COM 197236102 153,706 -23,337 -13.18 4,403 -22.94 0.0070
2022-05-13 2022-03-31 13F COLUMBIA BKG SYS COM 197236102 177,043 40,069 29.25 5,714 17.16 0.0076
2022-02-14 2021-12-31 13F COLUMBIA BKG SYS COM 197236102 136,974 31,593 29.98 4,877 35.47 0.0061
2021-11-15 2021-09-30 13F COLUMBIA BKG SYS COM 197236102 105,381 5,742 5.76 3,600 -6.30 0.0050
2021-08-16 2021-06-30 13F COLUMBIA BKG SYS COM 197236102 99,639 11,067 12.49 3,842 0.65 0.0053
2021-05-12 2021-03-31 13F COLUMBIA BKG SYS COM 197236102 88,572 -6,397 -6.74 3,817 11.97 0.0057
2021-08-16 2020-12-31 13F/A-1 COLUMBIA BKG SYS COM 0035 197236102 94,969 93,693 7,342.71 3,409 11,263.33 0.0057
2021-02-16 2020-12-31 13F COLUMBIA BKG SYS COM 197236102 94,969 93,693 3,409 0.0057
2021-08-05 2020-09-30 13F/A-1 COLUMBIA BKG SYS COM 197236102 1,276 -736 -36.58 30 -47.37 0.0043
2020-11-16 2020-09-30 13F COLUMBIA BKG SYS COM 197236102 94,726 92,714 2,259 0.0043
2021-08-05 2020-06-30 13F/A-1 COLUMBIA BKG SYS COM 0028 197236102 2,012 389 23.97 57 29.55 0.0106
2020-08-12 2020-06-30 13F COLUMBIA BKG SYS COM 197236102 96,336 94,713 2,730 0.0053
2021-08-05 2020-03-31 13F/A-1 COLUMBIA BKG SYS COM 0026 197236102 1,623 230 16.51 44 -22.81 0.0114
2020-05-12 2020-03-31 13F COLUMBIA BKG SYS COM 197236102 112,575 111,182 3,017 0.0067
2021-08-05 2019-12-31 13F/A-1 COLUMBIA BKG SYS COM 0040 197236102 1,393 229 19.67 57 32.56 0.0149
2020-02-11 2019-12-31 13F COLUMBIA BKG SYS COM 197236102 113,755 112,591 4,628 0.0069
2021-08-05 2019-09-30 13F/A-1 COLUMBIA BKG SYS COM 0036 197236102 1,164 105 9.92 43 13.16 0.0140
2019-11-13 2019-09-30 13F COLUMBIA BKG SYS COM 197236102 115,725 114,666 4,270 0.0068
2021-08-05 2019-06-30 13F/A-1 COLUMBIA BKG SYS COM 197236102 1,059 161 17.93 38 31.03 0.0132
2019-08-08 2019-06-30 13F COLUMBIA BKG SYS COM 197236102 118,865 117,967 4,301 0.0067
2021-08-05 2019-03-31 13F/A-1 COLUMBIA BKG SYS COM 197236102 898 437 94.79 29 70.59 0.0123
2019-05-15 2019-03-31 13F COLUMBIA BKG SYS COM 197236102 135,625 135,164 4,434 0.0074
2021-08-05 2018-12-31 13F/A-1 COLUMBIA BKG SYS COM 197236102 461 377 448.81 17 466.67 0.0138
2019-02-07 2018-12-31 13F COLUMBIA BKG SYS COM 197236102 119,745 -2,910 4,346 0.0076
2021-09-01 2018-09-30 13F/A-1 COLUMBIA BKG SYS COM 0038 197236102 84 43 104.88 3 50.00 0.0048
2018-11-07 2018-09-30 13F COLUMBIA BKG SYS COM 197236102 122,655 122,614 4,755 0.0070
2021-09-01 2018-06-30 13F/A-1 COLUMBIA BKG SYS COM 197236102 41 -4 -8.89 2 0.00 0.0072
2018-08-13 2018-06-30 13F COLUMBIA BKG SYS COM 197236102 124,055 124,010 5,074 0.0076
2021-09-01 2018-03-31 13F/A-1 COLUMBIA BKG SYS COM 197236102 45 -121,690 -99.96 2 -99.96 0.0261
2018-05-04 2018-03-31 13F COLUMBIA BKG SYS COM 197236102 124,085 2,350 5,205 0.0079
2018-02-13 2017-12-31 13F COLUMBIA BKG SYS COM 197236102 121,735 23,499 23.92 5,288 27.82 0.0072
2017-11-02 2017-09-30 13F COLUMBIA BKG SYS COM 197236102 98,236 -640 -0.65 4,137 5.00 0.0068
2017-08-07 2017-06-30 13F COLUMBIA BKG SYS COM 197236102 98,876 -34,840 -26.06 3,940 -24.42 0.0059
2017-05-10 2017-03-31 13F COLUMBIA BKG SYS COM 197236102 133,716 -8,250 -5.81 5,213 -17.81 0.0081
2017-02-07 2016-12-31 13F COLUMBIA BKG SYS COM 197236102 141,966 38,550 37.28 6,343 87.44 0.0102
2016-11-04 2016-09-30 13F COLUMBIA BKG SYS COM 197236102 103,416 -36,810 -26.25 3,384 -14.00 0.0056
2016-08-09 2016-06-30 13F COLUMBIA BKG SYS COM 197236102 140,226 8,660 6.58 3,935 -0.03 0.0066
2016-05-09 2016-03-31 13F COLUMBIA BKG SYS COM 197236102 131,566 0 0.00 3,936 -7.97 0.0070
2016-02-12 2015-12-31 13F COLUMBIA BKG SYS COM 197236102 131,566 -300 -0.23 4,277 3.91 0.0077
2015-11-10 2015-09-30 13F COLUMBIA BKG SYS COM 197236102 131,866 10,000 8.21 4,116 3.78 0.0081
2015-08-06 2015-06-30 13F COLUMBIA BKG SYS COM 197236102 121,866 1,800 1.50 3,966 14.03 0.0070
2015-05-01 2015-03-31 13F COLUMBIA BKG SYS COM 197236102 120,066 1,300 1.09 3,478 6.07 0.0060
2015-02-06 2014-12-31 13F COLUMBIA BKG SYS COM 197236102 118,766 2,200 1.89 3,279 13.38 0.0059
2014-11-12 2014-09-30 13F COLUMBIA BKG SYS COM 197236102 116,566 -7,301 -5.89 2,892 -11.26 0.0054
2014-08-13 2014-06-30 13F COLUMBIA BKG SYS COM 197236102 123,867 7,101 6.08 3,259 -2.13 0.0057
2014-05-14 2014-03-31 13F COLUMBIA BKG SYS COM 197236102 116,766 900 0.78 3,330 4.49 0.0062
2014-02-11 2013-12-31 13F COLUMBIA BKG SYS COM 197236102 115,866 -770 -0.66 3,187 10.62 0.0063
2013-11-07 2013-09-30 13F COLUMBIA BKG SYS COM 197236102 116,636 -1,400 -1.19 2,881 2.53 0.0061
2013-08-07 2013-06-30 13F COLUMBIA BKG SYS COM 197236102 118,036 118,036 2,810 0.0062
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.