Columbia Banking System, Inc. (COLB)

NASDAQ: COLB · Real-Time Price · USD

29.76

-0.28 (-0.93%)

At close: Sep 11, 2026, 4:00 PM EDT

30.11

+0.35 (1.18%)

After-hours: Sep 11, 2026, 7:30 PM EDT

Columbia Banking System Stock Price History

Historical Data

Date	Open	High	Low	Close	Adj. Close	Change	Volume
Sep 11, 2026	30.40	30.45	29.68	30.11	30.11	0.23%	2,554,809
Sep 10, 2026	29.75	30.13	29.44	30.04	30.04	0.67%	3,492,636
Sep 9, 2026	30.15	30.44	29.70	29.84	29.84	-1.42%	2,692,708
Sep 8, 2026	30.81	30.82	30.24	30.27	30.27	-1.72%	3,413,751
Sep 4, 2026	30.35	30.91	30.35	30.80	30.80	1.15%	2,274,010
Sep 3, 2026	30.09	30.56	30.09	30.45	30.45	1.23%	2,927,396
Sep 2, 2026	29.44	30.41	29.44	30.08	30.08	2.59%	3,838,641
Sep 1, 2026	29.76	30.20	29.22	29.32	29.32	-1.08%	3,852,109
Aug 31, 2026	30.13	30.13	29.60	29.64	29.64	-1.43%	2,357,791
Aug 28, 2026	30.41	30.59	30.02	30.07	30.07	-0.82%	2,649,627
Aug 27, 2026	30.51	30.76	30.25	30.69	30.32	-0.07%	2,207,897
Aug 26, 2026	30.67	30.88	30.45	30.71	30.34	0.59%	2,523,705
Aug 25, 2026	30.90	30.90	30.37	30.53	30.16	-0.36%	2,332,954
Aug 24, 2026	30.81	31.08	30.59	30.64	30.27	-0.55%	2,428,267
Aug 21, 2026	31.01	31.23	30.61	30.81	30.44	-0.10%	1,991,410
Aug 20, 2026	30.97	31.10	30.76	30.84	30.47	-0.74%	2,771,870
Aug 19, 2026	32.19	32.35	30.91	31.07	30.70	-3.33%	5,157,396
Aug 18, 2026	32.37	32.49	32.02	32.14	31.75	-0.62%	2,956,601
Aug 17, 2026	32.69	32.83	32.30	32.34	31.95	-1.07%	2,609,411
Aug 14, 2026	32.46	32.78	32.31	32.69	32.30	0.77%	2,543,430
Aug 13, 2026	32.50	32.60	32.33	32.44	32.05	0.59%	4,270,553
Aug 12, 2026	31.88	32.28	31.74	32.25	31.86	1.70%	3,109,029
Aug 11, 2026	31.29	31.88	31.27	31.71	31.33	1.44%	2,056,100
Aug 10, 2026	31.19	31.39	30.95	31.26	30.88	0.06%	2,429,587
Aug 7, 2026	30.94	31.29	30.76	31.24	30.86	0.68%	2,881,825
Aug 6, 2026	31.64	31.69	31.01	31.03	30.66	-1.02%	1,871,183
Aug 5, 2026	31.93	31.99	31.33	31.35	30.97	-1.35%	1,924,962
Aug 4, 2026	31.65	32.18	31.44	31.78	31.40	0.89%	2,329,462
Aug 3, 2026	31.43	31.75	31.27	31.50	31.12	0.74%	2,583,661
Jul 31, 2026	31.50	31.50	30.87	31.27	30.89	0.06%	2,966,161
Jul 30, 2026	31.06	31.40	31.00	31.25	30.87	1.53%	4,174,065
Jul 29, 2026	31.09	31.25	30.75	30.78	30.41	-1.57%	2,676,987
Jul 28, 2026	30.90	31.34	30.90	31.27	30.89	1.20%	2,874,161
Jul 27, 2026	31.37	31.56	30.87	30.90	30.53	-0.80%	2,940,809
Jul 24, 2026	31.04	31.65	30.82	31.15	30.77	-3.44%	5,851,563
Jul 23, 2026	32.25	32.30	31.56	32.26	31.87	-1.13%	4,889,121
Jul 22, 2026	32.90	32.97	32.38	32.63	32.24	-0.67%	2,549,564
Jul 21, 2026	32.80	32.86	32.34	32.85	32.45	0.15%	2,551,067
Jul 20, 2026	33.33	33.46	32.62	32.80	32.40	-1.32%	2,851,790
Jul 17, 2026	33.40	33.65	32.96	33.24	32.84	-1.10%	3,224,008
Jul 16, 2026	32.59	33.68	32.59	33.61	33.20	3.19%	3,500,895
Jul 15, 2026	32.32	32.77	32.26	32.57	32.18	0.99%	3,430,210
Jul 14, 2026	32.09	32.54	32.06	32.25	31.86	0.84%	2,074,045
Jul 13, 2026	32.11	32.20	31.79	31.98	31.59	-0.22%	2,011,001
Jul 10, 2026	32.00	32.21	31.79	32.05	31.66	0.72%	1,746,335
Jul 9, 2026	31.48	31.98	31.48	31.82	31.44	1.78%	2,467,470
Jul 8, 2026	32.03	32.05	30.84	31.27	30.89	-2.66%	2,613,820
Jul 7, 2026	32.34	32.37	32.00	32.12	31.73	-0.37%	2,281,196
Jul 6, 2026	31.73	32.25	31.65	32.24	31.85	1.64%	2,634,822
Jul 2, 2026	32.63	32.77	31.60	31.72	31.34	-2.43%	3,434,797