401(k) · DOL Form 5500 · 2022

First Interstate Bancsystem, Inc. 401(k) Plan

Data updated 2026-08-25

$426M
Total assets Above avg plan size
2,313
Participants Above avg headcount
98th
Percentile by assets National rank
$184,083
Avg per participant Above avg balance/head
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Official DOL plan name: First Interstate Bancsystem, Inc. 401(k) Plan · Sponsored by First Interstate Bancsystem, Inc. · Montana · Finance & Insurance

$426M in assets, 2,313 participants

First Interstate Bancsystem, Inc.'s First Interstate Bancsystem, Inc. 401(k) Plan reported $426M in total assets and 2,313 participants in its 2022 DOL Form 5500 filing, ranking in the 98th percentile by assets among filed plans. Figures are as reported by the plan sponsor to the Department of Labor, not audited or endorsed by PlainRetire.

  • #8,860 in Finance & Insurance (9,261 peers)

Coverage in Montana

First Interstate Bancsystem, Inc. 401(k) Plan covers 2,313 participants in Montana, 8.5x the typical Montana plan (state average ~271 per filing). Assets: $426M.

#8,860
in Finance & Insurance (9,261 peers)
+12.4%
assets growth YoY
4.3×
vs typical plan assets (national mean)

The plan reported a net loss of $99M for the year, a single-year figure driven by markets and benefit payments, not a measure of plan health.

First Interstate Bancsystem, Inc. 401(k) Plan's outsized position by total assets

First Interstate Bancsystem, Inc. 401(k) Plan vs every filed plan by assets

End-of-year total assets · plan year 2022 · DOL Form 5500

$425,784,366 Top 2% higher than 98% of 139,123 filed plans

This plan $0 $2,050,000,000 every filed plan with reported assets, bucketed by value

Dashed line + filled bar = this entry, among filed plans.

Source U.S. Department of Labor Form 5500 filings (EBSA) · plan year 2022

First Interstate Bancsystem, Inc. 401(k) Plan's large-plan peer group by participant headcount

Plan-year 2022 Form 5500 filings with a reported participant count, partitioned by headcount band, not by assets. First Interstate Bancsystem, Inc. 401(k) Plan lands in the large band (2,313 participants).

Published 5500 schedule card

Filing strip 810331430 · First Interstate Bancsystem, Inc. PY 2022 · 401(k)

First Interstate Bancsystem, Inc. 401(k) Plan · $426M · 2,313 · 98th

  • EBSA $426M
  • PART 2,313
  • TYPE 98th
  • NET 401(k)
  • BOOK near Stmicroelectronics, Inc. 401(k) Savings Plan
  • VS-ST ind #8860

Stamps derive from this plan's Form 5500 line items (assets, participants, type, EIN, cohort placement) - not a quality rating of the sponsor. Read with Finance & Insurance retirement plans → · Plans in Montana →

First Interstate Bancsystem, Inc. 401(k) Plan in the asset neighbourhood

Ashley Furniture Industries, LLC Profit Sharing 401(k) PlanAshley Furniture Industries,…$427MIrvine Company Unified Savings PlanIrvine Company Unified Savin…$426MStmicroelectronics, Inc. 401(k) Savings PlanStmicroelectronics, Inc. 401…$426MFirst Interstate Bancsystem, Inc. 401(k) PlanFirst Interstate Bancsystem,…$426MDanfoss USA Savings Plan$425M
End-of-year total assets ($M) among First Interstate Bancsystem, Inc. 401(k) Plan and nearest nationwide 401(k) peers. Source: DOL Form 5500 plan year 2022.

Montana filing particulars

Total Assets (Beginning of Year)$379M
Net Assets (End of Year)$426M
Net Income-$99M
Employer EIN810331430
Plan Effective Date1983-07-01
Filing StatusFILING RECEIVED

Sponsor Plan History (First Interstate Bancsystem, Inc.)

Sponsor-wide plan assets over time

All First Interstate Bancsystem, Inc. plans reported in each filing year

Latest sponsor-wide plan assets
$482M 13.140499151159531% vs 2022
2024 filing year
$420M$440M$460M$480M$500M 202220232024 $426M $482M ▲ +13.1%
Year Plans Participants Total Assets
2022 1 2,313 $426M
2023 1 3,750 $454M
2024 1 3,530 $482M

Nearby 401(k) Plans in Montana

Peer 401(k) plans, same state, same plan type, ranked by total assets.

