InsiderTrades.com logo

ACLS Insider Trading

Insider Ownership Percentage: 0.49%
Insider Buying (Last 12 Months): $0.00
Insider Selling (Last 12 Months): $744,698.54

Axcelis Technologies Insider Trading History Chart

This chart shows the insider buying and selling history at Axcelis Technologies by year and by quarter.

Skip ChartChart Data in Insider Trading History Table

Axcelis Technologies Share Price & Price History

Current Price: $139.99
Price Change: ▲ Price Increase of +0.88 (0.63%)
As of 05/1/2026 04:00 PM ET

This chart shows the closing price history over time for ACLS up to the past year.

Skip Chart and Table DataPrice Data in Insider Trading History Table
Days: 30 | 90 | 365

Axcelis Technologies Insider Trading History

Transaction DateInsider NameTitleBuy/SellNumber of SharesAverage Share PriceTotal TransactionShares Held After TransactionDetails
4/1/2026Russell LowCEOSell1,244$94.06$117,010.64132,282View SEC Filing Icon  
2/20/2026Jorge TitingerDirectorSell1,000$80.00$80,000.006,477View SEC Filing Icon  
12/17/2025Jorge TitingerDirectorSell2,000$86.05$172,100.007,477View SEC Filing Icon  
12/11/2025Gerald M BlumenstockEVPSell3,034$89.46$271,421.6418,661View SEC Filing Icon  
5/20/2025John T. KurtzweilDirectorSell1,682$61.93$104,166.2635,050View SEC Filing Icon  
8/6/2024Jorge TitingerDirectorSell6,086$109.98$669,338.285,891View SEC Filing Icon  
5/20/2024John T. KurtzweilDirectorSell1,200$114.42$137,304.0033,146View SEC Filing Icon  
2/23/2024Douglas A LawsonEVPBuy500$111.04$55,520.0019,648View SEC Filing Icon  
11/10/2023Joseph P KeithleyDirectorSell500$130.43$65,215.004,157View SEC Filing Icon  
9/14/2023Greg RedinboEVPSell600$180.18$108,108.0017,203View SEC Filing Icon  
8/7/2023Douglas A LawsonEVPSell375$177.45$66,543.7518,342View SEC Filing Icon  
6/12/2023Jeanne QuirkDirectorSell900$177.41$159,669.007,782View SEC Filing Icon  
6/12/2023Mary G PumaInsiderSell11,800$181.80$2,145,240.00263,058View SEC Filing Icon  
6/9/2023Douglas A LawsonEVPSell400$175.00$70,000.0018,717View SEC Filing Icon  
6/7/2023Lynnette C FallonVPSell1,584$172.73$273,604.3234,469View SEC Filing Icon  
6/7/2023Mary G PumaInsiderSell21,701$173.58$3,766,859.58278,985View SEC Filing Icon  
6/6/2023Joseph P KeithleyDirectorSell1,000$163.50$163,500.005,657View SEC Filing Icon  
5/26/2023Douglas A LawsonEVPSell200$153.00$30,600.0019,117View SEC Filing Icon  
5/25/2023Joseph P KeithleyDirectorSell1,000$152.21$152,210.009,657View SEC Filing Icon  
5/18/2023John T. KurtzweilDirectorSell2,689$138.69$372,937.4132,684View SEC Filing Icon  
5/18/2023Lynnette C FallonVPSell2,410$141.55$341,135.5037,934View SEC Filing Icon  
5/18/2023Mary G PumaInsiderSell8,578$141.52$1,213,958.56320,408View SEC Filing Icon  
5/17/2023Greg RedinboEVPSell1,000$135.00$135,000.0018,537View SEC Filing Icon  
5/16/2023Kevin J. BrewerCFOSell6,505$130.84$851,114.2029,005View SEC Filing Icon  
5/16/2023Lynnette C FallonVPSell4,120$129.84$534,940.8041,844View SEC Filing Icon  
5/16/2023Russell LowCEOSell8,309$130.76$1,086,484.8471,239View SEC Filing Icon  
5/15/2023Joseph P KeithleyDirectorSell3,000$126.07$378,210.0010,375View SEC Filing Icon  
5/11/2023Kevin J. BrewerCFOSell10,546$125.06$1,318,882.7636,277View SEC Filing Icon  
5/11/2023Mary G PumaInsiderSell21,705$125.00$2,713,125.00332,412View SEC Filing Icon  
5/10/2023Douglas A LawsonEVPSell5,734$122.00$699,548.0035,205View SEC Filing Icon  
5/9/2023Tzu Yin ChiuDirectorSell10,000$118.50$1,185,000.0018,873View SEC Filing Icon  
See Full Table

SEC Filings (Institutional Ownership Changes) for Axcelis Technologies (NASDAQ:ACLS)

89.98% of Axcelis Technologies stock is owned by institutions. Institutional ownership can be a sign of analyst confidence in the fundamentals of the stock.

