Kumi Yamamoto Baruffi

Date	Company	Security	Transaction	Code	Indirect	10b5-1	$Price	#Shares	$Value	#Remaining
1 Jan 25	COLB Columbia Banking System	Common Stock	Payment of exercise	Dispose F	No	No	27.01	772	20.85 k	56,523
1 Jan 25	COLB Columbia Banking System	Common Stock	Payment of exercise	Dispose F	No	No	27.01	689	18.61 k	57,295
1 Mar 24	COLB Columbia Banking System	Common Stock	Grant	Acquire A	No	No	17.87	13,710	245.00 k	57,984
1 Mar 24	COLB Columbia Banking System	RSU Common Stock	Grant	Acquire A	No	No	17.87	6,855	122.50 k	13,710
1 Mar 24	COLB Columbia Banking System	RSU Common Stock	Grant	Acquire A	No	No	17.87	6,855	122.50 k	6,855
15 Feb 24	COLB Columbia Banking System	Common Stock	Grant	Acquire A	No	No	19.01	1,012	19.24 k	44,274
15 Feb 24	COLB Columbia Banking System	Common Stock	Grant	Acquire A	No	No	19.01	673	12.79 k	43,262
1 Jan 24	COLB Columbia Banking System	Common Stock	Payment of exercise	Dispose F	No	No	26.68	461	12.30 k	42,589
1 Jan 24	COLB Columbia Banking System	Common Stock	Payment of exercise	Dispose F	No	No	26.68	461	12.30 k	43,050

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