MKS INSTRS INC

Ticker: MKSI CUSIP: 55306N104 Class: EQTY

abrdn plc's Holding History (CIK: 0001716774)

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

Q2 2021

Shares 158,525 Value ($000) $28,222 Avg Close $175.09 Range $158.98 - $192.11

Q1 2021

Shares 121,275 Value ($000) $22,502 Avg Close $161.78 Range $138.78 - $185.00

Q4 2020

Shares 139,079 Value ($000) $20,928 Avg Close $125.75 Range $101.82 - $152.08

Q3 2020

Shares 146,241 Value ($000) $15,968 Avg Close $112.47 Range $97.77 - $124.64

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2021	158,525	$28,222	$175.09	$158.98 - $192.11
Q1 2021	121,275	$22,502	$161.78	$138.78 - $185.00
Q4 2020	139,079	$20,928	$125.75	$101.82 - $152.08
Q3 2020	146,241	$15,968	$112.47	$97.77 - $124.64