Deborah Marriott Harrison

Activist

First SEC filing: Jan. 20, 2026 · Latest: Jan. 20, 2026

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

Insider transactions

0 buys (P) 1 sells (S) Net: $-20,414,100 + 89 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

89 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
May 18, 2026	MAR	G	52	—	—	21,343 Indirect	+0.24%	Acquired	(price as of 2026-08-20)
May 11, 2026	MAR	A	670	—	—	1,962 Direct	+51.86%	Acquired	(price as of 2026-08-20)
May 8, 2026	MAR	G	52	—	—	43,631 Direct	+0.12%	Acquired	(price as of 2026-08-20)
May 8, 2026	MAR	G	52	—	—	16,799 Indirect	+0.31%	Acquired	(price as of 2026-08-20)
May 8, 2026	MAR	G	936	—	—	21,343 Indirect	+4.59%	Acquired	(price as of 2026-08-20)
Feb. 17, 2026	MAR	F	208	$358.30	$74,526	0 Indirect	-100.00%	Disposed	-0.2% (price as of 2026-08-20)
Dec. 12, 2025	MAR	G	2,757	—	—	34,856 Direct	-7.33%	Disposed	(price as of 2026-08-20)
Dec. 12, 2025	MAR	G	2,757	—	—	16,303 Indirect	-14.46%	Disposed	(price as of 2026-08-20)
Dec. 3, 2025	MAR	G	2,162	—	—	37,613 Direct	-5.44%	Disposed	(price as of 2026-08-20)
Dec. 3, 2025	MAR	G	2,162	—	—	20,152 Indirect	+12.02%	Acquired	(price as of 2026-08-20)
Dec. 3, 2025	MAR	G	123	—	—	20,275 Indirect	+0.61%	Acquired	(price as of 2026-08-20)
Nov. 14, 2025	MAR	G	2,244	—	—	18,122 Indirect	+14.13%	Acquired	(price as of 2026-08-20)
Nov. 14, 2025	MAR	G	132	—	—	39,644 Direct	+0.33%	Acquired	(price as of 2026-08-20)
Nov. 14, 2025	MAR	G	131	—	—	39,775 Direct	+0.33%	Acquired	(price as of 2026-08-20)
Nov. 14, 2025	MAR	G	132	—	—	19,060 Indirect	+0.70%	Acquired	(price as of 2026-08-20)
Nov. 14, 2025	MAR	G	2,112	—	—	17,990 Indirect	+13.30%	Acquired	(price as of 2026-08-20)
Nov. 11, 2025	MAR	S	70,000	$291.63	$20,414,100	175,210 Indirect	-28.55%	Disposed	22.7% (price as of 2026-08-20)
May 12, 2025	MAR	A	868	—	—	2,160 Direct	+67.18%	Acquired	(price as of 2026-08-20)
Feb. 18, 2025	MAR	F	486	$285.09	$138,554	652 Indirect	-42.71%	Disposed	25.5% (price as of 2026-08-20)
Dec. 20, 2024	MAR	G	125	—	—	17,846 Indirect	+0.71%	Acquired	(price as of 2026-08-20)
Dec. 20, 2024	MAR	G	2,000	—	—	15,878 Indirect	+14.41%	Acquired	(price as of 2026-08-20)
Dec. 20, 2024	MAR	G	125	—	—	54,765 Direct	+0.23%	Acquired	(price as of 2026-08-20)
Dec. 12, 2024	MAR	G	1,522	—	—	54,640 Direct	-2.71%	Disposed	(price as of 2026-08-20)
Dec. 12, 2024	MAR	G	1,522	—	—	17,721 Indirect	-7.91%	Disposed	(price as of 2026-08-20)
