Axcelis Technologies, Inc. insider trading

Bought

—

Sold

$2.4M

none on a 10b5-1 plan

Net

−$2.4M

Insiders

9

• Sayiner Necip

  Director

  −$249.7K

  Jun 03, 2026

  1,586 sh · $157.44

• Sutton Todd

  VP Corporate Controller

  −$320K

  May 27, 2026

  2,000 sh · $159.99

• St Dennis Thomas

  Director

  −$139.8K

  May 22, 2026

  900 sh · $155.37

• Evans Eileen

  EVP, General Counsel and Sec'y

  −$144K

  May 22, 2026

  926 sh · $155.51

• Blumenstock Gerald M

  EVP, Research, Dev. & Eng.

  −$177.3K

  May 21, 2026

  1,161 sh · $152.70

• Tatnall Christopher

  EVP Global Customer Operations

  −$174.6K

  May 20, 2026

  1,166 sh · $149.75

• Graves Gregory B

  Director

  −$371.2K

  May 19, 2026

  2,625 sh · $141.41

• Graves Gregory B

  Director

  −$85.5K

  May 19, 2026

  600 sh · $142.51

• Kurtzweil John T

  Director

  −$485.8K

  May 19, 2026

  3,500 sh · $138.79

• Quirk Jeanne

  Director

  −$250.9K

  May 19, 2026

  1,789 sh · $140.22

Largest sale

−$1.2M of ACLS by Low Russell (President And CEO · Director) on May 06, 2026, under a 10b5-1 plan.

From SEC's quarterly Form 3, 4 and 5 data sets: code P purchases and code S sales of common stock, by the date the trade happened. Where a fund and the people who control it each report the same block, it is counted once. Trades made in the last days of Q2 2026 but filed after it closed arrive with SEC's next quarterly release.

SEC industry classification

Special Industry Machinery, NEC

Headquarters

Beverly, MA

Incorporated in

DE

Listed on

Nasdaq

SEC Central Index Key

0001113232

Sourced from this company's own SEC submissions record. The industry label is SEC's Standard Industrial Classification, which is more specific than the Technology sector shown above.

The live dashboard is free to open. Alerts, watchlists, full filing history and each mover's benchmark-measured track record are Pro. Monitoring, not advice.

Open-market purchase (code P)

An insider spending their own money at market price. This is the only buy code that reliably carries signal — it is a decision, not compensation.

Grants and option exercises (codes A, M)

Scheduled compensation. Most "insider buying" headlines are really this, which is why InsiderPulse weights it at a fraction of a real purchase.

Cluster buy

Two or more different insiders buying on the open market in the same window. One executive buying can mean anything; three is much harder to explain away.

Are ACLS insiders buying or selling?

Between May 19, 2026 and Jun 03, 2026, 9 Axcelis Technologies, Inc. insiders made no open-market purchases and 10 sales worth $2.4M, a net sale of $2.4M.

How much ACLS stock have insiders bought and sold in the last two years?

Between Jul 01, 2024 and Jun 30, 2026, 13 Axcelis Technologies, Inc. insiders made no open-market purchases and 25 sales worth $7.2M. 4 of the sales were pre-scheduled under a Rule 10b5-1 plan. In the four quarters to Jun 30, 2026: no purchases and 23 sales ($6.4M). The largest sale was Low Russell selling $1.2M on May 06, 2026.

What was the largest recent ACLS insider trade?

Kurtzweil John T (Director) sold $485.8K of ACLS stock on May 19, 2026 at about $138.79 a share.

When did an insider last buy ACLS shares?

No open-market purchase by a Axcelis Technologies, Inc. insider appears in the filings from May 19, 2026 to Jun 03, 2026 — every recorded open-market transaction in that period was a sale.

Where does ACLS insider trading data come from?

From the Form 4 filings Axcelis Technologies, Inc.'s officers, directors and 10% owners must send the SEC within two business days of a trade. Each row on this page links to its original filing on SEC EDGAR. Share grants and option exercises are kept apart from open-market purchases and sales, because only the latter cost the insider their own money.