Beta0% was sold under disclosed trading plans, 100% with no plan disclosed. The largest seller, David Grzebinski (CEO, Director), sold $7.6M. 70% of these sales were shares from exercising options.Share-of-stake figures for this company are being verified and will be added when that check is finished. Why
A share of stake is shown for 0 of the 10 officers and directors who sold. 20 are left out Disclosed company stock is not an insider's whole wealth.i
Left out: William Waterman, David Grzebinski, Barry Davis, Anne-Marie Ainsworth, Richard Alario, Christian O'Neil, Tanya Beder, Richard Stewart, Amy Husted, Shawn Williams, Ronald Dragg, Susan Dio, Raj Kumar, Kurt Niemietz, Scott Miller, William Woodruff, Jennifer McCauley, Matthew Kerin, Tracy Embree and Donny Chia (share of stake is being verified).
Officers and directors, past 12 months. Their share of stake is being verified and is not shown yet; amounts and trading plans are below.
Officers and directors, Oct 2025 to Oct 2026. Each sale is counted once: under a disclosed plan, else to cover taxes, else no plan disclosed.
No officer or director trades were reported for the past 30 days. The most recent before that:
| Who | Shares | Price | % of total stake | Total stake after | Trade date | Filed |
|---|---|---|---|---|---|---|
| Amy Husted Exec VP General Counsel & Sec | 74 | $131.10 | n/a | n/a | Aug 5, 2026 | Aug 7, 2026 |
Yes. David Grzebinski sold 64K shares ($7.6M) in the past 12 months, none of it under a trading plan disclosed in the filings.
Filings rarely give a reason, and we don't guess at one. What they show is how the sales were made: 0% of sales by value ran under 10b5-1 trading plans disclosed in the filings and 100% had no disclosed plan. A trading plan schedules sales in advance.
No. Officers and directors reported no purchases in the past 12 months.
| Who sold | Amount | % of holdings | Trading plan |
|---|---|---|---|
| David Grzebinski CEO, Director | $7.6M 64K shares | Not confirmedshare of stake is being verified. Why | No plan disclosed |
| Christian O'Neil President and COO | $4.4M 34K shares | Not confirmedshare of stake is being verified. Why | No plan disclosed |
| Amy Husted Exec VP General Counsel & Sec | $3.2M 26K shares | Not confirmedshare of stake is being verified. Why | No plan disclosed |
| Ronald Dragg Vice President and Controller | $1.2M 9.9K shares | Not confirmedshare of stake is being verified. Why | No plan disclosed |
| Barry Davis Director | $1.1M 8.5K shares | Not confirmedshare of stake is being verified. Why | No plan disclosed |
| Scott Miller VP - CIO | $478K 4K shares | Not confirmedshare of stake is being verified. Why | No plan disclosed |
| Raj Kumar Exec VP and CFO | $398K 3K shares | Not confirmedshare of stake is being verified. Why | No plan disclosed |
| William Woodruff VP of Public and Govt Affairs | $344K 2.7K shares | Not confirmedshare of stake is being verified. Why | No plan disclosed |
| Richard Stewart Director | $207K 1.9K shares | Not confirmedshare of stake is being verified. Why | No plan disclosed |
| Kurt Niemietz VP IR & Treasurer | $171K 1.5K shares | Not confirmedshare of stake is being verified. Why | No plan disclosed |
Vested shares across all share classes, held directly and through trusts, LLCs and family members, as reported on SEC Forms 3, 4 and 5. Unvested awards and options are never counted as owned shares.
