Hans Jochen Kahl

CIK 1202779 · View on SEC EDGAR ↗

Insider

First SEC filing: Feb. 6, 2007 · Latest: Feb. 6, 2007

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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 April 26, 2010

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 34 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

34 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
May 2, 2011	MKSI	A	6,000	—	—	16,000 Direct	+60.00%	Acquired	(price as of 2026-08-21)
May 3, 2010	MKSI	A	6,000	—	—	10,000 Direct	+150.00%	Acquired	(price as of 2026-08-21)
April 26, 2010	MKSI	S	4,000	$24.75	$99,000	4,000 Direct	-50.00%	Disposed	1044.0% (price as of 2026-08-21)
May 4, 2009	MKSI	A	4,000	—	—	8,000 Direct	+100.00%	Acquired	(price as of 2026-08-21)
May 13, 2008	MKSI	S	2,987	$24.77	$73,988	4,000 Direct	-42.75%	Disposed	1043.1% (price as of 2026-08-21)
May 8, 2008	MKSI	S	4,000	$23.85	$95,400	6,987 Direct	-36.41%	Disposed	1087.2% (price as of 2026-08-21)
May 5, 2008	MKSI	A	4,000	—	—	10,987 Direct	+57.25%	Acquired	(price as of 2026-08-21)
May 4, 2008	MKSI	M	4,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
May 4, 2008	MKSI	M	4,000	—	—	6,987 Direct	+133.91%	Acquired	(price as of 2026-08-21)
May 14, 2007	MKSI	M	12,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
May 14, 2007	MKSI	S	100	$27.16	$2,716	2,987 Direct	-3.24%	Disposed	942.5% (price as of 2026-08-21)
May 14, 2007	MKSI	S	200	$27.17	$5,434	3,087 Direct	-6.08%	Disposed	942.1% (price as of 2026-08-21)
May 14, 2007	MKSI	S	4,200	$27.15	$114,030	3,287 Direct	-56.10%	Disposed	942.9% (price as of 2026-08-21)
May 14, 2007	MKSI	S	7,500	$27.18	$203,850	7,487 Direct	-50.04%	Disposed	941.8% (price as of 2026-08-21)
May 14, 2007	MKSI	M	12,000	$24.35	$292,200	14,987 Direct	+401.74%	Acquired	1062.8% (price as of 2026-08-21)
May 7, 2007	MKSI	A	4,000	—	—	4,000 Direct	—	Acquired	(price as of 2026-08-21)
Feb. 22, 2007	MKSI	M 10b5-1	3,700	—	—	2,819 Direct	-56.76%	Disposed	(price as of 2026-08-21)
Feb. 22, 2007	MKSI	M 10b5-1	800	—	—	6,519 Direct	-10.93%	Disposed	(price as of 2026-08-21)
Feb. 22, 2007	MKSI	M 10b5-1	2,700	—	—	7,319 Direct	-26.95%	Disposed	(price as of 2026-08-21)
Feb. 22, 2007	MKSI	M 10b5-1	600	—	—	10,019 Direct	-5.65%	Disposed	(price as of 2026-08-21)
Feb. 22, 2007	MKSI	M 10b5-1	200	—	—	10,619 Direct	-1.85%	Disposed	(price as of 2026-08-21)
Feb. 22, 2007	MKSI	M 10b5-1	1,500	—	—	10,819 Direct	-12.18%	Disposed	(price as of 2026-08-21)
Feb. 22, 2007	MKSI	M 10b5-1	1,000	—	—	12,319 Direct	-7.51%	Disposed	(price as of 2026-08-21)
Feb. 22, 2007	MKSI	M 10b5-1	1,500	—	—	13,319 Direct	-10.12%	Disposed	(price as of 2026-08-21)
Feb. 22, 2007	MKSI	S 10b5-1	3,700	$24.80	$91,760	2,987 Direct	-55.33%	Disposed	1041.7% (price as of 2026-08-21)
Feb. 22, 2007	MKSI	S 10b5-1	800	$24.81	$19,848	6,687 Direct	-10.69%	Disposed	1041.3% (price as of 2026-08-21)
Feb. 22, 2007	MKSI	S 10b5-1	2,700	$24.82	$67,014	7,487 Direct	-26.50%	Disposed	1040.8% (price as of 2026-08-21)
Feb. 22, 2007	MKSI	S 10b5-1	600	$24.84	$14,904	10,187 Direct	-5.56%	Disposed	1039.9% (price as of 2026-08-21)
Feb. 22, 2007	MKSI	S 10b5-1	200	$24.83	$4,966	10,787 Direct	-1.82%	Disposed	1040.4% (price as of 2026-08-21)
Feb. 22, 2007	MKSI	S 10b5-1	1,500	$24.85	$37,275	10,987 Direct	-12.01%	Disposed	1039.4% (price as of 2026-08-21)
Feb. 22, 2007	MKSI	S 10b5-1	1,000	$24.87	$24,870	12,487 Direct	-7.41%	Disposed	1038.5% (price as of 2026-08-21)
Feb. 22, 2007	MKSI	S 10b5-1	1,500	$24.88	$37,320	13,487 Direct	-10.01%	Disposed	1038.1% (price as of 2026-08-21)
Feb. 22, 2007	MKSI	M 10b5-1	3,700	$20.07	$74,259	14,987 Direct	+32.78%	Acquired	1310.8% (price as of 2026-08-21)
Feb. 22, 2007	MKSI	M 10b5-1	800	$20.07	$16,056	11,287 Direct	+7.63%	Acquired	1310.8% (price as of 2026-08-21)
Feb. 22, 2007	MKSI	M 10b5-1	2,700	$20.07	$54,189	10,487 Direct	+34.67%	Acquired	1310.8% (price as of 2026-08-21)
Feb. 22, 2007	MKSI	M 10b5-1	600	$20.07	$12,042	7,787 Direct	+8.35%	Acquired	1310.8% (price as of 2026-08-21)
Feb. 22, 2007	MKSI	M 10b5-1	200	$20.07	$4,014	7,187 Direct	+2.86%	Acquired	1310.8% (price as of 2026-08-21)
Feb. 22, 2007	MKSI	M 10b5-1	1,500	$20.07	$30,105	6,987 Direct	+27.34%	Acquired	1310.8% (price as of 2026-08-21)
Feb. 22, 2007	MKSI	M 10b5-1	1,000	$20.07	$20,070	5,487 Direct	+22.29%	Acquired	1310.8% (price as of 2026-08-21)
Feb. 22, 2007	MKSI	M 10b5-1	1,500	$20.07	$30,105	4,487 Direct	+50.22%	Acquired	1310.8% (price as of 2026-08-21)
Dec. 14, 2006	MKSI	S	1,700	$20.81	$35,377	2,987 Direct	-36.27%	Disposed	1260.6% (price as of 2026-08-21)
May 8, 2006	MKSI	A	12,000	—	—	12,000 Direct	—	Acquired	(price as of 2026-08-21)
May 8, 2006	MKSI	M	12,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
May 8, 2006	MKSI	M	1,876	—	—	14,819 Direct	-11.24%	Disposed	(price as of 2026-08-21)
May 8, 2006	MKSI	S	12,000	$24.31	$291,720	4,687 Direct	-71.91%	Disposed	1064.7% (price as of 2026-08-21)
May 8, 2006	MKSI	M	12,000	$15.84	$190,080	16,687 Direct	+256.03%	Acquired	1687.6% (price as of 2026-08-21)
May 8, 2006	MKSI	S	1,876	$24.31	$45,606	4,687 Direct	-28.58%	Disposed	1064.7% (price as of 2026-08-21)
May 8, 2006	MKSI	M	1,876	$20.13	$37,764	6,563 Direct	+40.03%	Acquired	1306.6% (price as of 2026-08-21)
Feb. 21, 2006	MKSI	S	4,687	$23.06	$108,082	4,687 Direct	-50.00%	Disposed	1127.9% (price as of 2026-08-21)
May 9, 2005	MKSI	A	12,000	—	—	12,000 Direct	—	Acquired	(price as of 2026-08-21)
Nov. 29, 2004	MKSI	S	10,004	$17.31	$173,169	9,374 Direct	-51.63%	Disposed	1535.8% (price as of 2026-08-21)
May 13, 2004	MKSI	A	12,000	—	—	12,000 Direct	—	Acquired	(price as of 2026-08-21)
Sept. 4, 2003	MKSI	M	4,687	—	—	16,695 Direct	-21.92%	Disposed	(price as of 2026-08-21)
Sept. 4, 2003	MKSI	M	4,687	—	—	19,378 Direct	+31.90%	Acquired	(price as of 2026-08-21)
July 29, 2003	MKSI	S	3,800	$22.77	$86,526	14,691 Direct	-20.55%	Disposed	1143.5% (price as of 2026-08-21)

