Southwest Gas 401(k) and pension plans

Southwest Gas Corporation, Las Vegas, NV. EIN 88-0085720. Annual reports 2009–2025.

Southwest Gas Corporation has 2 active retirement plans on file. The largest is the Southwest Gas Corporation Employees' Investment Plan, with 2,983 participants and $693 million in assets in 2025. Fidelity has been its recordkeeper since 2009.

Active plans: 2
Participants: 7,473
Plan assets: $1.9 billion
401(k) recordkeeper: Fidelity
Plans on file: 2
Industry: Utilities

All 2 plans

Active plans first

Southwest Gas Corporation Employees' Investment Plan

401(k) with ESOPActive

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

Plan number: 004Employer EIN 88-0085720
Participants (2025): 2,983
Net assets (2025): $693 million
Recordkeeper: Fidelity2009–2025
Plan administrator: Southwest Gas Corporation
8360 South Durango Drive
Las Vegas, NV 89113
(702) 876-7300As filed for 2025
In effect since: April 1, 1965

Year by year, 2009 to 2025

Plan year	Participants	Net assets	Recordkeeper
2025	2,983	$693 million	Fidelity
2024	2,977	$600 million	Fidelity
2023	2,900	$532 million	Fidelity
2022	2,871	$465 million	Fidelity
2021	2,778	$591 million	Fidelity
2020	2,707	$539 million	Fidelity
2019	2,740	$487 million	Fidelity
2018	2,728	$425 million	Fidelity
2017	2,664	$463 million	Fidelity
2016	2,599	$410 million	Fidelity
2015	2,598	$379 million	Fidelity
2014	2,597	$408 million	Fidelity
2013	2,598	$400 million	Fidelity
2012	2,569	$332 million	Fidelity
2011	2,667	$310 million	Fidelity
2010	2,712	$300 million	Fidelity
2009	2,580	$257 million	Fidelity

Retirement Plan for Employees of Southwest Gas Corporation

Pension (defined benefit)Active

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

Plan number: 001Employer EIN 88-0085720
Participants (2024): 4,490
Net assets (2024): $1.2 billion
Last listed administrator: AonEarlier: Alight (2015)
Plan administrator: Southwest Gas Corporation
8360 S. Durango Drive
Las Vegas, NV 89113
(702) 876-7243As filed for 2024
In effect since: August 1, 1971

Year by year, 2009 to 2024

Plan year	Participants	Net assets	Recordkeeper
2024	4,490	$1.2 billion	not listed
2023	4,577	$1.2 billion	not listed
2022	4,837	$1.1 billion	not listed
2021	4,774	$1.2 billion	not listed
2020	4,792	$1.4 billion	not listed
2019	4,722	$1.1 billion	not listed
2018	4,701	$935 million	Aon
2017	4,617	$893 million	Aon
2016	4,586	$851 million	Aon
2015	4,902	$807 million	Alight
2014	4,788	$824 million	not listed
2013	4,633	$790 million	not listed
2012	4,545	$699 million	not listed
2011	4,442	$600 million	not listed
2010	4,431	$557 million	not listed
2009	4,421	$447 million	not listed

If you had money in one of these plans

Call Fidelity (fidelity.com), which runs the Southwest Gas Corporation Employees' Investment 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 ((702) 876-7300). 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.

All 2 plans

Southwest Gas Corporation Employees' Investment Plan

Retirement Plan for Employees of Southwest Gas Corporation

If you had money in one of these plans

What these numbers are

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