SEC Form 4 · accession 0000860413-18-000082

FIRST INTERSTATE BANCSYSTEM INC · FIBK

Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗

Reporting owner

Director · 10% Owner

Period of report

May 23, 2018

Accepted (ET)

May 25, 2018 · 2:52 pm EDT

Rule 10b5-1 plan

unknown — predates the checkbox

Issuer CIK

0000860413

Table I — non-derivative securities

Security	Date	Code	Shares	Price	A/D	Owned after	D/I	Nature of ownership
Class A Common Stock	May 23, 2018	M	1,190	$0.00	A	1,190	I	By Spouse
Class A Common Stock	holding	—	—		—	9,648	I	By 401(k)
Class A Common Stock	holding	—	—		—	13,216	I	By Trust

Security	Conv. / exercise price	Date	Code	Shares	A/D	Exercisable	Expires	Underlying	Underlying shares	Owned after	D/I
Class B Common Stock^F1	$0.00	May 23, 2018	M	1,190	D	—	—	Class A Common Stock	1,190	74,145	I
Class B Common Stock^F1	$0.00	holding	—	—	—	—	—	Class A Common Stock	156,279	156,279	I
Class B Common Stock^F1	$0.00	holding	—	—	—	—	—	Class A Common Stock	3,795,676	3,795,676	I
Class B Common Stock^F1	$0.00	holding	—	—	—	—	—	Class A Common Stock	85,836	85,836	I
Class B Common Stock^F1	$0.00	holding	—	—	—	—	—	Class A Common Stock	803,310	803,310	I

F1The Class B Common Stock is convertible at any time into Class A Common Stock on a share for share basis at the discretion of the holder. The conversion feature of the Class B Common Stock does not expire.