Lawrence D Mason

Insider

First SEC filing: Oct. 14, 2003 · Latest: Oct. 14, 2003

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.
Initial holdings The stakes this person held when they first started reporting.

Insider at

GT buying May 10, 2005

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 77 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

77 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
Feb. 21, 2008	GT	A	13,748	—	—	13,748 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 21, 2008	GT	A	11,384	—	—	11,384 Direct	—	Acquired	(price as of 2026-08-20)
Dec. 18, 2007	GT	A	2,976	—	—	2,976 Direct	—	Acquired	(price as of 2026-08-20)
Dec. 18, 2007	GT	M	3,750	—	—	7,500 Direct	-33.33%	Disposed	(price as of 2026-08-20)
Dec. 18, 2007	GT	A	1,422	—	—	1,422 Direct	—	Acquired	(price as of 2026-08-20)
Dec. 18, 2007	GT	M	2,050	—	—	2,050 Direct	-50.00%	Disposed	(price as of 2026-08-20)
Dec. 18, 2007	GT	A	916	—	—	916 Direct	—	Acquired	(price as of 2026-08-20)
Dec. 18, 2007	GT	M	1,950	—	—	1,950 Direct	-50.00%	Disposed	(price as of 2026-08-20)
Dec. 18, 2007	GT	A	1,708	—	—	1,708 Direct	—	Acquired	(price as of 2026-08-20)
Dec. 18, 2007	GT	M	3,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Dec. 18, 2007	GT	A	2,136	—	—	2,136 Direct	—	Acquired	(price as of 2026-08-20)
Dec. 18, 2007	GT	M	3,750	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Dec. 18, 2007	GT	M	3,750	$17.15	$64,312	27,035 Direct	+16.10%	Acquired	-65.7% (price as of 2026-08-20)
Dec. 18, 2007	GT	F	2,976	$26.68	$79,400	23,285 Direct	-11.33%	Disposed	-78.0% (price as of 2026-08-20)
Dec. 18, 2007	GT	M	2,050	$12.54	$25,707	26,261 Direct	+8.47%	Acquired	-53.1% (price as of 2026-08-20)
Dec. 18, 2007	GT	F	1,422	$26.68	$37,939	24,211 Direct	-5.55%	Disposed	-78.0% (price as of 2026-08-20)
Dec. 18, 2007	GT	M	1,950	$12.54	$24,453	25,633 Direct	+8.23%	Acquired	-53.1% (price as of 2026-08-20)
Dec. 18, 2007	GT	F	916	$26.68	$24,439	23,683 Direct	-3.72%	Disposed	-78.0% (price as of 2026-08-20)
Dec. 18, 2007	GT	M	3,000	$6.81	$20,430	24,599 Direct	+13.89%	Acquired	-13.7% (price as of 2026-08-20)
Dec. 18, 2007	GT	F	1,708	$26.68	$45,569	21,599 Direct	-7.33%	Disposed	-78.0% (price as of 2026-08-20)
Dec. 18, 2007	GT	M	3,750	$6.81	$25,538	23,307 Direct	+19.17%	Acquired	-13.7% (price as of 2026-08-20)
Dec. 18, 2007	GT	F	2,136	$26.68	$56,988	19,557 Direct	-9.85%	Disposed	-78.0% (price as of 2026-08-20)
March 5, 2007	GT	A	893	—	—	893 Direct	—	Acquired	(price as of 2026-08-20)
March 5, 2007	GT	M	1,950	—	—	3,900 Direct	-33.33%	Disposed	(price as of 2026-08-20)
March 5, 2007	GT	A	2,801	—	—	2,801 Direct	—	Acquired	(price as of 2026-08-20)
March 5, 2007	GT	M	3,750	—	—	11,250 Direct	-25.00%	Disposed	(price as of 2026-08-20)
March 5, 2007	GT	A	1,297	—	—	1,297 Direct	—	Acquired	(price as of 2026-08-20)
March 5, 2007	GT	M	2,050	—	—	4,100 Direct	-33.33%	Disposed	(price as of 2026-08-20)
