Seth H Bagshaw

CIK 1192439 · View on SEC EDGAR ↗

Insider

First SEC filing: Jan. 8, 2010 · Latest: Jan. 8, 2010

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.
Compensation Executive pay disclosed in company proxy statements.

Insider at

MKSI selling Feb. 22, 2024

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 85 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

85 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
Feb. 22, 2024	MKSI	S	1,000	$124.56	$124,560	1 Direct	-99.90%	Disposed	121.6% (price as of 2026-08-20)
Feb. 22, 2024	MKSI	S	11,612	$124.02	$1,440,120	1,001 Direct	-92.06%	Disposed	122.5% (price as of 2026-08-20)
Feb. 22, 2024	MKSI	S	20,253	$122.79	$2,486,866	12,613 Direct	-61.62%	Disposed	124.8% (price as of 2026-08-20)
Feb. 15, 2024	MKSI	M	2,762	—	—	25,671 Direct	-9.71%	Disposed	(price as of 2026-08-20)
Feb. 15, 2024	MKSI	M	6,791	—	—	28,433 Direct	-19.28%	Disposed	(price as of 2026-08-20)
Feb. 15, 2024	MKSI	M	2,430	—	—	35,224 Direct	-6.45%	Disposed	(price as of 2026-08-20)
Feb. 15, 2024	MKSI	M	4,129	—	—	37,654 Direct	-9.88%	Disposed	(price as of 2026-08-20)
Feb. 15, 2024	MKSI	M	1,525	—	—	41,783 Direct	-3.52%	Disposed	(price as of 2026-08-20)
Feb. 15, 2024	MKSI	M	3,729	—	—	43,308 Direct	-7.93%	Disposed	(price as of 2026-08-20)
Feb. 15, 2024	MKSI	F	9,173	$122.15	$1,120,482	32,866 Direct	-21.82%	Disposed	125.9% (price as of 2026-08-20)
Feb. 15, 2024	MKSI	M	2,762	—	—	42,039 Direct	+7.03%	Acquired	(price as of 2026-08-20)
Feb. 15, 2024	MKSI	M	6,791	—	—	39,277 Direct	+20.90%	Acquired	(price as of 2026-08-20)
Feb. 15, 2024	MKSI	M	2,430	—	—	32,486 Direct	+8.08%	Acquired	(price as of 2026-08-20)
Feb. 15, 2024	MKSI	M	4,129	—	—	30,056 Direct	+15.93%	Acquired	(price as of 2026-08-20)
Feb. 15, 2024	MKSI	M	1,525	—	—	25,927 Direct	+6.25%	Acquired	(price as of 2026-08-20)
Feb. 15, 2024	MKSI	M	3,729	—	—	24,402 Direct	+18.04%	Acquired	(price as of 2026-08-20)
Feb. 5, 2024	MKSI	A	20,375	—	—	47,037 Direct	+76.42%	Acquired	(price as of 2026-08-20)
Dec. 1, 2023	MKSI	M	350	—	—	26,662 Direct	-1.30%	Disposed	(price as of 2026-08-20)
Dec. 1, 2023	MKSI	M	349	—	—	27,012 Direct	-1.28%	Disposed	(price as of 2026-08-20)
Dec. 1, 2023	MKSI	F	699	$84.19	$58,849	20,673 Direct	-3.27%	Disposed	227.8% (price as of 2026-08-20)
Dec. 1, 2023	MKSI	M	350	—	—	21,372 Direct	+1.66%	Acquired	(price as of 2026-08-20)
Dec. 1, 2023	MKSI	M	349	—	—	21,022 Direct	+1.69%	Acquired	(price as of 2026-08-20)
