Pioneer Natural Resources USA 401(k) plan

Pioneer Natural Resources USA, Inc., Irving, TX. EIN 75-2516853. Annual reports 2009–2025.

Pioneer Natural Resources USA, Inc. has one active retirement plan on file, the Pioneer Natural Resources USA, Inc. 401(k) and Matching Plan, with 2,994 participants and $855 million in assets in 2025. Vanguard has been its recordkeeper since 2009. No traditional pension plan appears in Pioneer Natural Resources USA's filings since 2009.

Active plans: 1
Participants: 2,994
Plan assets: $855 million
401(k) recordkeeper: Vanguard
Plans on file: 1
Industry: Mining, oil and gas

The plan

Pioneer Natural Resources USA, Inc. 401(k) and Matching Plan

401(k)Active

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

Plan number: 001Employer EIN 75-2516853
Participants (2025): 2,994
Net assets (2025): $855 million
Recordkeeper: Vanguard2009–2025
Plan administrator: Pioneer Natural Resources USA, Inc. 401K and Matching Plan Committee
777 Hidden Ridge
Irving, TX 75038
(972) 444-9001As filed for 2025
In effect since: January 1, 1990

Year by year, 2009 to 2025

Plan year	Participants	Net assets	Recordkeeper
2025	2,994	$855 million	Vanguard
2024	3,340	$849 million	Vanguard
2023	3,544	$792 million	Vanguard
2022	3,563	$672 million	Vanguard
2021	3,558	$796 million	Vanguard
2020	3,450	$698 million	Vanguard
2019	5,054	$668 million	Vanguard
2018	4,739	$653 million	Vanguard
2017	4,608	$701 million	Vanguard
2016	4,335	$575 million	Vanguard
2015	4,410	$500 million	Vanguard
2014	4,612	$511 million	Vanguard
2013	4,252	$466 million	Vanguard
2012	3,939	$356 million	Vanguard
2011	3,207	$287 million	Vanguard
2010	2,451	$260 million	Vanguard
2009	2,099	$209 million	Vanguard

If you had money in one of these plans

Call Vanguard (investor.vanguard.com), which runs the Pioneer Natural Resources USA, Inc. 401(k) and Matching 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 ((972) 444-9001). 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.

The plan

Pioneer Natural Resources USA, Inc. 401(k) and Matching Plan

If you had money in one of these plans

What these numbers are

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