NASDAQ:COLB | Historical Stock Price | COLUMBIA BANKING SYSTEM, INC.

Complete retained daily price history on its own workbook tab. Split-adjusted close keeps every historical share price on one comparable split basis. Cumulative dividend-reinvested close is the daily close of a rebased total-return index: it starts with one share at the earliest retained close, reinvests every distribution, and normalizes every forward and reverse split exactly once. Admitted exchange opening prices remain a distinct current-session series.

Available history
1992-06-16 to 2026-09-04
Data captured

Stock Price Chart

Blue: Split-adjusted close · Orange: Cumulative dividend-reinvested close

$3.43$6.37$11.80$21.86$40.52$75.091992-06-162026-08-27

Logarithmic scale. Both lines share the same starting value for the selected range.

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Historical Stock Price — 1999

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
1999-12-31$9.84$9.8426,814
1999-12-30$10.12$10.1225,480
1999-12-29$10.21$10.2192,048
1999-12-28$10.31$10.3177,774
1999-12-27$10.31$10.3175,239
1999-12-23$10.31$10.31169,421
1999-12-22$10.45$10.4542,155
1999-12-21$10.49$10.49269,206
1999-12-20$10.87$10.8769,369
1999-12-17$10.73$10.7344,156
1999-12-16$10.78$10.7833,617
1999-12-15$10.87$10.8731,883
1999-12-14$11.10$11.1013,607
1999-12-13$11.06$11.0652,561
1999-12-10$11.15$11.1520,277
1999-12-09$11.06$11.0640,421
1999-12-08$11.67$11.6728,682
1999-12-07$12.13$12.1324,679
1999-12-06$12.13$12.1347,358
1999-12-03$11.99$11.9933,884
1999-12-02$11.81$11.8141,622
1999-12-01$11.90$11.9026,147
1999-11-30$12.27$12.2791,914
1999-11-29$11.99$11.99142,074
1999-11-26$10.68$10.682,001
1999-11-24$10.78$10.7831,350
1999-11-23$10.49$10.4922,945
1999-11-22$10.68$10.6847,625
1999-11-19$10.73$10.7345,624
1999-11-18$10.64$10.6433,484
1999-11-17$10.40$10.4048,559
1999-11-16$10.31$10.3146,157
1999-11-15$10.26$10.2644,290
1999-11-12$10.17$10.1714,541
1999-11-11$10.31$10.3116,008
1999-11-10$10.21$10.2144,023
1999-11-09$10.21$10.2114,141
1999-11-08$10.12$10.1220,544
1999-11-05$10.03$10.0318,543
1999-11-04$10.12$10.1240,421
1999-11-03$10.17$10.1787,112
1999-11-02$10.17$10.1714,674
1999-11-01$10.21$10.2142,155
1999-10-29$9.84$9.8418,676
1999-10-28$10.12$10.1239,087
1999-10-27$10.31$10.312,935
1999-10-26$10.31$10.3137,086
1999-10-25$10.31$10.3121,611
1999-10-22$10.49$10.49131,135
1999-10-21$9.74$9.7438,687
1999-10-20$9.74$9.7448,292
1999-10-19$9.46$9.4640,688
1999-10-18$9.18$9.182,801
1999-10-15$9.00$9.0015,208
1999-10-14$9.46$9.4630,683
1999-10-13$9.09$9.0925,747
1999-10-12$9.14$9.14109,657
1999-10-11$9.04$9.0427,214
1999-10-08$9.00$9.0029,349
1999-10-07$9.04$9.0430,149
1999-10-06$9.04$9.0453,895
1999-10-05$9.00$9.0091,247
