MKS INSTRS INC

Ticker: MKSI CUSIP: 55306N104 Class: EQTY

SummitTX Capital, L.P.'s Holding History (CIK: 0002052310)

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

Q4 2025

Shares 205,750 Value ($000) $32,879 Avg Close $148.21 Range $120.73 - $170.37

Q3 2025

Shares 196,734 Value ($000) $24,350 Avg Close $106.31 Range $88.17 - $132.24

Q2 2025

Shares 150,953 Value ($000) $14,999 Avg Close $80.86 Range $54.50 - $100.44

Q1 2025

Shares 132,293 Value ($000) $10,603 Avg Close $100.21 Range $75.89 - $124.28

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	205,750	$32,879	$148.21	$120.73 - $170.37
Q3 2025	196,734	$24,350	$106.31	$88.17 - $132.24
Q2 2025	150,953	$14,999	$80.86	$54.50 - $100.44
Q1 2025	132,293	$10,603	$100.21	$75.89 - $124.28