David W. Grzebinski
CIK: 0001483620
Transaction Breakdown
High conviction signal
Position reduction
Derivative conversions
Compensation grants
Gifts, tax withholding, conversions, dispositions to the issuer and other codes
Companies & Roles (1)
KIRBY CORP
Discretionary Trading P&L
Holdings
Transaction History (18 total)
- Feb 24, 2026KEX
KIRBY CORP
Exercise(M)Direct34.2K shares at avg. $73.29$2.5M - Feb 24, 2026KEX
KIRBY CORP
Sale(S)Direct34.2K shares at avg. $130.05$4.4M - Feb 3, 2026KEX
KIRBY CORP
Tax Payment(F)Direct8.8K shares at avg. $120.68$1.1M - Feb 3, 2026KEX
KIRBY CORP
Exercise(M)Direct22.5K shares- - Jan 30, 2026KEX
KIRBY CORP
Award(A)DirectRestricted Stock Units
20.2K shares- - Jan 24, 2026KEX
KIRBY CORP
Tax Payment(F)Direct3.2K shares at avg. $128.70$418K - Jan 24, 2026KEX
KIRBY CORP
Exercise(M)Direct8.2K shares- - Nov 21, 2025KEX
KIRBY CORP
Exercise(M)Direct29.5K shares at avg. $73.93$2.2M - Nov 21, 2025KEX
KIRBY CORP
Sale(S)Direct29.5K shares at avg. $107.41$3.2M - Feb 3, 2025KEX
KIRBY CORP
Exercise(M)Direct18.3K shares- - Feb 3, 2025KEX
KIRBY CORP
Tax Payment(F)Direct7.2K shares at avg. $107.14$774K - Jan 31, 2025KEX
KIRBY CORP
Award(A)DirectRestricted Stock Units
20.6K shares- - Jan 24, 2025KEX
KIRBY CORP
Tax Payment(F)Direct4.7K shares at avg. $109.09$516K - Jan 24, 2025KEX
KIRBY CORP
Exercise(M)Direct11.9K shares- - Nov 14, 2024KEX
KIRBY CORP
Gift(G)Direct1K shares- - Sep 16, 2024KEX
KIRBY CORP
Exercise(M)Direct26.4K shares at avg. $75.50$2.0M - Sep 16, 2024KEX
KIRBY CORP
Sale(S)Direct26.4K shares at avg. $120.46$3.2M - Mar 21, 2016KEX
KIRBY CORP
Gift(G)Direct1K shares-
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| Feb 24, 2026 | KEX KIRBY CORP | Exercise(M) | 34,152 | $73.29 | $2,503,000 | Direct |
| Feb 24, 2026 | KEX KIRBY CORP | Sale(S) | 34,152 | $130.05 | $4,441,468 | Direct |
| Feb 3, 2026 | KEX KIRBY CORP | Tax Payment(F) | 8,844 | $120.68 | $1,067,294 | Direct |
| Feb 3, 2026 | KEX KIRBY CORP | Exercise(M) | 22,470 | - | $0 | Direct |
| Jan 30, 2026 | KEX KIRBY CORP | Award(A) Restricted Stock Units | 20,185 | - | - | Direct |
| Jan 24, 2026 | KEX KIRBY CORP | Tax Payment(F) | 3,244 | $128.70 | $417,503 | Direct |
| Jan 24, 2026 | KEX KIRBY CORP | Exercise(M) | 8,150 | - | $0 | Direct |
| Nov 21, 2025 | KEX KIRBY CORP | Exercise(M) | 29,451 | $73.93 | $2,177,312 | Direct |
| Nov 21, 2025 | KEX KIRBY CORP | Sale(S) | 29,451 | $107.41 | $3,163,332 | Direct |
| Feb 3, 2025 | KEX KIRBY CORP | Exercise(M) | 18,347 | - | - | Direct |
| Feb 3, 2025 | KEX KIRBY CORP | Tax Payment(F) | 7,221 | $107.14 | $773,658 | Direct |
| Jan 31, 2025 | KEX KIRBY CORP | Award(A) Restricted Stock Units | 20,615 | - | - | Direct |
| Jan 24, 2025 | KEX KIRBY CORP | Tax Payment(F) | 4,729 | $109.09 | $515,887 | Direct |
| Jan 24, 2025 | KEX KIRBY CORP | Exercise(M) | 11,913 | - | $0 | Direct |
| Nov 14, 2024 | KEX KIRBY CORP | Gift(G) | 1,000 | - | $0 | Direct |
| Sep 16, 2024 | KEX KIRBY CORP | Exercise(M) | 26,358 | $75.50 | $1,990,029 | Direct |
| Sep 16, 2024 | KEX KIRBY CORP | Sale(S) | 26,358 | $120.46 | $3,175,085 | Direct |
| Mar 21, 2016 | KEX KIRBY CORP | Gift(G) | 1,000 | - | $0 | Direct |
1-18 of 18 transactions
About Grzebinski David W
Grzebinski David W (SEC CIK 0001483620) files insider reports with the SEC as CEO of KIRBY CORP (KEX).
Signal8 holds 10 ownership filings by Grzebinski David W (9 Form 4, 1 Form 5), filed between Sep 17, 2024 and Feb 26, 2026. Those filings report 18 transactions, from Mar 21, 2016 to Feb 24, 2026. Signal8's Form 4 history starts in Sep 2024.
The business address on Grzebinski David W's filings is in HOUSTON, TX.
Recent filings by Grzebinski David W
- Feb 24, 2026: Option exercise of KEX shares (Form 4, code M).
- Feb 24, 2026: Open-market sale of KEX shares (Form 4, code S).
- Feb 3, 2026: Tax withholding of KEX shares (Form 4, code F).
- Feb 3, 2026: Option exercise of KEX shares (Form 4, code M).
- Jan 30, 2026: Grant or award of KEX derivative securities (Form 4, code A).
Other insiders filing for KIRBY CORP (KEX)
- Chia Donny, VP Finance and IR
- Husted Amy D., Exec VP General Counsel & Sec
- Woodruff William Matthew, VP of Public and Govt Affairs
- O'Neil Christian G., President and COO
- Williams Shawn D., Director
- Waterman William M., Director