Institutional Buying and Selling by Quarter

This chart shows the instiutional buying and selling at ACLS by year and by quarter.

Skip Institutional Buying and Selling Chart and Table DataRead Chart Data in Institutional Trading History Table

Axcelis Technologies Institutional Trading History

Reporting DateHedge FundShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
5/1/2026Commonwealth of Pennsylvania Public School Empls Retrmt SYS6,592$0.61M0.0%-1.2%0.021%Search for SEC Filing on Google Icon
5/1/2026Fifth Third Bancorp9,059$0.84M0.0%+2,290.2%0.029%Search for SEC Filing on Google Icon
5/1/2026ARGA Investment Management LP41,408$3.85M0.1%+123.4%0.135%Search for SEC Filing on Google Icon
4/30/2026Hsbc Holdings PLC11,443$1.07M0.0%-6.6%0.037%Search for SEC Filing on Google Icon
4/30/2026Peterson Wealth Services7,889$0.73M0.2%+6.6%0.026%Search for SEC Filing on Google Icon
4/30/2026Isthmus Partners LLC39,357$3.66M0.4%-5.1%0.128%Search for SEC Filing on Google Icon
4/29/2026KERR FINANCIAL PLANNING Corp2,150$0.20M0.3%-11.3%0.007%Search for SEC Filing on Google Icon
4/29/2026Burney Co.16,845$1.57M0.0%-31.9%0.055%Search for SEC Filing on Google Icon
4/28/2026Praxis Investment Management Inc.2,766$0.26M0.0%-43.3%0.009%Search for SEC Filing on Google Icon
4/28/2026QRG Capital Management Inc.9,596$0.89M0.0%+237.6%0.031%Search for SEC Filing on Google Icon
4/27/2026New York State Teachers Retirement System14,857$1.38M0.0%-6.4%0.048%Search for SEC Filing on Google Icon
4/27/2026Private Advisor Group LLC2,978$0.28M0.0%-92.3%0.010%Search for SEC Filing on Google Icon
4/25/2026Strs Ohio2,500$0.23M0.0%-26.5%0.008%Search for SEC Filing on Google Icon
4/25/2026Eagle Bay Advisors LLC6,200$0.58M0.5%+93.8%0.020%Search for SEC Filing on Google Icon
4/25/2026Boston Trust Walden Corp378,525$35.23M0.3%-11.5%1.232%Search for SEC Filing on Google Icon
4/24/2026James Investment Research Inc.3,408$0.32M0.0%-58.8%0.011%Search for SEC Filing on Google Icon
4/22/2026Janney Montgomery Scott LLC22,150$2.06M0.0%-1.3%0.072%Search for SEC Filing on Google Icon
4/22/2026Pictet Asset Management Holding SA4,881$0.45M0.0%+13.5%0.016%Search for SEC Filing on Google Icon
4/22/2026Sterling Capital Management LLC969$90K0.0%-42.0%0.003%Search for SEC Filing on Google Icon
4/21/2026Wealth Effects LLC3,571$0.33M0.1%-2.1%0.012%Search for SEC Filing on Google Icon
4/21/2026Wesbanco Bank Inc.12,800$1.19M0.0%N/A0.042%Search for SEC Filing on Google Icon
4/21/2026Penbrook Management LLC12,095$1.13M0.9%-23.9%0.039%Search for SEC Filing on Google Icon
4/21/2026Louisiana State Employees Retirement System13,600$1.27M0.0%N/A0.044%Search for SEC Filing on Google Icon
4/18/2026CENTRAL TRUST Co1,237$0.12M0.0%-8.4%0.004%Search for SEC Filing on Google Icon
4/16/2026SG Americas Securities LLC3,375$0.31M0.0%-76.2%0.011%Search for SEC Filing on Google Icon
4/16/2026Evolve Private Wealth LLC7,706$0.72M0.0%+9.6%0.025%Search for SEC Filing on Google Icon
3/20/2026Hsbc Holdings PLC12,254$0.99M0.0%-41.0%0.040%Search for SEC Filing on Google Icon
3/17/2026Rockefeller Capital Management L.P.1,357$0.11M0.0%+69.2%0.004%Search for SEC Filing on Google Icon
3/9/2026Corient Private Wealth LLC5,792$0.47M0.0%+4.0%0.019%Search for SEC Filing on Google Icon
2/24/2026Pacer Advisors Inc.3,615$0.29M0.0%-19.4%0.012%Search for SEC Filing on Google Icon
2/19/2026Invesco Ltd.478,897$38.48M0.0%+23.8%1.560%Search for SEC Filing on Google Icon
2/18/2026Ameriflex Group Inc.1,180$95K0.0%N/A0.004%Search for SEC Filing on Google Icon
