Plan Ledger DOL Form 5500 · updated monthly

Southwest Gas Corporation401(k) + ESOP (KSOP)

SOUTHWEST GAS CORPORATION EMPLOYEES' INVESTMENT PLAN · LAS VEGAS, NV · plan year 2025

Reported admin expense ratio · 2025
0.05%

Peer grade: B+ · admin costs + employer contributions vs same-size plans · how grading works

Southwest Gas Corporation reported $297,582 in plan administrative expenses for 2025: 0.05% of average plan assets, below the peer median. Employer contributions averaged $4,710 per active participant. This ratio covers administrative expenses reported on the plan's Schedule H only; fund-level expense ratios are not included in public structured data — see methodology.

Across the 4 years on file its reported administrative ratio has held roughly steady near 0.05%. The plan sits in the $250M–$1B size bracket, benchmarked here against 230 comparable plans and shown alongside other utilities employers. By assets it is the 8th-largest of 437 plans among Nevada employers on file, and the 54th of 412 in utilities. In 2025, employees put in $2.54 for every $1.00 the employer contributed.

Plan summary
Net assets, end of year$693,061,076
Participants with balances2,972
Active participants2,458
Employer contributions$11,577,067
Employee contributions$29,430,553
Employer contribution per active participant$4,710
Average account balance$233,197
Benefits paid to participants$51,610,280
Plan auditUnmodified (clean) audit opinion
Plan history4
Yearassets · accounts · employer contribution
2025$693.1M · 2,972 accts · $11.6M emplr
2024$599.9M · 2,959 accts · $9.7M emplr
2023$532.2M · 2,887 accts · $8.0M emplr
2022$464.9M · 2,852 accts · $6.7M emplr
Administrative expenses, itemized · 2025
Recordkeeping & contract admin$297,582
Total administrative$297,582
The Southwest Gas Corporation 401(k) match · 2025
Employer contribution per active participant$4,710
Median for plans this size$4,295
2025$4,710 per active participant
2024$3,974 per active participant
2023$3,371 per active participant
2022$2,832 per active participant

Southwest Gas Corporation's 2025 employer contribution ran above the $4,295 median for plans its size. Filings report dollars actually contributed, not the match formula; the formula itself (for example, 50% of the first 6% of pay) lives in the plan's summary plan description from HR.

What these fees cost you

Annual cost at the plan's reported 2025 administrative ratio, against the median plan its size; fund expense ratios are extra. Compare any plan.

Service providers · 20251
FIDELITY INVESTMENTS INSTITUTIONAL · Loan processing$297,582

Compensation shown is direct payments from plan assets reported on Schedule C. Providers paid through fund revenue-sharing appear as indirect.

Administrative cost history4
2025$297,582 · 0.05%
2024$261,925 · 0.05%
2023$246,352 · 0.05%
2022$234,681 · 0.04%
Same employer
Similar plansUtilities · Nevada
NV Energy, Inc. NV$1.1B · 0.07%
Avista Corporation WA$843.5M · 0.10%
Spire Services Inc. MO$777.0M · 0.03%
Ugi Utilities, Inc. PA$713.8M · 0.05%
Energy Harbor Corp. OH$681.4M · 0.08%
Talen Energy Supply, LLC TX$663.8M · 0.09%
Naes Corporation WA$643.7M · 0.10%

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Source: U.S. Department of Labor, Form 5500 series, EIN 880085720 · Verify on EFAST2 · Amounts are as reported by the plan sponsor for the plan year shown.