Laurie M Marsh

Insider

First SEC filing: Nov. 7, 2013 · Latest: Nov. 7, 2013

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

ECL selling Aug. 19, 2024

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 55 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

55 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
Aug. 19, 2024	ECL	M	10,364	$137.09	$1,420,801	34,811 Direct	+42.39%	Acquired	107.6% (price as of 2026-08-20)
Aug. 19, 2024	ECL	S	10,364	$240.83	$2,495,962	24,447 Direct	-29.77%	Disposed	18.2% (price as of 2026-08-20)
Aug. 19, 2024	ECL	M	10,364	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Aug. 3, 2024	ECL	M	4,305	—	—	26,411 Direct	+19.47%	Acquired	(price as of 2026-08-20)
Aug. 3, 2024	ECL	F	1,964	$238.12	$467,668	24,447 Direct	-7.44%	Disposed	19.5% (price as of 2026-08-20)
Aug. 3, 2024	ECL	M	4,305	—	—	4,305 Direct	-50.00%	Disposed	(price as of 2026-08-20)
Feb. 21, 2024	ECL	A	2,295	—	—	22,833 Direct	+11.17%	Acquired	(price as of 2026-08-20)
Feb. 21, 2024	ECL	F	727	$216.66	$157,512	22,106 Direct	-3.18%	Disposed	31.3% (price as of 2026-08-20)
Dec. 6, 2023	ECL	A	11,159	—	—	11,159 Direct	—	Acquired	(price as of 2026-08-20)
Dec. 4, 2023	ECL	M	11,917	$117.73	$1,402,988	32,455 Direct	+58.02%	Acquired	141.7% (price as of 2026-08-20)
Dec. 4, 2023	ECL	S	11,917	$191.41	$2,281,033	20,538 Direct	-36.72%	Disposed	48.7% (price as of 2026-08-20)
Dec. 4, 2023	ECL	M	11,917	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Aug. 3, 2023	ECL	M	4,305	—	—	21,955 Direct	+24.39%	Acquired	(price as of 2026-08-20)
Aug. 3, 2023	ECL	F	1,417	$183.11	$259,467	20,538 Direct	-6.45%	Disposed	55.4% (price as of 2026-08-20)
Aug. 3, 2023	ECL	M	4,305	—	—	8,610 Direct	-33.33%	Disposed	(price as of 2026-08-20)
March 1, 2023	ECL	F	664	$158.95	$105,543	17,650 Direct	-3.63%	Disposed	79.0% (price as of 2026-08-20)
Feb. 22, 2023	ECL	A	2,092	—	—	18,314 Direct	+12.90%	Acquired	(price as of 2026-08-20)
Dec. 7, 2022	ECL	A	19,056	—	—	19,056 Direct	—	Acquired	(price as of 2026-08-20)
Aug. 3, 2022	ECL	A	12,915	—	—	12,915 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 23, 2022	ECL	A	2,280	—	—	16,937 Direct	+15.56%	Acquired	(price as of 2026-08-20)
Feb. 23, 2022	ECL	F	721	$175.59	$126,600	16,216 Direct	-4.26%	Disposed	62.1% (price as of 2026-08-20)
Dec. 1, 2021	ECL	A	9,037	—	—	9,037 Direct	—	Acquired	(price as of 2026-08-20)
Aug. 27, 2021	ECL	M	11,536	$119.12	$1,374,168	26,193 Direct	+78.71%	Acquired	138.9% (price as of 2026-08-20)
Aug. 27, 2021	ECL	S	11,536	$225.03	$2,595,946	14,657 Direct	-44.04%	Disposed	26.5% (price as of 2026-08-20)
Aug. 27, 2021	ECL	M	11,536	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Feb. 26, 2021	ECL	F	712	$213.54	$152,040	14,657 Direct	-4.63%	Disposed	33.3% (price as of 2026-08-20)
Feb. 25, 2021	ECL	A	2,280	—	—	15,369 Direct	+17.42%	Acquired	(price as of 2026-08-20)
Dec. 3, 2020	ECL	A	10,434	—	—	10,434 Direct	—	Acquired	(price as of 2026-08-20)
June 1, 2020	ECL	M	12,235	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
