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.

View year

Historical Stock Price — 2005

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2005-12-30$28.55$29.5753,200
2005-12-29$29.19$30.2318,500
2005-12-28$28.98$30.0127,800
2005-12-27$28.76$29.7915,700
2005-12-23$29.22$30.268,500
2005-12-22$29.70$30.7635,200
2005-12-21$29.38$30.43113,400
2005-12-20$29.17$30.2140,100
2005-12-19$29.14$30.1839,000
2005-12-16$29.58$30.64107,800
2005-12-15$29.50$30.5541,400
2005-12-14$29.50$30.5531,100
2005-12-13$29.41$30.4631,300
2005-12-12$29.47$30.5231,000
2005-12-09$29.33$30.3827,500
2005-12-08$29.40$30.4535,400
2005-12-07$29.00$30.0438,100
2005-12-06$29.14$30.1855,800
2005-12-05$29.00$30.0490,900
2005-12-02$28.77$29.8045,600
2005-12-01$28.80$29.8371,500
2005-11-30$28.85$29.8858,900
2005-11-29$28.99$30.0362,300
2005-11-28$28.92$29.9557,900
2005-11-25$29.10$30.146,700
2005-11-23$29.11$30.1517,100
2005-11-22$29.04$30.0878,300
2005-11-21$28.96$29.9936,100
2005-11-18$28.40$29.4150,900
2005-11-17$28.75$29.7845,100
2005-11-16$28.46$29.4853,200
2005-11-15$28.68$29.7070,000
2005-11-14$29.00$30.0440,400
2005-11-11$29.66$30.7292,400
2005-11-10$29.49$30.5479,300
2005-11-09$29.21$30.2558,200
2005-11-08$29.12$30.1625,300
2005-11-07$29.55$30.6147,500
2005-11-04$29.40$30.3357,700
2005-11-03$29.43$30.3662,400
2005-11-02$29.22$30.1483,900
2005-11-01$28.88$29.7932,400
2005-10-31$28.91$29.8291,900
2005-10-28$27.86$28.7449,700
2005-10-27$26.85$27.7054,300
2005-10-26$27.15$28.0051,300
2005-10-25$26.56$27.4025,800
2005-10-24$26.67$27.51183,600
2005-10-21$25.63$26.4432,600
2005-10-20$24.94$25.7337,900
2005-10-19$25.22$26.0180,900
2005-10-18$24.95$25.7450,100
2005-10-17$25.43$26.2334,300
2005-10-14$25.41$26.2162,200
2005-10-13$25.74$26.5529,800
2005-10-12$25.86$26.6768,100
2005-10-11$25.40$26.20117,000
2005-10-10$25.00$25.7915,900
2005-10-07$25.73$26.546,500
2005-10-06$25.53$26.3325,600
2005-10-05$26.46$27.29107,400
2005-10-04$26.24$27.07130,100
2005-10-03$26.50$27.3319,100
2005-09-30$26.23$27.0621,100
2005-09-29$26.10$26.9255,100
2005-09-28$25.89$26.7183,500
2005-09-27$26.18$27.00112,700
2005-09-26$26.15$26.9719,800
2005-09-23$25.65$26.4613,000
2005-09-22$24.93$25.7118,100
2005-09-21$24.61$25.3845,800
2005-09-20$24.78$25.5659,300
2005-09-19$25.31$26.1123,500
2005-09-16$25.75$26.5681,600
2005-09-15$24.89$25.6716,000
2005-09-14$24.99$25.7828,500
2005-09-13$25.11$25.9012,000
2005-09-12$25.75$26.5613,300
2005-09-09$25.70$26.5117,100
2005-09-08$25.60$26.4115,800
2005-09-07$26.11$26.9314,600
2005-09-06$25.96$26.7830,100
2005-09-02$25.84$26.657,200
2005-09-01$25.94$26.7623,800
2005-08-31$26.38$27.2121,900
2005-08-30$25.48$26.2813,600
2005-08-29$25.55$26.3528,400
2005-08-26$25.59$26.4044,300
2005-08-25$25.62$26.4337,500
2005-08-24$25.59$26.4047,700
2005-08-23$25.50$26.3020,300
2005-08-22$25.62$26.4328,200
2005-08-19$25.52$26.3218,800
2005-08-18$25.63$26.4455,100
2005-08-17$25.66$26.4722,600
2005-08-16$25.99$26.8162,900
2005-08-15$26.00$26.8271,400
2005-08-12$25.60$26.4148,200
2005-08-11$25.45$26.2523,300
2005-08-10$25.77$26.58114,600
2005-08-09$25.60$26.4179,600
2005-08-08$24.96$25.7572,800
2005-08-05$24.26$24.91219,300
2005-08-04$25.41$26.0975,000
2005-08-03$26.25$26.9519,300
2005-08-02$26.41$27.1226,500
2005-08-01$26.43$27.1468,400
2005-07-29$27.68$28.42166,700
2005-07-28$28.79$29.5657,600
2005-07-27$27.85$28.6024,500
2005-07-26$27.58$28.3287,900
2005-07-25$27.72$28.4666,700
2005-07-22$27.50$28.2458,100
2005-07-21$26.25$26.9519,600
2005-07-20$26.80$27.5238,100
2005-07-19$26.54$27.2545,500
2005-07-18$25.63$26.3254,100
2005-07-15$26.05$26.7517,400
2005-07-14$25.77$26.4638,200
2005-07-13$25.46$26.1445,700
2005-07-12$25.23$25.91117,800
2005-07-11$25.25$25.93224,300
2005-07-08$24.11$24.7688,800
