MKS INSTRS INC

Ticker: MKSI CUSIP: 55306N104 Class: EQTY

Summit Street Capital Management, LLC's Holding History (CIK: 0001595533)

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

Q4 2019

Shares 39,656 Value ($000) $4,363 Avg Close $99.99 Range $81.07 - $109.78

Q3 2019

Shares 55,472 Value ($000) $5,119 Avg Close $78.64 Range $68.69 - $91.29

Q2 2019

Shares 39,656 Value ($000) $3,089 Avg Close $80.27 Range $67.03 - $98.53

Q1 2019

Shares 43,835 Value ($000) $4,079 Avg Close $76.40 Range $59.36 - $88.91

Q4 2018

Shares 39,656 Value ($000) $2,562 Avg Close $68.31 Range $53.35 - $77.61

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2019	39,656	$4,363	$99.99	$81.07 - $109.78
Q3 2019	55,472	$5,119	$78.64	$68.69 - $91.29
Q2 2019	39,656	$3,089	$80.27	$67.03 - $98.53
Q1 2019	43,835	$4,079	$76.40	$59.36 - $88.91
Q4 2018	39,656	$2,562	$68.31	$53.35 - $77.61