Axcelis VP sells 2,574 company shares

Axcelis Technologies VP Corporate Controller Todd Sutton reported an open-market sale of 2,574 shares of common stock at a weighted-average price of $163.8946 per share, in multiple trades between $163.8067 and $164.1301.

Rhea-AI Filing Summary

Axcelis Technologies VP Corporate Controller Todd Sutton reported an open-market sale of 2,574 shares of common stock at a weighted-average price of $163.8946 per share, in multiple trades between $163.8067 and $164.1301. After this May 14, 2026 sale, he holds 7,817 shares directly, including 5,538 shares issuable upon vesting of restricted stock units granted under the 2012 Equity Incentive Plan that remain subject to forfeiture.

Insider Trade Summary

Net Seller: 2,574 shares

Net Sell 1 txn

Insider Sutton Todd

Role VP Corporate Controller

Sold 2,574 shs ($422K)

Type	Security	Shares	Price	Value
Sale	Common Stock	2,574	$163.8946	$422K

Holdings After Transaction: Common Stock — 7,817 shares (Direct)

Footnotes (2)

1. F1. The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $163.8067 to $164.1301, inclusive. The reporting person undertakes to provide to the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.
2. F2. Of the shares held after this sale on May 14, 2026, 5,538 shares were issuable on vesting of restricted stock units granted to the reporting person under the 2012 Equity Incentive Plan and are subject to forfeiture.

Key Figures

Shares sold: 2,574 shares Weighted-average sale price: $163.8946 per share Post-transaction holdings: 7,817 shares +2 more

5 metrics

Shares sold 2,574 shares Open-market sale of common stock on May 14, 2026

Weighted-average sale price $163.8946 per share Average across multiple trades

Post-transaction holdings 7,817 shares Total direct holdings after the sale

RSU-related shares 5,538 shares Issuable upon vesting under 2012 Equity Incentive Plan, subject to forfeiture

Price range of trades $163.8067–$164.1301 per share Range of individual sale transactions

Key Terms

weighted-average price, restricted stock units, 2012 Equity Incentive Plan, subject to forfeiture

4 terms

weighted-average price financial

"The price reported in Column 4 is a weighted-average price."

Weighted-average price is the average of multiple prices where each price is counted according to its size or importance—larger trades carry more weight than smaller ones, like averaging course grades by credit hours. It matters to investors because it gives a more realistic picture of the true price paid or received, helping assess trade execution, compare performance, calculate cost basis, and value positions more accurately than a simple average.

restricted stock units financial

"5,538 shares were issuable on vesting of restricted stock units granted to the reporting person"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

2012 Equity Incentive Plan financial

"restricted stock units granted to the reporting person under the 2012 Equity Incentive Plan"

subject to forfeiture financial

"shares were issuable on vesting of restricted stock units ... and are subject to forfeiture"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did Axcelis (ACLS) report for Todd Sutton?

Axcelis reported that VP Corporate Controller Todd Sutton sold 2,574 shares of common stock in an open-market transaction. The sale used a weighted-average price based on multiple trades executed on May 14, 2026.

At what price did Todd Sutton sell Axcelis (ACLS) shares?

Todd Sutton sold 2,574 Axcelis shares at a weighted-average price of $163.8946. Individual trades occurred in a price range from $163.8067 to $164.1301 during the same trading day.

How many Axcelis (ACLS) shares does Todd Sutton hold after the sale?

After the May 14, 2026 sale, Todd Sutton holds 7,817 Axcelis common shares directly. This total includes shares underlying restricted stock units that will only be issued if vesting conditions are met.

How many Axcelis (ACLS) RSU-based shares does Todd Sutton have?

Of the 7,817 shares shown after the sale, 5,538 are issuable on vesting of restricted stock units. These awards were granted under the 2012 Equity Incentive Plan and remain subject to forfeiture until vesting.

What does the weighted-average price mean in this Axcelis (ACLS) Form 4?

The weighted-average price of $163.8946 reflects multiple trades executed between $163.8067 and $164.1301. The Form 4 notes that detailed trade-by-trade pricing information is available from the reporting person upon request by regulators.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 05/15/2026 - 05:05 PM EDT Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Sutton Todd

(Last) (First) (Middle)

108 CHERRY HILL DRIVE

(Street)

BEVERLY MASSACHUSETTS 01915

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
AXCELIS TECHNOLOGIES INC [ ACLS ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	VP Corporate Controller

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/14/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	05/14/2026		S		2,574	D	$163.8946(1)	7,817(2)	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $163.8067 to $164.1301, inclusive. The reporting person undertakes to provide to the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.

2. Of the shares held after this sale on May 14, 2026, 5,538 shares were issuable on vesting of restricted stock units granted to the reporting person under the 2012 Equity Incentive Plan and are subject to forfeiture.

	/s/ Eileen J. Evans, Attorney-in-Fact	05/15/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)