Blumenstock Gerald M 4

What Happened
Gerald M. Blumenstock, EVP of Research, Development & Engineering at Axcelis Technologies (ACLS), sold 1,015 shares in an open-market transaction on May 14, 2026 at $162.31 per share, generating proceeds of $164,750. This was a sale (S) reported on Form 4; sales are often routine liquidity events and do not by themselves indicate a change in insider sentiment.

Key Details

• Transaction date and price: May 14, 2026 — 1,015 shares sold at $162.31 per share.
• Total proceeds: $164,750.
• Shares held after transaction: The filing notes that of the shares held after the sale, 17,293 shares were issuable upon vesting of restricted stock units (RSUs) and remain subject to forfeiture.
• Footnote: The 17,293 RSUs include units earned at 112.5% payout based on achievement of 2025 performance goals under the 2012 Equity Incentive Plan.
• Filing timeliness: Form 4 was filed on May 15, 2026 (the day after the transaction), so the report appears timely.

Context
This was an open-market sale (not an option exercise, gift, or award). Sales by executives can be for many personal reasons (diversification, taxes, liquidity) and are common; they are less informative than purchases when inferring insider conviction. No 10b5‑1 trading plan or tax-withholding note is indicated in the filing.