Vanguard Lists 5.26% Holding in Axcelis Technologies (NASDAQ: ACLS)

Rhea-AI Filing Summary

Axcelis Technologies Inc reported that Vanguard Capital Management beneficially owns 1,617,321 shares of common stock, representing 5.26% of the class. The filing shows Vanguard has sole dispositive power over 1,617,321 shares and sole voting power for 234,551 shares. The disclosure is signed by the Head of Global Fund Administration and filed on 04/29/2026.

Insights

Institutional Ownership Analyst

Vanguard holds a disclosed 5.26% stake in Axcelis with full dispositive authority.

Vanguard Capital Management reports beneficial ownership of 1,617,321 shares and sole power to dispose of those shares. This indicates voting and sale decisions for that block rest with Vanguard or its managed accounts.

Reported voting power of 234,551 shares suggests some voting authority is exercised directly; subsequent filings would show if this stake changes.

Corporate Governance Specialist

Schedule 13G filing signals passive institutional ownership disclosure rather than an active activist intent.

The filing structure and the use of Schedule 13G typically reflect passive investment reporting; the form does not allege plans to influence management. The cover data lists affiliated Vanguard entities and dividend/proceeds control language.

Watch for any future Form 13D or changes in voting/dispositive statements if the position or intent shifts.

Key Figures

Beneficial ownership: 1,617,321 shares Percent of class: 5.26% Sole voting power: 234,551 shares +1 more

4 metrics

Beneficial ownership 1,617,321 shares reported on Schedule 13G

Percent of class 5.26% percent of Axcelis common stock

Sole voting power 234,551 shares shares with sole power to vote

Filing signature date 04/29/2026 signature by Head of Global Fund Administration

Key Terms

Schedule 13G, Sole Dispositive Power, Beneficial Owner, Investment Company Act

4 terms

Schedule 13G regulatory

"reported on Schedule 13G as beneficial ownership disclosure"

A Schedule 13G is a formal document that investors file with the government when they acquire a large ownership stake in a company, usually for investment purposes rather than control. It helps keep the public informed about who owns significant parts of a company's shares, which can influence how the company is managed and how investors make decisions. Filing this schedule is important for transparency and understanding the ownership landscape of publicly traded companies.

Sole Dispositive Power financial

"sole power to dispose or to direct the disposition of: 1617321"

Sole dispositive power is the exclusive legal authority to decide what happens to a security — for example, whether to sell, transfer, or retain shares — without needing anyone else’s permission. Investors care because it signals who truly controls the economic outcome of an investment: like holding the only key to a safe, the holder can realize gains or losses and may trigger regulatory reporting, insider rules, or influence over corporate ownership.

Beneficial Owner regulatory

"reflects the securities beneficially owned, or deemed to be beneficially owned"

A beneficial owner is the person who ultimately owns or controls a financial asset or property, even if their name isn't directly on official documents. Think of it like someone who secretly holds the keys to a safe deposit box—others may appear to have access, but the true owner is the one who benefits from what's inside. Identifying beneficial owners helps ensure transparency and prevent illegal activities like money laundering or fraud.

Investment Company Act regulatory

"investment companies registered under the Investment Company Act of 1940"

The Investment Company Act is a law that sets rules for businesses whose main activity is managing and selling pooled money, such as mutual funds and other investment funds. It matters to investors because it requires clear reporting, limits managers from putting their own interests ahead of clients, and mandates safekeeping and oversight of assets—similar to safety inspections and traffic rules that help keep shared vehicles reliable and trustworthy.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

Axcelis Technologies Inc

(Name of Issuer)

Common Stock

(Title of Class of Securities)

054540208

(CUSIP Number)

03/31/2026

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

schemaVersion:

SCHEDULE 13G

CUSIP Number(s): 054540208

1

Names of Reporting Persons

Vanguard Capital Management

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

PENNSYLVANIA

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 234,551.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 1,617,321.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

1,617,321.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

5.26 %

12

Type of Reporting Person (See Instructions)

IA

Comment for Type of Reporting Person: In accordance with SEC Release No. 34-39538 (January 12, 1998), this Schedule 13G reflects the securities beneficially owned, or deemed to be beneficially owned, by Vanguard Capital Management LLC and the following affiliates of Vanguard Capital Management LLC or business divisions of such affiliates: Vanguard Asset Management Limited, Vanguard Fiduciary Trust Company, Vanguard Global Advisers, LLC and Vanguard Investments Australia Ltd. This Schedule 13G includes securities held by Vanguard funds, or sleeves thereof, over which Vanguard Capital Management LLC exercises dispositive power, in addition to securities held by clients over which the affiliates or business divisions of such affiliates indicated above exercise dispositive and/or voting power. This Schedule 13G does not include securities, if any, beneficially owned by other subsidiaries or affiliates of Vanguard Capital Management LLC, or business divisions of such subsidiaries, whose ownership of securities is disaggregated from that of the reporting business unit in accordance with such release.

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Axcelis Technologies Inc
(b)	Address of issuer's principal executive offices: 108 Cherry Hill Drive, Beverly, MA, 01915
Item 2.
(a)	Name of person filing: Vanguard Capital Management
(b)	Address or principal business office or, if none, residence: 100 Vanguard Blvd,, Malvern, PA, 19355
(c)	Citizenship: PA
(d)	Title of class of securities: Common Stock
(e)	CUSIP Number(s): 054540208
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: 1617321
(b)	Percent of class: 5.26 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 234551
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 1617321
	(iv) Shared power to dispose or to direct the disposition of: 0
Item 5.	Ownership of 5 Percent or Less of a Class.
	Not Applicable
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	If any other person is known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, such securities, a statement to that effect should be included in response to this item and, if such interest relates to more than 5 percent of the class, such person should be identified. A listing of the shareholders of an investment company registered under the Investment Company Act of 1940 or the beneficiaries of employee benefit plan, pension fund or endowment fund is not required. Vanguard Capital Management, including investment companies registered under the Investment Company Act of 1940 and other managed accounts, have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, the securities reported herein.No one other person's interest in the securities reported herein is more than 5%.
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	Not Applicable
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Vanguard Capital Management

Signature:	Ashley Grim
Name/Title:	Head of Global Fund Administration
Date:	04/29/2026

FAQ

What stake does Vanguard Capital Management report in Axcelis (ACLS)?

Vanguard reports beneficial ownership of 1,617,321 shares, representing 5.26% of Axcelis common stock. The filing states Vanguard has sole dispositive power over those shares and sole voting power over 234,551 shares.

Does the Schedule 13G filing indicate Vanguard will try to influence Axcelis?

No, the Schedule 13G filing indicates passive beneficial ownership rather than an active control claim. The form lists managed accounts and affiliated entities and does not state any plan to influence management.

Who signed the Axcelis ownership disclosure for Vanguard?

The filing is signed by Ashley Grim, Head of Global Fund Administration. The signature block shows the filing date as 04/29/2026, certifying the reported ownership details.

What voting and dispositive powers does Vanguard report for ACLS shares?

Vanguard reports sole voting power for 234,551 shares and sole dispositive power for 1,617,321 shares. Shared voting and dispositive powers are reported as zero.

Are other Vanguard entities listed in the Schedule 13G for Axcelis?

Yes, the filing lists affiliated divisions such as Vanguard Asset Management Limited, Vanguard Global Advisers, LLC, and others as part of the beneficial ownership structure reported by Vanguard Capital Management.