Nov. 13, 2024	MAR	G	1,968	—	—	56,162 Direct	-3.39%	Disposed	(price as of 2026-08-20)
Nov. 13, 2024	MAR	G	1,968	—	—	13,878 Indirect	+16.52%	Acquired	(price as of 2026-08-20)
Nov. 12, 2024	MAR	G	917	—	—	58,130 Direct	-1.55%	Disposed	(price as of 2026-08-20)
Nov. 12, 2024	MAR	G	917	—	—	19,243 Indirect	-4.55%	Disposed	(price as of 2026-08-20)
Nov. 6, 2024	MAR	G	142	—	—	59,047 Direct	+0.24%	Acquired	(price as of 2026-08-20)
May 13, 2024	MAR	A	837	—	—	2,129 Direct	+64.78%	Acquired	(price as of 2026-08-20)
May 3, 2024	MAR	A	7,588	$234.59	$1,780,069	54,717 Direct	+16.10%	Acquired	52.5% (price as of 2026-08-20)
May 3, 2024	MAR	F	4,445	$234.59	$1,042,753	50,272 Direct	-8.12%	Disposed	52.5% (price as of 2026-08-20)
May 3, 2024	MAR	M	7,588	$82.67	$627,300	0 Direct	-100.00%	Disposed	332.7% (price as of 2026-08-20)
March 27, 2024	MAR	J	71,651	—	—	0 Indirect	-100.00%	Disposed	(price as of 2026-08-20)
Feb. 16, 2024	MAR	S	37,300	$241.46	$9,006,458	9,100 Indirect	-80.39%	Disposed	48.1% (price as of 2026-08-20)
Feb. 15, 2024	MAR	F	1,307	$238.87	$312,203	2,220 Indirect	-37.06%	Disposed	49.7% (price as of 2026-08-20)
Dec. 14, 2023	MAR	G	4,550	—	—	47,129 Direct	-8.80%	Disposed	(price as of 2026-08-20)
Dec. 13, 2023	MAR	G	168	—	—	51,679 Direct	+0.33%	Acquired	(price as of 2026-08-20)
Nov. 27, 2023	MAR	G	2,560	—	—	51,511 Direct	-4.73%	Disposed	(price as of 2026-08-20)
Nov. 27, 2023	MAR	G	2,560	—	—	11,910 Indirect	+27.38%	Acquired	(price as of 2026-08-20)
Aug. 17, 2023	MAR	S	19,549	$205.35	$4,014,387	45,221 Direct	-30.18%	Disposed	74.2% (price as of 2026-08-20)
May 16, 2023	MAR	A	1,143	—	—	2,435 Direct	+88.47%	Acquired	(price as of 2026-08-20)
Feb. 15, 2023	MAR	F	33	$180.22	$5,947	0 Direct	-100.00%	Disposed	98.5% (price as of 2026-08-20)
Feb. 15, 2023	MAR	F	1,145	$180.22	$206,352	6,428 Indirect	-15.12%	Disposed	98.5% (price as of 2026-08-20)
May 19, 2022	MAR	G	63,290	—	—	0 Indirect	-100.00%	Disposed	(price as of 2026-08-20)
May 19, 2022	MAR	G	12,658	—	—	71,651 Indirect	+21.46%	Acquired	(price as of 2026-08-20)
May 19, 2022	MAR	G	12,658	—	—	57,420 Indirect	+28.28%	Acquired	(price as of 2026-08-20)
May 19, 2022	MAR	G	12,658	—	—	12,658 Indirect	—	Acquired	(price as of 2026-08-20)
May 19, 2022	MAR	G	64,248	—	—	0 Indirect	-100.00%	Disposed	(price as of 2026-08-20)
May 9, 2022	MAR	A	1,111	—	—	3,627 Direct	+44.16%	Acquired	(price as of 2026-08-20)
