Sioux Steel Company 401(k) Plan
What public Form 5500 filings show about the Sioux Steel Company 401(k) plan — and how to find and check your own account.
The Sioux Steel Company 401(k) on its latest Form 5500
Sioux Steel Company (EIN 46-0219627) reports SIOUX STEEL COMPANY 401(K) PROFIT SHARING PLAN on its most recent Form 5500, with $0 in plan assets across 0 active participants. Form 5500 is the annual report employers file with the U.S. Department of Labor for their retirement plans, and it’s public.
See the full Sioux Steel Company filing — schedules, fees, and providers.
Who runs the Sioux Steel Company 401(k)?
The plan’s recordkeeper — the firm that runs the website and statements where you check your balance, change contributions, and manage your account — is Principal, based on the plan’s Schedule C service-provider disclosure. That’s the login you use for your Sioux Steel Company 401(k).
Other service providers named on the filing (investment managers, trustees, auditors — not necessarily the recordkeeper): MORNINGSTAR INVESTMENT MANAGEMENT, MMA SECURITIES, ASCENSUS.
How to check your Sioux Steel Company 401(k)
- Log in to Principal’s participant portal (the site on your statements).
- Ask Sioux Steel Company HR or benefits for the recordkeeper name and enrollment link.
- Left the company? Your balance stays in the plan until you roll it over — see how to find a lost 401(k).

