Ronald Weigner

CIK 1202758 · View on SEC EDGAR ↗

Insider

First SEC filing: Feb. 4, 2004 · Latest: Feb. 12, 2010

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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

MKSI selling March 2, 2009

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 66 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

66 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
March 16, 2009	MKSI	A	7,000	—	—	15,804 Direct	+79.51%	Acquired	(price as of 2026-08-21)
March 10, 2009	MKSI	M	2,822	—	—	8,804 Direct	-24.27%	Disposed	(price as of 2026-08-21)
March 10, 2009	MKSI	F 10b5-1	897	$12.19	$10,934	11,127 Direct	-7.46%	Disposed	2222.8% (price as of 2026-08-21)
March 10, 2009	MKSI	M	2,822	—	—	12,024 Direct	+30.67%	Acquired	(price as of 2026-08-21)
March 2, 2009	MKSI	M	3,156	—	—	13,156 Direct	-19.35%	Disposed	(price as of 2026-08-21)
March 2, 2009	MKSI	S	1,003	$11.89	$11,926	9,202 Direct	-9.83%	Disposed	2281.4% (price as of 2026-08-21)
March 2, 2009	MKSI	M	3,156	—	—	10,205 Direct	+44.77%	Acquired	(price as of 2026-08-21)
Feb. 13, 2009	MKSI	F 10b5-1	3,476	$15.89	$55,234	7,050 Direct	-33.02%	Disposed	1681.9% (price as of 2026-08-21)
June 5, 2008	MKSI	S	695	$24.15	$16,784	10,003 Direct	-6.50%	Disposed	1072.5% (price as of 2026-08-21)
May 9, 2008	MKSI	S	1,991	$24.09	$47,963	10,003 Direct	-16.60%	Disposed	1075.4% (price as of 2026-08-21)
March 10, 2008	MKSI	A	10,000	—	—	16,846 Direct	+146.07%	Acquired	(price as of 2026-08-21)
March 1, 2008	MKSI	M	3,154	—	—	6,846 Direct	-31.54%	Disposed	(price as of 2026-08-21)
March 1, 2008	MKSI	F	1,163	—	—	11,994 Direct	-8.84%	Disposed	(price as of 2026-08-21)
March 1, 2008	MKSI	M	3,154	—	—	13,157 Direct	+31.53%	Acquired	(price as of 2026-08-21)
Dec. 4, 2007	MKSI	S	687	$17.80	$12,229	10,003 Direct	-6.43%	Disposed	1490.7% (price as of 2026-08-21)
June 14, 2007	MKSI	M	60,000	—	—	198,453 Direct	-23.22%	Disposed	(price as of 2026-08-21)
June 14, 2007	MKSI	S	10,000	$27.71	$277,100	10,002 Direct	-50.00%	Disposed	921.8% (price as of 2026-08-21)
June 14, 2007	MKSI	S	50,000	$27.76	$1,388,000	20,002 Direct	-71.43%	Disposed	920.0% (price as of 2026-08-21)
June 14, 2007	MKSI	M	60,000	$6.67	$400,200	70,002 Direct	+599.88%	Acquired	4145.1% (price as of 2026-08-21)
June 8, 2007	MKSI	S	602	$26.60	$16,013	10,002 Direct	-5.68%	Disposed	964.5% (price as of 2026-08-21)
March 1, 2007	MKSI	A	10,000	—	—	10,000 Direct	—	Acquired	(price as of 2026-08-21)
Dec. 13, 2006	MKSI	S	626	$20.93	$13,102	10,001 Direct	-5.89%	Disposed	1252.8% (price as of 2026-08-21)
Dec. 4, 2006	MKSI	J	626	$17.66	$11,055	10,627 Direct	+6.26%	Acquired	1503.3% (price as of 2026-08-21)
