Robert John Mahoney insider trades: Axcelis Technologies (ACLS) stock sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Robert reports to the SEC
Open-market buys and sales
2 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Jun 2, 2026 | ACLS | ↓ Sell | 1,155 | $155.24 | $179K | Direct | Jun 3, 2026 (1d) |
| May 12, 2026 | ACLS | ↓ Sell | 2,258 | $161.00 | $364K | Direct | May 13, 2026 (1d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other ACLS insiders
Open-market trades in the last 12 months
About Robert John Mahoney's insider trades
Robert John Mahoney is EVP Global Operations at Axcelis Technologies (ACLS). Since May 12, 2026, Robert has reported no open-market purchases and 2 sales worth $543K on SEC Form 4. In the last 12 months: 2 sales ($543K).
Their filings also include shares withheld for taxes (3 filings), grants and awards (2 filings). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every ACLS insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.