Company Analysis

First Interstate BancSystem, Inc. (FIBK)

Nasdaq: FIBK · State Commercial Banks · Billings, MT · filing with the SEC since 1996
Grade4.8
◀ Past 5.0● Present 4.7▶ Future 4.3

Who owns First Interstate BancSystem, Inc.

As filed with the SEC
Holders of 5% or more
4
Blackrock, Inc. holds 12.9% of Class A Stock, as its SCHEDULE 13G/A filed Jan 8, 2026 says.
Directors and officers
25
report now, of 61 people on the record since 2006. Their holdings as a group are not read here.
Institutions as a whole
n/a
The record does not read the share held by managers that file Form 13F, so none is printed and no split of the rest is estimated. What it holds is the 4 named at left.
Holders of 5% or moreshare of the class, as filed
Blackrock, Inc.
SCHEDULE 13G/A · filed Jan 8, 2026 · Class A Stock · 6.3% in Apr 17, 2025
12.9%
State Street Corporation
SCHEDULE 13G · filed Aug 7, 2026 · COMMON STOCK · 5.3% in Feb 9, 2026
6.4%
Vanguard Portfolio Management
5.46%
Dimensional Fund Advisors LP
5.2%
Fmr LLC
SCHEDULE 13G/A · filed Aug 6, 2025 · COMMON STOCK · reported falling below 5%, from 6.5% in Feb 12, 2025
under 5%
Wellington Management Group LLP
SCHEDULE 13G/A · filed May 15, 2026 · Common Stock · reported falling below 5%, from 5.6% in Nov 12, 2025
under 5%
Franklin Mutual Advisers, LLC
SCHEDULE 13G/A · filed Nov 4, 2025 · Common Stock, $0.00001 par value · reported falling below 5%
under 5%
The Vanguard Group
SCHEDULE 13G/A · filed Mar 26, 2026 · Common Stock · reported falling below 5%, from 10% in Mar 5, 2026
under 5%
What FIBK reports owning in othersstakes of 5% or more, and other ties

13 subsidiaries in 1 country, from the list filed with the 10-K filed Feb 26, 2026. Its Form 13F-HR for Mar 31, 2021 lists 104 holdings. The record carries no value for them.

Insider tradesForm 4
7sales
0purchases
0sales on a scheduled plan
3people selling
$1.4Msold, in dollars
$0bought, in dollars
Open-market trades on Form 4 from Nov 10, 2025 to Nov 10, 2026. A scheduled plan is a selling program set in advance under SEC rule 10b5-1. The trades are listed as filed and do not feed the grade.
By calendar yearSoldBought
17181920212223242526
2026 runs to Nov 10, 2026. Dollars as filed, summed by the transaction date.
People who traded in the window7 of 81 on the roster
PersonRole as filedSalesSoldOn a planBuysBought
Jonathan Scott As Trustee Of The Jonathan R Scott Trust Dated As Of 4/21/0410% owner5$3.1M00$0
Ixl Ltd Liability Co10% owner5$1.4M00$0
Heyneman John M Jrdirector2$1.1M00$0
Scott Jonathan RBsns Developmt Manager4$800,00000$0
Elizabeth Lauren Scott Rose Trust10% owner3$500,00000$0
Scott James R. Jrdirector2$100,00000$0
Harrison William Scott Trust10% owner1$100,00000$0
SI Assistanton FIBK · research, not advice