Lawrence Livermore National Security Llc 401(k) Plan: Login, Facts & Contact Information

Lawrence Livermore National Security Llc 401(k) Plan Facts

Plan name
LLNS 401(K) RETIREMENT PLAN
Plan type
401(k) with employer contributions and profit sharing
Plan sponsor
LAWRENCE LIVERMORE NATIONAL SECURITY LLC
Participants
10,466 (8,437 active employees)
Former employees with a balance
2,386
Plan assets
$2,498,475,873 at Dec 31, 2024
Average account balance
$231,383 across 10,798 accounts
Employer contributions
$124,004,397 in plan year 2024 (44% of all contributions)
Recordkeeper
Fidelity Investments Institutional
Plan year
Jan 1, 2024 – Dec 31, 2024
Plan established
Oct 1, 2007
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 Sep 30, 2025. Public filing with the U.S. Department of Labor.

Money in and out in plan year 2024

  • $282.8 million went into the plan in contributions, $124.0 million of it from the employer (44%).
  • $123.6 million was paid out to participants.
  • Investment and other income added $294.2 million.
  • Administrative expenses were $697,064, about $65 per account.

How the Lawrence Livermore National Security Llc 401(k) changed, 20192024

Plan yearParticipantsPlan assetsEmployer contributionsBenefits paid
20196,221$1.20 billion$60.0 million$53.2 million
20207,034$1.47 billion$69.5 million$68.4 million
20218,144$1.80 billion$79.4 million$77.3 million
20228,626$1.61 billion$88.9 million$101.0 million
20239,768$2.05 billion$106.8 million$109.7 million
202410,466$2.50 billion$124.0 million$123.6 million

Lawrence Livermore National Security Llc 401(k) Contact Information

Phone
925-423-8452
Mailing address
7000 EAST AVENUE L640, LIVERMORE CA 94550
Plan sponsor
LAWRENCE LIVERMORE NATIONAL SECURITY LLC
Plan administrator
LLNS BENEFITS AND INVESTMENT COMMITTEE
Employer identification number (EIN)
20-5624386
Plan number
001

Questions about the Lawrence Livermore National Security Llc 401(k)

Does Lawrence Livermore National Security Llc contribute to the 401(k)?

Yes. The plan reports an employer contribution arrangement. In plan year 2024 the employer contributed $124.0 million, 44% of all contributions.

Does the Lawrence Livermore National Security Llc 401(k) have automatic enrollment?

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

How many people are in the Lawrence Livermore National Security Llc 401(k) plan?

10,466 participants at the start of plan year 2024, 8,437 of them active employees, and 2,386 former employees who still had money in the plan.

What is the average 401(k) balance at Lawrence Livermore National Security Llc?

About $231,383 per account: $2.50 billion in plan assets across 10,798 accounts with a balance at the end of plan year 2024.

Who manages the Lawrence Livermore National Security Llc 401(k) accounts?

Fidelity NetBenefits (listed on the filing as FIDELITY INVESTMENTS INSTITUTIONAL) is the plan's recordkeeper, which is where participants log in to see their balance.

I no longer work at Lawrence Livermore National Security Llc. How do I access my 401(k)?

Your account stays with Fidelity NetBenefits 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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