Sept. 6, 2023	MKSI	S	7,073	$97.66	$690,749	20,547 Direct	-25.61%	Disposed	182.6% (price as of 2026-08-20)
Sept. 6, 2023	MKSI	S	17,927	$97.16	$1,741,787	27,620 Direct	-39.36%	Disposed	184.1% (price as of 2026-08-20)
Feb. 15, 2023	MKSI	M	2,431	—	—	27,361 Direct	-8.16%	Disposed	(price as of 2026-08-20)
Feb. 15, 2023	MKSI	M	4,303	—	—	29,792 Direct	-12.62%	Disposed	(price as of 2026-08-20)
Feb. 15, 2023	MKSI	M	1,525	—	—	34,095 Direct	-4.28%	Disposed	(price as of 2026-08-20)
Feb. 15, 2023	MKSI	M	3,729	—	—	35,620 Direct	-9.48%	Disposed	(price as of 2026-08-20)
Feb. 15, 2023	MKSI	M	2,180	—	—	39,349 Direct	-5.25%	Disposed	(price as of 2026-08-20)
Feb. 15, 2023	MKSI	M	3,837	—	—	41,529 Direct	-8.46%	Disposed	(price as of 2026-08-20)
Feb. 15, 2023	MKSI	A	8,637	—	—	45,366 Direct	+23.52%	Acquired	(price as of 2026-08-20)
Feb. 15, 2023	MKSI	F 10b5-1	6,976	$100.29	$699,623	45,396 Direct	-13.32%	Disposed	175.2% (price as of 2026-08-20)
Feb. 15, 2023	MKSI	M	2,431	—	—	52,372 Direct	+4.87%	Acquired	(price as of 2026-08-20)
Feb. 15, 2023	MKSI	M	4,303	—	—	49,942 Direct	+9.43%	Acquired	(price as of 2026-08-20)
Feb. 15, 2023	MKSI	M	1,525	—	—	45,638 Direct	+3.46%	Acquired	(price as of 2026-08-20)
Feb. 15, 2023	MKSI	M	3,729	—	—	44,114 Direct	+9.23%	Acquired	(price as of 2026-08-20)
Feb. 15, 2023	MKSI	M	2,180	—	—	40,384 Direct	+5.71%	Acquired	(price as of 2026-08-20)
Feb. 15, 2023	MKSI	M	3,837	—	—	38,205 Direct	+11.16%	Acquired	(price as of 2026-08-20)
Feb. 8, 2023	MKSI	A	12,912	—	—	36,729 Direct	+54.21%	Acquired	(price as of 2026-08-20)
Dec. 2, 2022	MKSI	M	315	—	—	34,683 Direct	+0.92%	Acquired	(price as of 2026-08-20)
Dec. 2, 2022	MKSI	M	308	—	—	34,991 Direct	+0.89%	Acquired	(price as of 2026-08-20)
Dec. 2, 2022	MKSI	F	623	$83.86	$52,245	34,368 Direct	-1.78%	Disposed	229.1% (price as of 2026-08-20)
Dec. 2, 2022	MKSI	M	315	—	—	24,125 Direct	-1.29%	Disposed	(price as of 2026-08-20)
Dec. 2, 2022	MKSI	M	308	—	—	23,817 Direct	-1.28%	Disposed	(price as of 2026-08-20)
Oct. 28, 2022	MKSI	M	4,358	—	—	24,440 Direct	-15.13%	Disposed	(price as of 2026-08-20)
Oct. 28, 2022	MKSI	F 10b5-1	1,933	$84.58	$163,493	34,291 Direct	-5.34%	Disposed	226.3% (price as of 2026-08-20)
Oct. 28, 2022	MKSI	M	4,358	—	—	36,224 Direct	+13.68%	Acquired	(price as of 2026-08-20)
April 29, 2022	MKSI	A	7,600	—	—	28,798 Direct	+35.85%	Acquired	(price as of 2026-08-20)
