MKS INSTRS INC

Ticker: MKSI CUSIP: 55306N104 Class: EQTY

OSSIAM's Holding History (CIK: 0001767471)

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

Q3 2025

Shares 41,215 Value ($000) $5,101 Avg Close $106.31 Range $88.17 - $132.24

Q2 2023

Shares 2,727 Value ($000) $295 Avg Close $89.53 Range $77.81 - $108.20

Q1 2023

Shares 1,445 Value ($000) $128 Avg Close $93.12 Range $80.00 - $111.27

Q4 2022

Shares 819 Value ($000) $69 Avg Close $78.00 Range $62.97 - $89.22

Q3 2022

Shares 819 Value ($000) $68 Avg Close $100.01 Range $79.23 - $120.27

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2025	41,215	$5,101	$106.31	$88.17 - $132.24
Q2 2023	2,727	$295	$89.53	$77.81 - $108.20
Q1 2023	1,445	$128	$93.12	$80.00 - $111.27
Q4 2022	819	$69	$78.00	$62.97 - $89.22
Q3 2022	819	$68	$100.01	$79.23 - $120.27