Nov. 1, 2006	MKSI	M	13,584	—	—	258,453 Direct	-4.99%	Disposed	(price as of 2026-08-21)
Nov. 1, 2006	MKSI	S	13,584	$20.51	$278,608	10,001 Direct	-57.60%	Disposed	1280.5% (price as of 2026-08-21)
Nov. 1, 2006	MKSI	M	13,584	$4.43	$60,177	23,585 Direct	+135.83%	Acquired	6291.6% (price as of 2026-08-21)
Oct. 25, 2006	MKSI	M 10b5-1	2,770	—	—	272,037 Direct	-1.01%	Disposed	(price as of 2026-08-21)
Oct. 25, 2006	MKSI	S 10b5-1	2,770	$21.01	$58,198	10,001 Direct	-21.69%	Disposed	1247.7% (price as of 2026-08-21)
Oct. 25, 2006	MKSI	M 10b5-1	2,770	$4.43	$12,271	12,771 Direct	+27.70%	Acquired	6291.6% (price as of 2026-08-21)
Oct. 18, 2006	MKSI	M 10b5-1	2,770	—	—	274,807 Direct	-1.00%	Disposed	(price as of 2026-08-21)
Oct. 18, 2006	MKSI	S 10b5-1	2,770	$21.89	$60,635	10,001 Direct	-21.69%	Disposed	1193.5% (price as of 2026-08-21)
Oct. 18, 2006	MKSI	M 10b5-1	2,770	$4.43	$12,271	12,771 Direct	+27.70%	Acquired	6291.6% (price as of 2026-08-21)
Oct. 11, 2006	MKSI	M 10b5-1	2,770	—	—	277,577 Direct	-0.99%	Disposed	(price as of 2026-08-21)
Oct. 11, 2006	MKSI	S 10b5-1	2,770	$20.52	$56,840	10,001 Direct	-21.69%	Disposed	1279.9% (price as of 2026-08-21)
Oct. 11, 2006	MKSI	M 10b5-1	2,770	$4.43	$12,271	12,771 Direct	+27.70%	Acquired	6291.6% (price as of 2026-08-21)
Oct. 4, 2006	MKSI	M 10b5-1	2,770	—	—	280,347 Direct	-0.98%	Disposed	(price as of 2026-08-21)
Oct. 4, 2006	MKSI	S 10b5-1	2,770	$19.64	$54,403	10,001 Direct	-21.69%	Disposed	1341.7% (price as of 2026-08-21)
Oct. 4, 2006	MKSI	M 10b5-1	2,770	$4.43	$12,271	12,771 Direct	+27.70%	Acquired	6291.6% (price as of 2026-08-21)
Oct. 2, 2006	MKSI	M 10b5-1	9,000	—	—	283,117 Direct	-3.08%	Disposed	(price as of 2026-08-21)
Oct. 2, 2006	MKSI	M 10b5-1	2,080	—	—	292,117 Direct	-0.71%	Disposed	(price as of 2026-08-21)
Oct. 2, 2006	MKSI	S 10b5-1	9,000	$20.26	$182,340	10,001 Direct	-47.37%	Disposed	1297.6% (price as of 2026-08-21)
Oct. 2, 2006	MKSI	M 10b5-1	9,000	$4.43	$39,870	19,001 Direct	+89.99%	Acquired	6291.6% (price as of 2026-08-21)
Oct. 2, 2006	MKSI	S 10b5-1	2,080	$20.23	$42,078	10,001 Direct	-17.22%	Disposed	1299.7% (price as of 2026-08-21)
Oct. 2, 2006	MKSI	M 10b5-1	2,080	$4.43	$9,214	12,081 Direct	+20.80%	Acquired	6291.6% (price as of 2026-08-21)
Sept. 20, 2006	MKSI	M 10b5-1	2,770	—	—	294,197 Direct	-0.93%	Disposed	(price as of 2026-08-21)
Sept. 20, 2006	MKSI	S 10b5-1	2,770	$20.41	$56,536	10,001 Direct	-21.69%	Disposed	1287.3% (price as of 2026-08-21)
Sept. 20, 2006	MKSI	M 10b5-1	2,770	$4.43	$12,271	12,771 Direct	+27.70%	Acquired	6291.6% (price as of 2026-08-21)
Sept. 14, 2006	MKSI	M 10b5-1	3,000	—	—	296,967 Direct	-1.00%	Disposed	(price as of 2026-08-21)
