Otter Tail Corporation 401(k) Plan: Login, Facts & Contact Information

Otter Tail Corporation 401(k) Plan Facts

Plan name
OTTER TAIL CORPORATION RETIREMENT SAVINGS
Plan type
401(k) with employer contributions and profit sharing
Plan sponsor
OTTER TAIL CORPORATION
Participants
3,874 (2,338 active employees)
Former employees with a balance
1,144
Plan assets
$411,073,574 at Dec 31, 2024
Average account balance
$121,547 across 3,382 accounts
Employer contributions
$8,724,791 in plan year 2024 (31% of all contributions)
Recordkeeper
Principal Life Insurance Company
Plan year
Jan 1, 2024 – Dec 31, 2024
Plan established
Jan 1, 1984
✓ Employer contributions✓ Automatic enrollment✓ Default investment for undecided participants✓ Participants choose their own investments— Self-directed brokerage window✓ Profit sharing— Company stock (ESOP)

Source: Form 5500 for plan year 2024 (Jan 1, 2024 – Dec 31, 2024), filed Oct 14, 2025. Public filing with the U.S. Department of Labor.

Money in and out in plan year 2024

  • $28.1 million went into the plan in contributions, $8.72 million of it from the employer (31%).
  • $42.9 million was paid out to participants.
  • Investment and other income added $54.7 million.
  • Administrative expenses were $337,914, about $100 per account.

How the Otter Tail Corporation 401(k) changed, 2019–2024

Plan yearParticipantsPlan assetsEmployer contributionsBenefits paid
20193,550$297.0 million$5.33 million$25.5 million
20203,501$341.5 million$5.45 million$26.3 million
20213,342$385.5 million$7.69 million$29.0 million
20223,715$323.2 million$7.57 million$20.6 million
20233,703$371.5 million$7.84 million$37.4 million
20243,874$411.1 million$8.72 million$42.9 million

Otter Tail Corporation 401(k) Contact Information

Phone
701-451-3582
Mailing address
4150 19TH AVE SOUTH SUITE 101, FARGO ND 58103
Plan sponsor
OTTER TAIL CORPORATION
Employer identification number (EIN)
27-0383995
Plan number
011

Questions about the Otter Tail Corporation 401(k)

Does Otter Tail Corporation contribute to the 401(k)?

Yes. The plan reports an employer contribution arrangement. In plan year 2024 the employer contributed $8.72 million, 31% of all contributions.

Does the Otter Tail Corporation 401(k) have automatic enrollment?

Yes. The plan reports automatic enrollment of eligible employees.

How many people are in the Otter Tail Corporation 401(k) plan?

3,874 participants at the start of plan year 2024, 2,338 of them active employees, and 1,144 former employees who still had money in the plan.

What is the average 401(k) balance at Otter Tail Corporation?

About $121,547 per account: $411.1 million in plan assets across 3,382 accounts with a balance at the end of plan year 2024.

Who manages the Otter Tail Corporation 401(k) accounts?

Principal (listed on the filing as PRINCIPAL LIFE INSURANCE COMPANY) is the plan's recordkeeper, which is where participants log in to see their balance.

I no longer work at Otter Tail Corporation. How do I access my 401(k)?

Your account stays with Principal after you leave, so you can log in with the same credentials. If your balance was small, the plan may have rolled it into an IRA in your name. If you can't find it, Beagle can locate it for you.

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