Martin J Whitman

Insider

First SEC filing: Feb. 20, 2007 · Latest: Feb. 20, 2007

On this page

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.

Insider at

NBR selling May 10, 2005

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 34 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

34 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
March 31, 2011	NBR	A	3,127	$30.38	$94,998	3,127 Direct	—	Acquired	-94.0% (price as of 2026-08-20)
Feb. 18, 2011	NBR	A	12,000	—	—	379,593 Direct	+3.26%	Acquired	(price as of 2026-08-20)
Feb. 18, 2011	NBR	A	12,000	—	—	11,469,593 Direct	+0.10%	Acquired	(price as of 2026-08-20)
Dec. 31, 2010	NBR	A	4,208	$23.46	$98,720	4,208 Direct	—	Acquired	-92.2% (price as of 2026-08-20)
Dec. 3, 2010	NBR	M	45,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Dec. 3, 2010	NBR	F	43,445	$23.59	$1,024,868	11,457,593 Direct	-0.38%	Disposed	-92.2% (price as of 2026-08-20)
Dec. 3, 2010	NBR	M	45,000	$22.78	$1,025,100	11,501,038 Direct	+0.39%	Acquired	-91.9% (price as of 2026-08-20)
Sept. 30, 2010	NBR	A	6,019	$18.06	$108,703	6,019 Direct	—	Acquired	-89.8% (price as of 2026-08-20)
June 30, 2010	NBR	A	5,884	$17.62	$103,676	5,884 Direct	—	Acquired	-89.6% (price as of 2026-08-20)
April 5, 2010	NBR	A	4,841	$20.64	$99,918	4,841 Direct	—	Acquired	-91.1% (price as of 2026-08-20)
Feb. 18, 2010	NBR	A	12,000	—	—	366,038 Direct	+3.39%	Acquired	(price as of 2026-08-20)
Dec. 2, 2009	NBR	M	35,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Dec. 2, 2009	NBR	M	35,000	$12.38	$433,300	354,038 Direct	+10.97%	Acquired	-85.2% (price as of 2026-08-20)
Feb. 20, 2009	NBR	A	12,000	—	—	319,038 Direct	+3.91%	Acquired	(price as of 2026-08-20)
Feb. 22, 2008	NBR	A	12,000	—	—	307,038 Direct	+4.07%	Acquired	(price as of 2026-08-20)
Jan. 10, 2008	NBR	M	10,000	$12.47	$124,700	0 Direct	-100.00%	Disposed	-85.3% (price as of 2026-08-20)
Jan. 10, 2008	NBR	M	25,000	$6.31	$157,750	0 Direct	-100.00%	Disposed	-70.9% (price as of 2026-08-20)
Jan. 10, 2008	NBR	M	10,000	$12.47	$124,700	295,038 Direct	+3.51%	Acquired	-85.3% (price as of 2026-08-20)
Jan. 10, 2008	NBR	M	25,000	$6.31	$157,750	285,038 Direct	+9.61%	Acquired	-70.9% (price as of 2026-08-20)
Feb. 22, 2007	NBR	A	12,000	—	—	260,038 Direct	+4.84%	Acquired	(price as of 2026-08-20)
Feb. 16, 2007	NBR	M	10,000	$8.12	$81,200	0 Direct	-100.00%	Disposed	-77.4% (price as of 2026-08-20)
Feb. 16, 2007	NBR	M	10,000	$8.12	$81,200	248,038 Direct	+4.20%	Acquired	-77.4% (price as of 2026-08-20)
March 10, 2006	NBR	A	7,500	$63.90	$479,250	119,019 Direct	+6.73%	Acquired	-94.3% (price as of 2026-08-20)
Feb. 21, 2006	NBR	M	5,000	$13.38	$66,900	0 Direct	-100.00%	Disposed	-72.5% (price as of 2026-08-20)
Feb. 21, 2006	NBR	M	5,000	$13.38	$66,900	141,566 Direct	+3.66%	Acquired	-72.5% (price as of 2026-08-20)
