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 — 2006

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2006-12-29$35.12$37.0248,500
2006-12-28$35.91$37.8560,500
2006-12-27$36.08$38.0380,800
2006-12-26$35.35$37.2665,600
2006-12-22$34.70$36.5815,600
2006-12-21$34.66$36.5450,900
2006-12-20$34.89$36.7862,000
2006-12-19$33.99$35.8373,000
2006-12-18$34.21$36.0660,900
2006-12-15$34.50$36.37130,300
2006-12-14$34.78$36.66142,600
2006-12-13$34.89$36.7871,000
2006-12-12$33.95$35.7949,000
2006-12-11$33.86$35.6939,300
2006-12-08$34.08$35.9231,000
2006-12-07$34.21$36.0651,400
2006-12-06$34.45$36.31101,700
2006-12-05$34.34$36.2040,200
2006-12-04$34.10$35.9563,900
2006-12-01$33.38$35.19160,800
2006-11-30$33.63$35.45115,000
2006-11-29$34.06$35.9063,500
2006-11-28$33.43$35.2435,000
2006-11-27$32.83$34.6176,000
2006-11-24$33.76$35.5915,600
2006-11-22$33.98$35.8240,500
2006-11-21$34.26$36.1150,700
2006-11-20$34.80$36.6849,100
2006-11-17$34.60$36.47111,000
2006-11-16$33.90$35.7396,600
2006-11-15$33.90$35.7360,600
2006-11-14$33.73$35.5693,900
2006-11-13$33.42$35.2338,900
2006-11-10$32.96$34.7483,700
2006-11-09$32.46$34.22255,700
2006-11-08$32.19$33.9322,900
2006-11-07$31.50$33.2064,500
2006-11-06$31.82$33.5433,100
2006-11-03$31.49$33.0420,800
2006-11-02$31.53$33.0853,300
2006-11-01$31.38$32.9284,300
2006-10-31$31.68$33.2487,600
2006-10-30$31.84$33.4091,400
2006-10-27$31.88$33.4561,200
2006-10-26$32.43$34.02141,700
2006-10-25$33.00$34.6247,100
2006-10-24$33.20$34.8345,200
2006-10-23$33.04$34.6631,100
2006-10-20$32.92$34.5472,700
2006-10-19$33.19$34.8246,700
2006-10-18$32.59$34.1932,600
2006-10-17$32.97$34.5927,900
2006-10-16$33.12$34.7545,900
2006-10-13$33.26$34.8933,800
2006-10-12$32.79$34.4064,400
2006-10-11$32.30$33.8938,200
2006-10-10$32.48$34.0749,900
2006-10-09$32.20$33.78101,900
2006-10-06$32.17$33.7524,500
2006-10-05$31.95$33.5255,000
2006-10-04$32.00$33.5756,400
2006-10-03$31.32$32.8690,400
2006-10-02$31.65$33.2075,600
2006-09-29$32.01$33.5861,800
2006-09-28$32.96$34.5852,100
2006-09-27$33.19$34.8231,400
2006-09-26$32.70$34.3139,600
2006-09-25$32.56$34.1649,700
2006-09-22$32.20$33.7856,900
2006-09-21$32.09$33.6733,000
2006-09-20$32.58$34.1853,500
2006-09-19$31.69$33.25111,500
2006-09-18$31.45$32.9930,800
2006-09-15$31.72$33.28106,000
2006-09-14$31.09$32.6257,600
2006-09-13$31.39$32.93147,500
2006-09-12$31.24$32.7754,400
2006-09-11$31.05$32.5720,300
2006-09-08$31.01$32.5341,000
2006-09-07$30.85$32.3669,100
2006-09-06$31.37$32.9124,200
2006-09-05$31.87$33.4333,800
2006-09-01$31.74$33.3039,300
2006-08-31$31.28$32.8261,600
2006-08-30$31.52$33.0749,400
2006-08-29$31.19$32.7264,600
2006-08-28$30.66$32.1736,200
2006-08-25$30.50$32.0044,800
2006-08-24$30.51$32.0154,100
2006-08-23$30.42$31.9159,100
2006-08-22$30.83$32.3444,800
2006-08-21$30.79$32.3064,800
2006-08-18$31.45$32.9987,600
2006-08-17$31.50$33.0562,700
2006-08-16$31.48$33.0355,600
2006-08-15$31.17$32.7050,600
2006-08-14$30.36$31.8580,800
2006-08-11$30.09$31.5762,800
2006-08-10$30.32$31.81112,100
2006-08-09$30.35$31.84153,800
2006-08-08$30.58$32.0844,000
2006-08-07$30.81$32.3269,000
2006-08-04$31.65$33.05176,900
2006-08-03$31.71$33.1167,900
2006-08-02$31.03$32.4061,500
2006-08-01$30.55$31.9085,900
2006-07-31$31.23$32.61107,800
2006-07-28$31.41$32.80145,100
2006-07-27$30.94$32.31748,900
2006-07-26$34.53$36.0531,400
2006-07-25$34.67$36.2050,500
2006-07-24$34.99$36.5386,600
2006-07-21$32.77$34.2289,400
2006-07-20$33.52$35.0045,700
2006-07-19$35.11$36.6652,000
2006-07-18$33.31$34.7824,500
2006-07-17$32.92$34.3725,000
2006-07-14$33.08$34.5439,100
2006-07-13$33.45$34.9354,600
2006-07-12$33.78$35.2751,300
2006-07-11$34.00$35.5047,200
2006-07-10$33.92$35.4239,700
2006-07-07$33.23$34.7053,000