Feb. 15, 2022	MKSI	M	2,643	—	—	27,576 Direct	+10.60%	Acquired	(price as of 2026-08-20)
Feb. 15, 2022	MKSI	M	1,525	—	—	21,198 Direct	-6.71%	Disposed	(price as of 2026-08-20)
Feb. 15, 2022	MKSI	M	3,885	—	—	22,723 Direct	-14.60%	Disposed	(price as of 2026-08-20)
Feb. 15, 2022	MKSI	M	2,180	—	—	26,608 Direct	-7.57%	Disposed	(price as of 2026-08-20)
Feb. 15, 2022	MKSI	M	3,837	—	—	28,788 Direct	-11.76%	Disposed	(price as of 2026-08-20)
Feb. 15, 2022	MKSI	M	2,643	—	—	32,625 Direct	-7.49%	Disposed	(price as of 2026-08-20)
Feb. 15, 2022	MKSI	M	2,941	—	—	35,268 Direct	-7.70%	Disposed	(price as of 2026-08-20)
Feb. 15, 2022	MKSI	F 10b5-1	7,238	$152.55	$1,104,157	31,765 Direct	-18.56%	Disposed	80.9% (price as of 2026-08-20)
Feb. 15, 2022	MKSI	M	1,525	—	—	39,003 Direct	+4.07%	Acquired	(price as of 2026-08-20)
Feb. 15, 2022	MKSI	M	3,885	—	—	37,478 Direct	+11.56%	Acquired	(price as of 2026-08-20)
Feb. 15, 2022	MKSI	M	2,180	—	—	33,593 Direct	+6.94%	Acquired	(price as of 2026-08-20)
Feb. 15, 2022	MKSI	M	3,837	—	—	31,413 Direct	+13.91%	Acquired	(price as of 2026-08-20)
Feb. 15, 2022	MKSI	M	2,941	—	—	24,933 Direct	+13.37%	Acquired	(price as of 2026-08-20)
Jan. 21, 2022	MKSI	A	11,658	—	—	38,209 Direct	+43.91%	Acquired	(price as of 2026-08-20)
Dec. 3, 2021	MKSI	M	194	—	—	26,551 Direct	-0.73%	Disposed	(price as of 2026-08-20)
Dec. 3, 2021	MKSI	M	325	—	—	26,745 Direct	-1.20%	Disposed	(price as of 2026-08-20)
Dec. 3, 2021	MKSI	F	519	$156.09	$81,011	21,992 Direct	-2.31%	Disposed	76.8% (price as of 2026-08-20)
Dec. 3, 2021	MKSI	M	194	—	—	22,511 Direct	+0.87%	Acquired	(price as of 2026-08-20)
Dec. 3, 2021	MKSI	M	325	—	—	22,317 Direct	+1.48%	Acquired	(price as of 2026-08-20)
Oct. 28, 2021	MKSI	M	4,358	—	—	27,070 Direct	-13.87%	Disposed	(price as of 2026-08-20)
Oct. 28, 2021	MKSI	F 10b5-1	1,933	$145.74	$281,715	21,925 Direct	-8.10%	Disposed	89.4% (price as of 2026-08-20)
Oct. 28, 2021	MKSI	M	4,358	—	—	23,858 Direct	+22.35%	Acquired	(price as of 2026-08-20)
April 15, 2021	MKSI	S 10b5-1	200	$188.40	$37,680	19,410 Direct	-1.02%	Disposed	46.5% (price as of 2026-08-20)
April 15, 2021	MKSI	S 10b5-1	4,955	$187.78	$930,450	19,610 Direct	-20.17%	Disposed	47.0% (price as of 2026-08-20)
April 15, 2021	MKSI	S 10b5-1	1,741	$186.65	$324,958	24,565 Direct	-6.62%	Disposed	47.9% (price as of 2026-08-20)
April 15, 2021	MKSI	S 10b5-1	704	$185.39	$130,515	26,306 Direct	-2.61%	Disposed	48.9% (price as of 2026-08-20)
