Merck 401(k) and pension plans

Merck & Co., Inc., Rahway, NJ. EIN 22-1918501. Annual reports 2009–2025.

Merck & Co., Inc. has 4 active retirement plans on file. The largest is the Merck US Savings Plan, with 40,442 participants and $16.1 billion in assets in 2025. Fidelity has been its recordkeeper since 2019.

Active plans: 4
Participants: 120,651
Plan assets: $27.5 billion
401(k) recordkeeper: Fidelity
Plans on file: 4
Industry: Manufacturing

All 4 plans

Active plans first

Merck US Savings Plan

401(k) with ESOPActive

Active. The plan filed its annual report for the 2025 plan year.

Plan number: 001Employer EIN 22-1918501
Participants (2025): 40,442
Net assets (2025): $16.1 billion
Recordkeeper: Fidelity2019–2025
Plan administrator: Merck Sharp & Dohme LLC
126 East Lincoln Avenue, P.O. Box 2000
Rahway, NJ 07065
(732) 594-4000As filed for 2025
In effect since: July 1, 1959

Plans merged into this one: Schering-Plough Employees' Savings Plan (2012); Retirement Savings Plan for the Organon Biosciences U S Affiliates (2012).

Earlier plan names: MSD Employee Savings & Security Plan.

Year by year, 2009 to 2025

Plan year	Participants	Net assets	Recordkeeper
2025	40,442	$16.1 billion	Fidelity
2024	41,241	$15.0 billion	Fidelity
2023	40,572	$13.4 billion	Fidelity
2022	39,764	$11.5 billion	Fidelity
2021	38,753	$13.6 billion	Fidelity
2020	37,752	$12.4 billion	Fidelity
2019	36,646	$11.0 billion	Fidelity
2018	36,031	$9.0 billion	not listed
2017	35,349	$9.5 billion	not listed
2016	35,131	$8.2 billion	not listed
2015	35,637	$7.8 billion	not listed
2014	37,396	$8.1 billion	not listed
2013	41,295	$8.2 billion	not listed
2012	43,825	$6.9 billion	not listed
2011	30,994	$4.1 billion	not listed
2010	31,617	$4.1 billion	not listed
2009	32,375	$3.6 billion	not listed

MSD Employee Stock Purchase & Savings Plan

401(k) with ESOPActive

Active. The plan filed its annual report for the 2025 plan year.

Plan number: 004Employer EIN 22-1918501
Participants (2025): 2,487
Net assets (2025): $602 million
Recordkeeper: Fidelity2019–2025
Plan administrator: Merck Sharp & Dohme LLC
126 East Lincoln Avenue, P.O. Box 2000
Rahway, NJ 07065
(732) 594-4000As filed for 2025
In effect since: July 1, 1983

Year by year, 2009 to 2025

Plan year	Participants	Net assets	Recordkeeper
2025	2,487	$602 million	Fidelity
2024	2,586	$545 million	Fidelity
2023	2,649	$499 million	Fidelity
2022	2,960	$463 million	Fidelity
2021	3,074	$540 million	Fidelity
2020	2,861	$502 million	Fidelity
2019	2,663	$463 million	Fidelity
2018	2,699	$386 million	not listed
2017	2,631	$423 million	not listed
2016	2,932	$432 million	not listed
2015	3,477	$399 million	not listed
2014	3,691	$405 million	not listed
2013	4,392	$424 million	not listed
2012	5,978	$358 million	not listed
2011	5,859	$319 million	not listed
2010	5,948	$317 million	not listed
2009	5,736	$281 million	not listed

Merck US Pension Plan

Cash balance pensionActive

Active. The plan filed its annual report for the 2024 plan year.

Plan number: 003Employer EIN 22-1918501
Participants (2024): 71,380
Net assets (2024): $10.1 billion
Plan administrator: Merck Sharp & Dohme LLC
126 East Lincoln Avenue, P.O. Box 2000
Rahway, NJ 07065
(732) 594-4000As filed for 2024
In effect since: January 1, 1956

Plans merged into this one: Legacy Schering-Plough Retirement Plan (2014); Retirement Account Plan for the Organon Biosciences US Affiliates (2014).

Earlier plan names: Retirement Plan for the Salaried Employees of MSD.

Year by year, 2009 to 2024

Plan year	Participants	Net assets	Recordkeeper
2024	71,380	$10.1 billion	not listed
2023	70,716	$10.2 billion	not listed
2022	69,837	$9.6 billion	not listed
2021	68,988	$13.3 billion	not listed
2020	68,525	$12.9 billion	not listed
2019	67,600	$11.5 billion	not listed
2018	67,336	$9.9 billion	not listed
2017	66,956	$11.4 billion	not listed
2016	66,911	$9.9 billion	not listed
2015	67,619	$9.4 billion	not listed
2014	68,280	$10.2 billion	not listed
2013	42,194	$6.9 billion	not listed
2012	41,105	$6.1 billion	not listed
2011	40,772	$5.2 billion	not listed
2010	40,627	$5.5 billion	not listed
2009	40,567	$4.7 billion	not listed

Retirement Plan for the Hourly Employees of MSD

Pension (defined benefit)Active

Active. The plan filed its annual report for the 2024 plan year.

Plan number: 002Employer EIN 22-1918501
Participants (2024): 6,342
Net assets (2024): $660 million
Plan administrator: Merck Sharp & Dohme LLC
126 East Lincoln Avenue, P.O. Box 2000
Rahway, NJ 07065
(732) 594-4000As filed for 2024
In effect since: July 1, 1956

Year by year, 2009 to 2024

Plan year	Participants	Net assets	Recordkeeper
2024	6,342	$660 million	not listed
2023	6,407	$617 million	not listed
2022	6,711	$673 million	not listed
2021	6,806	$993 million	not listed
2020	6,688	$986 million	not listed
2019	6,668	$875 million	not listed
2018	6,661	$681 million	not listed
2017	6,720	$794 million	not listed
2016	6,846	$708 million	not listed
2015	7,014	$673 million	not listed
2014	7,273	$729 million	not listed
2013	7,563	$738 million	not listed
2012	7,699	$657 million	not listed
2011	7,858	$488 million	not listed
2010	7,998	$537 million	not listed
2009	8,062	$498 million	not listed

If you had money in one of these plans

Call Fidelity (fidelity.com), which runs the Merck US Savings Plan. With your Social Security number and the plan name, it can tell you whether you still have a balance and, if not, where it went.
Or call the plan administrator listed on the plan below ((732) 594-4000). That number was filed for 2025; ask for the benefits or retirement plan office.
Still stuck? The Department of Labor's benefits advisers help for free: askebsa.dol.gov or 1-866-444-3272. Never pay anyone to find your own money.

What these numbers are

They come from the Form 5500 annual reports each plan files with the Department of Labor, as the plan filed them. A plan year is usually a calendar year.
Participants counts everyone in the plan at year end: current employees, former employees who still have a balance or a pension coming, and retirees or beneficiaries being paid.
The recordkeeper is the service provider whose Schedule C entry says it keeps the plan's records. Small plans do not file Schedule C, so some plans show none.
We cannot see anyone's account. Only the plan or its recordkeeper can tell you your balance.

Sources: U.S. Department of Labor, Form 5500 datasets and PBGC trusteed plans. How we read them.