Torran B Nixon

Date	Company	Security	Transaction	Code	Indirect	10b5-1	$Price	#Shares	$Value	#Remaining
14 Feb 25	COLB Columbia Banking System	Common Stock	Payment of exercise	Dispose F	No	No	27.41	2,098	57.51 k	116,417
8 Mar 24	COLB Columbia Banking System	Common Stock	Payment of exercise	Dispose F	No	No	19.51	2,411	47.04 k	118,515
8 Mar 24	COLB Columbia Banking System	Common Stock	Payment of exercise	Dispose F	No	No	19.51	4,186	81.67 k	120,926
1 Mar 24	COLB Columbia Banking System	RSU Common Stock	Grant	Acquire A	No	No	17.87	16,787	299.98 k	33,574
1 Mar 24	COLB Columbia Banking System	RSU Common Stock	Grant	Acquire A	No	No	17.87	16,787	299.98 k	16,787
1 Mar 24	COLB Columbia Banking System	RSU Common Stock	Grant	Acquire A	No	No	17.87	22,383	399.98 k	22,383
28 Feb 24	COLB Columbia Banking System	Common Stock	Payment of exercise	Dispose F	No	No	17.76	4,086	72.57 k	125,112
15 Feb 24	COLB Columbia Banking System	Common Stock	Payment of exercise	Dispose F	No	No	19.01	1,905	36.21 k	129,198

Data from 3, 4 and 5 filings. Values as filed, not updated for current price.