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 4, 2008	MKSI	Restricted Stock Unit	Common (4,000)	—	—	4,000	Disposed
May 14, 2007	MKSI	Director Stock Option (Right to Buy) 2006	Common (12,000)	—	May 8, 2016	12,000	Disposed
May 7, 2007	MKSI	Restricted Stock Unit	Common (4,000)	—	—	4,000	Acquired
Feb. 22, 2007	MKSI	Director Stock option (right to buy)	Common (3,700)	—	Aug. 8, 1988	3,700	Disposed
Feb. 22, 2007	MKSI	Director Stock option (right to buy)	Common (800)	—	Aug. 8, 1988	800	Disposed
Feb. 22, 2007	MKSI	Director Stock option (right to buy)	Common (2,700)	—	Aug. 8, 1988	2,700	Disposed
Feb. 22, 2007	MKSI	Director Stock option (right to buy)	Common (600)	—	Aug. 8, 1988	600	Disposed
Feb. 22, 2007	MKSI	Director Stock option (right to buy)	Common (200)	—	Aug. 8, 1988	200	Disposed
Feb. 22, 2007	MKSI	Director Stock option (right to buy)	Common (1,500)	—	Aug. 8, 1988	1,500	Disposed
Feb. 22, 2007	MKSI	Director Stock option (right to buy)	Common (1,000)	—	Aug. 8, 1988	1,000	Disposed
Feb. 22, 2007	MKSI	Director Stock option (right to buy)	Common (1,500)	—	Aug. 8, 1988	1,500	Disposed
May 8, 2006	MKSI	Director Stock Option (Right to Buy) 2006	Common (12,000)	$24.35	May 8, 2016	12,000	Acquired
May 8, 2006	MKSI	Director Stock Option 2005 (right to buy)	Common (12,000)	—	May 8, 2015	12,000	Disposed
May 8, 2006	MKSI	Director Stock option (right to buy)	Common (1,876)	—	Aug. 8, 1988	1,876	Disposed
May 9, 2005	MKSI	Director Stock Option 2005 (right to buy)	Common (12,000)	$15.84	May 8, 2015	12,000	Acquired
May 13, 2004	MKSI	Director Stock Option (Right to Buy)	Common (12,000)	$20.07	May 14, 2014	12,000	Acquired
Sept. 4, 2003	MKSI	Director Stock option (right to buy)	Common (4,687)	—	Aug. 8, 1988	4,687	Disposed

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