401(k) · DOL Form 5500 · 2023

Adtran, Inc 401(k) Plan

Data updated 2026-08-25

$369M
Total assets Above avg plan size
1,043
Participants Near avg headcount
97th
Percentile by assets National rank
$353,396
Avg per participant High balance/head
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Official DOL plan name: Adtran, Inc. 401(k) Retirement Plan · Sponsored by Adtran, Inc · Alabama · Professional & Technical Services

$369M in assets, 1,043 participants

Adtran, Inc's Adtran, Inc. 401(k) Retirement Plan reported $369M in total assets and 1,043 participants in its 2023 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.

  • #19,843 in Professional & Technical Services (20,321 peers)

Coverage in Alabama

Adtran, Inc. 401(k) Retirement Plan covers 1,043 participants in Alabama, 2.9x the typical Alabama plan (state average ~360 per filing). Assets: $369M.

#19,843
in Professional & Technical Services (20,321 peers)
+13.5%
assets growth YoY
3.7×
vs typical plan assets (national mean)

Adtran, Inc. 401(k) Retirement Plan's outsized position by total assets

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

End-of-year total assets · plan year 2023 · DOL Form 5500

$368,591,913 Top 3% higher than 97% of 127,068 filed plans

This plan $0 $2,050,000,000 every filed plan with reported assets, bucketed by value

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

Source U.S. Department of Labor Form 5500 filings (EBSA) · plan year 2023

Adtran, Inc. 401(k) Retirement Plan's large-plan peer group by participant headcount

Plan-year 2023 Form 5500 filings with a reported participant count, partitioned by headcount band, not by assets. Adtran, Inc. 401(k) Retirement Plan lands in the large band (1,043 participants).

What changed between DOL Form 5500 filings

plan year 2022 → plan year 2023

  • Adtran, Inc. 401(k) Retirement Plan reported net income rose from -$76M in the plan year 2022 filing to $44M in the plan year 2023 filing.
  • Adtran, Inc. 401(k) Retirement Plan end-of-year assets rose from $325M in the plan year 2022 filing to $369M in the plan year 2023 filing.

See the national 2022→2023 release diff →

Published 5500 schedule card

Filing strip 630918200 · Adtran, Inc PY 2023 · 401(k)

Adtran, Inc. 401(k) Retirement Plan · $369M · 1,043 · 97th

  • TYPE $369M
  • TYPE 1,043
  • TYPE 97th
  • TYPE 401(k)
  • TYPE near Six3 Advanced Systems Profit Sharing Plan
  • TYPE ind #19843

Stamps derive from this plan's Form 5500 line items (assets, participants, type, EIN, cohort placement) - not a quality rating of the sponsor. Read with Professional & Technical Services retirement plans → · Plans in Alabama →

Adtran, Inc. 401(k) Retirement Plan in the asset neighbourhood

Cotiviti Savings Plan$369MAdtran, Inc. 401(k) Retirement PlanAdtran, Inc. 401(k) Retireme…$369MSix3 Advanced Systems Profit Sharing PlanSix3 Advanced Systems Profit…$368MSika Corporation 401(k) Savings PlanSika Corporation 401(k) Savi…$368MItg Holdings USA, Inc. Employee Savings & Retirement PlanItg Holdings USA, Inc. Emplo…$368M
End-of-year total assets ($M) among Adtran, Inc. 401(k) Retirement Plan and nearest nationwide 401(k) peers. Source: DOL Form 5500 plan year 2023.

Alabama filing particulars

Total Assets (Beginning of Year)$325M
Net Assets (End of Year)$369M
Net Income$44M
Employer EIN630918200
Plan Effective Date1990-01-01
Filing StatusFILING RECEIVED

Sponsor Plan History (Adtran, Inc)

Sponsor-wide plan assets over time

All Adtran, Inc plans reported in each filing year

Latest sponsor-wide plan assets
$391M 20.56354481416979% vs 2022
2024 filing year
$300M$350M$400M 202220232024 $325M $391M ▲ +20.6%
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 Scatter plot of 6 data points. -100000100002000030000 0123 Total assets ($B) Participants Adtran, Inc. 401(k) Retirement Plan, Total assets ($B): 0.368591913 · Participants: 1043Adtran, Inc. 401(k) Retirement PlanRegions Financial Corporation 401(k) Plan, Total assets ($B): 2.854553916 · Participants: 20733Regions Financial Corporation 401(k) PlanEncompass Health Corporation 401(k) Retirement Plan, Total assets ($B): 1.49327201 · Participants: 24565Encompass Health Corporation 401(k) Retirement PlanHexagon Employee Retirement Savings Plan, Total assets ($B): 1.479278219 · Participants: 4618Hexagon Employee Retirement Savings PlanVulcan 401(k) Plan, Total assets ($B): 1.361024189 · Participants: 9487Vulcan 401(k) PlanMercedes-Benz U.S. International, Inc. Retirement and Savings Plan, Total assets ($B): 1.090263356 · Participants: 0Mercedes-Benz U.S. International, Inc. Retirement and Savings Plan
Adtran, Inc. 401(k) Retirement Plan vs. nearby 401(k) plans in Alabama, assets vs. participants
Compare Adtran, Inc. 401(k) Retirement Plan side-by-side with 3 peers →

Adtran, Inc. 401(k) Retirement Plan's out-of-state 401(k) peers by assets and headcount

Outside Alabama, the nearest 401(k) by assets is Six3 Advanced Systems Profit Sharing Plan in VA ($368M); by covered participants it is New England Authentic Eats 401(k) Plan in MA (1,043 participants). Same-state nearby plans are listed separately above.

Closest by plan assets

Nearest other-state filings by tot_assets_eoy ($369M here).

Similar participant headcount

Nearest other-state filings by covered participants (1,043 participants); asset peers above are excluded.

DOL Form 5500 plan year 2023. Asset totals can differ widely at the same headcount; neither axis is a quality rating.

Frequently Asked Questions

How did Adtran, Inc. 401(k) Retirement Plan assets move in 2023? ▼
Adtran, Inc. 401(k) Retirement Plan grew at a solid clip - up 13.5% during 2023, from $325M to $369M. Reported net income was $44M.
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 127,072 plans that reported assets for plan year 2023 (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 Six3 Advanced Systems Profit Sharing Plan in VA ($368M, 1,420 participants).
Which 401(k) plans cover a similar participant headcount to Adtran, Inc. 401(k) Retirement Plan? ▼
Among 401(k) plans in other states, the closest by covered participants is New England Authentic Eats 401(k) Plan in MA (1,043 participants, $24M in assets).

Source: U.S. Department of Labor, Employee Benefits Security Administration (EBSA), Form 5500 public disclosure dataset. Plan year 2023.

Source: DOL EFAST2 filing system (efast.dol.gov) - original filing retrieval by EIN 630918200.

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.