LONG WILLIAM C

VP, General Counsel, Secretary at DIAMOND OFFSHORE DRILLING, INC. · on record since Jul 3, 2003
SVP - General Counsel at GULFMARK OFFSHORE INC · on record since Sep 16, 2015
EVP, CLO and Secretary at SEACOR HOLDINGS INC /NEW/ · on record since Apr 20, 2016

Insider trading activity of LONG WILLIAM C

Transactions on record: 251; since Oct 3, 2003

Open-market buys: 0

Open-market sells: 50; $1.9M

Companies traded: 3; last filing Apr 19, 2021

Figures computed from official regulatory filings — .

Companies where LONG WILLIAM C has traded

SEACOR HOLDINGS INC /NEW/53 tx · $295.4K · Apr 19, 2021
GULFMARK OFFSHORE INC8 tx · $22.5K · Jan 4, 2016
DIAMOND OFFSHORE DRILLING, INC.190 tx · $2.7M · May 19, 2014

Track record of LONG WILLIAM C

Insufficient history for a statistical track record (fewer than 5 open-market buys).

Transaction history of LONG WILLIAM C

Co-insiders of LONG WILLIAM C

FABRIKANT CHARLESDIAMOND OFFSHORE DRILLING, INC. +1
Acuff Michael DDIAMOND OFFSHORE DRILLING, INC.
BATKIN ALAN RDIAMOND OFFSHORE DRILLING, INC.
Baudoin Mark FDIAMOND OFFSHORE DRILLING, INC.
BEHRENS EVANSEACOR HOLDINGS INC /NEW/
Berz David RSEACOR HOLDINGS INC /NEW/
BIJUR PETER IGULFMARK OFFSHORE INC
Blair Robert GDIAMOND OFFSHORE DRILLING, INC.
BLANK RANDALLSEACOR HOLDINGS INC /NEW/
BOLTON JOHN RDIAMOND OFFSHORE DRILLING, INC.
BUTTERS DAVID JGULFMARK OFFSHORE INC
CAPTAIN Q, LLCGULFMARK OFFSHORE INC
Cenac MatthewSEACOR HOLDINGS INC /NEW/
Coleman Thomas JasonSEACOR HOLDINGS INC /NEW/
COWDEROY JAMESSEACOR HOLDINGS INC /NEW/
Craig W MSEACOR HOLDINGS INC /NEW/
CREDIT SUISSE/SEACOR HOLDINGS INC /NEW/

This page republishes public regulatory disclosures.

Company	Filed	Type	Qty	Price	Value · USD	Src
SEACOR HOLDINGS INC /NEW/Listing unverified	Apr 19, 2021	OtherD (derivative)	-1,500	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
SEACOR HOLDINGS INC /NEW/Listing unverified	Apr 19, 2021	Other	-27,517	—	n/a (No price was disclosed in the filing)	SEC
SEACOR HOLDINGS INC /NEW/Listing unverified	Apr 19, 2021	OtherD (derivative)	-1,625	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
SEACOR HOLDINGS INC /NEW/Listing unverified	Apr 19, 2021	OtherD (derivative)	-1,500	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
SEACOR HOLDINGS INC /NEW/Listing unverified	Apr 19, 2021	OtherD (derivative)	-2,250	5.21 USD	$11.7K	SEC
SEACOR HOLDINGS INC /NEW/Listing unverified	Apr 19, 2021	OtherD (derivative)	-2,250	8.85 USD	$19.9K	SEC
SEACOR HOLDINGS INC /NEW/Listing unverified	Apr 19, 2021	OtherD (derivative)	-2,250	10.24 USD	$23K	SEC
SEACOR HOLDINGS INC /NEW/Listing unverified	Apr 19, 2021	OtherD (derivative)	-1,625	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
SEACOR HOLDINGS INC /NEW/Listing unverified	Apr 19, 2021	OtherD (derivative)	-1,033	6.40 USD	$6.6K	SEC
SEACOR HOLDINGS INC /NEW/Listing unverified	Apr 19, 2021	OtherD (derivative)	-1,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
SEACOR HOLDINGS INC /NEW/Listing unverified	Apr 19, 2021	OtherD (derivative)	-1,033	2.32 USD	$2.4K	SEC
SEACOR HOLDINGS INC /NEW/Listing unverified	Apr 19, 2021	OtherD (derivative)	-775	5.82 USD	$4.5K	SEC
SEACOR HOLDINGS INC /NEW/Listing unverified	Apr 19, 2021	OtherD (derivative)	-775	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
SEACOR HOLDINGS INC /NEW/Listing unverified	Apr 19, 2021	OtherD (derivative)	-1,625	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
SEACOR HOLDINGS INC /NEW/Listing unverified	Apr 19, 2021	OtherD (derivative)	-1,032	5.26 USD	$5.4K	SEC
SEACOR HOLDINGS INC /NEW/Listing unverified	Apr 19, 2021	OtherD (derivative)	-775	3.87 USD	$3K	SEC
SEACOR HOLDINGS INC /NEW/Listing unverified	Apr 19, 2021	OtherD (derivative)	-1,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
SEACOR HOLDINGS INC /NEW/Listing unverified	Apr 19, 2021	OtherD (derivative)	-1,500	0.86 USD	$1.3K	SEC
SEACOR HOLDINGS INC /NEW/Listing unverified	Apr 19, 2021	OtherD (derivative)	-775	1.53 USD	$1.2K	SEC
SEACOR HOLDINGS INC /NEW/Listing unverified	Mar 15, 2021	Other	-1,302	41.17 USD	$53.6K	SEC
SEACOR HOLDINGS INC /NEW/Listing unverified	Dec 7, 2020	AwardD (derivative)	2,250	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
SEACOR HOLDINGS INC /NEW/Listing unverified	Sep 9, 2020	AwardD (derivative)	2,250	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
SEACOR HOLDINGS INC /NEW/Listing unverified	Jun 8, 2020	AwardD (derivative)	2,250	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
SEACOR HOLDINGS INC /NEW/Listing unverified	Mar 6, 2020	AwardD (derivative)	2,250	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
SEACOR HOLDINGS INC /NEW/Listing unverified	Mar 6, 2020	Other	-849	32.65 USD	$27.7K	SEC