1999-10-04$9.28$9.2819,477
1999-10-01$9.74$9.746,804
1999-09-30$9.84$9.8426,414
1999-09-29$9.56$9.5616,542
1999-09-28$9.60$9.6042,822
1999-09-27$9.37$9.3715,208
1999-09-24$9.60$9.6057,230
1999-09-23$9.70$9.7060,832
1999-09-22$9.60$9.6034,818
1999-09-21$10.03$10.0316,809
1999-09-20$10.31$10.312,001
1999-09-17$9.79$9.7915,208
1999-09-16$10.17$10.1738,153
1999-09-15$10.31$10.31141,540
1999-09-14$9.98$9.9825,480
1999-09-13$10.31$10.3155,762
1999-09-10$10.31$10.3146,824
1999-09-09$10.40$10.4025,213
1999-09-08$10.54$10.5420,010
1999-09-07$10.64$10.6415,475
1999-09-03$10.78$10.7825,613
1999-09-02$10.68$10.6817,342
1999-09-01$10.92$10.9264,033
1999-08-31$10.82$10.8228,148
1999-08-30$10.87$10.8722,011
1999-08-27$10.87$10.8721,078
1999-08-26$10.68$10.6813,207
1999-08-25$10.87$10.8714,808
1999-08-24$10.92$10.9225,213
1999-08-23$11.06$11.068,671
1999-08-20$10.78$10.789,071
1999-08-19$10.73$10.7322,545
1999-08-18$10.96$10.961,067
1999-08-17$10.73$10.7320,010
1999-08-16$10.82$10.8224,146
1999-08-13$10.82$10.8221,745
1999-08-12$10.54$10.5423,479
1999-08-11$10.82$10.8213,874
1999-08-10$10.78$10.7827,214
1999-08-09$10.73$10.739,872
1999-08-06$10.87$10.8724,012
1999-08-05$10.82$10.8221,745
1999-08-04$10.96$10.9674,172
1999-08-03$10.82$10.8222,412
1999-08-02$10.92$10.924,269
1999-07-30$10.92$10.9214,407
1999-07-29$10.82$10.8213,607
1999-07-28$10.92$10.9232,817
1999-07-27$10.73$10.7331,483
1999-07-26$10.82$10.8228,148
1999-07-23$10.59$10.5922,145
1999-07-22$10.68$10.6834,551
1999-07-21$10.59$10.596,003
1999-07-20$10.40$10.4032,550
1999-07-19$10.40$10.4042,956
1999-07-16$10.49$10.4956,029
1999-07-15$10.49$10.4920,544
1999-07-14$10.49$10.4919,077
1999-07-13$10.49$10.4936,952
1999-07-12$10.52$10.5241,755
1999-07-09$10.68$10.6822,011
1999-07-08$10.54$10.5435,485
1999-07-07$10.59$10.5945,223
1999-07-06$11.29$11.2927,348
1999-07-02$11.57$11.5718,009
1999-07-01$11.90$11.9061,899
1999-06-30$11.53$11.53195,835
1999-06-29$10.49$10.4934,818
1999-06-28$10.31$10.3114,941
1999-06-25$10.49$10.4918,543
1999-06-24$10.35$10.3535,752
1999-06-23$10.35$10.3549,092
1999-06-22$10.59$10.5916,675
1999-06-21$10.96$10.9628,281
1999-06-18$10.64$10.6422,145
1999-06-17$10.49$10.4916,809
1999-06-16$10.78$10.7830,282
1999-06-15$10.87$10.8711,606
1999-06-14$10.87$10.8734,418
1999-06-11$10.49$10.4966,835
1999-06-10$10.45$10.4577,774
1999-06-09$10.54$10.54120,996
1999-06-08$11.15$11.1559,498
1999-06-07$11.62$11.6226,280
1999-06-04$11.43$11.4371,637
1999-06-03$12.09$12.0945,624
1999-06-02$12.37$12.3738,687
1999-06-01$12.65$12.654,269
1999-05-28$12.32$12.3235,352
1999-05-27$12.51$12.5114,007
1999-05-26$12.84$12.849,205
1999-05-25$12.70$12.709,205
1999-05-24$12.74$12.7415,475
1999-05-21$12.39$12.3919,077
1999-05-20$12.27$12.2727,081