2006-07-06$34.18$35.6958,200
2006-07-05$34.53$36.0597,500
2006-07-03$35.65$37.22133,800
2006-06-30$37.38$39.03163,500
2006-06-29$35.70$37.28107,400
2006-06-28$33.59$35.0774,800
2006-06-27$33.71$35.2083,700
2006-06-26$33.88$35.3749,300
2006-06-23$32.92$34.3738,100
2006-06-22$33.33$34.8050,100
2006-06-21$33.18$34.6433,000
2006-06-20$32.38$33.8123,400
2006-06-19$32.70$34.1449,900
2006-06-16$33.09$34.55226,100
2006-06-15$33.77$35.2637,400
2006-06-14$32.60$34.0433,100
2006-06-13$32.64$34.0842,200
2006-06-12$32.63$34.0736,600
2006-06-09$33.14$34.6015,300
2006-06-08$33.65$35.1341,300
2006-06-07$33.06$34.5268,800
2006-06-06$32.63$34.0767,500
2006-06-05$32.25$33.6797,200
2006-06-02$33.83$35.3238,900
2006-06-01$34.04$35.5457,500
2006-05-31$33.60$35.08123,000
2006-05-30$33.40$34.8755,500
2006-05-26$34.03$35.5339,300
2006-05-25$33.88$35.3722,600
2006-05-24$33.52$35.0094,700
2006-05-23$33.00$34.4685,100
2006-05-22$32.46$33.8944,300
2006-05-19$32.70$34.1450,300
2006-05-18$32.46$33.8925,400
2006-05-17$32.57$34.0147,800
2006-05-16$32.64$34.0820,700
2006-05-15$32.57$34.0152,500
2006-05-12$32.30$33.7346,400
2006-05-11$32.58$34.0247,100
2006-05-10$33.85$35.3432,900
2006-05-09$34.18$35.6941,600
2006-05-08$34.03$35.5343,400
2006-05-05$34.18$35.5438,000
2006-05-04$34.33$35.7030,300
2006-05-03$34.52$35.9031,900
2006-05-02$34.30$35.6747,000
2006-05-01$33.73$35.0771,400
2006-04-28$33.75$35.0929,300
2006-04-27$33.79$35.1437,100
2006-04-26$34.30$35.6732,900
2006-04-25$33.68$35.0235,300
2006-04-24$33.61$34.9551,600
2006-04-21$34.53$35.9158,800
2006-04-20$35.27$36.6831,300
2006-04-19$35.42$36.8352,500
2006-04-18$34.98$36.3763,000
2006-04-17$33.62$34.9662,500
2006-04-13$34.39$35.7650,100
2006-04-12$33.81$35.1646,900
2006-04-11$33.40$34.7331,200
2006-04-10$34.39$35.7679,000
2006-04-07$33.99$35.3463,300
2006-04-06$34.49$35.8691,600
2006-04-05$35.02$36.4299,000
2006-04-04$33.82$35.1760,600
2006-04-03$33.50$34.8369,200
2006-03-31$33.46$34.7982,900
2006-03-30$34.72$36.1039,900
2006-03-29$34.60$35.9844,500
2006-03-28$34.11$35.4757,100
2006-03-27$34.48$35.8555,600
2006-03-24$35.33$36.7447,100
2006-03-23$35.15$36.5556,600
2006-03-22$34.90$36.2964,600
2006-03-21$34.07$35.4385,700
2006-03-20$34.69$36.0752,500
2006-03-17$34.86$36.25176,800
2006-03-16$34.05$35.4143,400
2006-03-15$34.26$35.6365,600
2006-03-14$33.98$35.33119,000
2006-03-13$33.65$34.9963,200
2006-03-10$33.90$35.2552,400
2006-03-09$33.86$35.21145,800
2006-03-08$33.81$35.1666,300
2006-03-07$34.17$35.5347,600
2006-03-06$34.27$35.6455,400
2006-03-03$34.07$35.4325,300
2006-03-02$34.37$35.7461,100
2006-03-01$34.09$35.4588,400
2006-02-28$33.53$34.8799,600
2006-02-27$33.73$35.07126,100
2006-02-24$33.25$34.57163,600
2006-02-23$32.98$34.2961,200
2006-02-22$33.10$34.42116,100
2006-02-21$33.07$34.3961,200
2006-02-17$33.22$34.5498,500
2006-02-16$33.33$34.6679,900
2006-02-15$33.17$34.4970,400
2006-02-14$33.26$34.5974,700
2006-02-13$32.97$34.2853,900
2006-02-10$32.89$34.2044,500
2006-02-09$33.00$34.3159,100
2006-02-08$33.10$34.4235,700
2006-02-07$32.72$34.0266,100
2006-02-06$32.89$34.2051,400
2006-02-03$32.67$33.8446,400
2006-02-02$32.07$33.2241,400
2006-02-01$32.64$33.8145,700
2006-01-31$32.25$33.4091,100
2006-01-30$32.40$33.56122,500
2006-01-27$31.70$32.83229,100
2006-01-26$31.02$32.1359,300
2006-01-25$31.00$32.1184,000
2006-01-24$31.03$32.1464,900
2006-01-23$29.81$30.8735,800
2006-01-20$29.03$30.0727,500
2006-01-19$29.62$30.6826,000
2006-01-18$29.09$30.1332,700
2006-01-17$29.03$30.0736,400
2006-01-13$29.73$30.7930,600
2006-01-12$29.07$30.1123,900
2006-01-11$29.02$30.0650,000
2006-01-10$29.20$30.2448,100
2006-01-09$29.15$30.1950,400
2006-01-06$29.30$30.3551,200
2006-01-05$29.04$30.0830,800
2006-01-04$29.13$30.1735,300
2006-01-03$29.33$30.3844,400