401(k) · DOL Form 5500 · 2023

Kirby Corporation 401(k) Plan

Data updated 2026-08-25

$777M
Total assets Above avg plan size
4,954
Participants Above avg headcount
98th
Percentile by assets National rank
$156,871
Avg per participant Above avg balance/head
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Official DOL plan name: Kirby 401(k) Plan · Sponsored by Kirby Corporation · Texas · Transportation & Warehousing

$777M in assets, 4,954 participants

Kirby Corporation's Kirby 401(k) Plan reported $777M in total assets and 4,954 participants in its 2023 DOL Form 5500 filing, ranking in the 98th 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.

  • #3,266 in Transportation & Warehousing (3,362 peers)

Coverage in Texas

Kirby 401(k) Plan covers 4,954 participants in Texas, 7.2x the typical Texas plan (state average ~688 per filing). Assets: $777M.

#3,266
in Transportation & Warehousing (3,362 peers)
+12.9%
assets growth YoY
7.8×
vs typical plan assets (national mean)

Kirby 401(k) Plan's outsized position by total assets

Kirby 401(k) Plan vs every filed plan by assets

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

$777,136,884 Top 2% higher than 98% 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

Kirby 401(k) 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. Kirby 401(k) Plan lands in the large band (4,954 participants).

What changed between DOL Form 5500 filings

plan year 2022 → plan year 2023

  • Kirby 401(k) Plan reported net income rose from -$162M in the plan year 2022 filing to $89M in the plan year 2023 filing.
  • Kirby 401(k) Plan end-of-year assets rose from $688M in the plan year 2022 filing to $777M in the plan year 2023 filing.
  • Kirby 401(k) Plan reported participants fell from 5,033 in the plan year 2022 filing to 4,954 in the plan year 2023 filing.

See the national 2022→2023 release diff →

Form 5500 schedule snapshot

Filing strip 741884980 · Kirby Corporation PY 2023 · 401(k)

Kirby 401(k) Plan · $777M · 4,954 · 98th

  • EBSA $777M
  • EBSA 4,954
  • EBSA 98th
  • EBSA 401(k)
  • EBSA near Carpenter Technology Corporation 401(k) Retirement
  • EBSA ind #3266

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 Transportation & Warehousing retirement plans → · Plans in Texas →

Kirby 401(k) Plan in the asset neighbourhood

National Railroad Passenger Corporation Savings PlanNational Railroad Passenger …$780MMallinckrodt Pharmaceuticals Retirement Savings and Investment PlanMallinckrodt Pharmaceuticals…$779MCarpenter Technology Corporation 401(k) RetirementCarpenter Technology Corpora…$778MKirby 401(k) Plan$777MApplied Industrial Technologies, Inc. Retirement Savings PlanApplied Industrial Technolog…$774M
End-of-year total assets ($M) among Kirby 401(k) Plan and nearest nationwide 401(k) peers. Source: DOL Form 5500 plan year 2023.

Texas filing particulars

Total Assets (Beginning of Year)$688M
Net Assets (End of Year)$777M
Net Income$89M
Employer EIN741884980
Plan Effective Date1986-01-01
Filing StatusFILING RECEIVED

Sponsor Plan History (Kirby Corporation)

Sponsor-wide plan assets over time

All Kirby Corporation plans reported in each filing year

Latest sponsor-wide plan assets
$1.2B 21.682442032615445% vs 2022
2024 filing year
$0.9B$1B$1.1B$1.2B$1.3B 202220232024 $1B $1.22B ▲ +22.0%
Year Plans Participants Total Assets
2022 2 6,281 $1.0B
2023 2 6,106 $1.1B
2024 2 6,154 $1.2B

Nearby 401(k) Plans in Texas

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

Kirby 401(k) Plan vs. nearby 401(k) plans in Texas, assets vs. participants Scatter plot of 6 data points. -50000050000100000150000 -1001020304050 Total assets ($B) Participants Kirby 401(k) Plan, Total assets ($B): 0.777136884 · Participants: 4954Kirby 401(k) PlanAT&T Retirement Savings Plan, Total assets ($B): 40.012012 · Participants: 119854AT&T Retirement Savings PlanExxonmobil Savings Plan, Total assets ($B): 21.917 · Participants: 23477Exxonmobil Savings PlanCaterpillar 401(k) Savings Plan, Total assets ($B): 16.496476432 · Participants: 41679Caterpillar 401(k) Savings PlanAmerican Airlines, Inc. 401(k) Plan, Total assets ($B): 14.680189879 · Participants: 88792American Airlines, Inc. 401(k) PlanDell Inc. 401(k) Plan, Total assets ($B): 13.529835 · Participants: 45686Dell Inc. 401(k) Plan
Kirby 401(k) Plan vs. nearby 401(k) plans in Texas, assets vs. participants
Compare Kirby 401(k) Plan side-by-side with 3 peers →

Kirby 401(k) Plan's out-of-state 401(k) peers by assets and headcount

Outside Texas, the nearest 401(k) by assets is Carpenter Technology Corporation 401(k) Retirement in PA ($778M); by covered participants it is The Nebraska Furniture Mart, Inc. Profit Sharing Plan in NE (4,955 participants). Same-state nearby plans are listed separately above.

Similar participant headcount

Nearest other-state filings by covered participants (4,954 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 Kirby 401(k) Plan assets move in 2023? ▼
Kirby 401(k) Plan grew at a solid clip - up 12.9% during 2023, from $688M to $777M. Reported net income was $89M.
How have Kirby Corporation plan assets changed over time? ▼
Across 3 plan years on file (2022-2024), Kirby Corporation's sponsor-wide assets grew 21.7%, from $1.0B to $1.2B.
Where does Kirby 401(k) Plan rank by assets among Form 5500 filers? ▼
Kirby 401(k) Plan ranks in the 98th 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 Kirby 401(k) Plan? ▼
Among 401(k) plans in other states, the closest by assets is Carpenter Technology Corporation 401(k) Retirement in PA ($778M, 3,357 participants).
Which 401(k) plans cover a similar participant headcount to Kirby 401(k) Plan? ▼
Among 401(k) plans in other states, the closest by covered participants is The Nebraska Furniture Mart, Inc. Profit Sharing Plan in NE (4,955 participants, $349M 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 741884980.

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.