March 5, 2007	GT	A	1,472	—	—	1,472 Direct	—	Acquired	(price as of 2026-08-20)
March 5, 2007	GT	M	3,000	—	—	3,000 Direct	-50.00%	Disposed	(price as of 2026-08-20)
March 5, 2007	GT	A	1,923	—	—	1,923 Direct	—	Acquired	(price as of 2026-08-20)
March 5, 2007	GT	M	3,750	—	—	3,750 Direct	-50.00%	Disposed	(price as of 2026-08-20)
March 5, 2007	GT	M	1,950	$12.54	$24,453	21,693 Direct	+9.88%	Acquired	-53.1% (price as of 2026-08-20)
March 5, 2007	GT	F	893	$27.37	$24,441	19,743 Direct	-4.33%	Disposed	-78.5% (price as of 2026-08-20)
March 5, 2007	GT	M	3,750	$17.15	$64,312	20,636 Direct	+22.21%	Acquired	-65.7% (price as of 2026-08-20)
March 5, 2007	GT	F	2,350	$27.37	$64,320	17,337 Direct	-11.94%	Disposed	-78.5% (price as of 2026-08-20)
March 5, 2007	GT	M	2,050	$12.54	$25,707	19,687 Direct	+11.62%	Acquired	-53.1% (price as of 2026-08-20)
March 5, 2007	GT	F	939	$27.37	$25,700	17,995 Direct	-4.96%	Disposed	-78.5% (price as of 2026-08-20)
March 5, 2007	GT	M	3,000	$6.81	$20,430	18,934 Direct	+18.83%	Acquired	-13.7% (price as of 2026-08-20)
March 5, 2007	GT	F	746	$27.37	$20,418	16,660 Direct	-4.29%	Disposed	-78.5% (price as of 2026-08-20)
March 5, 2007	GT	M	3,750	$6.81	$25,538	17,406 Direct	+27.46%	Acquired	-13.7% (price as of 2026-08-20)
March 5, 2007	GT	F	933	$27.37	$25,536	14,646 Direct	-5.99%	Disposed	-78.5% (price as of 2026-08-20)
March 1, 2007	GT	G	2,317	$24.41	$56,558	15,579 Direct	-12.95%	Disposed	-75.9% (price as of 2026-08-20)
Feb. 27, 2007	GT	A	15,000	—	—	15,000 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 27, 2007	GT	A	11,200	—	—	11,200 Direct	—	Acquired	(price as of 2026-08-20)
Oct. 13, 2006	GT	F	3,218	$14.52	$46,725	17,896 Direct	-15.24%	Disposed	-59.5% (price as of 2026-08-20)
March 31, 2006	GT	A	6,475	—	—	6,475 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 22, 2006	GT	A	6,800	—	—	6,800 Direct	—	Acquired	(price as of 2026-08-20)
Dec. 21, 2005	GT	F	1,440	$17.73	$25,531	15,877 Direct	-8.32%	Disposed	-66.8% (price as of 2026-08-20)
Dec. 21, 2005	GT	M	3,750	$6.81	$25,538	18,883 Direct	+24.78%	Acquired	-13.7% (price as of 2026-08-20)
Dec. 21, 2005	GT	F	1,152	$17.73	$20,425	17,731 Direct	-6.10%	Disposed	-66.8% (price as of 2026-08-20)
Dec. 21, 2005	GT	M	3,000	$6.81	$20,430	20,136 Direct	+17.51%	Acquired	-13.7% (price as of 2026-08-20)
Dec. 21, 2005	GT	F	1,379	$17.73	$24,450	18,757 Direct	-6.85%	Disposed	-66.8% (price as of 2026-08-20)
Dec. 21, 2005	GT	M	1,950	$12.54	$24,453	20,707 Direct	+10.40%	Acquired	-53.1% (price as of 2026-08-20)
Dec. 21, 2005	GT	F	1,449	$17.73	$25,691	19,258 Direct	-7.00%	Disposed	-66.8% (price as of 2026-08-20)
Dec. 21, 2005	GT	M	2,050	$12.54	$25,707	21,114 Direct	+10.75%	Acquired	-53.1% (price as of 2026-08-20)
Dec. 21, 2005	GT	M	3,750	—	—	7,500 Direct	-33.33%	Disposed	(price as of 2026-08-20)
Dec. 21, 2005	GT	A	2,184	—	—	2,184 Direct	—	Acquired	(price as of 2026-08-20)
