Marcy D Mutch

Date	Company	Security	Transaction	Code	Indirect	10b5-1	$Price	#Shares	$Value	#Remaining
15 Mar 24	FIBK First Interstate BancSystem	Common Stock	Grant	Acquire A	No	No	0	10,359	0.00	61,633
15 Mar 24	FIBK First Interstate BancSystem	Common Stock	Payment of exercise	Dispose F	No	No	25.21	668	16.84 k	51,274
15 Mar 24	FIBK First Interstate BancSystem	Common Stock	Payment of exercise	Dispose F	No	No	25.21	524	13.21 k	51,942
15 Mar 24	FIBK First Interstate BancSystem	Common Stock	Payment of exercise	Dispose F	No	No	25.21	340	8.57 k	52,466
15 Mar 24	FIBK First Interstate BancSystem	Common Stock	Grant	Acquire A	No	No	0	10,359	0.00	61,747
15 Mar 24	FIBK First Interstate BancSystem	Common Stock	Payment of exercise	Dispose F	No	No	25.21	678	17.09 k	51,388
15 Mar 24	FIBK First Interstate BancSystem	Common Stock	Payment of exercise	Dispose F	No	No	25.21	452	11.39 k	52,066
15 Mar 24	FIBK First Interstate BancSystem	Common Stock	Payment of exercise	Dispose F	No	No	25.21	288	7.26 k	52,518
24 May 23	FIBK First Interstate BancSystem	Common Stock	Grant	Acquire A	No	No	0	6,929	0.00	52,806

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