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ACLS Insider Trading

Insider Ownership Percentage: 0.49%
Insider Buying (Last 12 Months): $0.00
Insider Selling (Last 12 Months): $5,984,915.31

Axcelis Technologies Insider Trading History Chart

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

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Axcelis Technologies Share Price & Price History

Current Price: $105.31
Price Change: ▼ Price Decrease of -8.12 (-7.16%)
As of 09/14/2026 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
6/3/2026Necip SayinerDirectorSell1,586$157.44$249,699.847,112View SEC Filing Icon  
5/27/2026Todd SuttonVPSell2,000$159.99$319,980.006,360View SEC Filing Icon  
5/22/2026Eileen EvansEVPSell926$155.51$144,002.2631,295View SEC Filing Icon  
5/21/2026Gerald M BlumenstockEVPSell1,161$152.70$177,284.7020,493View SEC Filing Icon  
5/20/2026Christopher TatnallEVPSell1,166$149.75$174,608.5027,627View SEC Filing Icon  
5/19/2026Gregory B GravesDirectorSell3,225$141.61$456,692.255,473View SEC Filing Icon  
5/19/2026Jeanne QuirkDirectorSell1,789$140.22$250,853.5811,400View SEC Filing Icon  
5/19/2026John T. KurtzweilDirectorSell3,500$138.79$485,765.0032,990View SEC Filing Icon  
5/14/2026Gerald M BlumenstockEVPSell1,015$162.31$164,744.6517,293View SEC Filing Icon  
5/14/2026Todd SuttonVPSell2,574$163.89$421,852.867,817View SEC Filing Icon  
5/13/2026Greg RedinboEVPSell2,883$160.85$463,730.5529,823View SEC Filing Icon  
5/13/2026Jorge TitingerDirectorSell2,000$164.14$328,280.004,477View SEC Filing Icon  
5/12/2026Robert John MahoneyEVPSell2,258$161.00$363,538.0012,759View SEC Filing Icon  
5/6/2026Russell LowCEOSell7,468$156.75$1,170,609.00123,570View SEC Filing Icon  
5/1/2026Russell LowCEOSell1,244$138.86$172,741.84131,038View SEC Filing Icon  
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  
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
9/9/2026Sequoia Financial Advisors LLC1,937$0.37M0.0%N/A0.006%Search for SEC Filing on Google Icon
9/9/2026Tidal Investments LLC3,771$0.71M0.0%+45.9%0.012%Search for SEC Filing on Google Icon
9/9/2026WINTON GROUP Ltd8,620$1.63M0.1%-39.1%0.028%Search for SEC Filing on Google Icon
9/9/2026NewEdge Advisors LLC581$0.11M0.0%+247.9%0.002%Search for SEC Filing on Google Icon
9/9/2026GFG Capital LLC1,087$0.21M0.0%N/A0.004%Search for SEC Filing on Google Icon
9/8/2026Nykredit A S1,083$0.21M0.0%N/A0.004%Search for SEC Filing on Google Icon
9/4/2026Parkside Financial Bank & Trust827$0.16M0.0%-17.4%0.003%Search for SEC Filing on Google Icon
8/27/2026Corient Private Wealth LP7,792$1.48M0.0%+39.3%0.025%Search for SEC Filing on Google Icon
8/25/2026VIRGINIA RETIREMENT SYSTEMS ET Al12,638$2.39M0.0%N/A0.041%Search for SEC Filing on Google Icon
8/24/2026California State Teachers Retirement System6,715,434$1.27B0.0%+18,338.9%21.747%Search for SEC Filing on Google Icon
8/23/2026HB Wealth Management LLC1,124$0.21M0.0%N/A0.004%Search for SEC Filing on Google Icon
8/22/2026Odyssean LLC2,036$0.39M0.1%N/A0.007%Search for SEC Filing on Google Icon
8/22/2026Syon Capital LLC1,452$0.28M0.0%N/A0.005%Search for SEC Filing on Google Icon
8/21/2026Nykredit A S1,083$0.21M0.0%N/A0.004%Search for SEC Filing on Google Icon
8/21/2026B. Metzler seel. Sohn & Co. AG13,383$2.54M0.0%N/A0.043%Search for SEC Filing on Google Icon
8/20/2026Teza Capital Management LLC2,211$0.42M0.8%N/A0.007%Search for SEC Filing on Google Icon
8/20/2026BTG Pactual Asset Management US LLC1,173$0.22M0.0%N/A0.004%Search for SEC Filing on Google Icon
8/20/2026Greenleaf Trust1,804$0.34M0.0%N/A0.006%Search for SEC Filing on Google Icon
8/19/2026Wellington Management Group LLP68,987$13.07M0.0%N/A0.223%Search for SEC Filing on Google Icon
8/18/2026Public Employees Retirement System of Ohio431$82K0.0%N/A0.001%Search for SEC Filing on Google Icon
8/14/2026Ancora Advisors LLC500$95K0.0%N/A0.002%Search for SEC Filing on Google Icon
8/14/2026Paradigm Capital Management Inc. NY24,000$4.55M0.1%N/A0.078%Search for SEC Filing on Google Icon
8/13/2026Globeflex Capital L P39,162$7.42M0.9%N/A0.127%Search for SEC Filing on Google Icon
8/10/2026Great Lakes Advisors LLC31,556$5.98M0.0%N/A0.102%Search for SEC Filing on Google Icon
8/6/2026Bank of New York Mellon Corp204,964$38.83M0.0%N/A0.667%Search for SEC Filing on Google Icon