2/18/2026Mercer Global Advisors Inc. ADV3,721$0.30M0.0%+34.3%0.012%Search for SEC Filing on Google Icon
2/18/2026Vident Advisory LLC13,099$1.05M0.0%-4.1%0.043%Search for SEC Filing on Google Icon
2/18/2026State of Tennessee Department of Treasury6,867$0.61M0.0%-41.8%0.022%Search for SEC Filing on Google Icon
2/18/2026NewEdge Advisors LLC2,406$0.19M0.0%+130.2%0.008%Search for SEC Filing on Google Icon
2/18/2026Empowered Funds LLC38,888$3.12M0.0%+706.8%0.127%Search for SEC Filing on Google Icon
2/18/2026XTX Topco Ltd6,771$0.54M0.0%N/A0.022%Search for SEC Filing on Google Icon
2/18/2026Zacks Investment Management88,080$7.08M0.1%+335.8%0.287%Search for SEC Filing on Google Icon
2/18/2026Voloridge Investment Management LLC220,713$17.73M0.1%+131.8%0.719%Search for SEC Filing on Google Icon
2/18/2026Susquehanna Portfolio Strategies LLC68,213$5.48M0.1%-4.0%0.222%Search for SEC Filing on Google Icon
2/18/2026Twinbeech Capital LP18,000$1.45M0.1%N/A0.059%Search for SEC Filing on Google Icon
2/18/2026Old West Investment Management LLC18,064$1.45M0.3%+11.0%0.059%Search for SEC Filing on Google Icon
2/18/2026Millennium Management LLC130,090$10.45M0.0%-50.3%0.424%Search for SEC Filing on Google Icon
2/18/2026Janus Henderson Group PLC41,776$3.36M0.0%-82.3%0.136%Search for SEC Filing on Google Icon
2/18/2026Gotham Asset Management LLC12,210$0.98M0.0%+10.8%0.040%Search for SEC Filing on Google Icon
2/18/2026Evolve Private Wealth LLC7,029$0.57M0.0%N/A0.023%Search for SEC Filing on Google Icon
2/18/2026Engineers Gate Manager LP11,167$0.90M0.0%+212.7%0.036%Search for SEC Filing on Google Icon
2/18/2026Balyasny Asset Management L.P.243,503$19.56M0.0%+10,368.7%0.793%Search for SEC Filing on Google Icon
2/18/2026Bridgeway Capital Management LLC36,000$2.89M0.1%+16.1%0.117%Search for SEC Filing on Google Icon
2/17/2026Freestone Grove Partners LP6,989$0.56M0.0%N/A0.023%Search for SEC Filing on Google Icon
2/17/2026Guggenheim Capital LLC7,704$0.62M0.0%-2.0%0.025%Search for SEC Filing on Google Icon
2/17/2026Schonfeld Strategic Advisors LLC21,182$1.70M0.0%-43.7%0.069%Search for SEC Filing on Google Icon
2/17/2026AQR Capital Management LLC37,581$3.02M0.0%+2.5%0.122%Search for SEC Filing on Google Icon
2/17/2026Abel Hall LLC2,629$0.21M0.0%N/A0.009%Search for SEC Filing on Google Icon
2/17/2026Cetera Investment Advisers9,955$0.80M0.0%+63.4%0.032%Search for SEC Filing on Google Icon
2/17/2026Amundi37,274$3M0.0%+9.6%0.121%Search for SEC Filing on Google Icon
2/17/2026Price T Rowe Associates Inc. MD383,056$30.78M0.0%-28.0%1.248%Search for SEC Filing on Google Icon
2/17/2026Soviero Asset Management LP46,000$3.70M1.8%+48.4%0.150%Search for SEC Filing on Google Icon
2/17/2026Osaic Holdings Inc.2,656$0.21M0.0%-12.7%0.009%Search for SEC Filing on Google Icon
2/17/2026Private Advisor Group LLC38,482$3.09M0.0%-16.2%0.125%Search for SEC Filing on Google Icon
2/17/2026Russell Investments Group Ltd.3,277$0.26M0.0%-22.7%0.011%Search for SEC Filing on Google Icon
2/17/2026Clark Capital Management Group Inc.110,294$8.86M0.1%+14.2%0.359%Search for SEC Filing on Google Icon
2/17/2026State of Wisconsin Investment Board50,506$4.06M0.0%+0.6%0.165%Search for SEC Filing on Google Icon
2/17/2026&PARTNERS13,953$1.12M0.0%-4.5%0.045%Search for SEC Filing on Google Icon
2/17/2026Royal Bank of Canada3,849$0.31M0.0%-97.7%0.013%Search for SEC Filing on Google Icon
2/17/2026Graham Capital Management L.P.3,114$0.25M0.0%-25.8%0.010%Search for SEC Filing on Google Icon
