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 Sep 30, 2025
Ownership Breakdown
404
Institutional Holders
▼ 7 vs Q2
$4.58B
Total Inst. Value
▼ $1.94B vs Q2
53.50M
Shares Outstanding
freeFloat 99.19%
54.84M
13F Shares Held
▼ 2.58M vs Q2
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
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
VANGUARD GROUP INC water transportation | 5.67M | 10.10% | 10.10% | $472.98B | Nov 7, 2025 | ▲ 134.3K |
BLACKROCK, INC. water transportation | 5.09M | 9.07% | 9.07% | $424.47B | Nov 12, 2025 | ▲ 203.2K |
MORGAN STANLEY water transportation | 3.55M | 6.33% | 6.33% | $296.34B | May 27, 2026 | ▲ 230.1K |
DIMENSIONAL FUND ADVISORS LP water transportation | 2.39M | 4.26% | 4.26% | $199.52B | Nov 12, 2025 | ▲ 4.9K |
NEUBERGER BERMAN GROUP LLC water transportation | 2.28M | 4.06% | 4.06% | $190.28B | Nov 12, 2025 | ▼ 152.5K |
WELLINGTON MANAGEMENT GROUP LLP water transportation | 1.75M | 3.13% | 3.13% | $146.35B | Nov 14, 2025 | ▼ 134.3K |
STATE STREET CORP water transportation | 1.61M | 2.88% | 2.88% | $134.64B | Nov 14, 2025 | ▲ 2.0K |
KING LUTHER CAPITAL MANAGEMENT CORP water transportation | 1.57M | 2.80% | 2.80% | $131.02B | Nov 7, 2025 | ▲ 122.7K |
ALLIANCEBERNSTEIN L.P. water transportation | 1.57M | 2.80% | 2.80% | $130.93B | Nov 14, 2025 | ▼ 714.0K |
ENCOMPASS CAPITAL ADVISORS LLC water transportation | 1.39M | 2.47% | 2.47% | $115.69B | Nov 14, 2025 | ▲ 161.0K |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2025 vs prior quarter
Q3 2025
32
Increased
+4.79M shares0
New Positions
first time holders18
Decreased
−3.00M shares0
Sold Out
fully exitedNet shares change (top 50)
+1.79M
+4.79M / −3.00M
Net new holders
+14
0 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 5.67 million shares — equal to 10.10% of outstanding shares — as of September 30, 2025.
A total of 404 institutional investors currently hold KEX stock, with a combined institutional value of approximately $4.58 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 10.10% stake. Company insiders hold 0.81%. Data sourced from SEC Form 13F as of September 30, 2025.