Greg Redinbo - 15 May 2025 Form 4 Insider Report for AXCELIS TECHNOLOGIES INC (ACLS)

Signature
/s/ Eileen J. Evans, Attorney-in-Fact
Issuer symbol
ACLS
Transactions as of
15 May 2025
Net transactions value
-$24,191
Form type
4
Filing time
19 May 2025, 16:30:29 UTC
Previous filing
04 Mar 2025
Next filing
20 May 2025

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Redinbo Greg EVP MARKETING AND APPLICATIONS C/O AXCELIS TECHNOLOGIES, INC., 108 CHERRY HILL DRIVE, BEVERLY /s/ Eileen J. Evans, Attorney-in-Fact 16 May 2025 0001940017

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction ACLS Common Stock Award $0 +6,148 +28% $0.000000 28,031 15 May 2025 Direct F1, F2
transaction ACLS Common Stock Award $0 +6,148 +22% $0.000000 34,179 15 May 2025 Direct F3, F4
transaction ACLS Common Stock Tax liability $13,098 -209 -0.61% $62.67 33,970 15 May 2025 Direct F5, F6, F7
transaction ACLS Common Stock Tax liability $11,093 -177 -0.52% $62.67 33,793 15 May 2025 Direct F6, F8, F9
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 These shares are issuable on vesting of restricted stock units granted under the Company's 2012 Equity Incentive Plan on May 15, 2025. Assuming continuation of employment, these restricted stock units will vest as to 25% of the shares granted on each of May 15, 2026, May 15, 2027, May 15, 2028, and May 15, 2029.
F2 Of the shares held following this grant on May 15, 2025, 18,133 were issuable on vesting of restricted stock units granted to the executive under the 2012 Equity Incentive Plan and are subject to forfeiture.
F3 These shares are issuable on vesting of restricted stock units granted under the Company's 2012 Equity Incentive Plan on May 15, 2025. In this grant, the executive may earn shares of common stock, ranging from zero to 150% of the granted units. The shares are earned based on the achievement of 2025 performance goals. Assuming continuation of employment, 50% of the earned shares will vest on February 28, 2027, and 50% of the earned shares will vest on February 28, 2028. Unearned restricted stock units will forfeit on February 28, 2026.
F4 Of the shares held after this grant on May 15, 2025, 24,281 shares were issuable on vesting of restricted stock units granted to the executive under the 2012 Equity Incentive Plan and are subject to forfeiture.
F5 This forfeiture of shares for tax withholding purposes relates to the vesting on May 15, 2025 of service vesting restricted stock units granted to the executive in May 2024. 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.
F6 Represents the closing price of the common stock on the date of the tax withholding.
F7 Of the shares held after this vesting event on May 15, 2025, 23,569 were issuable on vesting of restricted stock units granted to the reporting person under the 2012 Equity Incentive Plan and are subject to forfeiture.
F8 This forfeiture of shares for tax withholding purposes relates to the vesting on May 15, 2025 of service vesting restricted stock units granted to the executive in May 2023. 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.
F9 Of the shares held after this vesting event on May 15, 2025, 22,968 were issuable on vesting of restricted stock units granted to the reporting person under the 2012 Equity Incentive Plan and are subject to forfeiture.