First Interstate Bancsystem 401(k) plan

First Interstate Bancsystem, Inc., Billings, MT. EIN 81-0331430. Annual reports 2009–2024. Also filed as First Interstate Bancsystem Inc.

First Interstate Bancsystem, Inc. has one active retirement plan on file, the First Interstate Bancsystem, Inc. 401(k) Plan, with 4,990 participants and $482 million in assets in 2024. Fidelity has been its recordkeeper since 2017. No traditional pension plan appears in First Interstate Bancsystem's filings since 2009.

Active plans: 1
Participants: 4,990
Plan assets: $482 million
401(k) recordkeeper: Fidelity
Plans on file: 1
Industry: Finance and insurance

The plan

First Interstate Bancsystem, Inc. 401(k) Plan

401(k)Active

Active. The plan filed its annual report for the 2024 plan year.

Plan number: 003Employer EIN 81-0331430
Participants (2024): 4,990
Net assets (2024): $482 million
Recordkeeper: Fidelity2017–2024
Plan administrator: First Interstate Bancsystem, Inc.
P O Box 30918
Billings, MT 59116
(406) 255-5375As filed for 2024
In effect since: July 1, 1983

Plans merged into this one: Great Western Bancorp, Inc 401(k) Contribution Plan and Trust (2022).

Earlier plan names: Savings & Profit Sharing Plan for Employees of First Interstate Bancsystem Inc.

Year by year, 2009 to 2024

Plan year	Participants	Net assets	Recordkeeper
2024	4,990	$482 million	Fidelity
2023	5,188	$454 million	Fidelity
2022	5,283	$426 million	Fidelity
2021	3,249	$379 million	Fidelity
2020	3,222	$353 million	Fidelity
2019	3,186	$305 million	Fidelity
2018	3,026	$261 million	Fidelity
2017	2,809	$277 million	Fidelity
2016	2,083	$228 million	not listed
2015	2,079	$209 million	not listed
2014	2,026	$215 million	not listed
2013	1,957	$209 million	not listed
2012	2,039	$175 million	not listed
2011	2,029	$152 million	not listed
2010	2,067	$158 million	not listed
2009	2,090	$141 million	not listed

If you had money in one of these plans

Call Fidelity (fidelity.com), which runs the First Interstate Bancsystem, Inc. 401(k) Plan. With your Social Security number and the plan name, it can tell you whether you still have a balance and, if not, where it went.
Or call the plan administrator listed on the plan below ((406) 255-5375). That number was filed for 2024; ask for the benefits or retirement plan office.
Still stuck? The Department of Labor's benefits advisers help for free: askebsa.dol.gov or 1-866-444-3272. Never pay anyone to find your own money.

What these numbers are

They come from the Form 5500 annual reports each plan files with the Department of Labor, as the plan filed them. A plan year is usually a calendar year.
Participants counts everyone in the plan at year end: current employees, former employees who still have a balance or a pension coming, and retirees or beneficiaries being paid.
The recordkeeper is the service provider whose Schedule C entry says it keeps the plan's records. Small plans do not file Schedule C, so some plans show none.
We cannot see anyone's account. Only the plan or its recordkeeper can tell you your balance.

Sources: U.S. Department of Labor, Form 5500 datasets and PBGC trusteed plans. How we read them.

The plan

First Interstate Bancsystem, Inc. 401(k) Plan

If you had money in one of these plans

What these numbers are

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