Axcelis Technologies (NASDAQ: ACLS) EVP sells 2,883 shares at $160.85

Filing Impact

(Moderate)

Filing Sentiment

(Negative)

Form Type

Rhea-AI Filing Summary

Axcelis Technologies EVP Greg Redinbo sold shares in an open-market transaction. On May 13, 2026, he sold 2,883 shares of common stock at $160.85 per share. After the sale, he held 29,823 shares, including 17,752 shares issuable upon vesting of restricted stock units that remain subject to forfeiture.

Insider Trade Summary

Net Seller: 2,883 shares ($463,731)

Net Sell 1 txn

Insider Redinbo Greg

Role EVP MARKETING AND APPLICATIONS

Sold 2,883 shs ($464K)

Type	Security	Shares	Price	Value
Sale	Common Stock	2,883	$160.85	$464K

Holdings After Transaction: Common Stock — 29,823 shares (Direct, null)

Footnotes (1)

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Key Figures

Shares sold: 2,883 shares Sale price: $160.85 per share Shares held after sale: 29,823 shares +2 more

5 metrics

Shares sold 2,883 shares Open-market sale on May 13, 2026

Sale price $160.85 per share Open-market transaction price

Shares held after sale 29,823 shares Post-transaction holdings

RSU-related shares 17,752 shares Issuable upon vesting of RSUs, subject to forfeiture

Performance RSU achievement 112.5% RSUs earned based on 2025 performance goals

Key Terms

open-market sale, restricted stock units, subject to forfeiture, Equity Incentive Plan, +1 more

5 terms

open-market sale financial

"transaction_action: open-market sale"

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

restricted stock units financial

"17,752 shares were issuable on vesting of restricted stock units"

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.

subject to forfeiture financial

"and are subject to forfeiture"

Equity Incentive Plan financial

"granted to the reporting person under the 2012 Equity Incentive Plan"

An equity incentive plan is a program that gives employees, executives or directors the right to receive company stock or options to buy stock as part of their pay. Think of it as offering slices of future company profit to motivate people to boost long‑term performance; for investors it matters because it can align employee goals with shareholder value but also increases the number of shares outstanding, which can dilute existing ownership.

performance goals financial

"based upon the achievement of 2025 performance goals"

Performance goals are specific, measurable targets a company sets for financial results, operational milestones, or individual roles—examples include revenue, profit, production levels, or completion of a project. They matter to investors because meeting or missing these targets influences management pay, future forecasts, deal-related payments and market confidence; think of them as a scoreboard that helps outsiders judge whether the business is performing as promised.

Form 4 Insider Transactions: What Each Field Means →

05/14/2026 - 05:05 PM

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^*

Redinbo Greg

(Last)

(First)

(Middle)

C/O AXCELIS TECHNOLOGIES, INC.

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)
	EVP MARKETING AND APPLICATIONS

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/13/2026

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	05/13/2026		S		2,883	D	$160.85	29,823⁽¹⁾	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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

Explanation of Responses:

1. Of the shares held after this sale on May 13, 2026, 17,752 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. This amount includes restricted stock units earned by the reporting person upon the achievement of 112.5% of the restricted stock units granted in 2025 based upon the achievement of 2025 performance goals.

	/s/ Eileen J. Evans, Attorney-in-Fact	05/14/2026
	** 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)

Source: View Original Filing on SEC EDGAR

FAQ

What insider transaction did Axcelis Technologies (ACLS) report for Greg Redinbo?

Axcelis Technologies reported that EVP Greg Redinbo sold 2,883 shares of common stock in an open-market transaction at $160.85 per share on May 13, 2026. This filing details his updated holdings following the sale.

How many Axcelis (ACLS) shares does Greg Redinbo hold after this Form 4 sale?

After the reported sale, Greg Redinbo held 29,823 shares of Axcelis common stock. This total includes shares underlying restricted stock units that are not yet fully vested and remain subject to forfeiture under the company’s equity plan.

What was the sale price in Greg Redinbo’s Axcelis (ACLS) open-market trade?

Greg Redinbo’s open-market sale was executed at $160.85 per share. The transaction involved 2,883 shares of Axcelis common stock, and the Form 4 records this price as the transaction price per share for the May 13, 2026 sale.

How many restricted stock units does Greg Redinbo have at Axcelis (ACLS)?

Of the shares reported as held after the sale, 17,752 shares are issuable upon vesting of restricted stock units. These units were granted under Axcelis’s 2012 Equity Incentive Plan and remain subject to forfeiture based on vesting conditions.

What performance-based RSUs are included in Greg Redinbo’s Axcelis (ACLS) holdings?

The 17,752 restricted stock units include awards earned after achieving 112.5% of units granted in 2025. This earning level was based on the achievement of Axcelis’s 2025 performance goals, as described in the Form 4 footnote.