7/10/2026Handelsbanken Fonder AB9,300$1.76M0.0%+14.8%0.030%Search for SEC Filing on Google Icon
7/10/2026Perkins Coie Trust Co1,326$0.25M0.0%-51.8%0.004%Search for SEC Filing on Google Icon
7/9/2026Franklin Street Advisors Inc. NC1,130$0.21M0.0%N/A0.004%Search for SEC Filing on Google Icon
7/9/2026Tactive Advisors LLC2,080$0.39M0.1%N/A0.007%Search for SEC Filing on Google Icon
7/8/2026Reinhart Partners LLC.928,660$175.94M4.0%-44.0%3.022%Search for SEC Filing on Google Icon
7/7/2026Central Pacific Bank Trust Division3,765$0.71M0.1%N/A0.012%Search for SEC Filing on Google Icon
7/2/2026KERR FINANCIAL PLANNING Corp2,225$0.42M0.5%+3.5%0.007%Search for SEC Filing on Google Icon
6/18/2026Western Wealth Management LLC6,936$0.65M0.0%N/A0.023%Search for SEC Filing on Google Icon
6/3/2026Parallel Advisors LLC665$62K0.0%+22.0%0.002%Search for SEC Filing on Google Icon
5/22/2026Segall Bryant & Hamill LLC200,371$18.65M0.2%+96.1%0.652%Search for SEC Filing on Google Icon
5/19/2026Western Wealth Management LLC6,936$0.65M0.0%N/A0.023%Search for SEC Filing on Google Icon
5/19/2026Bank of America Corp DE110,999$10.33M0.0%-6.1%0.361%Search for SEC Filing on Google Icon
5/19/2026Edgestream Partners L.P.3,362$0.31M0.0%N/A0.011%Search for SEC Filing on Google Icon
5/19/2026Janus Henderson Group PLC14,628$1.36M0.0%-65.0%0.048%Search for SEC Filing on Google Icon
5/18/2026Amundi40,627$3.78M0.0%+9.0%0.132%Search for SEC Filing on Google Icon
5/18/2026California State Teachers Retirement System36,420$3.39M0.0%+21.3%0.119%Search for SEC Filing on Google Icon
5/18/2026Royal Bank of Canada9,793$0.91M0.0%+154.4%0.032%Search for SEC Filing on Google Icon
5/18/2026Empowered Funds LLC39,087$3.64M0.0%+0.5%0.127%Search for SEC Filing on Google Icon
5/16/2026The Manufacturers Life Insurance Company491,745$45.77M0.0%+3,402.5%1.600%Search for SEC Filing on Google Icon
5/16/2026Quantinno Capital Management LP12,336$1.15M0.0%+10.0%0.040%Search for SEC Filing on Google Icon
5/15/2026Entropy Technologies LP10,790$1M0.0%N/A0.035%Search for SEC Filing on Google Icon
5/14/2026Morningstar Investment Management LLC9,179$0.85M0.1%-8.5%0.030%Search for SEC Filing on Google Icon
5/14/2026Paradigm Capital Management Inc. NY24,000$2.23M0.1%-57.1%0.078%Search for SEC Filing on Google Icon
5/14/2026Sei Investments Co.45,035$4.19M0.0%+61.0%0.147%Search for SEC Filing on Google Icon
5/14/2026Lido Advisors LLC4,259$0.40M0.0%+17.9%0.014%Search for SEC Filing on Google Icon
5/14/2026Globeflex Capital L P44,455$4.14M0.6%-20.6%0.145%Search for SEC Filing on Google Icon
5/14/2026State of Wyoming393$37K0.0%-67.0%0.001%Search for SEC Filing on Google Icon
5/13/2026Cetera Investment Advisers5,127$0.48M0.0%-48.5%0.017%Search for SEC Filing on Google Icon
5/13/2026First Trust Advisors LP137,779$12.82M0.0%+55.9%0.448%Search for SEC Filing on Google Icon
5/12/2026ABN Amro Investment Solutions24,650$2.29M0.0%-0.6%0.080%Search for SEC Filing on Google Icon
5/8/2026PNC Financial Services Group Inc.2,168$0.20M0.0%-5.0%0.007%Search for SEC Filing on Google Icon
5/7/2026Dimensional Fund Advisors LP844,097$78.57M0.0%+0.4%2.747%Search for SEC Filing on Google Icon
5/7/2026Parallel Advisors LLC665$62K0.0%+22.0%0.002%Search for SEC Filing on Google Icon
5/6/2026Allspring Global Investments Holdings LLC258,536$24.69M0.0%-2.8%0.841%Search for SEC Filing on Google Icon
5/5/2026D.A. Davidson & CO.2,300$0.21M0.0%-12.8%0.007%Search for SEC Filing on Google Icon
5/5/2026Bank of New York Mellon Corp199,672$18.59M0.0%-1.9%0.650%Search for SEC Filing on Google Icon
5/5/2026Illinois Municipal Retirement Fund15,080$1.40M0.0%-3.1%0.049%Search for SEC Filing on Google Icon
5/4/2026Emerald Mutual Fund Advisers Trust47,412$4.41M0.2%N/A0.154%Search for SEC Filing on Google Icon
5/4/2026Emerald Advisers LLC96,238$8.96M0.3%N/A0.313%Search for SEC Filing on Google Icon
5/4/2026Empirical Financial Services LLC d.b.a. Empirical Wealth Management7,654$0.71M0.0%+36.5%0.025%Search for SEC Filing on Google Icon
5/4/2026Principal Financial Group Inc.210,202$19.57M0.0%+5.1%0.684%Search for SEC Filing on Google Icon
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
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: $105.31
Low: $104.95
High: $109.02