Dec. 21, 2005	GT	M	3,000	—	—	6,000 Direct	-33.33%	Disposed	(price as of 2026-08-20)
Dec. 21, 2005	GT	A	1,747	—	—	1,747 Direct	—	Acquired	(price as of 2026-08-20)
Dec. 21, 2005	GT	M	1,950	—	—	5,850 Direct	-25.00%	Disposed	(price as of 2026-08-20)
Dec. 21, 2005	GT	A	1,379	—	—	1,379 Direct	—	Acquired	(price as of 2026-08-20)
Dec. 21, 2005	GT	M	2,050	—	—	6,150 Direct	-25.00%	Disposed	(price as of 2026-08-20)
Dec. 21, 2005	GT	A	1,643	—	—	1,643 Direct	—	Acquired	(price as of 2026-08-20)
Dec. 6, 2005	GT	A	15,000	—	—	15,000 Direct	—	Acquired	(price as of 2026-08-20)
May 17, 2005	GT	A	1,970	—	—	1,970 Direct	—	Acquired	(price as of 2026-08-20)
May 17, 2005	GT	M	3,000	—	—	9,000 Direct	-25.00%	Disposed	(price as of 2026-08-20)
May 17, 2005	GT	A	2,463	—	—	2,463 Direct	—	Acquired	(price as of 2026-08-20)
May 17, 2005	GT	M	3,750	—	—	11,250 Direct	-25.00%	Disposed	(price as of 2026-08-20)
May 17, 2005	GT	M	3,000	$6.81	$20,430	17,137 Direct	-14.90%	Disposed	-13.7% (price as of 2026-08-20)
May 17, 2005	GT	F	1,480	$13.80	$20,424	14,807 Direct	-9.09%	Disposed	-57.4% (price as of 2026-08-20)
May 17, 2005	GT	M	3,750	$6.81	$25,538	16,287 Direct	+29.91%	Acquired	-13.7% (price as of 2026-08-20)
May 17, 2005	GT	F	1,851	$13.80	$25,544	13,149 Direct	-12.34%	Disposed	-57.4% (price as of 2026-08-20)
May 10, 2005	GT	P	5,000	$13.29	$66,450	15,000 Direct	+50.00%	Acquired	-55.8% (price as of 2026-08-20)
Dec. 9, 2004	GT	A	8,200	—	—	8,200 Direct	—	Acquired	(price as of 2026-08-20)
Dec. 9, 2004	GT	A	7,800	—	—	7,800 Direct	—	Acquired	(price as of 2026-08-20)
Dec. 2, 2003	GT	A	15,000	—	—	15,000 Direct	—	Acquired	(price as of 2026-08-20)
Oct. 13, 2003	GT	A	10,000	$0.01	$100	10,000 Direct	—	Acquired	58700.0% (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
Feb. 21, 2008	GT	2005 Plan Option [F3]	Common Stock (13,748)	$26.74	Feb. 21, 2018	13,748	Acquired
Feb. 21, 2008	GT	2005 Plan Performance Units [F1]	Common Stock	—	—	11,384	Acquired
Dec. 18, 2007	GT	2005 Plan Option [F13]	Common Stock (2,976)	$26.68	Dec. 6, 2015	2,976	Acquired
Dec. 18, 2007	GT	2005 Plan Option [F18]	Common Stock (3,750)	$17.15	Dec. 6, 2015	3,750	Disposed
Dec. 18, 2007	GT	2002 Plan Option [F13]	Common Stock (1,422)	$26.68	Dec. 9, 2014	1,422	Acquired
Dec. 18, 2007	GT	2002 Plan Option [F17]	Common Stock (2,050)	$12.54	Dec. 9, 2014	2,050	Disposed
Dec. 18, 2007	GT	2002 Plan Option [F16]	Common Stock (916)	$26.68	Dec. 9, 2014	916	Acquired
Dec. 18, 2007	GT	2002 Plan Option [F15]	Common Stock (1,950)	$12.54	Dec. 9, 2014	1,950	Disposed
Dec. 18, 2007	GT	2002 Plan Option [F13]	Common Stock (1,708)	$26.68	Dec. 2, 2013	1,708	Acquired
Dec. 18, 2007	GT	2002 Plan Option [F14]	Common Stock (3,000)	$6.81	Dec. 2, 2013	3,000	Disposed
Dec. 18, 2007	GT	2002 Plan Option [F13]	Common Stock (2,136)	$26.68	Dec. 2, 2013	2,136	Acquired
Dec. 18, 2007	GT	2002 Plan Option [F11]	Common Stock (3,750)	$6.81	Dec. 2, 2013	3,750	Disposed