Feb. 17, 2022	MAR	A	2,896	$179.75	$520,556	11,314 Indirect	+34.40%	Acquired	99.0% (price as of 2026-08-20)
Feb. 15, 2022	MAR	F	200	$177.94	$35,588	104 Direct	-65.79%	Disposed	101.0% (price as of 2026-08-20)
Feb. 15, 2022	MAR	F	1,225	$177.94	$217,976	8,418 Indirect	-12.70%	Disposed	101.0% (price as of 2026-08-20)
Dec. 7, 2021	MAR	S	7,250	$157.65	$1,142,962	81,168 Indirect	-8.20%	Disposed	126.9% (price as of 2026-08-20)
Sept. 29, 2021	MAR	J	2,200,000	—	—	22,027,118 Indirect	-9.08%	Disposed	(price as of 2026-08-20)
Sept. 27, 2021	MAR	G	9,400	—	—	90,234 Direct	+11.63%	Acquired	(price as of 2026-08-20)
Sept. 27, 2021	MAR	G	9,400	—	—	11,982 Indirect	-43.96%	Disposed	(price as of 2026-08-20)
June 22, 2021	MAR	G	36,000	—	—	21,382 Indirect	-62.74%	Disposed	(price as of 2026-08-20)
June 22, 2021	MAR	G	36,000	—	—	245,210 Indirect	+17.21%	Acquired	(price as of 2026-08-20)
June 21, 2021	MAR	G	27,000	—	—	80,834 Direct	-25.04%	Disposed	(price as of 2026-08-20)
June 21, 2021	MAR	G	27,000	—	—	57,382 Indirect	+88.87%	Acquired	(price as of 2026-08-20)
May 13, 2021	MAR	S	360	$138.06	$49,702	96,440 Indirect	-0.37%	Disposed	159.1% (price as of 2026-08-20)
May 10, 2021	MAR	A	1,224	—	—	4,661 Direct	+35.61%	Acquired	(price as of 2026-08-20)
Feb. 22, 2021	MAR	A	3,664	$142.05	$520,471	9,908 Indirect	+58.68%	Acquired	151.8% (price as of 2026-08-20)
Feb. 22, 2021	MAR	A	2,464	$142.05	$350,011	12,372 Indirect	+24.87%	Acquired	151.8% (price as of 2026-08-20)
Feb. 16, 2021	MAR	F	464	$129.84	$60,246	746 Direct	-38.35%	Disposed	175.5% (price as of 2026-08-20)
Feb. 16, 2021	MAR	F	1,380	$129.84	$179,179	6,244 Indirect	-18.10%	Disposed	175.5% (price as of 2026-08-20)
Jan. 4, 2021	MAR	F	15	$127.74	$1,916	0 Indirect	-100.00%	Disposed	180.0% (price as of 2026-08-20)
Dec. 18, 2020	MAR	G	2,930	—	—	71,461 Direct	-3.94%	Disposed	(price as of 2026-08-20)
Dec. 18, 2020	MAR	G	2,930	—	—	9,350 Indirect	+45.64%	Acquired	(price as of 2026-08-20)
Nov. 30, 2020	MAR	G	237	—	—	74,391 Direct	+0.32%	Acquired	(price as of 2026-08-20)
Nov. 11, 2020	MAR	S	35,000	$116.19	$4,066,650	74,154 Direct	-32.06%	Disposed	207.8% (price as of 2026-08-20)
Nov. 11, 2020	MAR	S	8,700	$116.47	$1,013,289	27,285 Indirect	-24.18%	Disposed	207.1% (price as of 2026-08-20)
May 13, 2020	MAR	A	2,145	—	—	3,437 Direct	+166.02%	Acquired	(price as of 2026-08-20)
March 2, 2020	MAR	A	4,328	—	—	10,698 Indirect	+67.94%	Acquired	(price as of 2026-08-20)
