Find an old Mammoet USA South 401(k)

Who to contact about an account in the Mammoet USA South plan, from the filings. Free, no sign-up, no Social Security number.

Mammoet USA South, Inc. 401(k) Profit Sharing Plan and Trust

Mammoet USA South, Inc. · Plan 002 · EIN 76-0294739 · Rosharon, TX

Active · plan year 2025 filing401(k)
Plan administratorMammoet USA South, Inc.
20525 Fm Rd 521, Rosharon, TX 77583
Form 5500 ↗
Recordkeeper (who holds the accounts)Empower Annuity Insurance CompanySchedule C ↗
Former employees with balances167 separated participants still had money in the planForm 5500 ↗

Mammoet USA South 401(k) match, vesting and fees →

Found it? Your options

Leave itOften allowed if your balance is over $7,000. You keep the plan's investments and fees.
Move it to your new job's planIf the new plan accepts roll-ins. Ask the new plan's recordkeeper.
Roll it into an IRAMore investment choices, and you control it. A direct rollover avoids withholding and penalties.
Cash outUsually taxed, plus a 10% penalty if you are under 59½.

General information, not financial or tax advice. Rules depend on your plan and situation.

How to track down the account

  1. Call the plan administrator or recordkeeper listed on the filing. Have your name, Social Security number and dates of employment ready.
  2. If the plan terminated, ask the administrator where balances went (another plan, an IRA provider, or a state unclaimed-property office).
  3. Over 65? Also check the Department of Labor's Retirement Savings Lost and Found database.

Common questions

How do I find my old Mammoet USA South 401(k)?

Contact the plan administrator listed on the plan's Form 5500 filing: Mammoet USA South, Inc., (281) 369-2200. The accounts are held by the recordkeeper, Empower Annuity Insurance Company. Have your Social Security number and dates of employment ready.

What is the Mammoet USA South 401(k) phone number?

The plan administrator phone number on the plan year 2025 filing is (281) 369-2200.

Contacts are as filed on each plan's latest Form 5500 and may be out of date. PlanFacts is not affiliated with Mammoet USA South and does not hold accounts. Not financial advice. Report a correction