Find an old 401(k) · Free

Core Laboratories LP: who to call about your old retirement account

Core Laboratories Profit Sharing and Retirement Plan for Employees In Puerto Rico. GUAYANILLA, PR. From the plan’s 2025 filing with the U.S. Department of Labor.

Good news: this plan is still running.

It filed for 2025, so if you left money in it, the account should still be there under your name. One phone call usually finds it.

Is this your plan?

From the plan’s public filings. Check that it sounds like the place you worked.

Employer: Core Laboratories LP
Address on file: Rd 127 Km 11.7 · Guayanilla, PR · 00656
Industry: Mining, Quarrying, Oil & Gas
Plan: Core Laboratories Profit Sharing and Retirement Plan for Employees In Puerto RicoProfit-sharing plan
When: Start date on the filing: 2011 (some plans give the date of their latest rewrite, so it may be older)Still running: latest filing is for 2025Has filed since 2011
Size: 27 people in the plan, about $1.5 million in total11 of them no longer work there and still have money in it. Leaving a balance behind is common.

Not the right one? Core Laboratories LP has another retirement plan:

Core Laboratories Profit Sharing and Retirement Plan · 401(k) plan · about 1,100 people · filed 2025

Doesn’t sound like it? Search again. Try the company’s legal name, or the name it had when you worked there.

Get this plan’s contact details, free

Tell us where to send them and we’ll email you a link that opens:

✓ The phone number on the plan’s filing
✓ What to say on the call, word for word
✓ The plan ID numbers they will ask you for

If nobody can find you

These official and non-profit registries are free:

DOL Abandoned Plan Search ↗
plans wound down by a custodian after the employer walked away
DOL Retirement Savings Lost & Found ↗
the Department of Labor’s registry of accounts owed to former participants
National Registry of Unclaimed Retirement Benefits ↗
employers and plan administrators list balances they could not deliver
Your state’s unclaimed property office ↗
uncashed distribution checks often end up here

Want a licensed advisor to help?

Optional, free, and no obligation. An advisor can help you track the account down, then roll it into an IRA or your current employer’s plan and keep it invested. You do not need this to use anything above.

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401kHunter is not affiliated with, endorsed by, or connected to CORE LABORATORIES LP. Plan figures on this page come from public U.S. Department of Labor Form 5500 filings and reflect the plan’s final reported year. This page is educational and is not investment, tax, or legal advice.