Russell Low - 16 May 2025 Form 4 Insider Report for AXCELIS TECHNOLOGIES INC (ACLS)

Role
PRESIDENT AND CEO, Director
Signature
/s/ Eileen J. Evans, Attorney-in-Fact
Issuer symbol
ACLS
Transactions as of
16 May 2025
Net transactions value
-$102,568
Form type
4
Filing time
20 May 2025, 16:30:13 UTC
Previous filing
19 May 2025
Next filing
03 Mar 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Low Russell PRESIDENT AND CEO, Director C/O AXCELIS TECHNOLOGIES, INC., 108 CHERRY HILL DRIVE, BEVERLY /s/ Eileen J. Evans, Attorney-in-Fact 20 May 2025 0001689237

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction ACLS Common Stock Tax liability $43,845 -712 -0.52% $61.58 137,142 16 May 2025 Direct F1, F2, F3
transaction ACLS Common Stock Tax liability $58,723 -947 -0.69% $62.01 136,155 17 May 2025 Direct F2, F4, F5
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 This forfeiture of shares for tax withholding purposes relates to the vesting on May 16, 2025 of service vesting restricted stock units granted to the executive in May 2022. As agreed with the executive, the shares issued to the executive on the vesting were reduced by a number of shares having a value equal to the executive's tax withholding obligation with respect to the vested restricted stock units.
F2 Represents the closing price of the common stock on the date of the tax withholding.
F3 Of the shares held after this vesting event on May 16, 2025, 92,361 were issuable on vesting of restricted stock units granted to the reporting person under the 2012 Equity Incentive Plan and are subject to forfeiture.
F4 This forfeiture of shares for tax withholding purposes relates to the vesting on May 17, 2025 of service-vesting restricted stock units ("RSUs") granted to the executive in May 2021. As agreed with the executive, the shares issued to the executive on the vesting were reduced by a number of shares having a value equal to the executive's tax withholding obligation with respect to the vested RSUs.
F5 Of the shares held after this vest event on May 17, 2025,90,321 shares were issuable on vesting of restricted stock units granted to the executive under the 2012 Equity Incentive Plan and are subject to forfeiture.