50 Day Range

MA: $128.95
Low: $105.31
High: $145.01

52 Week Range

Now: $105.31
Low: $73.60
High: $193.78

Volume

435,631 shs

Average Volume

297,152 shs

Market Capitalization

$3.25 billion

P/E Ratio

35.34

Dividend Yield

N/A

Beta

1.86

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. California State Teachers Retirement System — 21.75%
  2. Reinhart Partners LLC. — 3.02%
  3. Bank of New York Mellon Corp — 0.67%
  4. Wellington Management Group LLP — 0.22%
  5. Globeflex Capital L P — 0.13%
  6. Great Lakes Advisors LLC — 0.10%
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. Reinhart Partners LLC.
  2. WINTON GROUP Ltd
  3. Perkins Coie Trust Co
  4. Parkside Financial Bank & Trust
Within the last year, company insiders that have sold Axcelis Technologies company stock include:
  1. Russell Low (CEO)
  2. John T Kurtzweil (Director)
  3. Eileen Evans (EVP)
  4. Greg Redinbo (EVP)
  5. Christopher Tatnall (EVP)
  6. Gerald M Blumenstock (EVP)
  7. Robert John Mahoney (EVP)
  8. Jeanne Quirk (Director)
  9. Todd Sutton (VP)
  10. Jorge Titinger (Director)
  11. Necip Sayiner (Director)
  12. Gregory B Graves (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. California State Teachers Retirement System
  2. Bank of New York Mellon Corp
  3. Wellington Management Group LLP
  4. Globeflex Capital L P
  5. Great Lakes Advisors LLC
  6. Paradigm Capital Management Inc. NY
  7. B. Metzler seel. Sohn & Co. AG
  8. VIRGINIA RETIREMENT SYSTEMS ET Al

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
1 recent trades
Joseph P. Keithley
Joseph P. Keithley
Director
Dennis Thomas St
Director
John T Kurtzweil
John T Kurtzweil
Director
1 recent trades
Tzu Yin Chiu
Tzu Yin Chiu
Director
Gregory B Graves
Gregory B Graves
Director
1 recent trades
Jeanne Quirk
Jeanne Quirk
Director
1 recent trades
Douglas A. Lawson
Douglas A. Lawson (Age 65)
EVP
Russell Low
Russell Low (Age 55)
EVP
3 recent trades
William J Bintz
William J Bintz (Age 69)
EVP
Gerald M Blumenstock
Gerald M Blumenstock (Age 57)
EVP
2 recent trades
Greg Redinbo
Greg Redinbo (Age 61)
EVP
1 recent trades
Robert John Mahoney
Robert John Mahoney (Age 64)
EVP
1 recent trades
Christopher Tatnall
Christopher Tatnall
EVP
1 recent trades
Eileen Evans
Eileen Evans
EVP
1 recent trades
Lynnette C. Fallon
Lynnette C. Fallon (Age 66)
VP
Todd Sutton
VP
2 recent trades