First Interstate Bancsystem, Inc. 401(k) Plan vs. nearby 401(k) plans in Montana, assets vs. participants Scatter plot of 6 data points. 10002000300040005000 340360380400420440 Total assets ($M) Participants First Interstate Bancsystem, Inc. 401(k) Plan, Total assets ($M): 425.784366 · Participants: 2313First Interstate Bancsystem, Inc. 401(k) PlanD.a. Davidson Companies Retirement Savings and Profit Sharing Plan, Total assets ($M): 421.705773 · Participants: 1507D.a. Davidson Companies Retirement Savings and Profit Sharing PlanGlacier Bancorp, Inc. Profit Sharing and 401(k) Plan, Total assets ($M): 412.377455 · Participants: 3272Glacier Bancorp, Inc. Profit Sharing and 401(k) PlanNorthwestern Energy 401(k) Retirement Savings Plan, Total assets ($M): 405.510912 · Participants: 1494Northwestern Energy 401(k) Retirement Savings PlanLogan Health Retirement Savings Plan, Total assets ($M): 358.733064 · Participants: 4055Logan Health Retirement Savings PlanWashington Companies 401(k) Retirement Savings Plan, Total assets ($M): 351.97038 · Participants: 2223Washington Companies 401(k) Retirement Savings Plan
First Interstate Bancsystem, Inc. 401(k) Plan vs. nearby 401(k) plans in Montana, assets vs. participants
Compare First Interstate Bancsystem, Inc. 401(k) Plan side-by-side with 3 peers →

First Interstate Bancsystem, Inc. 401(k) Plan's out-of-state 401(k) peers by assets and headcount

Outside Montana, the nearest 401(k) by assets is Stmicroelectronics, Inc. 401(k) Savings Plan in TX ($426M); by covered participants it is Fellowship of Christian Athletes Retirement/401(k) Plan in MO (2,313 participants). Same-state nearby plans are listed separately above.

Closest by plan assets

Nearest other-state filings by tot_assets_eoy ($426M here).

Similar participant headcount

Nearest other-state filings by covered participants (2,313 participants); asset peers above are excluded.

DOL Form 5500 plan year 2022. Asset totals can differ widely at the same headcount; neither axis is a quality rating.

Frequently Asked Questions

How did First Interstate Bancsystem, Inc. 401(k) Plan assets move in 2022? ▼
First Interstate Bancsystem, Inc. 401(k) Plan grew at a solid clip - up 12.4% during 2022, from $379M to $426M. Reported net income was -$99M.
How have First Interstate Bancsystem, Inc. plan assets changed over time? ▼
Across 3 plan years on file (2022-2024), First Interstate Bancsystem, Inc.'s sponsor-wide assets grew 13.1%, from $426M to $482M.
Where does First Interstate Bancsystem, Inc. 401(k) Plan rank by assets among Form 5500 filers? ▼
First Interstate Bancsystem, Inc. 401(k) Plan ranks in the 98th percentile by end-of-year assets among 139,126 plans that reported assets for plan year 2022 (in the top 5% of all filed plans by assets).
Which 401(k) plans are similar in size to First Interstate Bancsystem, Inc. 401(k) Plan? ▼
Among 401(k) plans in other states, the closest by assets is Stmicroelectronics, Inc. 401(k) Savings Plan in TX ($426M, 774 participants).
Which 401(k) plans cover a similar participant headcount to First Interstate Bancsystem, Inc. 401(k) Plan? ▼
Among 401(k) plans in other states, the closest by covered participants is Fellowship of Christian Athletes Retirement/401(k) Plan in MO (2,313 participants, $80M in assets).

Source: U.S. Department of Labor, Employee Benefits Security Administration (EBSA), Form 5500 public disclosure dataset. Plan year 2022.

Source: DOL EFAST2 filing system (efast.dol.gov) - original filing retrieval by EIN 810331430.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from U.S. Department of Labor Form 5500 filings (EBSA). See our methodology for details.