June 1, 2020	ECL	S	9,142	$212.32	$1,941,029	13,089 Direct	-41.12%	Disposed	34.0% (price as of 2026-08-20)
June 1, 2020	ECL	S	3,093	$211.82	$655,159	22,231 Direct	-12.21%	Disposed	34.3% (price as of 2026-08-20)
June 1, 2020	ECL	M	12,235	$107.68	$1,317,465	25,324 Direct	+93.48%	Acquired	164.3% (price as of 2026-08-20)
Feb. 26, 2020	ECL	F	816	$195.74	$159,724	13,089 Direct	-5.87%	Disposed	45.4% (price as of 2026-08-20)
Feb. 26, 2020	ECL	A	2,622	—	—	13,905 Direct	+23.24%	Acquired	(price as of 2026-08-20)
Dec. 3, 2019	ECL	A	8,715	—	—	8,715 Direct	—	Acquired	(price as of 2026-08-20)
Nov. 8, 2019	ECL	M	8,610	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Nov. 8, 2019	ECL	M	5,400	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Nov. 8, 2019	ECL	S	6,000	$191.97	$1,151,820	11,283 Direct	-34.72%	Disposed	48.2% (price as of 2026-08-20)
Nov. 8, 2019	ECL	S	8,010	$191.25	$1,531,912	17,283 Direct	-31.67%	Disposed	48.8% (price as of 2026-08-20)
Nov. 8, 2019	ECL	M	8,610	$103.26	$889,069	25,293 Direct	+51.61%	Acquired	175.6% (price as of 2026-08-20)
Nov. 8, 2019	ECL	M	5,400	$71.54	$386,316	16,683 Direct	+47.86%	Acquired	297.8% (price as of 2026-08-20)
May 28, 2019	ECL	M	6,300	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
May 28, 2019	ECL	S	6,300	$182.04	$1,146,852	11,283 Direct	-35.83%	Disposed	56.3% (price as of 2026-08-20)
May 28, 2019	ECL	M	6,300	$55.60	$350,280	17,583 Direct	+55.84%	Acquired	411.8% (price as of 2026-08-20)
March 8, 2019	ECL	F	792	$166.22	$131,646	11,283 Direct	-6.56%	Disposed	71.2% (price as of 2026-08-20)
Feb. 21, 2019	ECL	A	2,538	—	—	12,075 Direct	+26.61%	Acquired	(price as of 2026-08-20)
Dec. 4, 2018	ECL	A	9,500	—	—	9,500 Direct	—	Acquired	(price as of 2026-08-20)
March 9, 2018	ECL	F	842	$131.18	$110,454	9,537 Direct	-8.11%	Disposed	116.9% (price as of 2026-08-20)
Feb. 21, 2018	ECL	A	2,692	—	—	10,379 Direct	+35.02%	Acquired	(price as of 2026-08-20)
Dec. 6, 2017	ECL	A	10,364	—	—	10,364 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 22, 2017	ECL	F	672	$122.89	$82,582	7,687 Direct	-8.04%	Disposed	131.6% (price as of 2026-08-20)
Feb. 22, 2017	ECL	A	1,894	—	—	8,359 Direct	+29.30%	Acquired	(price as of 2026-08-20)
Dec. 7, 2016	ECL	A	11,917	—	—	11,917 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 24, 2016	ECL	F	422	$100.46	$42,394	6,465 Direct	-6.13%	Disposed	183.3% (price as of 2026-08-20)
Feb. 24, 2016	ECL	A	1,180	—	—	6,887 Direct	+20.68%	Acquired	(price as of 2026-08-20)
Dec. 2, 2015	ECL	A	11,536	—	—	11,536 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 26, 2015	ECL	F	534	$115.62	$61,741	5,707 Direct	-8.56%	Disposed	146.1% (price as of 2026-08-20)
Feb. 26, 2015	ECL	A	1,520	—	—	6,241 Direct	+32.20%	Acquired	(price as of 2026-08-20)
Dec. 3, 2014	ECL	A	12,235	—	—	12,235 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 28, 2014	ECL	M	2,772	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Feb. 28, 2014	ECL	F	957	$107.75	$103,117	4,721 Direct	-16.85%	Disposed	164.1% (price as of 2026-08-20)
