MKS INSTRS INC

Ticker: MKSI CUSIP: 55306N104 Class: EQTY

BLAIR WILLIAM & CO/IL's Holding History (CIK: 0000902367)

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

Q2 2023

Shares 3,830 Value ($000) $414 Avg Close $89.53 Range $77.81 - $108.20

Q1 2023

Shares 3,240 Value ($000) $287 Avg Close $93.12 Range $80.00 - $111.27

Q4 2022

Shares 3,221 Value ($000) $273 Avg Close $78.00 Range $62.97 - $89.22

Q3 2022

Shares 3,404 Value ($000) $281 Avg Close $100.01 Range $79.23 - $120.27

Q2 2022

Shares 3,696 Value ($000) $379 Avg Close $112.92 Range $94.75 - $148.07

Q1 2022

Shares 3,815 Value ($000) $572 Avg Close $150.35 Range $131.30 - $175.09

Q4 2021

Shares 2,470 Value ($000) $430 Avg Close $151.09 Range $136.06 - $172.80

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2023	3,830	$414	$89.53	$77.81 - $108.20
Q1 2023	3,240	$287	$93.12	$80.00 - $111.27
Q4 2022	3,221	$273	$78.00	$62.97 - $89.22
Q3 2022	3,404	$281	$100.01	$79.23 - $120.27
Q2 2022	3,696	$379	$112.92	$94.75 - $148.07
Q1 2022	3,815	$572	$150.35	$131.30 - $175.09
Q4 2021	2,470	$430	$151.09	$136.06 - $172.80