Sept. 14, 2006	MKSI	S 10b5-1	3,000	$20.01	$60,030	10,001 Direct	-23.08%	Disposed	1315.0% (price as of 2026-08-21)
Sept. 14, 2006	MKSI	M 10b5-1	3,000	$4.43	$13,290	13,001 Direct	+30.00%	Acquired	6291.6% (price as of 2026-08-21)
Sept. 13, 2006	MKSI	M 10b5-1	2,770	—	—	299,967 Direct	-0.91%	Disposed	(price as of 2026-08-21)
Sept. 13, 2006	MKSI	S 10b5-1	2,770	$20.34	$56,342	10,001 Direct	-21.69%	Disposed	1292.1% (price as of 2026-08-21)
Sept. 13, 2006	MKSI	M 10b5-1	2,770	$4.43	$12,271	12,771 Direct	+27.70%	Acquired	6291.6% (price as of 2026-08-21)
Sept. 6, 2006	MKSI	M 10b5-1	2,770	—	—	302,737 Direct	-0.91%	Disposed	(price as of 2026-08-21)
Sept. 6, 2006	MKSI	S 10b5-1	2,770	$20.41	$56,536	10,001 Direct	-21.69%	Disposed	1287.3% (price as of 2026-08-21)
Sept. 6, 2006	MKSI	M 10b5-1	2,770	$4.43	$12,271	12,771 Direct	+27.70%	Acquired	6291.6% (price as of 2026-08-21)
Aug. 23, 2006	MKSI	M 10b5-1	526	—	—	305,507 Direct	-0.17%	Disposed	(price as of 2026-08-21)
Aug. 23, 2006	MKSI	S 10b5-1	526	$20.64	$10,857	10,001 Direct	-5.00%	Disposed	1271.9% (price as of 2026-08-21)
Aug. 23, 2006	MKSI	M 10b5-1	526	$4.43	$2,330	10,527 Direct	+5.26%	Acquired	6291.6% (price as of 2026-08-21)
Aug. 16, 2006	MKSI	M 10b5-1	660	—	—	306,033 Direct	-0.22%	Disposed	(price as of 2026-08-21)
Aug. 16, 2006	MKSI	S 10b5-1	660	$20.22	$13,345	10,001 Direct	-6.19%	Disposed	1300.3% (price as of 2026-08-21)
Aug. 16, 2006	MKSI	M 10b5-1	660	$4.43	$2,924	10,661 Direct	+6.60%	Acquired	6291.6% (price as of 2026-08-21)
Aug. 9, 2006	MKSI	M 10b5-1	660	—	—	306,693 Direct	-0.21%	Disposed	(price as of 2026-08-21)
Aug. 9, 2006	MKSI	S 10b5-1	660	$19.63	$12,956	10,001 Direct	-6.19%	Disposed	1342.4% (price as of 2026-08-21)
Aug. 9, 2006	MKSI	M 10b5-1	660	$4.43	$2,924	10,661 Direct	+6.60%	Acquired	6291.6% (price as of 2026-08-21)
Aug. 2, 2006	MKSI	M 10b5-1	660	—	—	307,353 Direct	-0.21%	Disposed	(price as of 2026-08-21)
Aug. 2, 2006	MKSI	S 10b5-1	660	$20.08	$13,253	10,001 Direct	-6.19%	Disposed	1310.1% (price as of 2026-08-21)
Aug. 2, 2006	MKSI	M 10b5-1	660	$4.43	$2,924	10,661 Direct	+6.60%	Acquired	6291.6% (price as of 2026-08-21)
July 26, 2006	MKSI	M 10b5-1	660	—	—	308,013 Direct	-0.21%	Disposed	(price as of 2026-08-21)
July 26, 2006	MKSI	S 10b5-1	660	$18.61	$12,283	10,001 Direct	-6.19%	Disposed	1421.5% (price as of 2026-08-21)
July 26, 2006	MKSI	M 10b5-1	660	$4.43	$2,924	10,661 Direct	+6.60%	Acquired	6291.6% (price as of 2026-08-21)
July 19, 2006	MKSI	M 10b5-1	660	—	—	308,673 Direct	-0.21%	Disposed	(price as of 2026-08-21)
July 19, 2006	MKSI	S 10b5-1	660	$18.44	$12,170	10,001 Direct	-6.19%	Disposed	1435.5% (price as of 2026-08-21)
