AMTECH SYS INC

Ticker: ASYS CUSIP: 032332504 Class: COM PAR $0.01N

Boston Partners's Holding History (CIK: 0001386060)

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

Q1 2021

Shares 53,916 Value ($000) $637 Avg Close $9.25 Range $6.25 - $13.20

Q4 2020

Shares 103,511 Value ($000) $660 Avg Close $5.95 Range $4.90 - $7.17

Q3 2020

Shares 29,638 Value ($000) $145 Avg Close $5.15 Range $4.71 - $5.94

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2021	53,916	$637	$9.25	$6.25 - $13.20
Q4 2020	103,511	$660	$5.95	$4.90 - $7.17
Q3 2020	29,638	$145	$5.15	$4.71 - $5.94