David J Tudor

Insider

First SEC filing: July 25, 2025 · Latest: July 25, 2025

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Insider at Companies where this person is a reporting insider.
Insider transactions Every share this person bought or sold, from Form 4 filings.
Derivatives Options and other derivative holdings reported by this person.
Initial holdings The stakes this person held when they first started reporting.

Insider at

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 27 non-open-market transactions below last 12 months, based on the transactions shown below

Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted

27 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
July 24, 2025	NBR	A	6,440	—	—	7,140 Direct	+920.00%	Acquired	(price as of 2026-08-20)
May 14, 2020	WES	A	7,803	—	—	7,803 Direct	—	Acquired	(price as of 2026-08-20)
Sept. 20, 2019	WES	S	5,000	$27.00	$135,000	31,241 Direct	-13.80%	Disposed	82.4% (price as of 2026-08-20)
Aug. 8, 2019	WES	M	4,202	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Aug. 8, 2019	WES	M	4,202	—	—	36,241 Direct	+13.12%	Acquired	(price as of 2026-08-20)
May 8, 2019	WES	A	4,202	—	—	4,202 Direct	—	Acquired	(price as of 2026-08-20)
May 8, 2019	WES	M	3,058	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
May 8, 2019	WES	M	1,426	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
May 8, 2019	WES	M	3,058	—	—	32,039 Direct	+10.55%	Acquired	(price as of 2026-08-20)
May 8, 2019	WES	M	1,426	—	—	28,981 Direct	+5.18%	Acquired	(price as of 2026-08-20)
Feb. 28, 2019	WES	A	3,058	—	—	3,058 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 28, 2019	WES	A	19,092	—	—	27,555 Direct	+225.59%	Acquired	(price as of 2026-08-20)
May 31, 2018	WES	M	1,153	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
May 31, 2018	WES	M	1,153	—	—	8,463 Direct	+15.77%	Acquired	(price as of 2026-08-20)
May 8, 2018	WES	A	1,426	—	—	1,426 Direct	—	Acquired	(price as of 2026-08-20)
May 31, 2017	WES	A	1,153	—	—	1,153 Direct	—	Acquired	(price as of 2026-08-20)
May 5, 2017	WES	M	1,132	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
May 5, 2017	WES	M	1,132	—	—	7,310 Direct	+18.32%	Acquired	(price as of 2026-08-20)
May 13, 2016	WES	M	724	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
May 13, 2016	WES	M	724	$40.20	$29,105	6,178 Direct	+13.27%	Acquired	22.5% (price as of 2026-08-20)
May 5, 2016	WES	A	1,132	—	—	1,132 Direct	—	Acquired	(price as of 2026-08-20)
May 22, 2015	WES	M	880	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
May 22, 2015	WES	M	880	—	—	5,454 Direct	+19.24%	Acquired	(price as of 2026-08-20)
May 13, 2015	WES	A	724	—	—	724 Direct	—	Acquired	(price as of 2026-08-20)
Jan. 14, 2015	WES	P	500	$51.95	$25,975	4,574 Direct	+12.27%	Acquired	-5.2% (price as of 2026-08-20)
May 22, 2014	WES	A	880	—	—	880 Direct	—	Acquired	(price as of 2026-08-20)
Jan. 31, 2014	WES	M	2,074	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Jan. 31, 2014	WES	M	2,074	—	—	4,074 Direct	+103.70%	Acquired	(price as of 2026-08-20)
Jan. 31, 2013	WES	A	2,074	—	—	2,074 Direct	—	Acquired	(price as of 2026-08-20)
Dec. 6, 2012	WES	P	2,000	$22.00	$44,000	2,000 Direct	—	Acquired	123.9% (price as of 2026-08-20)

P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding

Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.

Derivative holdings (Form 4 Table II)

Options, RSUs and convertible securities reported on Form 4 Table II.

Date	Ticker	Security	Underlying	Exercise price	Expiration	Shares	A/D
May 14, 2020	WES	Phantom Units	Common Units representing limited partner interests (7,803)	—	May 14, 2021	7,803	Acquired
Aug. 8, 2019	WES	Phantom Units	Common Units representing limited partner interests (4,202)	—	May 8, 2020	4,202	Disposed
May 8, 2019	WES	Phantom Units	Common Units representing limited partner interests (4,202)	—	May 8, 2020	4,202	Acquired
May 8, 2019	WES	Phantom Units	Common Units representing limited partner interests (3,058)	—	May 8, 2019	3,058	Disposed
May 8, 2019	WES	Phantom Units	Common Units representing limited partner interests (1,426)	—	May 8, 2019	1,426	Disposed
Feb. 28, 2019	WES	Phantom Units	Common Units representing limited partner interests (3,058)	—	May 8, 2019	3,058	Acquired
May 31, 2018	WES	Phantom Units	Common Units representing limited partner interests (1,153)	—	May 31, 2018	1,153	Disposed
May 8, 2018	WES	Phantom Units	Common Units representing limited partner interests (1,426)	—	May 8, 2019	1,426	Acquired
May 31, 2017	WES	Phantom Units	Common Units representing limited partner interests (1,153)	—	May 31, 2018	1,153	Acquired
May 5, 2017	WES	Phantom Units	Common Units representing limited partner interests (1,132)	—	May 5, 2017	1,132	Disposed
May 13, 2016	WES	Phantom Units	Common Units representing limited partner interests (724)	—	May 13, 2016	724	Disposed
May 5, 2016	WES	Phantom Units	Common Units representing limited partner interests (1,132)	—	May 5, 2017	1,132	Acquired
May 22, 2015	WES	Phantom Units	Common Units representing limited partner interests (880)	—	May 22, 2015	880	Disposed
May 13, 2015	WES	Phantom Units	Common Units representing limited partner interests (724)	—	May 13, 2016	724	Acquired
May 22, 2014	WES	Phantom Units	Common Units representing limited partner interests (880)	—	May 22, 2015	880	Acquired
Jan. 31, 2014	WES	Phantom Units	Common Units representing limited partner interests (2,074)	—	Jan. 31, 2014	2,074	Disposed
Jan. 31, 2013	WES	Phantom Units	Common Units representing limited partner interests (2,074)	—	Jan. 31, 2014	2,074	Acquired

Exercise/conversion price is blank when not applicable (e.g. RSUs).

Initial ownership (Form 3) 1 holding

Securities held when first becoming an insider, per SEC Form 3.

Date	Ticker	Security	Shares	Ownership
July 25, 2025	NBR	Common Stock	700	Direct