AXCELIS TECHNOLOGIES INC — Director's Dealing 2020

May 11, 2020

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: AXCELIS TECHNOLOGIES INC (ACLS)
CIK: 0001113232
Period of Report: 2020-05-11

Reporting Person: St Dennis Thomas (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2020-05-11	Common Stock	S	6000	$26.61	Disposed	19058	Direct

Footnotes

F1: This sale of shares was made to cover the tax liability incident to the 2019 vesting of shares on restricted stock units previously granted to the director.

F2: The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $26.61 to $26.64, 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.