July 19, 2006	MKSI	M 10b5-1	660	$4.43	$2,924	10,661 Direct	+6.60%	Acquired	6291.6% (price as of 2026-08-21)
July 12, 2006	MKSI	M 10b5-1	660	—	—	309,333 Direct	-0.21%	Disposed	(price as of 2026-08-21)
July 12, 2006	MKSI	S 10b5-1	660	$19.30	$12,738	10,001 Direct	-6.19%	Disposed	1367.1% (price as of 2026-08-21)
July 12, 2006	MKSI	M 10b5-1	660	$4.43	$2,924	10,661 Direct	+6.60%	Acquired	6291.6% (price as of 2026-08-21)
July 5, 2006	MKSI	M 10b5-1	660	—	—	309,993 Direct	-0.21%	Disposed	(price as of 2026-08-21)
July 5, 2006	MKSI	S 10b5-1	660	$20.19	$13,325	10,001 Direct	-6.19%	Disposed	1302.4% (price as of 2026-08-21)
July 5, 2006	MKSI	M	660	$4.43	$2,924	10,661 Direct	+6.60%	Acquired	6291.6% (price as of 2026-08-21)
June 28, 2006	MKSI	M 10b5-1	660	—	—	310,653 Direct	-0.21%	Disposed	(price as of 2026-08-21)
June 28, 2006	MKSI	S 10b5-1	660	$19.70	$13,002	10,001 Direct	-6.19%	Disposed	1337.3% (price as of 2026-08-21)
June 28, 2006	MKSI	M 10b5-1	660	$4.43	$2,924	10,661 Direct	+6.60%	Acquired	6291.6% (price as of 2026-08-21)
June 21, 2006	MKSI	M 10b5-1	660	—	—	311,313 Direct	-0.21%	Disposed	(price as of 2026-08-21)
June 21, 2006	MKSI	S 10b5-1	660	$19.01	$12,547	10,001 Direct	-6.19%	Disposed	1389.5% (price as of 2026-08-21)
June 21, 2006	MKSI	M 10b5-1	660	$4.43	$2,924	10,661 Direct	+6.60%	Acquired	6291.6% (price as of 2026-08-21)
June 14, 2006	MKSI	M 10b5-1	660	—	—	311,973 Direct	-0.21%	Disposed	(price as of 2026-08-21)
June 14, 2006	MKSI	S 10b5-1	660	$19.20	$12,672	10,001 Direct	-6.19%	Disposed	1374.7% (price as of 2026-08-21)
June 14, 2006	MKSI	M 10b5-1	660	$4.43	$2,924	10,661 Direct	+6.60%	Acquired	6291.6% (price as of 2026-08-21)
June 7, 2006	MKSI	M 10b5-1	660	—	—	312,633 Direct	-0.21%	Disposed	(price as of 2026-08-21)
June 7, 2006	MKSI	S 10b5-1	660	$21.09	$13,919	10,001 Direct	-6.19%	Disposed	1242.6% (price as of 2026-08-21)
June 7, 2006	MKSI	M 10b5-1	660	$4.43	$2,924	10,661 Direct	+6.60%	Acquired	6291.6% (price as of 2026-08-21)
June 2, 2006	MKSI	S	753	$21.97	$16,543	10,001 Direct	-7.00%	Disposed	1188.8% (price as of 2026-08-21)
June 2, 2006	MKSI	J	753	$16.59	$12,492	10,754 Direct	+7.53%	Acquired	1606.8% (price as of 2026-08-21)
May 31, 2006	MKSI	M 10b5-1	660	—	—	313,293 Direct	-0.21%	Disposed	(price as of 2026-08-21)
May 31, 2006	MKSI	S 10b5-1	660	$20.99	$13,853	10,001 Direct	-6.19%	Disposed	1249.0% (price as of 2026-08-21)
May 31, 2006	MKSI	M 10b5-1	660	$4.43	$2,924	10,661 Direct	+6.60%	Acquired	6291.6% (price as of 2026-08-21)
May 24, 2006	MKSI	M 10b5-1	660	—	—	313,953 Direct	-0.21%	Disposed	(price as of 2026-08-21)
May 24, 2006	MKSI	S 10b5-1	660	$20.68	$13,649	10,001 Direct	-6.19%	Disposed	1269.2% (price as of 2026-08-21)