2/17/2026Needham Investment Management LLC20,000$1.61M0.1%N/A0.065%Search for SEC Filing on Google Icon
2/16/2026Squarepoint Ops LLC153,703$12.35M0.0%+17.1%0.501%Search for SEC Filing on Google Icon
2/16/2026Verition Fund Management LLC21,177$1.70M0.0%-40.8%0.069%Search for SEC Filing on Google Icon
2/16/2026MML Investors Services LLC8,490$0.68M0.0%+127.9%0.028%Search for SEC Filing on Google Icon
2/16/2026Kennedy Capital Management LLC205,737$16.53M0.3%+12.4%0.670%Search for SEC Filing on Google Icon
2/16/2026Barclays PLC75,982$6.10M0.0%+9.2%0.247%Search for SEC Filing on Google Icon
2/13/2026The Manufacturers Life Insurance Company 14,040$1.13M0.0%-8.2%0.046%Search for SEC Filing on Google Icon
2/13/2026CANADA LIFE ASSURANCE Co26,302$2.11M0.0%-20.3%0.086%Search for SEC Filing on Google Icon
2/13/2026Segall Bryant & Hamill LLC102,187$8.21M0.1%+74.3%0.333%Search for SEC Filing on Google Icon
2/13/2026Stifel Financial Corp24,347$1.96M0.0%+12.0%0.079%Search for SEC Filing on Google Icon
2/13/2026Smartleaf Asset Management LLC1,163$95K0.0%+21.5%0.004%Search for SEC Filing on Google Icon
2/13/2026Bridgefront Capital LLC17,765$1.43M0.4%+79.5%0.058%Search for SEC Filing on Google Icon
2/13/2026Public Sector Pension Investment Board129,777$10.43M0.0%+5.9%0.423%Search for SEC Filing on Google Icon
2/13/2026First Trust Advisors LP88,396$7.10M0.0%+60.0%0.288%Search for SEC Filing on Google Icon
2/13/2026Charles Schwab Investment Management Inc.431,195$34.64M0.0%+1.0%1.405%Search for SEC Filing on Google Icon
2/13/2026Police & Firemen s Retirement System of New Jersey8,210$0.66M0.0%-8.1%0.027%Search for SEC Filing on Google Icon
2/13/2026State Street Corp1,186,227$95.30M0.0%-3.6%3.864%Search for SEC Filing on Google Icon
2/13/2026Victory Capital Management Inc.1,807,404$145.21M0.1%+85.9%5.887%Search for SEC Filing on Google Icon
2/13/2026Boston Partners422,435$35.07M0.0%-9.9%1.376%Search for SEC Filing on Google Icon
2/13/2026Dynamic Technology Lab Private Ltd19,470$1.56M0.4%N/A0.063%Search for SEC Filing on Google Icon
2/13/2026UBS AM a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC61,097$4.91M0.0%-7.6%0.199%Search for SEC Filing on Google Icon
2/13/2026Wells Fargo & Company MN79,752$6.41M0.0%+9.2%0.260%Search for SEC Filing on Google Icon
2/12/2026Advisors Asset Management Inc.1,102$89K0.0%-21.5%0.004%Search for SEC Filing on Google Icon
2/12/2026Federation des caisses Desjardins du Quebec5,346$0.43M0.0%-4.7%0.017%Search for SEC Filing on Google Icon
2/12/2026HRT Financial LP4,576$0.37M0.0%-35.8%0.015%Search for SEC Filing on Google Icon
2/12/2026Brooklyn Investment Group5,543$0.45M0.0%N/A0.018%Search for SEC Filing on Google Icon
2/12/2026MetLife Investment Management LLC17,047$1.37M0.0%-9.0%0.056%Search for SEC Filing on Google Icon
2/12/2026Commonwealth Equity Services LLC2,898$0.23M0.0%+12.1%0.009%Search for SEC Filing on Google Icon
2/12/2026Renaissance Technologies LLC66,899$5.38M0.0%N/A0.218%Search for SEC Filing on Google Icon
2/12/2026Dimensional Fund Advisors LP841,040$67.57M0.0%+9.3%2.740%Search for SEC Filing on Google Icon
2/12/2026Federated Hermes Inc.276,266$22.20M0.0%+26.8%0.900%Search for SEC Filing on Google Icon
2/12/2026Ensign Peak Advisors Inc1,966$0.16M0.0%-68.6%0.006%Search for SEC Filing on Google Icon
2/12/2026Steward Partners Investment Advisory LLC602$48K0.0%-55.1%0.002%Search for SEC Filing on Google Icon
Data available starting January 2016

