Plumbers & Steamfitters Local 434 Local 434 401(k) Plan: Login, Facts & Contact Information

Plumbers & Steamfitters Local 434 Local 434 401(k) Plan Facts

Plan name
PLUMBERS & STEAMFITTERS LOCAL 434 AND MCA SUPPLEMENTAL 401K
Plan type
401(k) and profit sharing
Plan sponsor
PLUMBERS & STEAMFITTERS LOCAL 434 LOCAL 434
Participants
1,717 (1,748 active employees)
Former employees with a balance
2
Plan assets
$115,423,517 at Dec 31, 2024
Average account balance
$90,528 across 1,275 accounts
Employer contributions
$7,892,035 in plan year 2024 (81% of all contributions)
Recordkeeper
Milliman
Plan year
Jan 1, 2024 – Dec 31, 2024
Plan established
Oct 1, 1998
— 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 13, 2025. Public filing with the U.S. Department of Labor.

Money in and out in plan year 2024

  • $9.78 million went into the plan in contributions, $7.89 million of it from the employer (81%).
  • $5.78 million was paid out to participants.
  • Investment and other income added $8.61 million.
  • Administrative expenses were $277,549, about $218 per account.

How the Plumbers & Steamfitters Local 434 Local 434 401(k) changed, 2019–2024

Plan yearParticipantsPlan assetsEmployer contributionsBenefits paid
20191,085$74.8 million$4.17 million$2.82 million
20201,315$85.7 million$4.66 million$3.62 million
20211,562$96.9 million$4.74 million$5.16 million
20221,671$88.9 million$5.39 million$4.58 million
20231,726$103.1 million$6.45 million$5.08 million
20241,717$115.4 million$7.89 million$5.78 million

Plumbers & Steamfitters Local 434 Local 434 401(k) Contact Information

Phone
715-692-4341
Mailing address
912 NORTH VIEW DRIVE, MOSINEE WI 54455
Plan sponsor
PLUMBERS & STEAMFITTERS LOCAL 434 LOCAL 434
Plan administrator
WILSON-MCSHANE CORPORATION
Employer identification number (EIN)
39-1905166
Plan number
001

Questions about the Plumbers & Steamfitters Local 434 Local 434 401(k)

Does Plumbers & Steamfitters Local 434 Local 434 contribute to the 401(k)?

The plan does not report an employer matching arrangement on its Form 5500. It did report $7.89 million in employer contributions for plan year 2024.

Does the Plumbers & Steamfitters Local 434 Local 434 401(k) have automatic enrollment?

No. The plan does not report automatic enrollment; employees enroll themselves.

How many people are in the Plumbers & Steamfitters Local 434 Local 434 401(k) plan?

1,717 participants at the start of plan year 2024, 1,748 of them active employees, and 2 former employees who still had money in the plan.

What is the average 401(k) balance at Plumbers & Steamfitters Local 434 Local 434?

About $90,528 per account: $115.4 million in plan assets across 1,275 accounts with a balance at the end of plan year 2024.

Who manages the Plumbers & Steamfitters Local 434 Local 434 401(k) accounts?

Milliman is the plan's recordkeeper, which is where participants log in to see their balance.

I no longer work at Plumbers & Steamfitters Local 434 Local 434. How do I access my 401(k)?

Your account stays with Milliman 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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