| Insider | Held Oct 16, 2025 | Sold | Held Oct 16, 2026 | Still held |
|---|---|---|---|---|
William Waterman!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for William Waterman are complete. Director | n/a | 0 | n/a | n/a |
Vesting, gifts, unvested awards and holding lines for William WatermanHoldings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for William Waterman are complete; balances and unit counts will be added when the check is finished. 0gifted (net of own trusts) | ||||
David Grzebinski!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for David Grzebinski are complete. CEO, Director | n/a | −64K | n/a | n/a |
Vesting, gifts, unvested awards and holding lines for David GrzebinskiHoldings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for David Grzebinski are complete; balances and unit counts will be added when the check is finished. 0gifted (net of own trusts) −12Kwithheld by the company for taxes | ||||
Barry Davis!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Barry Davis are complete. Director | n/a | −8.5K | n/a | n/a |
Vesting, gifts, unvested awards and holding lines for Barry DavisHoldings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Barry Davis are complete; balances and unit counts will be added when the check is finished. 0gifted (net of own trusts) | ||||
Anne-Marie Ainsworth!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Anne-Marie Ainsworth are complete. Director | n/a | 0 | n/a | n/a |
Vesting, gifts, unvested awards and holding lines for Anne-Marie AinsworthHoldings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Anne-Marie Ainsworth are complete; balances and unit counts will be added when the check is finished. 0gifted (net of own trusts) | ||||
Richard Alario!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Richard Alario are complete. Director | n/a | 0 | n/a | n/a |
Vesting, gifts, unvested awards and holding lines for Richard AlarioHoldings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Richard Alario are complete; balances and unit counts will be added when the check is finished. 0gifted (net of own trusts) | ||||
Christian O'Neil!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Christian O'Neil are complete. President and COO | n/a | −34K | n/a | n/a |
Vesting, gifts, unvested awards and holding lines for Christian O'NeilHoldings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Christian O'Neil are complete; balances and unit counts will be added when the check is finished. 0gifted (net of own trusts) −5.1Kwithheld by the company for taxes | ||||
Tanya Beder!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Tanya Beder are complete. Director | n/a | 0 | n/a | n/a |
Vesting, gifts, unvested awards and holding lines for Tanya BederHoldings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Tanya Beder are complete; balances and unit counts will be added when the check is finished. 0gifted (net of own trusts) | ||||
Richard Stewart!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Richard Stewart are complete. Director | n/a | −1.9K | n/a | n/a |
Vesting, gifts, unvested awards and holding lines for Richard StewartHoldings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Richard Stewart are complete; balances and unit counts will be added when the check is finished. 0gifted (net of own trusts) | ||||
Amy Husted!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Amy Husted are complete. Exec VP General Counsel & Sec | n/a | −26K | n/a | n/a |
Vesting, gifts, unvested awards and holding lines for Amy HustedHoldings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Amy Husted are complete; balances and unit counts will be added when the check is finished. 0gifted (net of own trusts) −4.1Kwithheld by the company for taxes | ||||
Shawn Williams!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Shawn Williams are complete. Director | n/a | 0 | n/a | n/a |
Vesting, gifts, unvested awards and holding lines for Shawn WilliamsHoldings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Shawn Williams are complete; balances and unit counts will be added when the check is finished. 0gifted (net of own trusts) | ||||
Ronald Dragg!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Ronald Dragg are complete. Vice President and Controller | n/a | −9.9K | n/a | n/a |
Vesting, gifts, unvested awards and holding lines for Ronald DraggHoldings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Ronald Dragg are complete; balances and unit counts will be added when the check is finished. 0gifted (net of own trusts) −959withheld by the company for taxes | ||||
