Columbia Banking System, Inc. (COLB)

NASDAQ: COLB · Real-Time Price · USD

30.81

-0.03 (-0.10%)

At close: Aug 21, 2026, 4:00 PM EDT

30.82

+0.01 (0.03%)

After-hours: Aug 21, 2026, 7:30 PM EDT

Columbia Banking System Stock Price History

Historical Data

Date	Open	High	Low	Close	Adj. Close	Change	Volume
Aug 21, 2026	31.01	31.23	30.61	30.81	30.81	-0.10%	1,991,201
Aug 20, 2026	30.97	31.10	30.76	30.84	30.84	-0.74%	2,771,020
Aug 19, 2026	32.19	32.35	30.91	31.07	31.07	-3.33%	5,134,214
Aug 18, 2026	32.37	32.49	32.02	32.14	32.14	-0.62%	2,956,600
Aug 17, 2026	32.69	32.83	32.30	32.34	32.34	-1.07%	2,609,411
Aug 14, 2026	32.46	32.78	32.31	32.69	32.69	0.77%	2,543,430
Aug 13, 2026	32.50	32.60	32.33	32.44	32.44	0.59%	4,270,553
Aug 12, 2026	31.88	32.28	31.74	32.25	32.25	1.70%	3,109,029
Aug 11, 2026	31.29	31.88	31.27	31.71	31.71	1.44%	2,056,100
Aug 10, 2026	31.19	31.39	30.95	31.26	31.26	0.06%	2,429,587
Aug 7, 2026	30.94	31.29	30.76	31.24	31.24	0.68%	2,881,825
Aug 6, 2026	31.64	31.69	31.01	31.03	31.03	-1.02%	1,871,183
Aug 5, 2026	31.93	31.99	31.33	31.35	31.35	-1.35%	1,924,962
Aug 4, 2026	31.65	32.18	31.44	31.78	31.78	0.89%	2,329,462
Aug 3, 2026	31.43	31.75	31.27	31.50	31.50	0.74%	2,583,661
Jul 31, 2026	31.50	31.50	30.87	31.27	31.27	0.06%	2,966,161
Jul 30, 2026	31.06	31.40	31.00	31.25	31.25	1.53%	4,174,065
Jul 29, 2026	31.09	31.25	30.75	30.78	30.78	-1.57%	2,676,987
Jul 28, 2026	30.90	31.34	30.90	31.27	31.27	1.20%	2,874,161
Jul 27, 2026	31.37	31.56	30.87	30.90	30.90	-0.80%	2,940,809
Jul 24, 2026	31.04	31.65	30.82	31.15	31.15	-3.44%	5,851,563
Jul 23, 2026	32.25	32.30	31.56	32.26	32.26	-1.13%	4,889,121
Jul 22, 2026	32.90	32.97	32.38	32.63	32.63	-0.67%	2,549,564
Jul 21, 2026	32.80	32.86	32.34	32.85	32.85	0.15%	2,551,067
Jul 20, 2026	33.33	33.46	32.62	32.80	32.80	-1.32%	2,851,790
Jul 17, 2026	33.40	33.65	32.96	33.24	33.24	-1.10%	3,224,008
Jul 16, 2026	32.59	33.68	32.59	33.61	33.61	3.19%	3,500,895
Jul 15, 2026	32.32	32.77	32.26	32.57	32.57	0.99%	3,430,210
Jul 14, 2026	32.09	32.54	32.06	32.25	32.25	0.84%	2,074,045
Jul 13, 2026	32.11	32.20	31.79	31.98	31.98	-0.22%	2,011,001
Jul 10, 2026	32.00	32.21	31.79	32.05	32.05	0.72%	1,746,335
Jul 9, 2026	31.48	31.98	31.48	31.82	31.82	1.78%	2,467,470
Jul 8, 2026	32.03	32.05	30.84	31.27	31.27	-2.66%	2,613,820
Jul 7, 2026	32.34	32.37	32.00	32.12	32.12	-0.37%	2,281,196
Jul 6, 2026	31.73	32.25	31.65	32.24	32.24	1.64%	2,634,822
Jul 2, 2026	32.63	32.77	31.60	31.72	31.72	-2.43%	3,434,797
Jul 1, 2026	32.20	32.72	31.94	32.51	32.51	1.44%	3,082,273
Jun 30, 2026	31.92	32.26	31.72	32.05	32.05	0.19%	2,470,034
Jun 29, 2026	32.08	32.21	31.72	31.99	31.99	-0.50%	2,640,050
Jun 26, 2026	32.12	32.26	31.84	32.15	32.15	0.25%	5,394,528
Jun 25, 2026	31.58	32.25	31.30	32.07	32.07	1.71%	2,923,447
Jun 24, 2026	31.29	31.57	31.02	31.53	31.53	0.83%	2,354,833
Jun 23, 2026	30.80	31.32	30.72	31.27	31.27	1.30%	2,389,144
Jun 22, 2026	30.56	31.00	30.56	30.87	30.87	1.05%	2,685,048
Jun 18, 2026	30.31	30.63	30.13	30.55	30.55	1.66%	6,000,393
Jun 17, 2026	30.78	31.10	29.77	30.05	30.05	-2.69%	3,700,848
Jun 16, 2026	31.16	31.78	30.83	30.88	30.88	-0.23%	2,463,156
Jun 15, 2026	31.75	31.84	30.87	30.95	30.95	-1.15%	3,584,812
Jun 12, 2026	31.00	31.46	30.95	31.31	31.31	1.59%	2,708,402
Jun 11, 2026	30.39	30.84	30.15	30.82	30.82	1.65%	2,407,730