401(k) · DOL Form 5500 · 2024

Adtran, Inc 401(k) Plan

Data updated 2026-08-11

$391M
Total assets: 932
Participants: 97th
Percentile by assets: $420,021
Avg per participant

Official DOL plan name: Adtran, Inc. 401(k) Retirement Plan · Sponsored by Adtran, Inc · Alabama · Professional & Technical Services

$391M in assets, 932 participants

Adtran, Inc's Adtran, Inc. 401(k) Retirement Plan reported $391M in total assets and 932 participants in its 2024 DOL Form 5500 filing, ranking in the 97th 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.

97th percentile by assets (of 123,622 plans)
#19,664 in Professional & Technical Services (20,173 peers)

Coverage in Alabama

Adtran, Inc. 401(k) Retirement Plan covers 932 participants in Alabama, 2.6x the typical Alabama plan (state average ~360 per filing). Assets: $391M.

$391M
total plan assets (2024 EOY): 932
covered participants: 97th
percentile by assets (of 123,622 plans): $420,021
avg assets per participant

Where Adtran, Inc. 401(k) Retirement Plan sits by total assets

Adtran, Inc. 401(k) Retirement Plan vs every filed plan by assets

End-of-year total assets · plan year 2024 · DOL Form 5500

$391,459,259 Top 3% higher than 97% of 123,620 filed plans

Dashed line + filled bar = this entry, among filed plans.

Source U.S. Department of Labor Form 5500 filings (EBSA) · plan year 2024

Adtran, Inc. 401(k) Retirement Plan reported net income fell from $44M in the plan year 2023 filing to $23M in the plan year 2024 filing.
Adtran, Inc. 401(k) Retirement Plan reported participants fell from 1,043 in the plan year 2023 filing to 932 in the plan year 2024 filing.
Adtran, Inc. 401(k) Retirement Plan end-of-year assets rose from $369M in the plan year 2023 filing to $391M in the plan year 2024 filing.

See the national 2023→2024 release diff →

State

Alabama

Industry

Professional & Technical Services

Participants vs Alabama filers

In Alabama, the average filing covers about 360 participants across 1,591 plans. Adtran, Inc. 401(k) Retirement Plan reports 932 participants - 2.6x that state average ($391M EOY assets).

Alabama filing particulars

Total Assets (Beginning of Year)	$369M
Net Assets (End of Year)	$391M
Net Income	$23M
Employer EIN	630918200
Plan Effective Date	1990-01-01
Filing Status	FILING RECEIVED

Sponsor Plan History (Adtran, Inc)

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

Year	Plans	Participants	Total Assets
2022	1	1,042	$325M
2023	1	1,043	$369M
2024	1	932	$391M

Nearby 401(k) Plans in Alabama

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

Adtran, Inc. 401(k) Retirement Plan vs. nearby 401(k) plans in Alabama, assets vs. participants

Regions Financial Corporation 401(k) Plan $3.2B · 20,783
Encompass Health Corporation 401(k) Retirement Plan $1.7B · 29,454
Hexagon Employee Retirement Savings Plan $1.7B · 4,638
Vulcan 401(k) Plan $1.5B · 8,628
Mercedes-Benz U.S. International, Inc. Retirement and Savings Plan $1.2B · 6,167

Compare Adtran, Inc. 401(k) Retirement Plan side-by-side with 3 peers →

Similar-Sized 401(k) Plans Nationally

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

The Perficient, Inc. 401(k) Employee Savings Plan (MO) $391M · 2,670
Pentagon Federal Credit Union Thrift/Savings Plan (VA) $391M · 3,026
Plumbers and Steamfitters Local 486 Severance and Annuity/401(k) Plan (MD) $392M · 4,163
Cwt 401(k) Plan (MN) $391M · 2,376

Frequently Asked Questions

How did Adtran, Inc. 401(k) Retirement Plan assets move in 2024? ▼

Adtran, Inc. 401(k) Retirement Plan grew at a solid clip - up 6.2% during 2024, from $369M to $391M. Reported net income was $23M.

How have Adtran, Inc plan assets changed over time? ▼

Across 3 plan years on file (2022-2024), Adtran, Inc's sponsor-wide assets grew 20.6%, from $325M to $391M.

Where does Adtran, Inc. 401(k) Retirement Plan rank by assets among Form 5500 filers? ▼

Adtran, Inc. 401(k) Retirement Plan ranks in the 97th percentile by end-of-year assets among 123,622 plans that reported assets for plan year 2024 (in the top 5% of all filed plans by assets).

Which 401(k) plans are similar in size to Adtran, Inc. 401(k) Retirement Plan? ▼

Among 401(k) plans in other states, the closest by assets is The Perficient, Inc. 401(k) Employee Savings Plan in MO ($391M, 2,670 participants).

Next read for Adtran, Inc. 401(k) Retirement Plan

Filing takeaways

Ways to act on Adtran, Inc. 401(k) Retirement Plan's numbers.

By total assets, Adtran, Inc. 401(k) Retirement Plan ranks in the top 5% of all filed plans by assets. See the largest plans
Compare it side-by-side against 3 similar 401(k) plans in Alabama. Compare plans
Adtran, Inc's sponsor-wide assets have grown 20.6% since 2022 across 3 plan years on file. More Professional & Technical Services 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 630918200.