May 24, 2006	MKSI	M 10b5-1	660	$4.43	$2,924	10,661 Direct	+6.60%	Acquired	6291.6% (price as of 2026-08-21)

Showing latest 100 of 259 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
March 16, 2009	MKSI	Restricted Stock Unit	Common Stock (7,000)	—	—	7,000	Acquired
March 10, 2009	MKSI	Restricted Stock Unit	Common Stock (2,822)	—	—	2,822	Disposed
March 2, 2009	MKSI	Restricted Stock Unit	Common Stock (3,156)	—	—	3,156	Disposed
March 10, 2008	MKSI	Restricted Stock Unit	Common (10,000)	—	—	10,000	Acquired
March 1, 2008	MKSI	Restricted Stock Unit	Common (3,154)	—	—	3,154	Disposed
June 14, 2007	MKSI	Stock Option (right to buy)	Common (60,000)	—	Aug. 8, 1988	60,000	Disposed
March 1, 2007	MKSI	Restricted Stock Unit	Common (10,000)	—	—	10,000	Acquired
Nov. 1, 2006	MKSI	Stock Option (right to buy)	Common (13,584)	—	Aug. 8, 1988	13,584	Disposed
Oct. 25, 2006	MKSI	Stock Option (right to buy)	Common (2,770)	—	Aug. 8, 1988	2,770	Disposed
Oct. 18, 2006	MKSI	Stock Option (right to buy)	Common (2,770)	—	Aug. 8, 1988	2,770	Disposed
Oct. 11, 2006	MKSI	Stock Option (right to buy)	Common (2,770)	—	Aug. 8, 1988	2,770	Disposed
Oct. 4, 2006	MKSI	Stock Option (right to buy)	Common (2,770)	—	Aug. 8, 1988	2,770	Disposed
Oct. 2, 2006	MKSI	Stock Option (right to buy)	Common (9,000)	—	Aug. 8, 1988	9,000	Disposed
Oct. 2, 2006	MKSI	Stock Option (right to buy)	Common (2,080)	—	Aug. 8, 1988	2,080	Disposed
Sept. 20, 2006	MKSI	Stock Option (right to buy)	Common (2,770)	—	Aug. 8, 1988	2,770	Disposed
Sept. 14, 2006	MKSI	Stock Option (right to buy)	Common (3,000)	—	Aug. 8, 1988	3,000	Disposed
Sept. 13, 2006	MKSI	Stock Option (right to buy)	Common (2,770)	—	Aug. 8, 1988	2,770	Disposed
Sept. 6, 2006	MKSI	Stock Option (right to buy)	Common (2,770)	—	Aug. 8, 1988	2,770	Disposed
Aug. 23, 2006	MKSI	Stock Option (right to buy)	Common (526)	—	Aug. 8, 1988	526	Disposed
Aug. 16, 2006	MKSI	Stock Option (right to buy)	Common (660)	—	Aug. 8, 1988	660	Disposed
Aug. 9, 2006	MKSI	Stock Option (right to buy)	Common (660)	—	Aug. 8, 1988	660	Disposed
Aug. 2, 2006	MKSI	Stock Option (right to buy)	Common (660)	—	Aug. 8, 1988	660	Disposed
July 26, 2006	MKSI	Stock Option (right to buy)	Common (660)	—	Aug. 8, 1988	660	Disposed
July 19, 2006	MKSI	Stock Option (right to buy)	Common (660)	—	Aug. 8, 1988	660	Disposed
July 12, 2006	MKSI	Stock Option (right to buy)	Common (660)	—	Aug. 8, 1988	660	Disposed
July 5, 2006	MKSI	Stock Option (right to buy)	Common (660)	—	Aug. 8, 1988	660	Disposed
June 28, 2006	MKSI	Stock Option (right to buy)	Common (660)	—	Aug. 8, 1988	660	Disposed
June 21, 2006	MKSI	Stock Option (right to buy)	Common (660)	—	Aug. 8, 1988	660	Disposed
