MKS INSTRS INC

Ticker: MKSI CUSIP: 55306N104 Class: EQTY

Summit Trail Advisors, LLC's Holding History (CIK: 0001698478)

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

Q4 2025

Shares 14,172 Value ($000) $2,265 Avg Close $148.21 Range $120.73 - $170.37

Q3 2025

Shares 13,601 Value ($000) $1,683 Avg Close $106.31 Range $88.17 - $132.24

Q2 2025

Shares 2,496 Value ($000) $248 Avg Close $80.86 Range $54.50 - $100.44

Q4 2017

Shares 5 Value ($000) $0 Avg Close $93.43 Range $82.69 - $103.63

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	14,172	$2,265	$148.21	$120.73 - $170.37
Q3 2025	13,601	$1,683	$106.31	$88.17 - $132.24
Q2 2025	2,496	$248	$80.86	$54.50 - $100.44
Q4 2017	5	$0	$93.43	$82.69 - $103.63