Feb. 18, 2020	MAR	F	754	$145.05	$109,368	2,238 Direct	-25.20%	Disposed	146.6% (price as of 2026-08-20)
Feb. 18, 2020	MAR	F	1,566	$145.05	$227,148	6,370 Indirect	-19.73%	Disposed	146.6% (price as of 2026-08-20)
Jan. 2, 2020	MAR	F	8	$151.82	$1,215	38 Indirect	-17.39%	Disposed	135.6% (price as of 2026-08-20)
Dec. 16, 2019	MAR	A	3,681	—	—	28,425 Indirect	+14.88%	Acquired	(price as of 2026-08-20)
Dec. 16, 2019	MAR	M	16,124	—	—	0 Indirect	-100.00%	Disposed	(price as of 2026-08-20)
Dec. 2, 2019	MAR	G	213	—	—	269,641 Direct	+0.08%	Acquired	(price as of 2026-08-20)
May 13, 2019	MAR	A	1,292	—	—	1,292 Direct	—	Acquired	(price as of 2026-08-20)
March 5, 2019	MAR	A	2,408	—	—	6,657 Direct	+56.67%	Acquired	(price as of 2026-08-20)
March 5, 2019	MAR	A	4,168	—	—	11,425 Indirect	+57.43%	Acquired	(price as of 2026-08-20)
March 4, 2019	MAR	G	85,019	—	—	232,528 Direct	+57.64%	Acquired	(price as of 2026-08-20)
March 4, 2019	MAR	G	85,019	—	—	149,287 Indirect	+132.29%	Acquired	(price as of 2026-08-20)
Feb. 15, 2019	MAR	A	4,578	—	—	4,578 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 15, 2019	MAR	F	1,555	$120.20	$186,911	3,023 Direct	-33.97%	Disposed	197.6% (price as of 2026-08-20)
Feb. 15, 2019	MAR	F	721	$120.20	$86,664	4,249 Direct	-14.51%	Disposed	197.6% (price as of 2026-08-20)
Feb. 15, 2019	MAR	A	6,105	—	—	6,105 Indirect	—	Acquired	(price as of 2026-08-20)
Feb. 15, 2019	MAR	F	2,046	$120.20	$245,929	4,059 Indirect	-33.51%	Disposed	197.6% (price as of 2026-08-20)
Feb. 15, 2019	MAR	F	1,574	$120.20	$189,195	7,257 Indirect	-17.82%	Disposed	197.6% (price as of 2026-08-20)
Jan. 2, 2019	MAR	F	8	$106.94	$856	57 Indirect	-12.31%	Disposed	234.5% (price as of 2026-08-20)
Feb. 22, 2018	MAR	S	20,000	$140.73	$2,814,600	34,920 Indirect	-36.42%	Disposed	154.2% (price as of 2026-08-20)
Feb. 22, 2018	MAR	S	20,000	$139.89	$2,797,800	90,561 Indirect	-18.09%	Disposed	155.7% (price as of 2026-08-20)
Feb. 22, 2018	MAR	S	20,000	$141.20	$2,824,000	64,268 Indirect	-23.73%	Disposed	153.3% (price as of 2026-08-20)
Feb. 22, 2018	MAR	S	20,000	$141.93	$2,838,600	58,993 Indirect	-25.32%	Disposed	152.0% (price as of 2026-08-20)
Feb. 20, 2018	MAR	A	2,152	—	—	6,572 Direct	+48.69%	Acquired	(price as of 2026-08-20)
Feb. 20, 2018	MAR	A	3,656	—	—	11,270 Indirect	+48.02%	Acquired	(price as of 2026-08-20)
Feb. 15, 2018	MAR	F	773	$142.90	$110,462	4,420 Direct	-14.89%	Disposed	150.3% (price as of 2026-08-20)