June 14, 2006	MKSI	Stock Option (right to buy)	Common (660)	—	Aug. 8, 1988	660	Disposed
June 7, 2006	MKSI	Stock Option (right to buy)	Common (660)	—	Aug. 8, 1988	660	Disposed
May 31, 2006	MKSI	Stock Option (right to buy)	Common (660)	—	Aug. 8, 1988	660	Disposed
May 24, 2006	MKSI	Stock Option (right to buy)	Common (660)	—	Aug. 8, 1988	660	Disposed
May 17, 2006	MKSI	Stock Option (right to buy)	Common (660)	—	Aug. 8, 1988	660	Disposed
May 10, 2006	MKSI	Stock Option (right to buy)	Common (660)	—	Aug. 8, 1988	660	Disposed
May 3, 2006	MKSI	Stock Option (right to buy)	Common (660)	—	Aug. 8, 1988	660	Disposed
April 26, 2006	MKSI	Stock Option (right to buy)	Common (660)	—	Aug. 8, 1988	660	Disposed
April 19, 2006	MKSI	Stock Option (right to buy)	Common (660)	—	Aug. 8, 1988	660	Disposed
April 12, 2006	MKSI	Stock Option (right to buy)	Common (660)	—	Aug. 8, 1988	660	Disposed
April 5, 2006	MKSI	Stock Option (right to buy)	Common (660)	—	Aug. 8, 1988	660	Disposed
March 29, 2006	MKSI	Stock Option (right to buy)	Common (660)	—	Aug. 8, 1988	660	Disposed
March 22, 2006	MKSI	Stock Option (right to buy)	Common (660)	—	Aug. 8, 1988	660	Disposed
March 15, 2006	MKSI	Stock Option (right to buy)	Common (660)	—	Aug. 8, 1988	660	Disposed
March 8, 2006	MKSI	Stock Option (right to buy)	Common (660)	—	Aug. 8, 1988	660	Disposed
March 1, 2006	MKSI	Stock Option (right to buy)	Common (660)	—	Aug. 8, 1988	660	Disposed
Feb. 22, 2006	MKSI	Stock Option (right to buy)	Common (660)	—	Aug. 8, 1988	660	Disposed
Feb. 15, 2006	MKSI	Stock Option (right to buy) [F1]	Common (660)	—	Aug. 8, 1988	660	Disposed
July 20, 2005	MKSI	Stock Option (right to buy)	Common (1,800)	$0.00	Aug. 8, 1988	1,800	Disposed
July 20, 2005	MKSI	Stock Option (right to buy)	Common (1,800)	$0.00	Aug. 8, 1988	1,800	Disposed
July 13, 2005	MKSI	Stock Option (right to buy)	Common (1,800)	$0.00	Aug. 8, 1988	1,800	Disposed
July 6, 2005	MKSI	Stock Option (right to buy)	Common (1,800)	—	Aug. 8, 1988	1,800	Disposed
June 29, 2005	MKSI	Stock Option (right to buy)	Common (1,800)	$0.00	Aug. 8, 1988	1,800	Disposed
June 22, 2005	MKSI	Stock Option (right to buy)	Common (1,800)	—	Aug. 8, 1988	1,800	Disposed
June 15, 2005	MKSI	Stock Option (right to buy)	Common (1,800)	$0.00	Aug. 8, 1988	1,800	Disposed
June 8, 2005	MKSI	Stock Option (right to buy)	Common (1,800)	$0.00	Aug. 8, 1988	1,800	Disposed
June 1, 2005	MKSI	Stock Option (right to buy)	Common (1,800)	$0.00	Aug. 8, 1988	1,800	Disposed
May 25, 2005	MKSI	Stock Option (right to buy)	Common (1,800)	—	Aug. 8, 1988	1,800	Disposed
May 18, 2005	MKSI	Stock Option (right to buy)	Common (1,800)	$0.00	Aug. 8, 1988	1,800	Disposed