1999-05-19$12.37$12.3720,144
1999-05-18$11.81$11.8113,073
1999-05-17$11.81$11.815,470
1999-05-14$11.99$11.9925,747
1999-05-13$12.42$12.4220,944
1999-05-12$12.74$12.7424,679
1999-05-11$12.84$12.8442,956
1999-05-10$13.12$13.1229,215
1999-05-07$12.72$12.7240,761
1999-05-06$12.54$12.5417,369
1999-05-05$12.32$12.3214,848
1999-05-04$12.09$12.0918,630
1999-05-03$12.32$12.3217,789
1999-04-30$12.14$12.1444,403
1999-04-29$12.00$12.0019,750
1999-04-28$12.49$12.4939,220
1999-04-27$11.87$11.8724,092
1999-04-26$11.91$11.9132,777
1999-04-23$12.32$12.3230,956
1999-04-22$12.14$12.1418,630
1999-04-21$12.49$12.4934,178
1999-04-20$11.87$11.8776,480
1999-04-19$11.07$11.0755,889
1999-04-16$10.80$10.8044,543
1999-04-15$11.07$11.0726,754
1999-04-14$10.62$10.6250,846
1999-04-13$10.40$10.4051,547
1999-04-12$10.35$10.3545,103
1999-04-09$10.49$10.4938,380
1999-04-08$10.26$10.2640,621
1999-04-07$10.44$10.4457,990
1999-04-06$9.99$9.9981,662
1999-04-05$9.91$9.91116,680
1999-04-01$10.62$10.6235,158
1999-03-31$10.71$10.7163,033
1999-03-30$11.07$11.0737,399
1999-03-29$10.75$10.7532,497
1999-03-26$11.07$11.0766,675
1999-03-25$10.75$10.7548,325
1999-03-24$11.69$11.6913,027
1999-03-23$11.42$11.4234,738
1999-03-22$11.78$11.7821,011
1999-03-19$11.78$11.7819,750
1999-03-18$12.05$12.0518,770
1999-03-17$11.96$11.9626,054
1999-03-16$12.14$12.1423,672
1999-03-15$11.96$11.969,385
1999-03-12$12.14$12.1433,057
1999-03-11$12.18$12.1851,267
1999-03-10$12.00$12.0060,371
1999-03-09$11.96$11.9636,139
1999-03-08$12.40$12.4032,917
1999-03-05$13.52$13.5218,910
1999-03-04$12.85$12.8517,509
1999-03-03$12.49$12.4910,646
1999-03-02$12.54$12.5414,007
1999-03-01$12.14$12.1434,598
1999-02-26$12.23$12.2348,045
1999-02-25$12.32$12.3221,991
1999-02-24$12.23$12.2317,089
1999-02-23$11.82$11.8223,532
1999-02-22$11.78$11.7845,664
1999-02-19$12.05$12.0521,431
1999-02-18$12.14$12.1430,116
1999-02-17$11.78$11.7824,092
1999-02-16$12.09$12.0916,529
1999-02-12$12.32$12.3228,855
1999-02-11$11.96$11.9627,034
1999-02-10$11.96$11.9621,011
1999-02-09$11.96$11.9619,330
1999-02-08$11.69$11.6929,415
1999-02-05$11.96$11.9643,002
1999-02-04$11.91$11.9147,345
1999-02-03$12.05$12.059,105
1999-02-02$12.00$12.0026,474
1999-02-01$12.00$12.0013,587
1999-01-29$12.14$12.1427,314
1999-01-28$11.96$11.9639,080
1999-01-27$11.96$11.9614,708
1999-01-26$12.49$12.4913,727
1999-01-25$12.14$12.1443,563
1999-01-22$11.96$11.9635,158
1999-01-21$11.78$11.7813,307
1999-01-20$11.78$11.7842,582
1999-01-19$11.60$11.6027,874
1999-01-15$11.87$11.8746,644
1999-01-14$12.05$12.0516,809
1999-01-13$12.09$12.0938,380
1999-01-12$12.23$12.2327,174
1999-01-11$11.78$11.7846,924
1999-01-08$12.32$12.3229,275
1999-01-07$12.40$12.4031,376
1999-01-06$12.49$12.4920,451
1999-01-05$12.58$12.5819,890
1999-01-04$12.76$12.7644,263