Feb. 28, 2014	ECL	M	2,772	—	—	5,678 Direct	+95.39%	Acquired	(price as of 2026-08-20)
Dec. 4, 2013	ECL	A	8,610	—	—	8,610 Direct	—	Acquired	(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
Aug. 19, 2024	ECL	Employee Stock Option (Right to Buy)	Common Stock (10,364)	$137.09	Dec. 6, 2027	10,364	Disposed
Aug. 3, 2024	ECL	Restricted Stock Units	Common Stock (4,305)	—	Aug. 3, 2025	4,305	Disposed
Dec. 6, 2023	ECL	Employee Stock Option (Right to Buy)	Common Stock (11,159)	$191.03	Dec. 6, 2033	11,159	Acquired
Dec. 4, 2023	ECL	Employee Stock Option (Right to Buy)	Common Stock (11,917)	$117.73	Dec. 7, 2026	11,917	Disposed
Aug. 3, 2023	ECL	Restricted Stock Units	Common Stock (4,305)	—	Aug. 3, 2025	4,305	Disposed
Dec. 7, 2022	ECL	Employee Stock Option (Right to Buy)	Common Stock (19,056)	$148.50	Dec. 7, 2032	19,056	Acquired
Aug. 3, 2022	ECL	Restricted Stock Units	Common Stock (12,915)	—	—	12,915	Acquired
Dec. 1, 2021	ECL	Employee Stock Option (Right to Buy)	Common Stock (9,037)	$223.78	Dec. 1, 2031	9,037	Acquired
Aug. 27, 2021	ECL	Employee Stock Option (Right to Buy)	Common Stock (11,536)	$119.12	Dec. 2, 2025	11,536	Disposed
Dec. 3, 2020	ECL	Employee Stock Option (Right to Buy)	Common Stock (10,434)	$221.41	Dec. 3, 2030	10,434	Acquired
June 1, 2020	ECL	Employee Stock Option (Right to Buy)	Common Stock (12,235)	$107.68	Dec. 3, 2024	12,235	Disposed
Dec. 3, 2019	ECL	Employee Stock Option (Right to Buy)	Common Stock (8,715)	$184.39	Dec. 3, 2029	8,715	Acquired
Nov. 8, 2019	ECL	Employee Stock Option (Right to Buy)	Common Stock (8,610)	$103.26	Dec. 4, 2023	8,610	Disposed
Nov. 8, 2019	ECL	Employee Stock Option (Right to Buy)	Common Stock (5,400)	$71.54	Dec. 5, 2022	5,400	Disposed
May 28, 2019	ECL	Employee Stock Option (Right to Buy)	Common Stock (6,300)	$55.60	Dec. 1, 2021	6,300	Disposed
Dec. 4, 2018	ECL	Employee Stock Option (Right to Buy)	Common Stock (9,500)	$158.51	Dec. 4, 2028	9,500	Acquired
Dec. 6, 2017	ECL	Employee Stock Option (Right to Buy)	Common Stock (10,364)	$137.09	Dec. 6, 2027	10,364	Acquired
Dec. 7, 2016	ECL	Employee Stock Option (Right to Buy)	Common Stock (11,917)	$117.73	Dec. 7, 2026	11,917	Acquired
Dec. 2, 2015	ECL	Employee Stock Option (Right to Buy)	Common Stock (11,536)	$119.12	Dec. 2, 2025	11,536	Acquired
Dec. 3, 2014	ECL	Employee Stock Option (Right to Buy)	Common Stock (12,235)	$107.68	Dec. 3, 2024	12,235	Acquired
Feb. 28, 2014	ECL	Restricted Stock Units	Common Stock (2,772)	—	Feb. 28, 2014	2,772	Disposed
Dec. 4, 2013	ECL	Employee Stock Option (Right to Buy)	Common Stock (8,610)	$103.26	Dec. 4, 2023	8,610	Acquired

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

Initial ownership (Form 3) 4 holdings

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

Date	Ticker	Security	Shares	Ownership
Nov. 7, 2013	ECL	Common Stock	2,906	Direct
Nov. 7, 2013	ECL	Restricted Stock Units→ Common Stock (2,772)	2,772	Direct
Nov. 7, 2013	ECL	Employee Stock Option (Right to Buy)→ Common Stock (6,300)	6,300	Direct
Nov. 7, 2013	ECL	Employee Stock Option (Right to Buy)→ Common Stock (5,400)	5,400	Direct