Axcelis Technologies Ownership

Who are the major shareholders and have insiders been buying or selling?

Recent Insider Transactions

NasdaqGS:ACLS Recent Insider Transactions by Companies or Individuals
Date	Value	Name	Entity	Shares	Max Price
03 Jun 26	SellUS$249,703	Necip Sayiner	Individual	1,586	US$157.44
02 Jun 26	SellUS$179,302	Robert Mahoney	Individual	1,155	US$155.24
27 May 26	SellUS$319,980	Todd Sutton	Individual	2,000	US$159.99
22 May 26	SellUS$143,998	Eileen Evans	Individual	926	US$155.51
22 May 26	SellUS$139,833	Thomas Dennis	Individual	900	US$155.37
21 May 26	SellUS$177,285	Gerald Blumenstock	Individual	1,161	US$152.70
20 May 26	SellUS$174,609	Christopher Tatnall	Individual	1,166	US$149.75
19 May 26	SellUS$485,771	John Kurtzweil	Individual	3,500	US$138.79
19 May 26	SellUS$456,697	Gregory Graves	Individual	3,225	US$142.51
19 May 26	SellUS$250,854	Jeanne Quirk	Individual	1,789	US$140.22
14 May 26	SellUS$421,865	Todd Sutton	Individual	2,574	US$163.89
14 May 26	SellUS$164,750	Gerald Blumenstock	Individual	1,015	US$162.32
13 May 26	SellUS$328,280	Jorge Titinger	Individual	2,000	US$164.14
13 May 26	SellUS$463,731	Gregory Redinbo	Individual	2,883	US$160.85
12 May 26	SellUS$363,538	Robert Mahoney	Individual	2,258	US$161.00
20 Feb 26	SellUS$80,000	Jorge Titinger	Individual	1,000	US$80.00
17 Dec 25	SellUS$172,100	Jorge Titinger	Individual	2,000	US$86.05
11 Dec 25	SellUS$271,422	Gerald Blumenstock	Individual	3,034	US$89.46

Insider Trading Volume

Insider Buying: ACLS insiders have only sold shares in the past 3 months.

Ownership Breakdown

What is the ownership structure of ACLS?
Owner Type	Number of Shares	Ownership Percentage
State or Government	6,867	0.0206%
Individual Insiders	195,142	0.586%
Institutions	33,094,831	99.4%

Dilution of Shares: Shareholders have not been meaningfully diluted in the past year.

Top Shareholders

Top 25 shareholders own 85.94% of the company

Ownership	Name	Shares	Current Value	Change %	Portfolio %
16.3%	BlackRock, Inc.	5,029,462	US$704.9m	1.88%	0.01%
13.3%	FMR LLC	4,119,637	US$577.4m	69.9%	0.02%
8.03%	Vanguard Portfolio Management, LLC	2,478,878	US$347.4m	-0.38%	0.02%
5.2%	Vanguard Capital Management, LLC	1,607,327	US$225.3m	1.52%	no data
4.42%	Balyasny Asset Management L.P.	1,364,540	US$191.2m	460%	0.37%
3.99%	State Street Investment Management	1,231,109	US$172.5m	3.54%	no data
3.67%	Victory Capital Management Inc.	1,134,007	US$158.9m	-11.3%	0.08%
3.01%	Reinhart Partners, LLC	928,660	US$130.2m	-44%	2.99%
2.7%	Geode Capital Management, LLC	833,607	US$116.8m	2.75%	0.01%
2.6%	BNPP Asset Management Holding	803,151	US$112.6m	-20.2%	0.11%
2.48%	Amundi Us, Inc.	764,438	US$107.1m	0%	0.35%
2.3%	Dimensional Fund Advisors LP	709,266	US$99.4m	-16%	0.01%
2.13%	PRIMECAP Management Company	658,652	US$92.3m	-0.95%	0.05%
1.78%	Emerald Advisers, LLC	549,912	US$77.1m	283%	1.18%
1.76%	D. E. Shaw & Co., L.P.	544,421	US$76.3m	15.8%	0.06%
1.59%	Manulife Asset Management	491,745	US$68.9m	3,400%	0.04%
1.44%	Charles Schwab Investment Management, Inc.	445,773	US$62.5m	0%	0.01%
1.27%	Barrow, Hanley, Mewhinney & Strauss, LLC	392,240	US$55.0m	688,000%	0.14%
1.25%	UBS Asset Management AG	386,960	US$54.2m	-12.4%	no data
1.24%	Northern Trust Global Investments	382,027	US$53.5m	-8.32%	0.01%
1.2%	American Century Investment Management Inc	369,879	US$51.8m	-61.1%	0.02%
1.17%	T. Rowe Price Group, Inc.	362,202	US$50.8m	-5.44%	no data
1.16%	Boston Trust Walden National Association	359,256	US$50.3m	-5.09%	0.37%
0.98%	Boston Partners Global Investors, Inc.	303,929	US$42.6m	-10.7%	0.02%
0.94%	The Goldman Sachs Group, Inc.	289,114	US$40.5m	0%	0.01%

Company Analysis and Financial Data Status

Data	Last Updated (UTC time)
Company Analysis	2026/08/17 12:53
End of Day Share Price	2026/08/14 00:00
Earnings	2026/06/30
Annual Earnings	2025/12/31

Data Sources

The data used in our company analysis is from S&P Global Market Intelligence LLC. The following data is used in our analysis model to generate this report. Data is normalised which can introduce a delay from the source being available.

Package	Data	Timeframe	Example US Source ^*
Company Financials	10 years	Income statement Cash flow statement Balance sheet	SEC Form 10-K SEC Form 10-Q
Analyst Consensus Estimates	+3 years	Forecast financials Analyst price targets	Analyst Research Reports Blue Matrix
Market Prices	30 years	Stock prices Dividends, Splits and Actions	ICE Market Data SEC Form S-1
Ownership	10 years	Top shareholders Insider trading	SEC Form 4 SEC Form 13D
Management	10 years	Leadership team Board of directors	SEC Form 10-K SEC Form DEF 14A
Key Developments	10 years	Company announcements	SEC Form 8-K

^* Example for US securities, for non-US equivalent regulatory forms and sources are used.

Unless specified all financial data is based on a yearly period but updated quarterly. This is known as Trailing Twelve Month (TTM) or Last Twelve Month (LTM) Data. Learn more.

Analysis Model and Snowflake

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Learn about the world class team who designed and built the Simply Wall St analysis model.

Industry and Sector Metrics

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Analyst Sources

Axcelis Technologies, Inc. is covered by 8 analysts. 5 of those analysts submitted the estimates of revenue or earnings used as inputs to our report. Analysts submissions are updated throughout the day.

Analyst	Institution
Christopher Muse	Barclays
Duksan Jang	BofA Global Research
Craig Ellis	B. Riley Securities, Inc.