401(k) · DOL Form 5500 · 2024

Kirby Corporation 401(k) Plan

Data updated 2026-08-25

$850M
Total assets Above avg plan size
5,102
Participants Above avg headcount
98th
Percentile by assets National rank
$166,626
Avg per participant Above avg balance/head
PlainRetire home → About this data RSS: change history

Official DOL plan name: Kirby 401(k) Plan · Sponsored by Kirby Corporation · Texas · Transportation & Warehousing

$850M in assets, 5,102 participants

Kirby Corporation's Kirby 401(k) Plan reported $850M in total assets and 5,102 participants in its 2024 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.

  • #3,202 in Transportation & Warehousing (3,299 peers)

Coverage in Texas

Kirby 401(k) Plan covers 5,102 participants in Texas, 7.4x the typical Texas plan (state average ~688 per filing). Assets: $850M.

#3,202
in Transportation & Warehousing (3,299 peers)
+9.4%
assets growth YoY
8.5×
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 2024 · DOL Form 5500

$850,124,257 Top 2% higher than 98% of 123,620 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 2024

Kirby 401(k) Plan's large-plan peer group by participant headcount

Plan-year 2024 Form 5500 filings with a reported participant count, partitioned by headcount band, not by assets. Kirby 401(k) Plan lands in the large band (5,102 participants).

What changed between DOL Form 5500 filings

plan year 2023 → plan year 2024

  • Kirby 401(k) Plan reported net income fell from $89M in the plan year 2023 filing to $73M in the plan year 2024 filing.
  • Kirby 401(k) Plan end-of-year assets rose from $777M in the plan year 2023 filing to $850M in the plan year 2024 filing.
  • Kirby 401(k) Plan reported participants rose from 4,954 in the plan year 2023 filing to 5,102 in the plan year 2024 filing.

See the national 2023→2024 release diff →

Form 5500 schedule snapshot

Filing strip 741884980 · Kirby Corporation PY 2024 · 401(k)

Kirby 401(k) Plan · $850M · 5,102 · 98th

  • SCH $850M
  • SCH 5,102
  • SCH 98th
  • SCH 401(k)
  • SCH near Shi International Corp 401(k) Savings Plan
  • SCH ind #3202

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

Mallinckrodt Pharmaceuticals Retirement Savings and Investment PlanMallinckrodt Pharmaceuticals…$851MAmdocs, Inc. 401(k) Plan$851MShi International Corp 401(k) Savings PlanShi International Corp 401(k…$850MKirby 401(k) Plan$850MZillow Group 401(k) Plan$850M
End-of-year total assets ($M) among Kirby 401(k) Plan and nearest nationwide 401(k) peers. Source: DOL Form 5500 plan year 2024.

Texas filing particulars

Total Assets (Beginning of Year)$777M
Net Assets (End of Year)$850M
Net Income$73M
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): 0.850124257 · Participants: 5102Kirby 401(k) PlanAT&T Retirement Savings Plan, Total assets ($B): 43.121795 · Participants: 109889AT&T Retirement Savings PlanExxonmobil Savings Plan, Total assets ($B): 23.711 · Participants: 21990Exxonmobil Savings PlanChevron Employee Savings Investment Plan, Total assets ($B): 20.378704663 · Participants: 21505Chevron Employee Savings Investment PlanCaterpillar 401(k) Savings Plan, Total assets ($B): 18.81200478 · Participants: 43873Caterpillar 401(k) Savings PlanSouthwest Airlines Co. Retirement Savings Plan, Total assets ($B): 16.991748637 · Participants: 67820Southwest Airlines Co. Retirement Savings 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 →

Scale composition for Kirby 401(k) Plan

Kirby 401(k) Plan reports $850M in end-of-year assets across 5,102 participants (0.007% of the $12.3T held by all Form 5500 filers in the national rollup , and 0.005% of 93,925,755 covered participants) - about $166,626 per participant (1.2x the national average assets-per-participant) . Net income for plan year 2024 was $73M.

This plan identity (EIN 741884980, plan #004) has 3 Form 5500 filings on file from 2022 to 2024 , with end-of-year assets moving from $688M to $850M (+23.5%) while covered participants moved from 5,033 to 5,102 . Single-year sparse filers cannot show that trail.

Plan year Participants EOY assets Filing
2022 5,033 $688M Open filing
2023 4,954 $777M Open filing
2024 · index core 5,102 $850M This page

The same sponsor also keeps 1 other index-core plan on PlainRetire:

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

Outside Texas, the nearest 401(k) by assets is Shi International Corp 401(k) Savings Plan in NJ ($850M); by covered participants it is Curaleaf, Inc. 401(k) Plan in CT (5,104 participants). Same-state nearby plans are listed separately above.

Closest by plan assets

Nearest other-state filings by tot_assets_eoy ($850M here).

Similar participant headcount

Nearest other-state filings by covered participants (5,102 participants); asset peers above are excluded.

DOL Form 5500 plan year 2024. 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 2024? ▼
Kirby 401(k) Plan grew at a solid clip - up 9.4% during 2024, from $777M to $850M. Reported net income was $73M.
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 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 Kirby 401(k) Plan? ▼
Among 401(k) plans in other states, the closest by assets is Shi International Corp 401(k) Savings Plan in NJ ($850M, 6,474 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 Curaleaf, Inc. 401(k) Plan in CT (5,104 participants, $18M in assets).

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 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.