AXCELIS TECHNOLOGIES INC — Director's Dealing 2018

May 17, 2018

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: AXCELIS TECHNOLOGIES INC (ACLS)
CIK: 0001113232
Period of Report: 2018-05-16

Reporting Person: KEITHLEY JOSEPH P (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2018-05-16	Common Stock	A	5637	$0.00	Acquired	27076	Direct

Footnotes

F1: These shares are issuable on vesting of restricted stock units granted under the Company's 2012 Equity Incentive Plan. Assuming continuation of service on the Board of Directors, these restricted stock units will vest on November 16, 2018.

F2: Of the shares held as of May 16, 2018, 5,637 were issuable on vesting of restricted stock units granted to the director under the 2012 Equity Incentive Plan and are subject to forfeiture.