FIRST INTST BANCSYSTEM INC

Ticker: FIBK CUSIP: 32055Y201 Class: Common Stock

Robeco Institutional Asset Management B.V.'s Holding History (CIK: 0001418773)

Note: Option positions (PUT/CALL) are excluded.

Q1 2017

Shares 42,585 Value ($000) $1,688 Avg Close $27.13 Range $24.24 - $29.59

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2017	42,585	$1,688	$27.13	$24.24 - $29.59