Susan Dio!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Susan Dio are complete. Director | n/a | 0 | n/a | n/a |
Vesting, gifts, unvested awards and holding lines for Susan DioHoldings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Susan Dio are complete; balances and unit counts will be added when the check is finished. 0gifted (net of own trusts) | ||||
Raj Kumar!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Raj Kumar are complete. Exec VP and CFO | n/a | −3K | n/a | n/a |
Vesting, gifts, unvested awards and holding lines for Raj KumarHoldings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Raj Kumar are complete; balances and unit counts will be added when the check is finished. 0gifted (net of own trusts) −2.2Kwithheld by the company for taxes | ||||
Kurt Niemietz!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Kurt Niemietz are complete. VP IR & Treasurer | n/a | −1.5K | n/a | n/a |
Vesting, gifts, unvested awards and holding lines for Kurt NiemietzHoldings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Kurt Niemietz are complete; balances and unit counts will be added when the check is finished. 0gifted (net of own trusts) −913withheld by the company for taxes | ||||
Scott Miller!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Scott Miller are complete. VP - CIO | n/a | −4K | n/a | n/a |
Vesting, gifts, unvested awards and holding lines for Scott MillerHoldings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Scott Miller are complete; balances and unit counts will be added when the check is finished. 0gifted (net of own trusts) −1.9Kwithheld by the company for taxes | ||||
William Woodruff!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for William Woodruff are complete. VP of Public and Govt Affairs | n/a | −2.7K | n/a | n/a |
Vesting, gifts, unvested awards and holding lines for William WoodruffHoldings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for William Woodruff are complete; balances and unit counts will be added when the check is finished. 0gifted (net of own trusts) −642withheld by the company for taxes | ||||
Jennifer McCauley!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Jennifer McCauley are complete. Chief HR Officer | n/a | 0 | n/a | n/a |
Vesting, gifts, unvested awards and holding lines for Jennifer McCauleyHoldings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Jennifer McCauley are complete; balances and unit counts will be added when the check is finished. 0gifted (net of own trusts) −366withheld by the company for taxes | ||||
Matthew Kerin!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Matthew Kerin are complete. VP IR and Treasurer | n/a | 0 | n/a | n/a |
Vesting, gifts, unvested awards and holding lines for Matthew KerinHoldings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Matthew Kerin are complete; balances and unit counts will be added when the check is finished. 0gifted (net of own trusts) | ||||
Tracy Embree!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Tracy Embree are complete. Director | n/a | 0 | n/a | n/a |
Vesting, gifts, unvested awards and holding lines for Tracy EmbreeHoldings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Tracy Embree are complete; balances and unit counts will be added when the check is finished. 0gifted (net of own trusts) | ||||
Donny Chia!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Donny Chia are complete. VP Finance and IR | n/a | 0 | n/a | n/a |
Vesting, gifts, unvested awards and holding lines for Donny ChiaHoldings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Donny Chia are complete; balances and unit counts will be added when the check is finished. 0gifted (net of own trusts) | ||||
Holdings and share of stake for Kirby Corp are being verified, so no balances, unit counts or percentages are shown. Sales, proceeds, plan and tax status, titles and dates come straight from individual filings.
Officer and director open-market sales: $19.1M across 154,813 shares. Plan status and stated purpose are separate questions, and a sale can have both.
Sales with no 10b5-1 plan and no tax reference in the filing. $7.6M of it is David Grzebinski. No plan disclosed is a statement about the filing, not about why the sale happened. Largest such sale: David Grzebinski, Feb 24, 2026
28,242 shares ($3.5M) were withheld by the company for taxes, which isn't a market sale.