June 7, 2005	NBR	A	10,000	$56.87	$568,700	136,566 Direct	+7.90%	Acquired	-93.5% (price as of 2026-08-20)
May 10, 2005	NBR	S	30,047	$54.96	$1,651,383	96,519 Direct	-23.74%	Disposed	-93.3% (price as of 2026-08-20)
April 14, 2005	NBR	S	36,300	$56.06	$2,034,978	126,566 Direct	-22.29%	Disposed	-93.4% (price as of 2026-08-20)
Feb. 8, 2005	NBR	M	5,000	$7.00	$35,000	0 Direct	-100.00%	Disposed	-47.5% (price as of 2026-08-20)
Feb. 8, 2005	NBR	M	5,000	$7.00	$35,000	162,866 Direct	+3.17%	Acquired	-47.5% (price as of 2026-08-20)
Feb. 20, 2004	NBR	A	35,000	$45.91	$1,606,850	35,000 Direct	—	Acquired	-92.0% (price as of 2026-08-20)
Feb. 20, 2004	NBR	A	45,000	$45.91	$2,065,950	45,000 Direct	—	Acquired	-92.0% (price as of 2026-08-20)
Feb. 3, 2004	NBR	M	5,000	$6.88	$34,400	0 Direct	-100.00%	Disposed	-46.6% (price as of 2026-08-20)
Feb. 3, 2004	NBR	M	5,000	$6.88	$34,400	157,866 Direct	+3.27%	Acquired	-46.6% (price as of 2026-08-20)
Sept. 12, 2003	NBR	M	0	$8.50	—	20,000 Direct	0.00%	Disposed	-56.8% (price as of 2026-08-20)
Sept. 12, 2003	NBR	M	20,000	$8.50	$170,000	152,866 Direct	+15.05%	Acquired	-56.8% (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
March 31, 2011	NBR	Stock Options (Right to Buy)	Common Stock (3,127)	$30.38	March 31, 2021	3,127	Acquired
Dec. 31, 2010	NBR	Stock Options (Right to Buy)	Common Stock (4,208)	$23.46	Dec. 31, 2020	4,208	Acquired
Dec. 3, 2010	NBR	Stock Options (Right to Buy)	Common Stock (45,000)	$22.78	Dec. 4, 2010	45,000	Disposed
Sept. 30, 2010	NBR	Stock Options (Right to Buy)	Common Stock (6,019)	$18.06	Sept. 30, 2020	6,019	Acquired
June 30, 2010	NBR	Stock Options (Right to Buy)	Common Stock (5,884)	$17.62	June 30, 2020	5,884	Acquired
April 5, 2010	NBR	Stock Options (Right to Buy)	Common Stock (4,841)	$20.64	April 5, 2020	4,841	Acquired
Dec. 2, 2009	NBR	Stock Options (Right to Buy)	Common Stock (35,000)	$12.38	Dec. 7, 2009	35,000	Disposed
Jan. 10, 2008	NBR	Stock Options (Right to buy)	Common Stock (10,000)	$12.47	March 3, 2008	10,000	Disposed
Jan. 10, 2008	NBR	Stock Options (Right to buy)	Common Stock (25,000)	$6.31	Dec. 30, 2008	25,000	Disposed
Feb. 16, 2007	NBR	Stock Options (Right to buy)	Common Stock (10,000)	$8.12	March 4, 2007	10,000	Disposed
Feb. 21, 2006	NBR	Stock Options (Right to buy)	Common Stock (5,000)	$13.38	March 5, 2006	5,000	Disposed
Feb. 8, 2005	NBR	Stock Options (Right to buy)	Common Stock (5,000)	$7.00	March 7, 2005	5,000	Disposed
Feb. 20, 2004	NBR	Stock Options (Right to buy)	Common Stock (35,000)	$45.91	Feb. 23, 2014	35,000	Acquired
Feb. 20, 2004	NBR	Stock Options (Right to buy)	Common Stock (45,000)	$45.91	Feb. 23, 2014	45,000	Acquired
Feb. 3, 2004	NBR	Stock Options (Right to buy)	Common Stock (5,000)	$6.88	March 1, 2004	5,000	Disposed
Sept. 12, 2003	NBR	Stock Options (Right to buy)	Common Stock (20,000)	$8.50	Sept. 14, 2003	0	Disposed

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