Comparable stake leader
BlackRock, Inc.
SEC ownership of FIRST INTERSTATE BANCSYSTEM INC
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0000860413.
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
16 Sep 2026
- Public ticker
- FIBK on Nasdaq
- Parsed ownership sources
-
13F, 13D/G, and 3/4/5
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
BlackRock, Inc.
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
50 of 50
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
BlackRock, Inc.
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
16 Sep 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0000860413
- Issuer location
- Billings, MT
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
3 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of FIRST INTERSTATE BANCSYSTEM INC (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
BlackRock, Inc.
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
16 Sep 2026
13F
13D/G
3/4/5
Lead comparable stake: 13%
13D/G row: BlackRock, Inc.
Showing 1-8 of 50 holder rows.
Quick read
BlackRock, Inc. leads the comparable SEC ownership view at 13%.
50 of 50 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens BlackRock, Inc.'s linked filing trail.
Comparable ownership
Top 5
BlackRock, Inc.
13%
STATE STREET CORP
6.4%
VANGUARD PORTFOLIO MANAGEMENT LLC
5.5%
DIMENSIONAL FUND ADVISORS LP
5.2%
FMR LLC
5%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 50 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| BlackRock, Inc. |
13F
13D/G
Company
|
13%
from 13D/G
|
$529,532,993
13,732,702 shares
|
— | 30 Jun 2026 |
| STATE STREET CORP |
13F
13D/G
Company · STATE STREET CORPORATION
|
6.4%
from 13D/G
|
$241,031,504
6,250,817 shares
|
— | 30 Jun 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC |
13F
13D/G
Company · Vanguard Portfolio Management
|
5.5%
from 13D/G
|
$212,328,943
5,506,456 shares
|
— | 30 Jun 2026 |
| DIMENSIONAL FUND ADVISORS LP |
13F
13D/G
Company
|
5.2%
from 13D/G
|
$223,002,499
5,783,231 shares
|
— | 30 Jun 2026 |
| FMR LLC |
13D/G
13F
Company
|
5%
|
$162,452,034
5,210,136 shares
|
-$49,145,854 | 30 Jun 2025 |
| WELLINGTON MANAGEMENT GROUP LLP |
13F
13D/G
Company
|
4%
from 13D/G
|
$145,307,306
3,768,343 shares
|
— | 30 Jun 2026 |
| FRANKLIN MUTUAL ADVISERS LLC |
13D/G
|
4%
|
$134,564,765
4,222,302 shares
|
$0 | 30 Sep 2025 |
| Jeremy Scott |
3/4/5
Director, 10%+ Owner
|
3.6%
|
$117,507,612
3,518,192 shares
|
— | 01 Jun 2026 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
Net insider flow leans to selling over the last 12 months. Net value: -$33,148,956.
Buys
$0
Insiders: 0
Sells
$33,148,956
Insiders: 12
Net
-$33,148,956
Shares: -930,448
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 0
Shares: 930,448
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 223,500 | $0 | $8,493,231 | -$8,493,231 |
| 3-6 | 0 | 574,716 | $0 | $20,436,722 | -$20,436,722 |
| 6-9 | 0 | 5,000 | $0 | $182,315 | -$182,315 |
| 9-12 | 0 | 127,232 | $0 | $4,036,688 | -$4,036,688 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-20 of 57 reporting-owner rows connected to FIRST INTERSTATE BANCSYSTEM INC. Open a relationship link for the CIK-to-CIK filing trail.
