MKS INSTRS INC

Ticker: MKSI CUSIP: 55306N104 Class: EQTY

Dorsey & Whitney Trust CO LLC's Holding History (CIK: 0001384042)

Note: Option positions (PUT/CALL) are excluded.

Q1 2018

Shares 2,217 Value ($000) $256 Avg Close $103.13 Range $88.32 - $120.60

Q4 2017

Shares 3,140 Value ($000) $297 Avg Close $93.43 Range $82.69 - $103.63

Q3 2017

Shares 3,140 Value ($000) $297 Avg Close $76.52 Range $62.45 - $89.48

Q2 2017

Shares 3,079 Value ($000) $207 Avg Close $70.74 Range $60.40 - $82.65

Q1 2017

Shares 3,079 Value ($000) $212 Avg Close $61.31 Range $54.85 - $65.67

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2018	2,217	$256	$103.13	$88.32 - $120.60
Q4 2017	3,140	$297	$93.43	$82.69 - $103.63
Q3 2017	3,140	$297	$76.52	$62.45 - $89.48
Q2 2017	3,079	$207	$70.74	$60.40 - $82.65
Q1 2017	3,079	$212	$61.31	$54.85 - $65.67