Low Russell 4

What Happened
Russell Low, President and CEO (and Director) of Axcelis Technologies (ACLS), sold 1,244 shares in an open-market transaction on March 24, 2026, at $90.00 per share for proceeds of $111,960. This was a sale (not a purchase), which many insiders use for routine liquidity and does not by itself indicate a change in company outlook.

Key Details

• Transaction date and price: March 24, 2026 — 1,244 shares sold at $90.00 per share.
• Total proceeds: $111,960.
• Shares/units after transaction: Of the shares held after this sale, 83,480 were issuable upon vesting of restricted stock units (RSUs) under the 2012 Equity Incentive Plan and remain subject to forfeiture. That amount includes RSUs earned at 112.5% of the 2025 grant based on performance.
• Footnotes: Transaction made pursuant to a Rule 10b5-1 trading plan adopted by Mr. Low on December 11, 2025.
• Filing timeliness: Report filed March 26, 2026 for a March 24 transaction — filed within the typical Form 4 reporting window (timely).

Context
A 10b5-1 plan indicates this sale was executed under a pre-established trading arrangement, which is commonly used to avoid questions about trading on nonpublic information. The filing also shows a substantial portion of Mr. Low’s post-sale holdings are performance-based RSUs that remain subject to forfeiture until vesting, so his economic exposure remains tied to future performance. Sales by executives are common and often represent personal liquidity rather than a signal about company fundamentals.