See Full Table
Axcelis Technologies logo
Axcelis Technologies, Inc. designs, manufactures, and services ion implantation and other processing equipment used in the fabrication of semiconductor chips in the United States, Europe, and Asia Pacific. The company offers high energy, high current, and medium current implanters for various application requirements. It also provides aftermarket lifecycle products and services, including used tools, spare parts, equipment upgrades, maintenance services, and customer training. It sells its equipment and services to semiconductor chip manufacturers through its direct sales force. The company was founded in 1978 and is headquartered in Beverly, Massachusetts.
Read More on Axcelis Technologies

Today's Range

Now: $139.99
Low: $136.98
High: $140.66

50 Day Range

MA: $100.79
Low: $78.79
High: $143.13

52 Week Range

Now: $139.99
Low: $50.46
High: $147.94

Volume

320,615 shs

Average Volume

684,323 shs

Market Capitalization

$4.30 billion

P/E Ratio

36.94

Dividend Yield

N/A

Beta

1.65

Who are the company insiders with the largest holdings of Axcelis Technologies?

Axcelis Technologies' top insider shareholders include:
  1. Mary G Puma (CEO)
  2. Mary G Puma (CEO)
  3. Mary G Puma (Insider)
  4. Russell Low (CEO)
  5. Lynnette C Fallon (VP)
  6. Kevin J Brewer (CFO)
  7. William J Bintz (EVP)
  8. Russell Low (EVP)
  9. Arthur L George Jr (Director)
  10. R John Fletcher (Director)
Learn More about top insider investors at Axcelis Technologies.

Who are the major institutional investors of Axcelis Technologies?

Axcelis Technologies' top institutional investors include:
  1. Boston Trust Walden Corp — 1.23%
  2. ARGA Investment Management LP — 0.13%
  3. Isthmus Partners LLC — 0.13%
  4. Janney Montgomery Scott LLC — 0.07%
  5. Burney Co. — 0.05%
  6. New York State Teachers Retirement System — 0.05%
Learn More about top institutional investors of Axcelis Technologies stock.

Which institutional investors are selling Axcelis Technologies stock?

In the previous quarter, ACLS stock was sold by these institutional investors:
  1. Boston Trust Walden Corp
  2. Private Advisor Group LLC
  3. SG Americas Securities LLC
  4. Burney Co.
  5. James Investment Research Inc.
  6. Penbrook Management LLC
  7. Isthmus Partners LLC
  8. Praxis Investment Management Inc.
Within the last year, company insiders that have sold Axcelis Technologies company stock include:
  1. Russell Low (CEO)
  2. John T Kurtzweil (Director)
  3. Gerald M Blumenstock (EVP)
  4. Jorge Titinger (Director)
Learn More investors selling Axcelis Technologies stock.

Which institutional investors are buying Axcelis Technologies stock?

During the previous quarter, ACLS stock was purchased by institutional investors including:
  1. ARGA Investment Management LP
  2. Louisiana State Employees Retirement System
  3. Wesbanco Bank Inc.
  4. Fifth Third Bancorp
  5. QRG Capital Management Inc.
  6. Eagle Bay Advisors LLC
  7. Evolve Private Wealth LLC
  8. Pictet Asset Management Holding SA

Axcelis Technologies Active Insiders

Mary G. Puma
Mary G. Puma (Age 68)
CEO
Kevin J Brewer
Kevin J Brewer (Age 66)
CFO
Jorge Titinger
Jorge Titinger
Director
2 recent trades
Joseph P. Keithley
Joseph P. Keithley
Director
Dennis Thomas St
Director
John T Kurtzweil
John T Kurtzweil
Director
Tzu Yin Chiu
Tzu Yin Chiu
Director
Douglas A. Lawson
Douglas A. Lawson (Age 65)
EVP
Russell Low
Russell Low (Age 55)
EVP
1 recent trades
William J Bintz
William J Bintz (Age 69)
EVP
Gerald M Blumenstock
Gerald M Blumenstock (Age 57)
EVP
1 recent trades
Lynnette C. Fallon
Lynnette C. Fallon (Age 66)
VP