Regeneron Pharmaceuticals, Inc. 401(k) Plan: Login, Facts & Contact Information

Regeneron Pharmaceuticals, Inc. 401(k) Plan Facts

Plan name
REGENERON PHARMACEUTICALS, INC. 401(K) SAVINGS PLAN
Plan type
401(k) with employer contributions and profit sharing
Plan sponsor
REGENERON PHARMACEUTICALS, INC.
Participants
12,787 (11,960 active employees)
Former employees with a balance
2,033
Plan assets
$2,606,002,109 at Dec 31, 2024
Average account balance
$187,698 across 13,884 accounts
Employer contributions
$79,081,635 in plan year 2024 (24% of all contributions)
Recordkeeper
Fidelity Investments Institutional
Plan year
Jan 1, 2024 – Dec 31, 2024
Plan established
Jan 1, 1993
✓ 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 17, 2025. Public filing with the U.S. Department of Labor.

Money in and out in plan year 2024

  • $328.3 million went into the plan in contributions, $79.1 million of it from the employer (24%).
  • $98.7 million was paid out to participants.
  • Investment and other income added $129.2 million.
  • Administrative expenses were $546,099, about $39 per account.

How the Regeneron Pharmaceuticals, Inc. 401(k) changed, 2019–2024

Plan yearParticipantsPlan assetsEmployer contributionsBenefits paid
20197,397$949.7 million$41.7 million$40.6 million
20208,153$1.30 billion$44.5 million$63.3 million
20218,959$1.71 billion$51.4 million$67.3 million
202210,065$1.69 billion$61.8 million$80.9 million
202311,675$2.25 billion$73.4 million$80.5 million
202412,787$2.61 billion$79.1 million$98.7 million

Regeneron Pharmaceuticals, Inc. 401(k) Contact Information

Phone
914-847-7400
Mailing address
777 OLD SAW MILL RIVER ROAD, TARRYTOWN NY 10591
Plan sponsor
REGENERON PHARMACEUTICALS, INC.
Employer identification number (EIN)
13-3444607
Plan number
001

Questions about the Regeneron Pharmaceuticals, Inc. 401(k)

Does Regeneron Pharmaceuticals, Inc contribute to the 401(k)?

Yes. The plan reports an employer contribution arrangement. In plan year 2024 the employer contributed $79.1 million, 24% of all contributions.

Does the Regeneron Pharmaceuticals, Inc 401(k) have automatic enrollment?

Yes. The plan reports automatic enrollment of eligible employees.

How many people are in the Regeneron Pharmaceuticals, Inc 401(k) plan?

12,787 participants at the start of plan year 2024, 11,960 of them active employees, and 2,033 former employees who still had money in the plan.

What is the average 401(k) balance at Regeneron Pharmaceuticals, Inc?

About $187,698 per account: $2.61 billion in plan assets across 13,884 accounts with a balance at the end of plan year 2024.

Who manages the Regeneron Pharmaceuticals, Inc 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 Regeneron Pharmaceuticals, Inc. 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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