MKS INSTRS INC

Ticker: MKSI CUSIP: 55306N104 Class: EQTY

PRIVATE TRUST CO NA's Holding History (CIK: 0001277557)

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

Q3 2023

Shares 9 Value ($000) $1 Avg Close $95.58 Range $81.25 - $107.67

Q2 2023

Shares 24 Value ($000) $3 Avg Close $89.53 Range $77.81 - $108.20

Q1 2023

Shares 24 Value ($000) $2 Avg Close $93.12 Range $80.00 - $111.27

Q4 2022

Shares 24 Value ($000) $0 Avg Close $78.00 Range $62.97 - $89.22

Q3 2022

Shares 8 Value ($000) $1 Avg Close $100.01 Range $79.23 - $120.27

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2023	9	$1	$95.58	$81.25 - $107.67
Q2 2023	24	$3	$89.53	$77.81 - $108.20
Q1 2023	24	$2	$93.12	$80.00 - $111.27
Q4 2022	24	$0	$78.00	$62.97 - $89.22
Q3 2022	8	$1	$100.01	$79.23 - $120.27