Showing latest 100 of 365 transactions

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 3, 2024	MAR	Stock Appreciation Rights	Class A Common Stock (7,588)	$82.67	May 3, 2024	7,588	Disposed
Dec. 16, 2019	MAR	Stock Appreciation Rights	Class A Common Stock (16,124)	$82.67	Feb. 23, 2025	16,124	Disposed
Dec. 8, 2017	MAR	Stock Appreciation Rights	Class A Common Stock (30,716)	$34.67	—	30,716	Disposed
Dec. 8, 2017	MAR	Stock Appreciation Rights	Class A Common Stock (7,952)	$27.46	Feb. 15, 2020	7,952	Disposed
Dec. 8, 2017	MAR	Stock Appreciation Rights	Class A Common Stock (7,268)	$26.99	Feb. 16, 2020	7,268	Disposed
Dec. 8, 2017	MAR	Stock Appreciation Rights	Class A Common Stock (9,512)	$40.84	Feb. 17, 2022	9,512	Disposed
Dec. 8, 2017	MAR	Stock Appreciation Rights	Class A Common Stock (12,836)	$35.54	Feb. 19, 2018	12,836	Disposed
Dec. 8, 2017	MAR	Stock Appreciation Rights	Class A Common Stock (30,536)	$39.27	Feb. 22, 2023	30,536	Disposed
Feb. 23, 2015	MAR	Stock Appreciation Rights	Class A Common Stock (7,588)	$82.67	Feb. 23, 2025	7,588	Acquired
Feb. 23, 2015	MAR	Stock Appreciation Rights	Class A Common Stock (16,124)	$82.67	Feb. 23, 2025	16,124	Acquired
Oct. 31, 2014	MAR	Stock Option (Right to buy)	Class A Common Stock (10,000)	$16.58	Nov. 4, 2014	10,000	Disposed
Feb. 22, 2013	MAR	Stock Appreciation Rights	Class A Common Stock (30,536)	$39.27	Feb. 22, 2023	30,536	Acquired
Nov. 9, 2012	VAC	Stock Options (Right to Buy)	Common Stock (1,200)	$8.10	Nov. 5, 2013	1,200	Disposed
Nov. 9, 2012	MAR	Stock Option (Right to buy)	Class A Common Stock (12,000)	$14.10	Nov. 5, 2013	12,000	Disposed
Nov. 6, 2012	VAC	Stock Options (Right to Buy)	Common Stock (462)	$8.91	Nov. 6, 2012	462	Disposed
Nov. 6, 2012	VAC	Stock Options (Right to Buy)	Common Stock (462)	$8.77	Nov. 6, 2012	462	Disposed
Oct. 12, 2012	MAR	Stock Option (Right to buy)	Class A Common Stock (4,624)	$15.27	Nov. 6, 2012	4,624	Disposed
Oct. 12, 2012	MAR	Stock Option (Right to buy)	Class A Common Stock (4,624)	$15.52	Nov. 6, 2012	4,624	Disposed
Feb. 21, 2012	MAR	Stock Appreciation Rights	Class A Common Stock (30,716)	$34.67	—	30,716	Acquired
Feb. 17, 2011	MAR	Stock Appreciation Rights	Class A Common Stock (9,512)	$40.84	Feb. 17, 2022	9,512	Acquired
Dec. 22, 2010	MAR	Stock Option (Right to buy)	Class A Common Stock (5,064)	$12.34	Nov. 7, 2011	5,064	Disposed
Dec. 22, 2010	MAR	Stock Option (Right to buy)	Class A Common Stock (5,064)	$12.54	Nov. 7, 2011	5,064	Disposed
March 9, 2010	MAR	Stock Option (Right to buy)	Class A Common Stock (6,606)	$8.37	Nov. 2, 2010	6,606	Disposed
March 9, 2010	MAR	Stock Option (Right to buy)	Class A Common Stock (6,606)	$8.52	Nov. 2, 2010	6,606	Disposed
Feb. 16, 2010	MAR	Stock Appreciation Rights	Class A Common Stock (7,268)	$26.99	Feb. 16, 2020	7,268	Acquired
Aug. 21, 2009	MAR	Stock Option (Right to buy)	Class A Common Stock (8,146)	$6.56	Nov. 3, 2009	8,146	Disposed
Aug. 21, 2009	MAR	Stock Option (Right to buy)	Class A Common Stock (8,146)	$6.66	Nov. 3, 2009	8,146	Disposed
Oct. 9, 2008	MAR	Stock Option (Right to buy)	Class A Common Stock (9,248)	$5.97	Oct. 14, 2008	9,248	Disposed
Oct. 9, 2008	MAR	Stock Option (Right to buy)	Class A Common Stock (9,248)	$5.88	Oct. 14, 2008	9,248	Disposed
Aug. 7, 2008	MAR	Stock Appreciation Rights	Class A Common Stock (7,952)	$27.46	Feb. 15, 2020	7,952	Acquired
Feb. 19, 2008	MAR	Stock Appreciation Rights	Class A Common Stock (12,836)	$35.54	Feb. 19, 2018	12,836	Acquired
Dec. 11, 2006	MAR	Employee Stock Option	Class A Common Stock (10,568)	$1.83	Oct. 20, 2007	10,568	Disposed
Dec. 11, 2006	MAR	Employee Stock Option	Class A Common Stock (10,568)	$1.80	Oct. 20, 2007	10,568	Disposed
Sept. 21, 2006	MAR	Employee Stock Option	Class A Common Stock (6,826)	$2.99	Oct. 3, 2006	6,826	Disposed