April 15, 2021	MKSI	S 10b5-1	1,400	$184.36	$258,104	27,010 Direct	-4.93%	Disposed	49.7% (price as of 2026-08-20)
Feb. 16, 2021	MKSI	M	2,202	—	—	21,490 Direct	+11.42%	Acquired	(price as of 2026-08-20)
Feb. 16, 2021	MKSI	M	1,871	—	—	23,361 Direct	+8.71%	Acquired	(price as of 2026-08-20)
Feb. 16, 2021	MKSI	M	2,942	—	—	26,303 Direct	+12.59%	Acquired	(price as of 2026-08-20)
Feb. 16, 2021	MKSI	M	2,643	—	—	28,945 Direct	+10.05%	Acquired	(price as of 2026-08-20)
Feb. 16, 2021	MKSI	M	3,999	—	—	32,944 Direct	+13.82%	Acquired	(price as of 2026-08-20)
Feb. 16, 2021	MKSI	M	2,180	—	—	35,124 Direct	+6.62%	Acquired	(price as of 2026-08-20)
Feb. 16, 2021	MKSI	F 10b5-1	6,714	$172.20	$1,156,151	28,410 Direct	-19.12%	Disposed	60.3% (price as of 2026-08-20)
Feb. 16, 2021	MKSI	A	4,769	—	—	47,264 Direct	+11.22%	Acquired	(price as of 2026-08-20)
Feb. 16, 2021	MKSI	M	2,202	—	—	45,062 Direct	-4.66%	Disposed	(price as of 2026-08-20)
Feb. 16, 2021	MKSI	M	1,871	—	—	43,191 Direct	-4.15%	Disposed	(price as of 2026-08-20)
Feb. 16, 2021	MKSI	M	2,942	—	—	40,250 Direct	-6.81%	Disposed	(price as of 2026-08-20)
Feb. 16, 2021	MKSI	M	2,643	—	—	37,607 Direct	-6.57%	Disposed	(price as of 2026-08-20)
Feb. 16, 2021	MKSI	M	3,999	—	—	33,608 Direct	-10.63%	Disposed	(price as of 2026-08-20)
Feb. 16, 2021	MKSI	M	2,180	—	—	31,428 Direct	-6.49%	Disposed	(price as of 2026-08-20)
Jan. 25, 2021	MKSI	A	11,998	—	—	42,494 Direct	+39.34%	Acquired	(price as of 2026-08-20)
Dec. 4, 2020	MKSI	M	277	—	—	30,496 Direct	-0.90%	Disposed	(price as of 2026-08-20)
Dec. 4, 2020	MKSI	M	249	—	—	30,773 Direct	-0.80%	Disposed	(price as of 2026-08-20)
Dec. 4, 2020	MKSI	F	526	$151.71	$79,799	19,289 Direct	-2.65%	Disposed	81.9% (price as of 2026-08-20)
Dec. 4, 2020	MKSI	M	277	—	—	19,815 Direct	+1.42%	Acquired	(price as of 2026-08-20)
Dec. 4, 2020	MKSI	M	249	—	—	19,538 Direct	+1.29%	Acquired	(price as of 2026-08-20)
July 23, 2020	MKSI	S 10b5-1	2,062	$123.57	$254,801	22,102 Direct	-8.53%	Disposed	123.3% (price as of 2026-08-20)
July 23, 2020	MKSI	S 10b5-1	1,493	$125.09	$186,759	20,609 Direct	-6.76%	Disposed	120.6% (price as of 2026-08-20)
July 23, 2020	MKSI	S 10b5-1	1,440	$126.07	$181,541	19,169 Direct	-6.99%	Disposed	118.9% (price as of 2026-08-20)
July 22, 2020	MKSI	S 10b5-1	5	$123.00	$615	24,164 Direct	-0.02%	Disposed	124.4% (price as of 2026-08-20)
July 6, 2020	MKSI	S 10b5-1	5,000	$116.84	$584,200	24,169 Direct	-17.14%	Disposed	136.2% (price as of 2026-08-20)