March 5, 2007	GT	2002 Plan Option [F17]	Common Stock (893)	$27.37	Dec. 9, 2014	893	Acquired
March 5, 2007	GT	2002 Plan Option [F16]	Common Stock (1,950)	$12.54	Dec. 9, 2014	1,950	Disposed
March 5, 2007	GT	2005 Plan Option [F13]	Common Stock (2,801)	$27.37	Dec. 6, 2015	2,801	Acquired
March 5, 2007	GT	2005 Plan Option [F15]	Common Stock (3,750)	$17.15	Dec. 6, 2015	3,750	Disposed
March 5, 2007	GT	2002 Plan Option [F13]	Common Stock (1,297)	$27.37	Dec. 9, 2014	1,297	Acquired
March 5, 2007	GT	2002 Plan Option [F14]	Common Stock (2,050)	$12.54	Dec. 9, 2014	2,050	Disposed
March 5, 2007	GT	2002 Plan Option [F13]	Common Stock (1,472)	$27.37	Dec. 2, 2013	1,472	Acquired
March 5, 2007	GT	2002 Plan Option [F11]	Common Stock (3,000)	$6.81	Dec. 2, 2013	3,000	Disposed
March 5, 2007	GT	2002 Plan Option [F13]	Common Stock (1,923)	$27.37	Dec. 2, 2013	1,923	Acquired
March 5, 2007	GT	2002 Plan Option [F11]	Common Stock (3,750)	$6.81	Dec. 2, 2013	3,750	Disposed
Feb. 27, 2007	GT	2005 Plan Option [F4]	Common Stock (15,000)	$24.71	Feb. 27, 2017	15,000	Acquired
Feb. 27, 2007	GT	2005 Plan Performance Units [F2]	Common Stock	—	—	11,200	Acquired
March 31, 2006	GT	2005 PRPA-CSE [F2]	Common Stock (6,475)	—	—	6,475	Acquired
Feb. 22, 2006	GT	2005 Performance Plan Units [F1]	Common Stock	—	—	6,800	Acquired
Dec. 21, 2005	GT	2002 Plan Option [F9]	Common Stock (3,750)	$6.81	Dec. 2, 2013	3,750	Disposed
Dec. 21, 2005	GT	2002 Plan Option [F11]	Common Stock (2,184)	$17.73	Dec. 2, 2013	2,184	Acquired
Dec. 21, 2005	GT	2002 Plan Option [F9]	Common Stock (3,000)	$6.81	Dec. 2, 2013	3,000	Disposed
Dec. 21, 2005	GT	2002 Plan Option [F11]	Common Stock (1,747)	$17.73	Dec. 2, 2013	1,747	Acquired
Dec. 21, 2005	GT	2002 Plan Option [F6]	Common Stock (1,950)	$12.54	Dec. 9, 2014	1,950	Disposed
Dec. 21, 2005	GT	2002 Plan Option [F11]	Common Stock (1,379)	$17.73	Dec. 9, 2014	1,379	Acquired
Dec. 21, 2005	GT	2002 Plan Option [F12]	Common Stock (2,050)	$12.54	Dec. 9, 2014	2,050	Disposed
Dec. 21, 2005	GT	2002 Plan Option [F11]	Common Stock (1,643)	$17.73	Dec. 9, 2014	1,643	Acquired
Dec. 6, 2005	GT	2005 Plan Option [F2]	Common Stock (15,000)	$17.15	Dec. 6, 2015	15,000	Acquired
May 17, 2005	GT	2002 Plan Option [F7]	Common Stock (1,970)	$13.80	Dec. 2, 2013	1,970	Acquired
May 17, 2005	GT	2002 Plan Option [F5]	Common Stock (3,000)	$6.81	Dec. 2, 2013	3,000	Disposed
May 17, 2005	GT	2002 Plan Option [F7]	Common Stock (2,463)	$13.80	Dec. 2, 2013	2,463	Acquired
May 17, 2005	GT	2002 Plan Option [F5]	Common Stock (3,750)	$6.81	Dec. 2, 2013	3,750	Disposed
Dec. 9, 2004	GT	2002 Plan Option [F4]	Common Stock (8,200)	$12.54	Dec. 9, 2014	8,200	Acquired
Dec. 9, 2004	GT	2002 Plan Option [F2]	Common Stock (7,800)	$12.54	Dec. 9, 2014	7,800	Acquired
Dec. 2, 2003	GT	2002 Plan Option [F1]	Common Stock (15,000)	$6.81	Dec. 2, 2013	15,000	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
Oct. 14, 2003	GT	Common Stock	0	Direct