MKS INSTRS INC

Ticker: MKSI CUSIP: 55306N104 Class: EQTY

ATLAS CAPITAL ADVISORS LLC's Holding History (CIK: 0001434165)

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

Q4 2025

Shares 5,971 Value ($000) $954 Avg Close $148.21 Range $120.73 - $170.37

Q1 2025

Shares 71 Value ($000) $6 Avg Close $100.21 Range $75.89 - $124.28

Q4 2024

Shares 71 Value ($000) $7 Avg Close $106.91 Range $96.54 - $118.37

Q3 2024

Shares 99 Value ($000) $11 Avg Close $117.45 Range $99.10 - $145.63

Q2 2024

Shares 160 Value ($000) $21 Avg Close $124.55 Range $105.72 - $137.52

Q1 2024

Shares 188 Value ($000) $25 Avg Close $114.51 Range $94.23 - $132.85

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	5,971	$954	$148.21	$120.73 - $170.37
Q1 2025	71	$6	$100.21	$75.89 - $124.28
Q4 2024	71	$7	$106.91	$96.54 - $118.37
Q3 2024	99	$11	$117.45	$99.10 - $145.63
Q2 2024	160	$21	$124.55	$105.72 - $137.52
Q1 2024	188	$25	$114.51	$94.23 - $132.85