Rows
57
Largest Forms 3/4/5 holder
Jeremy Scott
Net 12M change
-$33,148,954
Latest report
16 Sep 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Jeremy Scott | Director, 10%+ Owner | $117,507,612 | Mixed | 01 Jun 2026 | ||
| James R. Scott | 10%+ Owner | $92,822,020 | Mixed | 31 Dec 2025 | ||
| James R. Scott Jr. | Director, 10%+ Owner | $67,905,940 | Mixed | 01 Jun 2026 | ||
| Homer A. Scott Jr. | 10%+ Owner | $64,188,080 | Mixed | 05 Sep 2023 | ||
| John M. Heyneman Jr. | Director, 10%+ Owner | $50,091,414 | -$2,067,605 | -4% | Mixed | 01 Jun 2026 |
| Homer Scott Jr Trust, Homer Scott Jr. & First Interstate Wealth Management Co Trustees | 10%+ Owner | $30,557,201 | Filing P/S | 14 Dec 2023 | ||
| Harrison William Scott Trust | 10%+ Owner | $30,493,450 | -$4,287,385 | -12% | Filing P/S | 14 Sep 2026 |
| Jonathan Scott as Trustee of the Jonathan R Scott Trust Dated as of 4/21/04 | 10%+ Owner | $30,493,450 | -$4,287,385 | -12% | Filing P/S | 14 Sep 2026 |
| Harper Grace Scott Trust | 10%+ Owner | $30,493,450 | -$4,287,385 | -12% | Filing P/S | 14 Sep 2026 |
| Jonathan R. Scott | 10%+ Owner | $30,493,450 | -$5,485,484 | -15% | Filing P/S | 14 Sep 2026 |
| Holland Elizabeth Scott Trust | 10%+ Owner | $30,493,450 | -$4,287,385 | -12% | Filing P/S | 14 Sep 2026 |
| Elizabeth Lauren Scott Rose Trust | 10%+ Owner | $18,229,390 | -$641,128 | -3.4% | Filing P/S | 16 Sep 2026 |
| Julie A Scott Rose Trustee of the Julie A Scott Rose Trust Dated 5-14-2002 | 10%+ Owner | $18,229,390 | -$641,128 | -3.4% | Filing P/S | 16 Sep 2026 |
| Juliana Sarah Scott Rose Trust | 10%+ Owner | $18,229,390 | -$641,128 | -3.4% | Filing P/S | 16 Sep 2026 |
| Julie A. Scott | 10%+ Owner | $18,229,390 | -$641,128 | -3.4% | Filing P/S | 16 Sep 2026 |
| IXL Ltd Liability Co | 10%+ Owner | $18,229,390 | -$4,928,513 | -21% | Filing P/S | 16 Sep 2026 |
| Susan Scott Heyneman | 10%+ Owner | $14,747,636 | Mixed | 18 Jul 2022 | ||
| Geoffrey D. Scott | 10%+ Owner | $13,259,905 | Mixed | 31 Dec 2025 | ||
| Risa Kae Scott | 10%+ Owner | $10,385,981 | Mixed | 03 Dec 2025 | ||
| Susan Scott Heyneman Trust, Susan Heyneman & First Interstate Wealth Management Co-Trustees | 10%+ Owner | $7,351,065 | -$953,300 | -11% | Filing P/S | 01 Dec 2025 |
Recent insider transactions for FIRST INTERSTATE BANCSYSTEM INC
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Scott Julie A | FIBK | Common Stock | Sale | -0.55% | $101,628 | $37.64 | -2,700 | 484,309 | 16 Sep 2026 | See Footnote |
| Scott Julie A | FIBK | Common Stock | Sale | -0.55% | $101,628 | $37.64 | -2,700 | 484,309 | 16 Sep 2026 | See Footnote |
| Scott Julie A | FIBK | Common Stock | Sale | -0.55% | $101,628 | $37.64 | -2,700 | 484,309 | 16 Sep 2026 | See Footnote |
| Scott Julie A | FIBK | Common Stock | Sale | -0.55% | $101,628 | $37.64 | -2,700 | 484,309 | 16 Sep 2026 | See Footnote |