2005-07-07$23.17$23.7932,200
2005-07-06$23.31$23.9374,900
2005-07-05$24.05$24.6953,300
2005-07-01$24.36$25.0133,700
2005-06-30$24.62$25.2827,100
2005-06-29$25.20$25.8817,700
2005-06-28$25.13$25.8045,100
2005-06-27$24.39$25.0424,600
2005-06-24$24.17$24.8250,600
2005-06-23$24.28$24.9325,300
2005-06-22$25.00$25.678,700
2005-06-21$24.80$25.466,100
2005-06-20$24.52$25.1814,900
2005-06-17$24.85$25.5251,400
2005-06-16$25.02$25.6928,600
2005-06-15$24.50$25.1629,000
2005-06-14$24.38$25.0321,700
2005-06-13$24.43$25.0818,600
2005-06-10$24.49$25.1532,900
2005-06-09$24.38$25.0325,100
2005-06-08$24.09$24.7424,500
2005-06-07$24.40$25.0557,300
2005-06-06$24.47$25.137,800
2005-06-03$24.55$25.2116,300
2005-06-02$24.91$25.5823,600
2005-06-01$25.00$25.6726,100
2005-05-31$24.60$25.2628,900
2005-05-27$24.78$25.444,300
2005-05-26$24.94$25.6131,400
2005-05-25$24.63$25.2914,800
2005-05-24$24.87$25.5436,000
2005-05-23$24.67$25.338,300
2005-05-20$24.67$25.3315,000
2005-05-19$24.89$25.5616,800
2005-05-18$24.86$25.5346,200
2005-05-17$24.49$25.1539,600
2005-05-16$24.30$24.9538,100
2005-05-13$23.71$24.3526,600
2005-05-12$23.41$24.0438,700
2005-05-11$23.53$24.1612,100
2005-05-10$23.50$24.1315,000
2005-05-09$24.16$24.7216,200
2005-05-06$24.08$24.6315,900
2005-05-05$23.77$24.3224,500
2005-05-04$23.88$24.4336,800
2005-05-03$23.00$23.5356,200
2005-05-02$23.96$24.5125,700
2005-04-29$23.47$24.0140,400
2005-04-28$23.00$23.5347,300
2005-04-27$24.34$24.9025,600
2005-04-26$24.21$24.7719,400
2005-04-25$24.61$25.1847,400
2005-04-22$24.40$24.9646,200
2005-04-21$24.27$24.8354,900
2005-04-20$23.47$24.0130,900
2005-04-19$24.04$24.5939,900
2005-04-18$23.70$24.2469,200
2005-04-15$23.48$24.0252,400
2005-04-14$24.13$24.6844,700
2005-04-13$24.40$24.9638,900
2005-04-12$24.56$25.1244,400
2005-04-11$24.27$24.8358,900
2005-04-08$24.32$24.8837,700
2005-04-07$24.72$25.298,000
2005-04-06$24.42$24.9846,200
2005-04-05$24.04$24.5948,400
2005-04-04$23.89$24.4489,900
2005-04-01$23.36$23.9045,100
2005-03-31$23.75$24.3045,300
2005-03-30$24.22$24.7857,500
2005-03-29$24.06$24.6137,300
2005-03-28$24.12$24.6736,000
2005-03-24$23.93$24.4851,000
2005-03-23$23.99$24.54124,200
2005-03-22$24.07$24.6222,900
2005-03-21$24.16$24.72216,900
2005-03-18$23.67$24.21123,800
2005-03-17$23.79$24.3482,500
2005-03-16$23.33$23.8740,300
2005-03-15$23.30$23.8445,200
2005-03-14$23.30$23.8481,100
2005-03-11$22.99$23.5277,100
2005-03-10$23.17$23.7078,900
2005-03-09$23.15$23.6846,800
2005-03-08$23.37$23.9158,200
2005-03-07$23.73$24.2856,700
2005-03-04$23.76$24.3130,700
2005-03-03$23.80$24.3517,000
2005-03-02$23.64$24.1823,900
2005-03-01$24.21$24.7743,600
2005-02-28$23.80$24.3529,800
2005-02-25$24.12$24.6726,800
2005-02-24$23.53$24.0724,000
2005-02-23$23.29$23.8339,100
2005-02-22$22.79$23.3145,400
2005-02-18$23.35$23.8921,000
2005-02-17$23.71$24.2518,800
2005-02-16$24.46$25.0257,000
2005-02-15$24.45$25.0114,300
2005-02-14$24.50$25.0612,400
2005-02-11$24.66$25.2324,900
2005-02-10$24.03$24.5837,700
2005-02-09$24.00$24.5542,800
2005-02-08$24.74$25.3135,800
2005-02-07$24.45$25.0130,200
2005-02-04$24.55$25.0439,800
2005-02-03$24.14$24.6215,000
2005-02-02$24.15$24.6326,500
2005-02-01$23.80$24.2848,300
2005-01-31$23.55$24.0259,400
2005-01-28$23.03$23.4916,700
2005-01-27$23.25$23.7219,300
2005-01-26$23.60$24.0726,900
2005-01-25$23.37$23.8425,900
2005-01-24$23.10$23.5633,600
2005-01-21$23.39$23.8619,400
2005-01-20$23.59$24.0639,900
2005-01-19$23.81$24.2927,000
2005-01-18$24.39$24.8847,500
2005-01-14$23.99$24.4721,000
2005-01-13$23.69$24.1724,400
2005-01-12$24.26$24.7528,500
2005-01-11$24.21$24.7025,500
2005-01-10$24.44$24.9338,000
2005-01-07$23.87$24.3522,300
2005-01-06$24.53$25.0224,100
2005-01-05$24.59$25.0849,900
2005-01-04$24.57$25.0638,900
2005-01-03$24.74$25.2434,300