Joseph P. Keithley - May 17, 2023 Form 4 Insider Report for AXCELIS TECHNOLOGIES INC (ACLS)

Role: Director
Signature: Lynnette C. Fallon, as attorney in fact for Joseph P. Keithley
Stock symbol: ACLS
Transactions as of: May 17, 2023
Transactions value $: -$419,360
Form type: 4
Date filed: 5/19/2023, 04:15 PM
Previous filing: May 16, 2023
Next filing: Jun 6, 2023

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	ACLS	Common Stock	Sale	-$135K	-1K	-9.38%	$134.50	9.66K	May 17, 2023	Direct	F1
transaction	ACLS	Common Stock	Sale	-$142K	-1K	-10.36%	$141.77	8.66K	May 18, 2023	Direct	F1, F2
transaction	ACLS	Common Stock	Sale	-$143K	-1K	-11.55%	$143.09	7.66K	May 18, 2023	Direct	F1

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Of the shares held as of May 17, 2023 and May 18, 2023, 1,282 were issuable on vesting of restricted stock units granted to the director under the 2012 Equity Incentive Plan and are subject to forfeiture.
F2	The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $141.60 to $141.80, inclusive. The reporting person undertakes to provide to Axcelis Technologies, Inc., any security holder of Axcelis Technologies, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.

Content

Of the shares held as of May 17, 2023 and May 18, 2023, 1,282 were issuable on vesting of restricted stock units granted to the director under the 2012 Equity Incentive Plan and are subject to forfeiture.

The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $141.60 to $141.80, inclusive. The reporting person undertakes to provide to Axcelis Technologies, Inc., any security holder of Axcelis Technologies, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.