Insider · CIK 0002101601
Robert John Mahoney
Files at ACLS (AXCELIS TECHNOLOGIES INC). First filing May 13, 2026, latest Jun 3, 2026.
In brief
Robert John Mahoney files SEC Form 4 as officer at ACLS (AXCELIS TECHNOLOGIES INC). Since May 13, 2026, Robert John Mahoney has reported 0 open-market buys worth $0 and 2 open-market sells worth $543k, the latest filed on Jun 3, 2026.
A track record needs three past buys with six months of prices behind them; Robert John Mahoney has 0, so none is measured yet.
The newest scored trade: sold $179k of ACLS on Jun 2, 2026, filed Jun 3, 2026, scored 42 (moderate). In the last 12 months: 0 buys worth $0 and 2 sells worth $543k.
Where the trades landed
Last year at the company this insider has traded most, with each buy and sell on the bar it happened.
ACLS: AXCELIS TECHNOLOGIES INC
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™
Signals
This insider’s open-market buys and sells, scored.
| Score | Company | Value | Holdings | Price context | Filed |
|---|---|---|---|---|---|
| 42Moderate | AXCELIS TECHNOLOGIES INC | $179k 1,155 shares | -7% | +181% from low-7% from high | |
| 50Moderate | AXCELIS TECHNOLOGIES INC | $364k 2,258 shares | -15% | +187% from low-5% from high |
Planned sales
Form 144 notices this insider filed before selling restricted or control stock, newest first.
| Filed | Company | Shares | Value | Sale date | Past 3 months |
|---|---|---|---|---|---|
| Jun 2, 2026 | ACLS AXCELIS TECHNOLOGIES, INC. | 1,155 0.00% of outstanding | $179k | Jun 2, 2026 | $364k |
| May 12, 2026 | ACLS AXCELIS TECHNOLOGIES, INC. | 2,258 0.01% of outstanding | $364k | May 12, 2026 | none |
Transactions
Every row this insider has filed, 12 in all, newest first.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Jun 2, 2026 | ACLS AXCELIS TECHNOLOGIES INC | SOpen-market sale Common Stock | -1,155 | $155.24 | $179k | 14,410 | Jun 3, 2026 |
| May 18, 2026 | ACLS AXCELIS TECHNOLOGIES INC | FTax withholding Common Stock | -182 | $146.24 | $27k | 15,695 | May 20, 2026 |
| May 18, 2026 | ACLS AXCELIS TECHNOLOGIES INC | FTax withholding Common Stock | -130 | $146.24 | $19k | 15,565 | May 20, 2026 |
| May 15, 2026 | ACLS AXCELIS TECHNOLOGIES INC | AGrant or award Common Stock | +1,947 | $0.00 | $0 | 14,706 | May 19, 2026 |
| May 15, 2026 | ACLS AXCELIS TECHNOLOGIES INC | AGrant or award Common Stock | +1,947 | $0.00 | $0 | 16,653 | May 19, 2026 |
| May 15, 2026 | ACLS AXCELIS TECHNOLOGIES INC | FTax withholding Common Stock | -372 | $155.18 | $58k | 16,281 | May 19, 2026 |
| May 15, 2026 | ACLS AXCELIS TECHNOLOGIES INC | FTax withholding Common Stock | -173 | $155.18 | $27k | 16,108 | May 19, 2026 |
| May 15, 2026 | ACLS AXCELIS TECHNOLOGIES INC | FTax withholding Common Stock | -170 | $155.18 | $26k | 15,938 | May 19, 2026 |
| May 15, 2026 | ACLS AXCELIS TECHNOLOGIES INC | FTax withholding Common Stock | -61 | $155.18 | $9,466 | 15,877 | May 19, 2026 |
| May 12, 2026 | ACLS AXCELIS TECHNOLOGIES INC | SOpen-market sale Common Stock | -2,258 | $161.00 | $364k | 12,759 | May 13, 2026 |
| Mar 2, 2026 | ACLS AXCELIS TECHNOLOGIES INC | FTax withholding Common Stock | -573 | $86.58 | $50k | 14,633 | Mar 3, 2026 |
| Jan 15, 2026 | ACLS AXCELIS TECHNOLOGIES INC | AGrant or award Common Stock | +1,734 | $0.00 | $0 | 15,206 | Jan 16, 2026 |
Questions about Robert John Mahoney
Answered from the filings on this page, as of the latest one.
Is Robert John Mahoney buying or selling?
In the last 12 months Robert John Mahoney reported 0 open-market buys worth $0 and 2 open-market sells worth $543k on SEC Form 4; the latest was sold $179k of ACLS on Jun 2, 2026. Grants, option exercises and tax withholding are not counted.
How did Robert John Mahoney's past buys perform?
Not measured yet. InsiderTell needs three past buys with six months of prices to publish a track record, and Robert John Mahoney has 0.
Where does Robert John Mahoney file Form 4?
Robert John Mahoney has filed Form 4 at ACLS (AXCELIS TECHNOLOGIES INC) as EVP Global Operations. A Form 4 is required of officers, directors and holders of more than 10% of a share class within two business days of a trade.
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.