First Interstate BancSystem, Inc.
US ˙ NasdaqGS ˙ US32055Y2019

SecurityFIBK / First Interstate BancSystem, Inc.
InstitutionSignaturefd, Llc
Latest Disclosed Ownership6,864 shares
Latest Disclosed Value $ 229,258
Signaturefd, Llc reports 0.15% increase in ownership of FIBK / First Interstate BancSystem, Inc.

On April 7, 2026 - Signaturefd, Llc filed a 13F-HR form disclosing ownership of 6,864 shares of First Interstate BancSystem, Inc. (US:FIBK) valued at $229,258 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 20, 2026 disclosing 6,854 shares of First Interstate BancSystem, Inc.. This represents a change in shares of 0.15% during the quarter. The current value of the position is $244,152 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)
2026-04-07 2026-03-31 13F FIRST INTST BANCSYSTEM COM 32055Y201 6,864 10 0.15 229 -3.38 0.0035
2026-01-20 2025-12-31 13F FIRST INTST BANCSYSTEM COM 32055Y201 6,854 38 0.56 237 9.22 0.0036
2025-10-21 2025-09-30 13F FIRST INTST BANCSYSTEM COM 32055Y201 6,816 257 3.92 217 14.81 0.0034
2025-07-16 2025-06-30 13F FIRST INTST BANCSYSTEM COM 32055Y201 6,559 164 2.56 189 3.28 0.0032
2025-05-02 2025-03-31 13F FIRST INTST BANCSYSTEM COM 32055Y201 6,395 -589 -8.43 183 -19.03 0.0035
2025-02-10 2024-12-31 13F FIRST INTST BANCSYSTEM COM 32055Y201 6,984 275 4.10 227 10.24 0.0043
2024-10-21 2024-09-30 13F FIRST INTST BANCSYSTEM COM 32055Y201 6,709 53 0.80 206 11.41 0.0039
2024-07-29 2024-06-30 13F FIRST INTST BANCSYSTEM COM 32055Y201 6,656 90 1.37 185 3.37 0.0038
2024-05-03 2024-03-31 13F FIRST INTST BANCSYSTEM COM 32055Y201 6,566 358 5.77 179 -6.32 0.0038
2024-02-01 2023-12-31 13F FIRST INTST BANCSYSTEM COM 32055Y201 6,208 2,322 59.75 191 97.92 0.0044
2023-11-03 2023-09-30 13F FIRST INTST BANCSYSTEM COM 32055Y201 3,886 700 21.97 97 28.00 0.0025
2023-08-01 2023-06-30 13F FIRST INTST BANCSYSTEM COM 32055Y201 3,186 1,125 54.59 76 22.95 0.0019
2023-04-28 2023-03-31 13F FIRST INTST BANCSYSTEM COM CL A 32055Y201 2,061 485 30.77 62 1.67 0.0017
2023-01-30 2022-12-31 13F FIRST INTST BANCSYSTEM COM CL A 32055Y201 1,576 0 0.00 61 -6.25 0.0018
2022-11-08 2022-09-30 13F FIRST INTST BANCSYSTEM COM CL A 32055Y201 1,576 0 0.00 64 6.67 0.0022
2022-08-10 2022-06-30 13F FIRST INTST BANCSYSTEM COM CL A 32055Y201 1,576 -523 -24.92 60 -22.08 0.0020
2022-05-02 2022-03-31 13F FIRST INTST BANCSYSTEM COM CL A 32055Y201 2,099 1,922 1,085.88 77 1,000.00 0.0023
2022-01-25 2021-12-31 13F FIRST INTST BANCSYSTEM COM CL A 32055Y201 177 50 39.37 7 40.00 0.0002
2021-10-28 2021-09-30 13F FIRST INTST BANCSYSTEM COM CL A 32055Y201 127 -57 -30.98 5 -37.50 0.0002
2021-07-26 2021-06-30 13F FIRST INTST BANCSYSTEM COM CL A 32055Y201 184 9 5.14 8 0.00 0.0003
2021-04-30 2021-03-31 13F FIRST INTST BANCSYSTEM COM CL A 32055Y201 175 -3 -1.69 8 14.29 0.0004
2021-02-11 2020-12-31 13F FIRST INTST BANCSYSTEM COM CL A 32055Y201 178 67 60.36 7 75.00 0.0003
2020-11-03 2020-09-30 13F FIRST INTST BANCSYSTEM COM CL A 32055Y201 111 -113 -50.45 4 -42.86 0.0002
2020-07-30 2020-06-30 13F FIRST INTST BANCSYSTEM COM CL A 32055Y201 224 224 7 0.0004
2020-04-23 2020-03-31 13F FIRST INTST BANCSYSTEM COM CL A 32055Y201 0 -59 -100.00 0 -100.00
2020-02-05 2019-12-31 13F FIRST INTST BANCSYSTEM COM CL A 32055Y201 59 59 2 0.0001
2019-02-13 2018-12-31 13F FIRST INTST BANCSYSTEM COM CL A 32055Y201 0 -5 -100.00 0 0.0000
2018-11-14 2018-09-30 13F FIRST INTST BANCSYSTEM COM CL A 32055Y201 5 0 0.00 0 0.0000
2018-08-14 2018-06-30 13F FIRST INTST BANCSYSTEM COM CL A 32055Y201 5 0 0.00 0 0.0000
2018-05-08 2018-03-31 13F FIRST INTST BANCSYSTEM COM CL A 32055Y201 5 5 0 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.