Company	Filed	Type	Qty	Price	Value · USD	Src
SEACOR HOLDINGS INC /NEW/Listing unverified	Apr 19, 2021	OtherD (derivative)	-1,500	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
SEACOR HOLDINGS INC /NEW/Listing unverified	Apr 19, 2021	Other	-27,517	—	n/a (No price was disclosed in the filing)	SEC
SEACOR HOLDINGS INC /NEW/Listing unverified	Apr 19, 2021	OtherD (derivative)	-1,625	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
SEACOR HOLDINGS INC /NEW/Listing unverified	Apr 19, 2021	OtherD (derivative)	-1,500	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
SEACOR HOLDINGS INC /NEW/Listing unverified	Apr 19, 2021	OtherD (derivative)	-2,250	5.21 USD	$11.7K	SEC
SEACOR HOLDINGS INC /NEW/Listing unverified	Apr 19, 2021	OtherD (derivative)	-2,250	8.85 USD	$19.9K	SEC
SEACOR HOLDINGS INC /NEW/Listing unverified	Apr 19, 2021	OtherD (derivative)	-2,250	10.24 USD	$23K	SEC
SEACOR HOLDINGS INC /NEW/Listing unverified	Apr 19, 2021	OtherD (derivative)	-1,625	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
SEACOR HOLDINGS INC /NEW/Listing unverified	Apr 19, 2021	OtherD (derivative)	-1,033	6.40 USD	$6.6K	SEC
SEACOR HOLDINGS INC /NEW/Listing unverified	Apr 19, 2021	OtherD (derivative)	-1,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
SEACOR HOLDINGS INC /NEW/Listing unverified	Apr 19, 2021	OtherD (derivative)	-1,033	2.32 USD	$2.4K	SEC
SEACOR HOLDINGS INC /NEW/Listing unverified	Apr 19, 2021	OtherD (derivative)	-775	5.82 USD	$4.5K	SEC
SEACOR HOLDINGS INC /NEW/Listing unverified	Apr 19, 2021	OtherD (derivative)	-775	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
SEACOR HOLDINGS INC /NEW/Listing unverified	Apr 19, 2021	OtherD (derivative)	-1,625	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
SEACOR HOLDINGS INC /NEW/Listing unverified	Apr 19, 2021	OtherD (derivative)	-1,032	5.26 USD	$5.4K	SEC
SEACOR HOLDINGS INC /NEW/Listing unverified	Apr 19, 2021	OtherD (derivative)	-775	3.87 USD	$3K	SEC
SEACOR HOLDINGS INC /NEW/Listing unverified	Apr 19, 2021	OtherD (derivative)	-1,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
SEACOR HOLDINGS INC /NEW/Listing unverified	Apr 19, 2021	OtherD (derivative)	-1,500	0.86 USD	$1.3K	SEC
SEACOR HOLDINGS INC /NEW/Listing unverified	Apr 19, 2021	OtherD (derivative)	-775	1.53 USD	$1.2K	SEC
SEACOR HOLDINGS INC /NEW/Listing unverified	Mar 15, 2021	Other	-1,302	41.17 USD	$53.6K	SEC
SEACOR HOLDINGS INC /NEW/Listing unverified	Dec 7, 2020	AwardD (derivative)	2,250	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
SEACOR HOLDINGS INC /NEW/Listing unverified	Sep 9, 2020	AwardD (derivative)	2,250	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
SEACOR HOLDINGS INC /NEW/Listing unverified	Jun 8, 2020	AwardD (derivative)	2,250	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
SEACOR HOLDINGS INC /NEW/Listing unverified	Mar 6, 2020	AwardD (derivative)	2,250	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
SEACOR HOLDINGS INC /NEW/Listing unverified	Mar 6, 2020	Other	-849	32.65 USD	$27.7K	SEC