Form 4: Axcelis Technologies Executive Reports Routine Stock Forfeiture for Tax Withholding

Gerald M. Blumenstock, EVP of Research, Development & Engineering at Axcelis Technologies Inc., reported the forfeiture of 506 shares of common stock valued at $68.96 per share for tax withholding purposes following the vesting of restricted stock units.

Summary

• Gerald M. Blumenstock, Executive Vice President of Research, Development & Engineering at Axcelis Technologies Inc. (ACLS), reported a transaction on June 16, 2025.
• The transaction involved the forfeiture of 506 shares of Axcelis Technologies common stock.
• These shares were forfeited for tax withholding obligations related to the vesting of service vesting restricted stock units (RSUs) that were granted to Mr. Blumenstock in June 2023.
• The value of the forfeited shares was based on the closing price of the common stock on the date of tax withholding, which was $68.96 per share.
• Following this reported transaction, Mr. Blumenstock beneficially owns 21,695 shares of Axcelis Technologies common stock.
• Of the shares beneficially owned, 18,661 shares are issuable upon the future vesting of restricted stock units granted under the 2012 Equity Incentive Plan and remain subject to forfeiture conditions.

Sentiment

Score: 5

Explanation: The transaction is a neutral, routine event related to executive compensation and tax obligations, with no significant positive or negative implications for the company's operations or financial health.

Positives

• The transaction is a standard and expected event associated with the vesting of executive compensation in the form of restricted stock units, indicating the executive is receiving earned compensation.

Negatives

• 506 shares of common stock were forfeited, which technically reduces the executive's direct shareholding, although this is a mandatory tax-related event rather than a discretionary sale.

Future Outlook

This document, an SEC Form 4, details a specific insider transaction related to executive compensation and does not provide information regarding the company's future outlook or guidance.

Industry Context

This Form 4 filing reports a routine executive compensation event (tax withholding upon RSU vesting) and does not provide broader industry context or trends.

Comparison to Industry Standards

• The forfeiture of shares for tax withholding upon the vesting of restricted stock units is a common and standard practice for executive compensation across various industries, including the semiconductor equipment sector where Axcelis Technologies operates.
• This mechanism ensures that the executive's tax obligations arising from the RSU vesting are met directly by the company, which is a widely adopted approach in corporate compensation structures.

Stakeholder Impact

• Shareholders: Minimal direct impact, as this is a routine executive compensation tax event and not a discretionary sale or a significant change in ownership structure.
• Employees: No direct impact on the broader employee base.
• Customers/Suppliers/Creditors: No direct impact on these stakeholders as the transaction is internal to executive compensation.

Key Dates

Keywords

Axcelis Technologies, ACLS, SEC Form 4, insider transaction, executive compensation, restricted stock units, RSU vesting, tax withholding, Gerald M. Blumenstock