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

Initial ownership (Form 3) 34 holdings

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

Date	Ticker	Security	Shares	Ownership
May 26, 2006	MAR	Class A Common Stock	309,065	Direct
May 26, 2006	MAR	Class A Common Stock	6,310	Direct
May 26, 2006	MAR	Class A Common Stock	41,889	Indirect
May 26, 2006	MAR	Class A Common Stock	20	Indirect
May 26, 2006	MAR	Class A Common Stock	5,230	Indirect
May 26, 2006	MAR	Class A Common Stock	4,203	Indirect
May 26, 2006	MAR	Class A Common Stock	1,215	Indirect
May 26, 2006	MAR	Class A Common Stock	6,655	Indirect
May 26, 2006	MAR	Class A Common Stock	38,058	Indirect
May 26, 2006	MAR	Class A Common Stock	36,471	Indirect
May 26, 2006	MAR	Class A Common Stock	28,311	Indirect
May 26, 2006	MAR	Class A Common Stock	27,156	Indirect
May 26, 2006	MAR	Class A Common Stock	23,768	Indirect
May 26, 2006	MAR	Class A Common Stock	5,413,980	Indirect
May 26, 2006	MAR	Class A Common Stock	6,600,000	Indirect
May 26, 2006	MAR	Class A Common Stock	344,170	Indirect
May 26, 2006	MAR	Class A Common Stock	399,470	Indirect
May 26, 2006	MAR	Class A Common Stock	510	Indirect
May 26, 2006	MAR	Restricted Stock Units	7,101	Indirect
May 26, 2006	MAR	Employee Stock Option→ Class A Common Stock (3,413)	3,413	Indirect
May 26, 2006	MAR	Employee Stock Option→ Class A Common Stock (5,284)	5,284	Indirect
May 26, 2006	MAR	Employee Stock Option→ Class A Common Stock (5,284)	5,284	Indirect
May 26, 2006	MAR	Employee Stock Option→ Class A Common Stock (4,624)	4,624	Indirect
May 26, 2006	MAR	Employee Stock Option→ Class A Common Stock (4,624)	4,624	Indirect
May 26, 2006	MAR	Employee Stock Option→ Class A Common Stock (4,073)	4,073	Indirect
May 26, 2006	MAR	Employee Stock Option→ Class A Common Stock (4,073)	4,073	Indirect
May 26, 2006	MAR	Employee Stock Option→ Class A Common Stock (3,303)	3,303	Indirect
May 26, 2006	MAR	Employee Stock Option→ Class A Common Stock (3,303)	3,303	Indirect
May 26, 2006	MAR	Employee Stock Option→ Class A Common Stock (2,532)	2,532	Indirect
May 26, 2006	MAR	Employee Stock Option→ Class A Common Stock (2,532)	2,532	Indirect
May 26, 2006	MAR	Employee Stock Option→ Class A Common Stock (2,312)	2,312	Indirect
May 26, 2006	MAR	Employee Stock Option→ Class A Common Stock (2,312)	2,312	Indirect
May 26, 2006	MAR	Employee Stock Option→ Class A Common Stock (6,000)	6,000	Indirect
May 26, 2006	MAR	Employee Stock Option→ Class A Common Stock (5,000)	5,000	Indirect