Kirby Corporation
Kirby Corporation (KEX) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · KEX · as of Mar 31, 2025
Ownership Breakdown
419
Institutional Holders
▼ 17 vs Q4
$5.66B
Total Inst. Value
▼ $273.58M vs Q4
53.50M
Shares Outstanding
freeFloat 99.19%
56.05M
13F Shares Held
▼ 36,291 vs Q4
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
KEX largest shareholders · institutional ownership
Q1 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
VANGUARD GROUP INC water transportation | 5.79M | 9.91% | 9.91% | $584.80B | May 9, 2025 | ▼ 277.0K |
BLACKROCK, INC. water transportation | 5.01M | 8.58% | 8.58% | $506.17B | May 2, 2025 | ▼ 132.6K |
MORGAN STANLEY water transportation | 3.37M | 5.76% | 5.76% | $340.00B | May 15, 2025 | ▲ 564.6K |
NEUBERGER BERMAN GROUP LLC water transportation | 2.50M | 4.29% | 4.29% | $252.76B | May 13, 2025 | ▼ 687.6K |
DIMENSIONAL FUND ADVISORS LP water transportation | 2.37M | 4.05% | 4.05% | $239.10B | May 13, 2025 | ▼ 8.2K |
SELECT EQUITY GROUP, L.P. water transportation | 1.95M | 3.35% | 3.35% | $197.44B | May 15, 2025 | ▲ 389.0K |
WELLINGTON MANAGEMENT GROUP LLP water transportation | 1.76M | 3.02% | 3.02% | $177.87B | May 13, 2025 | ▼ 1.7K |
STATE STREET CORP water transportation | 1.71M | 2.93% | 2.93% | $173.09B | May 15, 2025 | ▲ 5.9K |
KING LUTHER CAPITAL MANAGEMENT CORP water transportation | 1.51M | 2.58% | 2.58% | $152.47B | May 12, 2025 | ▼ 41.0K |
ALLIANCEBERNSTEIN L.P. water transportation | 1.32M | 2.27% | 2.27% | $133.70B | May 15, 2025 | ▼ 13.4K |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q1 2025 vs prior quarter
Q1 2025
33
Increased
+4.22M shares1
New Positions
first time holders16
Decreased
−1.81M shares0
Sold Out
fully exitedNet shares change (top 50)
+2.41M
+4.22M / −1.81M
Net new holders
+18
1 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
KEX insider trading · insider activity
Source: SEC Form 4
Insiders have been primarily selling shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
8
Buy transactions
1
Sell transactions
8.00
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
Woodruff William Matthew VP of Public and Govt Affairs | May 15, 2026 | Sale | 678 | $147.37 | $99.9K | 9 | Form 4 ↗ |
O'Neil Christian G. President and COO | May 15, 2026 | Sale | 11,287 | $145.93 | $1.65M | 0 | Form 4 ↗ |
Husted Amy D. Exec VP General Counsel & Sec | May 15, 2026 | Sale | 4,000 | $145.43 | $581.7K | 10.8K | Form 4 ↗ |
Williams Shawn D. director | May 4, 2026 | Award | 1,392 | — | — | 13.7K | Form 4 ↗ |
Waterman William M. director | May 4, 2026 | Award | 1,392 | — | — | 40.6K | Form 4 ↗ |
Embree Tracy A director | May 4, 2026 | Award | 1,392 | — | — | 1.8K | Form 4 ↗ |
Dio Susan Leslie director | May 4, 2026 | Award | 1,392 | — | — | 8.6K | Form 4 ↗ |
DAVIS BARRY E director | May 4, 2026 | Award | 1,392 | — | — | 37.1K | Form 4 ↗ |
Beder Tanya S director | May 4, 2026 | Award | 1,392 | — | — | 19.3K | Form 4 ↗ |
ALARIO RICHARD J director | May 4, 2026 | Award | 1,392 | — | — | 28.6K | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
Kirby Corporation (KEX) is primarily owned by institutional investors, who hold approximately 100.0% of total shares outstanding. Company insiders own approximately 0.81%, while retail and public investors account for the remaining 0.00%.
The largest institutional shareholder of Kirby Corporation is VANGUARD GROUP INC, holding approximately 5.79 million shares — equal to 9.91% of outstanding shares — as of March 31, 2025.
A total of 419 institutional investors currently hold KEX stock, with a combined institutional value of approximately $5.66 billion as of the most recent 13F filing period.
Frequently asked questions
KEX ownershipKirby Corporation (KEX) is primarily owned by institutional investors, who hold approximately 100.0% of shares. The largest shareholder is VANGUARD GROUP INC with a 9.91% stake. Company insiders hold 0.81%. Data sourced from SEC Form 13F as of March 31, 2025.