| Seller | Shares sold | Proceeds | Under a disclosed plan | Share of total | Sales dates |
|---|---|---|---|---|---|
| David Grzebinski CEO, Director | 64K | $7.6M | 0% | 40% | Nov 21, 2025 to Feb 24, 2026 |
| Christian O'Neil President and COO | 34K | $4.4M | 0% | 23% | Dec 22, 2025 to May 15, 2026 |
| Amy Husted Exec VP General Counsel & Sec | 26K | $3.2M | 0% | 17% | Nov 21, 2025 to May 15, 2026 |
| Ronald Dragg Vice President and Controller | 9.9K | $1.2M | 0% | 6% | Nov 12, 2025 to May 4, 2026 |
| Barry Davis Director | 8.5K | $1.1M | 0% | 6% | Feb 19, 2026 to Feb 19, 2026 |
| Scott Miller VP - CIO | 4K | $478K | 0% | 3% | Feb 10, 2026 to Feb 10, 2026 |
| Raj Kumar Exec VP and CFO | 3K | $398K | 0% | 2% | Mar 2, 2026 to Mar 2, 2026 |
| William Woodruff VP of Public and Govt Affairs | 2.7K | $344K | 0% | 2% | Feb 9, 2026 to May 15, 2026 |
| Richard Stewart Director | 1.9K | $207K | 0% | 1% | Nov 10, 2025 to Nov 10, 2025 |
| Kurt Niemietz VP IR & Treasurer | 1.5K | $171K | 0% | 0.9% | Dec 1, 2025 to Dec 1, 2025 |
| Month | Sale proceeds | Disclosed plan | To cover taxes | No plan disclosed |
|---|---|---|---|---|
| Oct 2025 | $0 | $0 | $0 | $0 |
| Nov 2025 | $4.8M | $0 | $0 | $4.8M |
| Dec 2025 | $1.4M | $0 | $0 | $1.4M |
| Jan 2026 | $0 | $0 | $0 | $0 |
| Feb 2026 | $8.4M | $0 | $0 | $8.4M |
| Mar 2026 | $1.9M | $0 | $0 | $1.9M |
| Apr 2026 | $0 | $0 | $0 | $0 |
| May 2026 | $2.6M | $0 | $0 | $2.6M |
| Jun 2026 | $0 | $0 | $0 | $0 |
| Jul 2026 | $0 | $0 | $0 | $0 |
| Aug 2026 | $0 | $0 | $0 | $0 |
| Sep 2026 | $0 | $0 | $0 | $0 |
| Oct 2026 | $0 | $0 | $0 | $0 |
More than usual: about 1.5x the 5-year average. 10 insiders sold; the average is 10 a year.
| 12 months ending | Shares sold | Insiders who sold | Proceeds |
|---|---|---|---|
| Oct 16, 2026 Latest 12 months | 155K | 10 | $19.1M |
| Oct 16, 2025 1 year earlier | 70K | 5 | $9.0M |
| Oct 16, 2024 2 years earlier | 170K | 12 | $17.6M |
| Oct 17, 2023 3 years earlier | 128K | 11 | $10.1M |
| Oct 17, 2022 4 years earlier | 69K | 10 | $4.6M |
| Oct 17, 2021 5 years earlier | 74K | 10 | $4.6M |
Open-market sales (Form 4 code S) by people who were officers or directors, in split-adjusted shares. Earlier years include people who have since left. A sale that an outside holder also reports (a family trust, a fund) is counted with outside holders in every year. Shares, not dollars, are compared, so a change in the stock price doesn't look like a change in selling. Years the filings don't fully cover are shown but left out of the average.
Holdings and share of stake are being verified. Balances, unit counts and every share-of-stake figure for Kirby Corp are held back until that check is finished. Sales, proceeds, plan and tax status, titles and dates come straight from individual filings and are complete.
External context: we only cite outside events when a documented connection exists. None is shown for this period.
All 1,731 Forms 3, 4 and 5 on record for Kirby Corp (SEC CIK 56047), filed from Jul 27, 2001 to Aug 20, 2026; 56 of them were filed in the 12 months this page covers, retrieved from SEC EDGAR on Oct 16, 2026. Prices are the ones reported in each filing, often weighted averages. 20 older filings exist only on paper and could not be read.
Probable 2-for-1 stock split on or before May 31, 2006 (split date stated in a footnote). Splits aren't reported as transactions; 33 holding lines changed by exactly this ratio, so earlier share counts are restated.
Holdings. Each holding line (a share class plus an owner, such as a trust or LLC) carries its last reported balance forward. Entities first reported during the period start at zero, so transfers between an insider's own trusts don't count as selling. Lines not reported for three years or more are listed separately and left out of totals.
Sales. A sale counts as under a 10b5-1 plan if its footnote cites one or the filing's Rule 10b5-1 box is checked, and as tax-related if its footnote cites tax obligations or sell-to-cover. Shares withheld by the company for taxes are listed separately. Sales with neither attribute are labeled "no plan disclosed".
Spotted something wrong on this page? Report an error. We check every report against the SEC filing and list what we fix in the corrections log.