401(k) · DOL Form 5500 · 2024
Kirby Corporation 401(k) Plan
Data updated 2026-08-11
- $850M
- Total assets
- 5,102
- Participants
- 98th
- Percentile by assets
- $166,626
- Avg per participant
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.
- 98th percentile by assets (of 123,622 plans)
- #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.
- $850M
- total plan assets (2024 EOY)
- 5,102
- covered participants
- 98th
- percentile by assets (of 123,622 plans)
- $166,626
- avg assets per participant
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.
Participants vs Texas filers
In Texas, the average filing covers about 688 participants across 10,116 plans. Kirby 401(k) Plan reports 5,102 participants - 7.4x that state average ($850M EOY assets).
Texas filing particulars
| Total Assets (Beginning of Year) | $777M |
|---|---|
| Net Assets (End of Year) | $850M |
| Net Income | $73M |
| Employer EIN | 741884980 |
| Plan Effective Date | 1986-01-01 |
| Filing Status | FILING RECEIVED |
Sponsor Plan History (Kirby Corporation)
| 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
- AT&T Retirement Savings Plan $43.1B · 109,889
- Exxonmobil Savings Plan $23.7B · 21,990
- Chevron Employee Savings Investment Plan $20.4B · 21,505
- Caterpillar 401(k) Savings Plan $18.8B · 43,873
- Southwest Airlines Co. Retirement Savings Plan $17.0B · 67,820
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 Pension Plan (Defined Benefit (Pension), $373M, 1,052 participants)
Similar-Sized 401(k) Plans Nationally
401(k) plans in other states closest to Kirby 401(k) Plan by total assets, not by location.
- Shi International Corp 401(k) Savings Plan (NJ) $850M · 6,474
- Zillow Group 401(k) Plan (WA) $850M · 6,157
- Amdocs, Inc. 401(k) Plan (MO) $851M · 3,070
- Mallinckrodt Pharmaceuticals Retirement Savings and Investment Plan (MO) $851M · 2,480
Frequently Asked Questions
How did Kirby 401(k) Plan assets move in 2024? ▼
How have Kirby Corporation plan assets changed over time? ▼
Where does Kirby 401(k) Plan rank by assets among Form 5500 filers? ▼
Which 401(k) plans are similar in size to Kirby 401(k) Plan? ▼
Next read for Kirby 401(k) Plan
Filing takeaways
Ways to act on Kirby 401(k) Plan's numbers.
- By total assets, Kirby 401(k) 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 Texas. Compare plans
- Kirby Corporation's sponsor-wide assets have grown 21.7% since 2022 across 3 plan years on file. More Transportation & Warehousing plans