May 11, 2005	MKSI	Stock Option (right to buy)	Common (1,800)	$0.00	Aug. 8, 1988	1,800	Disposed
May 4, 2005	MKSI	Stock Option (right to buy)	Common (1,800)	$0.00	Aug. 8, 1988	1,800	Disposed
April 27, 2005	MKSI	Stock Option (right to buy)	Common (1,800)	$0.00	Aug. 8, 1988	1,800	Disposed
April 20, 2005	MKSI	Stock Option (right to buy)	Common (1,800)	—	Aug. 8, 1988	1,800	Disposed
April 13, 2005	MKSI	Stock Option (right to buy)	Common (1,800)	—	Aug. 8, 1988	1,800	Disposed
April 6, 2005	MKSI	Stock Option (right to buy)	Common (1,800)	$0.00	Aug. 8, 1988	1,800	Disposed
March 30, 2005	MKSI	Stock Option (right to buy)	Common (1,800)	—	Aug. 8, 1988	1,800	Disposed
March 23, 2005	MKSI	Stock Option (right to buy)	Common (1,800)	$0.00	Aug. 8, 1988	1,800	Disposed
March 16, 2005	MKSI	Stock Option (right to buy)	Common (1,800)	$0.00	Aug. 8, 1988	1,800	Disposed
March 9, 2005	MKSI	Stock Option (right to buy)	Common (1,800)	$0.00	Aug. 8, 1988	1,800	Disposed
March 2, 2005	MKSI	Stock Option (right to buy)	Common (1,800)	$0.00	Aug. 8, 1988	1,800	Disposed
Feb. 23, 2005	MKSI	Stock Option (right to buy)	Common (1,800)	$0.00	Aug. 8, 1988	1,800	Disposed
Feb. 16, 2005	MKSI	Stock Option (right to buy)	Common (1,800)	$0.00	Aug. 8, 1988	1,800	Disposed
Feb. 9, 2005	MKSI	Stock Option (right to buy)	Common (1,800)	$0.00	Aug. 8, 1988	1,800	Disposed
Feb. 2, 2005	MKSI	Stock Option (right to buy)	Common (1,800)	$0.00	Aug. 8, 1988	1,800	Disposed
Jan. 26, 2005	MKSI	Stock Option (right to buy)	Common (1,800)	—	Aug. 8, 1988	1,800	Disposed
Jan. 19, 2005	MKSI	Stock Option (right to buy)	Common (1,800)	—	Aug. 8, 1988	1,800	Disposed
Jan. 12, 2005	MKSI	Stock Option (right to buy)	Common (1,800)	—	Aug. 8, 1988	1,800	Disposed
Jan. 5, 2005	MKSI	Stock Option (right to buy)	Common (1,800)	—	Aug. 8, 1988	1,800	Disposed
Dec. 29, 2004	MKSI	Stock Option (right to buy)	Common (1,800)	—	Aug. 8, 1988	1,800	Disposed
Dec. 22, 2004	MKSI	Stock Option (right to buy)	Common (1,800)	—	Aug. 8, 1988	1,800	Disposed
Dec. 15, 2004	MKSI	Stock Option (right to buy)	Common (1,800)	—	Aug. 8, 1988	1,800	Disposed
Dec. 8, 2004	MKSI	Stock Option (right to buy)	Common (1,800)	$0.00	Aug. 8, 1988	1,800	Disposed
Dec. 1, 2004	MKSI	Stock Option (right to buy)	Common (1,800)	—	Aug. 8, 1988	1,800	Disposed
July 30, 2004	MKSI	Stock Option (Right to Buy)	Common (30,000)	$14.72	July 30, 2014	30,000	Acquired
Jan. 5, 2004	MKSI	Stock Option (roght to buy)	Common (6,000)	$29.93	Jan. 6, 2014	6,000	Acquired
Nov. 11, 2003	MKSI	Stock Option (right to buy)	Common (24,000)	$27.11	Nov. 13, 2013	24,000	Acquired

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