Showing latest 100 of 324 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
Feb. 15, 2024	MKSI	Restricted Stock Unit	Common Stock (2,762)	—	—	2,762	Disposed
Feb. 15, 2024	MKSI	Restricted Stock Unit	Common Stock (6,791)	—	—	6,791	Disposed
Feb. 15, 2024	MKSI	Restricted Stock Unit	Common Stock (2,430)	—	—	2,430	Disposed
Feb. 15, 2024	MKSI	Restricted Stock Unit	Common Stock (4,129)	—	—	4,129	Disposed
Feb. 15, 2024	MKSI	Restricted Stock Unit	Common Stock (1,525)	—	—	1,525	Disposed
Feb. 15, 2024	MKSI	Restricted Stock Unit	Common Stock (3,729)	—	—	3,729	Disposed
Feb. 5, 2024	MKSI	Restricted Stock Unit	Common Stock (20,375)	—	—	20,375	Acquired
Dec. 1, 2023	MKSI	Restricted Stock Unit	Common Stock (350)	—	—	350	Disposed
Dec. 1, 2023	MKSI	Restricted Stock Unit	Common Stock (349)	—	—	349	Disposed
Feb. 15, 2023	MKSI	Restricted Stock Unit	Common Stock (2,431)	—	—	2,431	Disposed
Feb. 15, 2023	MKSI	Restricted Stock Unit	Common Stock (4,303)	—	—	4,303	Disposed
Feb. 15, 2023	MKSI	Restricted Stock Unit	Common Stock (1,525)	—	—	1,525	Disposed
Feb. 15, 2023	MKSI	Restricted Stock Unit	Common Stock (3,729)	—	—	3,729	Disposed
Feb. 15, 2023	MKSI	Restricted Stock Unit	Common Stock (2,180)	—	—	2,180	Disposed
Feb. 15, 2023	MKSI	Restricted Stock Unit	Common Stock (3,837)	—	—	3,837	Disposed
Feb. 15, 2023	MKSI	Restricted Stock Unit	Common Stock (8,637)	—	—	8,637	Acquired
Feb. 8, 2023	MKSI	Restricted Stock Unit	Common Stock (12,912)	—	—	12,912	Acquired
Dec. 2, 2022	MKSI	Restricted Stock Unit	Common Stock (315)	—	—	315	Disposed
Dec. 2, 2022	MKSI	Restricted Stock Unit	Common Stock (308)	—	—	308	Disposed
Oct. 28, 2022	MKSI	Restricted Stock Unit	Common Stock (4,358)	—	—	4,358	Disposed
April 29, 2022	MKSI	Restricted Stock Unit	Common Stock (7,600)	—	—	7,600	Acquired
Feb. 15, 2022	MKSI	Restricted Stock Unit	Common Stock (1,525)	—	—	1,525	Disposed
Feb. 15, 2022	MKSI	Restricted Stock Unit	Common Stock (3,885)	—	—	3,885	Disposed
Feb. 15, 2022	MKSI	Restricted Stock Unit	Common Stock (2,180)	—	—	2,180	Disposed
Feb. 15, 2022	MKSI	Restricted Stock Unit	Common Stock (3,837)	—	—	3,837	Disposed
Feb. 15, 2022	MKSI	Restricted Stock Unit	Common Stock (2,643)	—	—	2,643	Disposed
Feb. 15, 2022	MKSI	Restricted Stock Unit	Common Stock (2,941)	—	—	2,941	Disposed
Jan. 21, 2022	MKSI	Restricted Stock Unit	Common Stock (11,658)	—	—	11,658	Acquired
Dec. 3, 2021	MKSI	Restricted Stock Unit	Common Stock (194)	—	—	194	Disposed
Dec. 3, 2021	MKSI	Restricted Stock Unit	Common Stock (325)	—	—	325	Disposed
Oct. 28, 2021	MKSI	Restricted Stock Unit	Common Stock (4,358)	—	—	4,358	Disposed
Feb. 16, 2021	MKSI	Restricted Stock Unit	Common Stock (4,769)	—	—	4,769	Acquired
Feb. 16, 2021	MKSI	Restricted Stock Unit	Common Stock (2,202)	—	—	2,202	Disposed
Feb. 16, 2021	MKSI	Restricted Stock Unit	Common Stock (1,871)	—	—	1,871	Disposed
Feb. 16, 2021	MKSI	Restricted Stock Unit	Common Stock (2,942)	—	—	2,942	Disposed
Feb. 16, 2021	MKSI	Restricted Stock Unit	Common Stock (2,643)	—	—	2,643	Disposed