| Julie A. Scott | FIBK | Common Stock | Sale | -0.55% | $101,628 | $37.64 | -2,700 | 484,309 | 16 Sep 2026 | See Footnote |
| Jeffery D. Lee | FIBK | Common Stock | Award | 5,417 | 5,417 | 14 Sep 2026 | Direct | |||
| Scott Jonathan R | FIBK | Common Stock | Sale | -0.98% | $300,968 | $37.29 | -8,071 | 817,738 | 14 Sep 2026 | See Footnote |
| Scott Jonathan R | FIBK | Common Stock | Sale | -0.98% | $300,968 | $37.29 | -8,071 | 817,738 | 14 Sep 2026 | See Footnote |
| Scott Jonathan R | FIBK | Common Stock | Sale | -0.98% | $300,968 | $37.29 | -8,071 | 817,738 | 14 Sep 2026 | See Footnote |
| Scott Jonathan R | FIBK | Common Stock | Sale | -0.98% | $300,968 | $37.29 | -8,071 | 817,738 | 14 Sep 2026 | See Footnote |
| Scott Jonathan R | FIBK | Common Stock | Sale | -0.98% | $300,968 | $37.29 | -8,071 | 817,738 | 14 Sep 2026 | See Footnote |
| Jonathan R. Scott | FIBK | Common Stock | Sale | -0.98% | $300,968 | $37.29 | -8,071 | 817,738 | 14 Sep 2026 | See Footnote |
| Scott Jonathan R | FIBK | Common Stock | Sale | -2.01% | $626,881 | $37.03 | -16,929 | 825,809 | 11 Sep 2026 | See Footnote |
| Scott Jonathan R | FIBK | Common Stock | Sale | -2.01% | $626,881 | $37.03 | -16,929 | 825,809 | 11 Sep 2026 | See Footnote |
| Scott Jonathan R | FIBK | Common Stock | Sale | -2.01% | $626,881 | $37.03 | -16,929 | 825,809 | 11 Sep 2026 | See Footnote |
| Scott Jonathan R | FIBK | Common Stock | Sale | -2.01% | $626,881 | $37.03 | -16,929 | 825,809 | 11 Sep 2026 | See Footnote |
| Scott Jonathan R | FIBK | Common Stock | Sale | -2.01% | $626,881 | $37.03 | -16,929 | 825,809 | 11 Sep 2026 | See Footnote |
| Jonathan R. Scott | FIBK | Common Stock | Sale | -2.01% | $626,881 | $37.03 | -16,929 | 825,809 | 11 Sep 2026 | See Footnote |
| Scott Julie A | FIBK | Common Stock | Gift | -0.28% | -1,350 | 487,009 | 27 Jul 2026 | See Footnote | ||
| Scott Julie A | FIBK | Common Stock | Gift | -0.28% | -1,350 | 487,009 | 27 Jul 2026 | See Footnote | ||
| Scott Julie A | FIBK | Common Stock | Gift | -0.28% | -1,350 | 487,009 | 27 Jul 2026 | See Footnote | ||
| Scott Julie A | FIBK | Common Stock | Gift | -0.28% | -1,350 | 487,009 | 27 Jul 2026 | See Footnote | ||
| Julie A. Scott | FIBK | Common Stock | Gift | -0.28% | -1,350 | 487,009 | 27 Jul 2026 | See Footnote | ||
| Matthew John Ritter | FIBK | Common Stock | Award | 1,806 | 1,806 | 22 Jul 2026 | Direct | |||
| Brian Kevin Turner | FIBK | Common Stock | Award | 1,806 | 1,806 | 22 Jul 2026 | Direct | |||
| Scott Jonathan R | FIBK | Common Stock | Sale | -1.17% | $403,000 | $40.30 | -10,000 | 842,738 | 16 Jul 2026 | See Footnote |
| Scott Jonathan R | FIBK | Common Stock | Sale | -1.17% | $403,000 | $40.30 | -10,000 | 842,738 | 16 Jul 2026 | See Footnote |
| Scott Jonathan R | FIBK | Common Stock | Sale | -1.17% | $403,000 | $40.30 | -10,000 | 842,738 | 16 Jul 2026 | See Footnote |
