401(k) · DOL Form 5500 · 2024

Nisource Inc 401(k) Plan

Data updated 2026-07-24

$2.0B
Total assets: 7,619
Participants: 99th
Percentile by assets: $266,829
Avg per participant

Official DOL plan name: Nisource Inc Retirement Savings Plan · Sponsored by Nisource Inc · Indiana · Utilities

$2.0B in assets, 7,619 participants

Nisource Inc's Nisource Inc Retirement Savings Plan reported $2.0B in total assets and 7,619 participants in its 2024 DOL Form 5500 filing, ranking in the 99th percentile by assets among filed plans. Figures are as reported by the plan sponsor to the Department of Labor, not audited or endorsed by PlainRetire.

99th percentile by assets (of 116,472 plans)

Coverage in Indiana

Nisource Inc Retirement Savings Plan covers 7,619 participants in Indiana, 14x the typical Indiana plan (state average ~555 per filing). Assets: $2.0B.

$2.0B
total plan assets (2024 EOY): 7,619
covered participants: 99th
percentile by assets (of 116,472 plans): $266,829
avg assets per participant

Nisource Inc Retirement Savings Plan reported net income rose from $219M in the plan year 2023 filing to $303M in the plan year 2024 filing.
Nisource Inc Retirement Savings Plan end-of-year assets rose from $1.7B in the plan year 2023 filing to $2.0B in the plan year 2024 filing.
Nisource Inc Retirement Savings Plan reported participants rose from 7,525 in the plan year 2023 filing to 7,619 in the plan year 2024 filing.

See the national 2023→2024 release diff →

State

Indiana

Industry

Utilities

Participants vs Indiana filers

In Indiana, the average filing covers about 555 participants across 2,178 plans. Nisource Inc Retirement Savings Plan reports 7,619 participants - 14x that state average ($2.0B EOY assets).

Indiana filing particulars

Total Assets (Beginning of Year)	$1.7B
Net Assets (End of Year)	$2.0B
Net Income	$303M
Employer EIN	352108964
Plan Effective Date	1958-09-01
Filing Status	FILING RECEIVED

Sponsor Plan History (Nisource Inc)

Total plan assets by year, all Nisource Inc plans on file

Year	Plans	Participants	Total Assets
2022	2	8,886	$1.9B
2023	2	8,727	$2.1B
2024	2	8,722	$2.4B

Nearby 401(k) Plans in Indiana

Peer 401(k) plans, same state, same plan type, ranked by total assets.

Nisource Inc Retirement Savings Plan vs. nearby 401(k) plans in Indiana, assets vs. participants

The Lilly Employee 401(k) Plan $13.1B · 19,977
Elevance Health 401(k) Plan $12.1B · 73,120
Cummins Retirement and Savings Plan $6.4B · 30,272
Iu Health 401(k) Savings Plan $4.5B · 38,460
Steel Dynamics, Inc. Profit Sharing and Retirement Savings Plan $3.0B · 9,385

Compare Nisource Inc Retirement Savings Plan side-by-side with 3 peers →

Similar-Sized 401(k) Plans Nationally

401(k) plans in other states closest to Nisource Inc Retirement Savings Plan by total assets, not by location.

Oshkosh Corporation and Affiliates Tax-Deferred Investment Plan (WI) $2.0B · 12,511
L'oreal USA, Inc. Employee Retirement Savings Plan (NJ) $2.0B · 8,902
Land O'lakes, Inc. Employee Savings and Supplemental Retirement Plan (MN) $2.0B · 7,341
Westlake Savings Plan (TX) $2.0B · 10,707

Frequently Asked Questions

How did Nisource Inc Retirement Savings Plan assets move in 2024? ▼

Nisource Inc Retirement Savings Plan grew sharply - up 17.5% during 2024, from $1.7B to $2.0B. Reported net income was $303M.

How have Nisource Inc plan assets changed over time? ▼

Across 3 plan years on file (2022-2024), Nisource Inc's sponsor-wide assets grew 25.7%, from $1.9B to $2.4B.

Where does Nisource Inc Retirement Savings Plan rank by assets among Form 5500 filers? ▼

Nisource Inc Retirement Savings Plan ranks in the 99th percentile by end-of-year assets among 116,472 plans that reported assets for plan year 2024 (among the largest 1% of all filed plans).

Which 401(k) plans are similar in size to Nisource Inc Retirement Savings Plan? ▼

Among 401(k) plans in other states, the closest by assets is Oshkosh Corporation and Affiliates Tax-Deferred Investment Plan in WI ($2.0B, 12,511 participants).

Next read for Nisource Inc Retirement Savings Plan

Filing takeaways

Ways to act on Nisource Inc Retirement Savings Plan's numbers.

By total assets, Nisource Inc Retirement Savings Plan ranks among the largest 1% of all filed plans. See the largest plans
Compare it side-by-side against 3 similar 401(k) plans in Indiana. Compare plans
Nisource Inc's sponsor-wide assets have grown 25.7% since 2022 across 3 plan years on file. More Utilities plans

Source: U.S. Department of Labor, Employee Benefits Security Administration (EBSA), Form 5500 public disclosure dataset. Plan year 2024.

Source: DOL EFAST2 filing system (efast.dol.gov) - original filing retrieval by EIN 352108964.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from U.S. Department of Labor Form 5500 filings (EBSA). See our methodology for details.