Feb. 16, 2021	MKSI	Restricted Stock Unit	Common Stock (3,999)	—	—	3,999	Disposed
Feb. 16, 2021	MKSI	Restricted Stock Unit	Common Stock (2,180)	—	—	2,180	Disposed
Jan. 25, 2021	MKSI	Restricted Stock Unit	Common Stock (11,998)	—	—	11,998	Acquired
Dec. 4, 2020	MKSI	Restricted Stock Unit	Common Stock (277)	—	—	277	Disposed
Dec. 4, 2020	MKSI	Restricted Stock Unit	Common Stock (249)	—	—	249	Disposed
Feb. 18, 2020	MKSI	Restricted Stock Unit	Common Stock (2,643)	—	—	2,643	Disposed
Feb. 18, 2020	MKSI	Restricted Stock Unit	Common Stock (3,066)	—	—	3,066	Disposed
Feb. 18, 2020	MKSI	Restricted Stock Unit	Common Stock (1,871)	—	—	1,871	Disposed
Feb. 18, 2020	MKSI	Restricted Stock Unit	Common Stock (2,202)	—	—	2,202	Disposed
Feb. 18, 2020	MKSI	Restricted Stock Unit	Common Stock (2,835)	—	—	2,835	Disposed
Feb. 18, 2020	MKSI	Restricted Stock Unit	Common Stock (3,430)	—	—	3,430	Disposed
Feb. 18, 2020	MKSI	Restricted Stock Unit	Common Stock (6,817)	—	—	6,817	Acquired
Jan. 27, 2020	MKSI	Restricted Stock Unit	Common Stock (9,197)	—	—	9,197	Acquired
Dec. 6, 2019	MKSI	Restricted Stock Unit	Common Stock (336)	—	—	336	Disposed
Dec. 6, 2019	MKSI	Restricted Stock Unit	Common Stock (187)	—	—	187	Disposed
Dec. 6, 2019	MKSI	Restricted Stock Unit	Common Stock (159)	—	—	159	Disposed
Dec. 6, 2019	MKSI	Restricted Stock Unit	Common Stock (145)	—	—	145	Disposed
Dec. 6, 2019	MKSI	Restricted Stock Unit	Common Stock (120)	—	—	120	Disposed
Oct. 28, 2019	MKSI	Restricted Stock Unit	Common Stock (8,716)	—	—	8,716	Acquired
Feb. 15, 2019	MKSI	Restricted Stock Unit	Common Stock (1,950)	—	—	1,950	Disposed
Feb. 15, 2019	MKSI	Restricted Stock Unit	Common Stock (2,295)	—	—	2,295	Disposed
Feb. 15, 2019	MKSI	Restricted Stock Unit	Common Stock (2,954)	—	—	2,954	Disposed
Feb. 15, 2019	MKSI	Restricted Stock Unit	Common Stock (3,575)	—	—	3,575	Disposed
Feb. 15, 2019	MKSI	Restricted Stock Unit	Common Stock (4,516)	—	—	4,516	Disposed
Feb. 15, 2019	MKSI	Restricted Stock Unit	Common Stock (6,914)	—	—	6,914	Disposed
Feb. 15, 2019	MKSI	Restricted Stock Unit	Common Stock (8,264)	—	—	8,264	Acquired
Jan. 28, 2019	MKSI	Restricted Stock Unit	Common Stock (3,240)	—	—	3,240	Disposed
Feb. 15, 2018	MKSI	Restricted Stock Unit	Common Stock (5,234)	—	—	5,234	Disposed
Feb. 15, 2018	MKSI	Restricted Stock Unit	Common Stock (3,783)	—	—	3,783	Disposed
Feb. 15, 2018	MKSI	Restricted Stock Unit	Common Stock (6,914)	—	—	6,914	Disposed
Feb. 15, 2018	MKSI	Restricted Stock Unit	Common Stock (4,515)	—	—	4,515	Disposed
Feb. 15, 2018	MKSI	Restricted Stock Unit	Common Stock (2,954)	—	—	2,954	Disposed
Feb. 15, 2018	MKSI	Restricted Stock Unit	Common Stock (3,574)	—	—	3,574	Disposed
Feb. 15, 2018	MKSI	Restricted Stock Unit	Common Stock (5,851)	—	—	5,851	Acquired
Feb. 15, 2018	MKSI	Restricted Stock Unit	Common Stock (10,126)	—	—	10,126	Acquired
Feb. 12, 2018	MKSI	Restricted Stock Unit	Common Stock (2,570)	—	—	2,570	Disposed
May 11, 2017	MKSI	Restricted Stock Unit	Common Stock (5,930)	—	—	5,930	Disposed