| Scott Jonathan R | FIBK | Common Stock | Sale | -1.17% | $403,000 | $40.30 | -10,000 | 842,738 | 16 Jul 2026 | See Footnote |
| Scott Jonathan R | FIBK | Common Stock | Sale | -1.17% | $403,000 | $40.30 | -10,000 | 842,738 | 16 Jul 2026 | See Footnote |
| Jonathan R. Scott | FIBK | Common Stock | Sale | -1.17% | $403,000 | $40.30 | -10,000 | 842,738 | 16 Jul 2026 | See Footnote |
| Scott Julie A | FIBK | Common Stock | Sale | -2.98% | $539,500 | $35.97 | -15,000 | 488,359 | 18 Jun 2026 | See Footnote |
| Scott Julie A | FIBK | Common Stock | Sale | -2.98% | $539,500 | $35.97 | -15,000 | 488,359 | 18 Jun 2026 | See Footnote |
| Scott Julie A | FIBK | Common Stock | Sale | -2.98% | $539,500 | $35.97 | -15,000 | 488,359 | 18 Jun 2026 | See Footnote |
| Scott Julie A | FIBK | Common Stock | Sale | -2.98% | $539,500 | $35.97 | -15,000 | 488,359 | 18 Jun 2026 | See Footnote |
| Julie A. Scott | FIBK | Common Stock | Sale | -2.98% | $539,500 | $35.97 | -15,000 | 488,359 | 18 Jun 2026 | See Footnote |
| Scott Jonathan R | FIBK | Common Stock | Sale | -1.09% | $339,073 | $36.11 | -9,390 | 852,738 | 18 Jun 2026 | See Footnote |
| Scott Jonathan R | FIBK | Common Stock | Sale | -1.09% | $339,073 | $36.11 | -9,390 | 852,738 | 18 Jun 2026 | See Footnote |
| Scott Jonathan R | FIBK | Common Stock | Sale | -1.09% | $339,073 | $36.11 | -9,390 | 852,738 | 18 Jun 2026 | See Footnote |
| Scott Jonathan R | FIBK | Common Stock | Sale | -1.09% | $339,073 | $36.11 | -9,390 | 852,738 | 18 Jun 2026 | See Footnote |
| Scott Jonathan R | FIBK | Common Stock | Sale | -1.09% | $339,073 | $36.11 | -9,390 | 852,738 | 18 Jun 2026 | See Footnote |
| Jonathan R. Scott | FIBK | Common Stock | Sale | -1.09% | $339,073 | $36.11 | -9,390 | 852,738 | 18 Jun 2026 | See Footnote |
| Scott Jonathan R | FIBK | Common Stock | Sale | -0.52% | $163,305 | $36.29 | -4,500 | 862,128 | 17 Jun 2026 | See Footnote |
| Scott Jonathan R | FIBK | Common Stock | Sale | -0.52% | $163,305 | $36.29 | -4,500 | 862,128 | 17 Jun 2026 | See Footnote |
| Scott Jonathan R | FIBK | Common Stock | Sale | -0.52% | $163,305 | $36.29 | -4,500 | 862,128 | 17 Jun 2026 | See Footnote |
| Scott Jonathan R | FIBK | Common Stock | Sale | -0.52% | $163,305 | $36.29 | -4,500 | 862,128 | 17 Jun 2026 | See Footnote |
| Scott Jonathan R | FIBK | Common Stock | Sale | -0.52% | $163,305 | $36.29 | -4,500 | 862,128 | 17 Jun 2026 | See Footnote |
| Jonathan R. Scott | FIBK | Common Stock | Sale | -0.52% | $163,305 | $36.29 | -4,500 | 862,128 | 17 Jun 2026 | See Footnote |
| Scott Jonathan R | FIBK | Common Stock | Sale | -1.47% | $458,697 | $35.58 | -12,892 | 866,628 | 04 Jun 2026 | See Footnote |
| Scott Jonathan R | FIBK | Common Stock | Sale | -1.47% | $458,697 | $35.58 | -12,892 | 866,628 | 04 Jun 2026 | See Footnote |
* marks a reported price that did not pass the local price check.