Other · DOL Form 5500 · 2023

Kirby 401(k) Plan

Data updated 2026-05-15

$777M
Total assets
4,954
Participants
98th
Percentile by assets
$156,871
Avg per participant

Sponsored by Kirby Corporation · Texas · Transportation & Warehousing

What the 2023 filing shows

Kirby 401(k) Plan holds $777M for 4,954 participants - about $156,871 per participant, in the top 5% of all filed plans by assets, up 12.9% over the 2023 plan year.

$777M
total plan assets (2023 EOY)
4,954
covered participants
98th
percentile by assets (of 126,618 plans)
$156,871
avg assets per participant
State
Industry
Transportation & Warehousing

Other · DOL Form 5500 · 2023

What the Filing Says About Kirby 401(k) Plan

Kirby 401(k) Plan is an Other retirement plan sponsored by Kirby Corporation, headquartered in Texas. According to the U.S. Department of Labor's 2023 Form 5500 filing, the plan reports $777M in total end-of-year assets and covers 4,954 participants across the Transportation & Warehousing industry. The sponsor's EIN on file with the U.S. Department of Labor is 741884980, and the plan has been effective since 1986-01-01. Its filing status is currently FILING RECEIVED.

Year over year, total assets grew at a solid clip from $688M at the beginning of 2023 to $777M at year-end - up 12.9%. Net assets (after liabilities) closed the year at $777M, with reported net income of $89M driven by investment returns, contributions received, and benefit payments during the period. These figures reflect what the plan administrator certified on Schedule H or Schedule I of the Form 5500 annual return and can be compared against 2 prior plan-year filings from the same sponsor shown below.

Across the 3 plan years Kirby Corporation has on file with PlainRetire (2022-2024), sponsor-wide plan assets have moved from $1.0B to $1.2B, a gain of 21.7%, while reported participants moved from 6,281 to 6,154 (-2.0%). The strongest year on file by total sponsor assets was 2024 at $1.2B; the softest was 2022 at $1.0B. Year-by-year, sponsor-wide filings show: 2022 - $1.0B in assets across 2 plans covering 6,281 participants; 2023 - $1.1B in assets across 2 plans covering 6,106 participants; 2024 - $1.2B in assets across 2 plans covering 6,154 participants.

By assets, Kirby 401(k) Plan outranks 98% of the 126,618 plans that filed a Form 5500 for the 2023 plan year, and holds roughly 7.8x the national average plan size of $100M and 730 average participants.

Asset totals and participant counts reflect a single plan year snapshot and can change materially with market conditions, plan mergers, or workforce changes. Fields such as "net income" include both realized investment performance and contribution/distribution flows, a single-year figure does not by itself indicate plan health or participant outcomes. This page summarizes public DOL disclosures for research and educational purposes only and is not retirement, tax, legal, or financial advice. Before making decisions about your own retirement benefits or evaluating an employer's plan, verify the underlying filing directly via the DOL EFAST2 system and consult a qualified professional.

How the percentile is calculated: we count every plan that filed a 2023 Form 5500 with a reported end-of-year asset figure (126,618 plans), rank Kirby 401(k) Plan against all of them by total assets, and report the share of those plans it outranks. A plan reporting no asset figure for the year is excluded from the ranking rather than assumed to be zero.

Financial Summary (2023)

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

Peer Other plans, same state, same plan type, ranked by total assets.

Frequently Asked Questions

How much money is in the Kirby 401(k) Plan?
As of the 2023 Form 5500 filing, Kirby 401(k) Plan holds $777M in total assets with 4,954 participants. It is sponsored by Kirby Corporation.
What type of plan is Kirby 401(k) Plan?
Kirby 401(k) Plan is an Other plan. It has been effective since 1986-01-01. The plan is filed with the U.S. Department of Labor under EIN 741884980.
Who sponsors the Kirby 401(k) Plan?
Kirby 401(k) Plan is sponsored by Kirby Corporation, located in Texas. The sponsor's EIN is 741884980 and the plan operates in the Transportation & Warehousing industry.
How did Kirby 401(k) Plan perform in 2023?
Kirby 401(k) Plan grew at a solid clip - up 12.9% during 2023, moving from $688M to $777M in total assets. Net income was $89M.

What this filing means

Ways to act on Kirby 401(k) Plan's numbers.

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.

Reference: IRS Publication 560, Retirement Plans for Small Business, contribution-limit rules.

Reference: IRS Publication 590-B, Distributions from IRAs, RMD rules under SECURE Act 2.0.

Data sourced from U.S. Department of Labor Form 5500 filings (EBSA). See our methodology for details.

Every figure on PlainRetire is rendered directly from the Department of Labor's Form 5500 annual return filings, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2026-05-15.