Insider at

04

Insider transactions

05
0 buys (P) 0 sells (S) Net: $0 + 32 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

32 other filings hidden
DateTickerCodeSharesPriceValue Owned afterΔ ownA/Dvs now
Dec. 16, 2015 MKSI S 1,500 $36.09 $54,135 29,283 Direct -4.87% Disposed 671.1% (price as of 2026-10-05)
Nov. 3, 2014 MKSI S 556 $36.55 $20,322 26,824 Direct -2.03% Disposed 661.4% (price as of 2026-10-05)
March 4, 2014 MKSI S 5,111 $30.25 $154,608 22,974 Direct -18.20% Disposed 820.0% (price as of 2026-10-05)
Nov. 11, 2011 MKSI S 1,111 $28.00 $31,108 17,667 Direct -5.92% Disposed 893.9% (price as of 2026-10-05)
Nov. 11, 2011 MKSI S 2,000 $27.00 $54,000 18,778 Direct -9.63% Disposed 930.8% (price as of 2026-10-05)
Feb. 17, 2011 MKSI S 1,667 $30.75 $51,260 14,778 Direct -10.14% Disposed 805.1% (price as of 2026-10-05)
Feb. 16, 2011 MKSI S 2,000 $30.13 $60,260 16,445 Direct -10.84% Disposed 823.7% (price as of 2026-10-05)
Dec. 15, 2010 MKSI S 1,665 $22.17 $36,913 18,445 Direct -8.28% Disposed 1155.3% (price as of 2026-10-05)
Sept. 15, 2010 MKSI S 556 $18.41 $10,236 20,110 Direct -2.69% Disposed 1411.7% (price as of 2026-10-05)

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.

06
DateTickerSecurityUnderlying Exercise priceExpirationSharesA/D
May 7, 2010 MKSI Restricted Stock Unit Common Stock (556) · · 556 Disposed
Feb. 8, 2010 MKSI Restricted Stock Unit Common Stock (555) · · 555 Disposed
Nov. 9, 2009 MKSI Restricted Stock Unit Common Stock (556) · · 556 Disposed
Aug. 7, 2009 MKSI Restricted Stock Unit Common Stock (555) · · 555 Disposed
May 7, 2009 MKSI Restricted Stock Unit Common Stock (556) · · 556 Disposed
Feb. 9, 2009 MKSI Restricted Stock Unit Common Stock (555) · · 555 Disposed
Nov. 7, 2008 MKSI Restricted Stock Unit Common Stock (556) · · 556 Disposed
Aug. 7, 2008 MKSI Restricted Stock Unit Common Stock (555) · · 555 Disposed
May 7, 2008 MKSI Restricted Stock Unit Common (556) · · 556 Disposed
Feb. 7, 2008 MKSI Restricted Stock Unit Common (555) · · 555 Disposed
Nov. 7, 2007 MKSI Restricted Stock Unit Common (556) · · 556 Disposed
Aug. 7, 2007 MKSI Restricted Stock Unit Common (555) · · 555 Disposed

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

Initial ownership (Form 3) 1 holding

07

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

DateTickerSecuritySharesOwnership
May 9, 2007 MKSI Restricted Stock Unit→ Common (6,666) 6,666 Direct