First Interstate BancSystem, Inc.
US ˙ NasdaqGS ˙ US32055Y2019

SecurityFIBK / First Interstate BancSystem, Inc.
InstitutionCwm, Llc
Latest Disclosed Ownership33,992 shares
Latest Disclosed Value $ 1,135,337
Cwm, Llc reports 0.53% decrease in ownership of FIBK / First Interstate BancSystem, Inc.

On May 14, 2026 - Cwm, Llc filed a 13F-HR form disclosing ownership of 33,992 shares of First Interstate BancSystem, Inc. (US:FIBK) valued at $1,135,333 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 26, 2026 disclosing 34,174 shares of First Interstate BancSystem, Inc.. This represents a change in shares of -0.53% during the quarter. The current value of the position is $1,166,605 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-14 2026-03-31 13F FIRST INTST BANCSYSTEM COM 32055Y201 33,992 -182 -0.53 1,135 113,400.00 0.0030
2026-01-26 2025-12-31 13F FIRST INTST BANCSYSTEM COM 32055Y201 34,174 202 0.59 1 0.00 0.0032
2025-10-15 2025-09-30 13F FIRST INTST BANCSYSTEM COM 32055Y201 33,972 2,059 6.45 1 0.0033
2025-07-25 2025-06-30 13F FIRST INTST BANCSYSTEM COM 32055Y201 31,913 1,481 4.87 1 0.0032
2025-05-01 2025-03-31 13F FIRST INTST BANCSYSTEM COM 32055Y201 30,432 -245 -0.80 1 0.0035
2025-02-04 2024-12-31 13F FIRST INTST BANCSYSTEM COM 32055Y201 30,677 25,525 495.44 1 0.0041
2024-10-08 2024-09-30 13F FIRST INTST BANCSYSTEM COM 32055Y201 5,152 2,029 64.97 0 0.0007
2024-07-10 2024-06-30 13F FIRST INTST BANCSYSTEM COM 32055Y201 3,123 430 15.97 0 0.0004
2024-04-05 2024-03-31 13F FIRST INTST BANCSYSTEM COM 32055Y201 2,693 325 13.72 0 0.0004
2024-02-01 2023-12-31 13F FIRST INTST BANCSYSTEM COM 32055Y201 2,368 702 42.14 0 0.0004
2023-10-11 2023-09-30 13F FIRST INTST BANCSYSTEM COM 32055Y201 1,666 35 2.15 0 0.0003
2023-08-03 2023-06-30 13F FIRST INTST BANCSYSTEM COM 32055Y201 1,631 921 129.72 0 0.0002
2023-05-01 2023-03-31 13F FIRST INTST BANCSYSTEM COM CL A 32055Y201 710 -238 -25.11 0 0.0001
2023-02-01 2022-12-31 13F FIRST INTST BANCSYSTEM COM CL A 32055Y201 948 4 0.42 0 -100.00 0.0003
2022-10-27 2022-09-30 13F FIRST INTST BANCSYSTEM COM CL A 32055Y201 944 0 0.00 38 5.56 0.0003
2022-07-28 2022-06-30 13F FIRST INTST BANCSYSTEM COM CL A 32055Y201 944 306 47.96 36 56.52 0.0003
2022-04-21 2022-03-31 13F FIRST INTST BANCSYSTEM COM CL A 32055Y201 638 635 21,166.67 23 0.0002
2022-01-31 2021-12-31 13F FIRST INTST BANCSYSTEM COM CL A 32055Y201 3 0 0.00 0 0.0000
2021-09-15 2021-06-30 13F/A-1 FIRST INTST BANCSYSTEM COM CL A 32055Y201 3 0 0.00 0 0.0000
2021-07-29 2021-06-30 13F FIRST INTST BANCSYSTEM COM CL A 32055Y201 3 0 0 0.0000
2021-09-15 2021-03-31 13F/A-1 FIRST INTST BANCSYSTEM COM CL A 32055Y201 3 0 0.00 0 0.0000
2021-04-27 2021-03-31 13F FIRST INTST BANCSYSTEM COM CL A 32055Y201 3 0 0 0.0000
2021-09-15 2020-12-31 13F/A-1 FIRST INTST BANCSYSTEM COM CL A 32055Y201 3 0 0.00 0 0.0000
2021-01-27 2020-12-31 13F FIRST INTST BANCSYSTEM COM CL A 32055Y201 3 0 0 0.0000
2021-09-15 2020-09-30 13F/A-1 FIRST INTST BANCSYSTEM COM CL A 32055Y201 3 0 0.00 0 0.0000
2020-10-19 2020-09-30 13F FIRST INTST BANCSYSTEM COM CL A 32055Y201 3 0 0 0.0000
2021-09-15 2020-06-30 13F/A-1 FIRST INTST BANCSYSTEM COM CL A 32055Y201 3 0 0.00 0 0.0000
2020-07-22 2020-06-30 13F FIRST INTST BANCSYSTEM COM CL A 32055Y201 3 0 0 0.0000
2021-09-15 2020-03-31 13F/A-1 FIRST INTST BANCSYSTEM COM CL A 32055Y201 3 0 0.00 0 0.0000
2020-04-28 2020-03-31 13F FIRST INTST BANCSYSTEM COM CL A 32055Y201 3 0 0 0.0000
2021-09-14 2019-12-31 13F/A-1 FIRST INTST BANCSYSTEM COM CL A 32055Y201 3 0 0.00 0 0.0000
2021-09-14 2019-09-30 13F/A-1 FIRST INTST BANCSYSTEM COM CL A 32055Y201 3 0 0.00 0 0.0000
2021-09-14 2019-06-30 13F/A-1 FIRST INTST BANCSYSTEM COM CL A 32055Y201 3 0 0.00 0 0.0000
2021-09-02 2019-03-31 13F/A-1 FIRST INTST BANCSYSTEM COM CL A 32055Y201 3 3 0 0.0000
2018-10-29 2018-09-30 13F FIRST INTST BANCSYSTEM COM CL A 32055Y201 0 -24 -100.00 0 -100.00
2018-07-31 2018-06-30 13F FIRST INTST BANCSYSTEM COM CL A 32055Y201 24 24 1 0.0000
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.