Feb. 15, 2017	MKSI	Restricted Stock Unit	Common Stock (4,515)	—	—	4,515	Disposed
Feb. 15, 2017	MKSI	Restricted Stock Unit	Common Stock (6,913)	—	—	6,913	Disposed
Feb. 15, 2017	MKSI	Restricted Stock Unit	Common Stock (3,783)	—	—	3,783	Disposed
Feb. 15, 2017	MKSI	Restricted Stock Unit	Common Stock (5,234)	—	—	5,234	Disposed
Feb. 15, 2017	MKSI	Restricted Stock Unit	Common Stock (8,863)	—	—	8,863	Acquired
Feb. 15, 2017	MKSI	Restricted Stock Unit	Common Stock (13,294)	—	—	13,294	Acquired
Feb. 13, 2017	MKSI	Restricted Stock Unit	Common Stock (3,191)	—	—	3,191	Disposed
Feb. 10, 2017	MKSI	Restricted Stock Unit	Common Stock (4,305)	—	—	4,305	Disposed
Feb. 10, 2017	MKSI	Restricted Stock Unit	Common Stock (6,457)	—	—	6,457	Disposed
July 5, 2016	MKSI	Restricted Stock Unit	Common Stock (5,930)	—	—	5,930	Acquired
Feb. 25, 2016	MKSI	Restricted Stock Unit	Common Stock (3,715)	—	—	3,715	Disposed
Feb. 25, 2016	MKSI	Restricted Stock Unit	Common Stock (5,052)	—	—	5,052	Disposed
Feb. 16, 2016	MKSI	Restricted Stock Unit	Common Stock (13,546)	—	—	13,546	Acquired
Feb. 16, 2016	MKSI	Restricted Stock Unit	Common Stock (23,931)	—	—	23,931	Acquired
Feb. 16, 2016	MKSI	Restricted Stock Unit	Common Stock (3,782)	—	—	3,782	Disposed
Feb. 16, 2016	MKSI	Restricted Stock Unit	Common Stock (5,234)	—	—	5,234	Disposed
Feb. 10, 2016	MKSI	Restricted Stock Unit	Common Stock (4,304)	—	—	4,304	Disposed
Feb. 10, 2016	MKSI	Restricted Stock Unit	Common Stock (6,457)	—	—	6,457	Disposed
Jan. 26, 2016	MKSI	Restricted Stock Unit	Common Stock (3,447)	—	—	3,447	Disposed
Feb. 25, 2015	MKSI	Restricted Stock Unit	Common Stock (3,715)	—	—	3,715	Disposed
Feb. 25, 2015	MKSI	Restricted Stock Unit	Common Stock (5,052)	—	—	5,052	Disposed
Feb. 23, 2015	MKSI	Restricted Stock Unit	Common Stock (2,119)	—	—	2,119	Disposed
Feb. 23, 2015	MKSI	Restricted Stock Unit	Common Stock (3,115)	—	—	3,115	Disposed
Feb. 17, 2015	MKSI	Restricted Stock Unit	Common Stock (19,149)	—	—	19,149	Acquired
Feb. 17, 2015	MKSI	Restricted Stock Unit	Common Stock (11,348)	—	—	11,348	Acquired
Feb. 10, 2015	MKSI	Restricted Stock Unit	Common Stock (4,304)	—	—	4,304	Disposed
Feb. 10, 2015	MKSI	Restricted Stock Unit	Common Stock (6,456)	—	—	6,456	Disposed

Showing latest 100 of 138 transactions

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

Initial ownership (Form 3) 2 holdings

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

Date	Ticker	Security	Shares	Ownership
Jan. 8, 2010	MKSI	Common Stock	11,482	Direct
Jan. 8, 2010	MKSI	Restricted Stock Unit→ Common Stock (13,800)	13,800	Direct

Compensation (DEF 14A)

Matched by name from proxy statements (DEF 14A) — verify against the filing.

MKSI

PFO

Fiscal year	Salary	Bonus	Stock awards	Option awards	Non-equity incentive	Pension change	Other	Total
2024	$650,500	—	—	—	—	—	$20,332	$670,832
2023	$623,775	—	—	—	$482,802	—	$40,546	$3,040,068
2022	$615,774	—	—	—	$554,154	—	$44,042	$3,110,090

Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.