Robert John Mahoney
Robert John Mahoney: EVP Global Operations at Axcelis Technologies. What Robert John Mahoney holds in an AI or semiconductor company tracked on Silicon Floor, from their SEC filings, broken down: the shares held and how, then any restricted shares, options or other rights declared.
Axcelis Technologies (ACLS)
Robert John Mahoney holds 14,410 Axcelis Technologies shares (0.05% of the company), worth about $2.1M at the last price, according to the Form 4 of Jun 2, 2026.
- Shares held: 14,410 (0.05%), $2.1M — Held in their own name.
Declarations
- Axcelis Technologies (ACLS) — Form 4 of Jun 2, 2026 (EVP Global Operations): open-market sale of 1,155 at $155.24; 14,410 shares after 0002101601-26-000012
- Axcelis Technologies (ACLS) — Form 4 of May 18, 2026 (EVP Global Operations): shares withheld for tax of 182 at $146.24; shares withheld for tax of 130 at $146.24; 15,565 shares after 0002101601-26-000010
- Axcelis Technologies (ACLS) — Form 4 of May 15, 2026 (EVP Global Operations): grant or award of 1,947; grant or award of 1,947; 15,877 shares after 0002101601-26-000008
- Axcelis Technologies (ACLS) — Form 4 of May 12, 2026 (EVP Global Operations): open-market sale of 2,258 at $161.00; 12,759 shares after 0002101601-26-000006
- Axcelis Technologies (ACLS) — Form 4 of Mar 2, 2026 (EVP Global Operations): shares withheld for tax of 573 at $86.58; 14,633 shares after 0002101601-26-000004
- Axcelis Technologies (ACLS) — Form 4 of Jan 15, 2026 (EVP Global Operations): grant or award of 1,734; 15,206 shares after 0002101601-26-000002
- Axcelis Technologies (ACLS) — Form 3 of Dec 19, 2025 (EVP Global Operations); 13,472 shares after 0002101601-25-000002
Sources: SEC Schedules 13D and 13G (stakes above 5%, which count everything a person votes or can acquire within 60 days) and Forms 3, 4 and 5 (the shares a director, officer or 10% owner holds, filed within two business days of each trade). Values at the last price.