Axcelis SVP Interim CFO reports tax share withholding

Axcelis Technologies SVP Interim CFO David Ryzhik reported two tax-withholding dispositions of common stock on July 15, 2026.

Accepted by SEC EDGAR 07/17/2026 - 05:05 PM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

Axcelis Technologies SVP Interim CFO David Ryzhik reported two tax-withholding dispositions of common stock on July 15, 2026. In total, 221 shares were forfeited at $145.01 per share to satisfy taxes due on the vesting of restricted stock units granted in July 2024. He continues to hold Axcelis shares and unvested restricted stock units that remain subject to forfeiture.

Insider Trade Summary

Tax Withholding: 221 shares

Tax Withholding 2 txns

Insider Ryzhik David

Role SVP Interim CFO

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock F2, F1, F3	127	$145.01	$18K
Tax Withholding	Common Stock F2, F1, F4	94	$145.01	$14K

Holdings After Transaction: Common Stock — 9,790 shares (Direct)

Footnotes (4)

1. F1. This forfeiture of shares for tax withholding purposes relates to the vesting on July 15, 2026 of service vesting restricted stock units granted to the executive in July 2024. The shares issued to the executive on the vesting were reduced by a number of shares having a value equal to the executive's tax withholding obligation with respect to the vested restricted stock units.
2. F2. Represents the closing price of the common stock on the date of the tax withholding.
3. F3. This amount includes 56 shares of common stock acquired by the reporting person on June 30, 2026 pursuant to the company's 2020 Employee Stock Purchase Plan, rounded to the nearest whole share. Of the shares held after this vesting event on July 15, 2026, 8,007 were issuable on vesting of restricted stock units granted to the reporting person under the 2012 Equity Incentive Plan and are subject to forfeiture.
4. F4. Of the shares held after this vesting event on July 15, 2026, 7,688 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

Tax withholding shares: 221 shares Tax withholding lot 1: 94 shares Tax withholding lot 2: 127 shares +4 more

7 metrics

Tax withholding shares 221 shares Total common shares forfeited for tax withholding on July 15, 2026

Tax withholding lot 1 94 shares Shares forfeited for taxes at $145.01 per share in one transaction

Tax withholding lot 2 127 shares Additional shares forfeited for taxes at $145.01 per share

Tax withholding valuation price $145.01 per share Closing price of Axcelis common stock on the tax withholding date

Unvested RSUs after vesting event 8,007 shares Shares issuable on vesting of RSUs under the 2012 Equity Incentive Plan, subject to forfeiture

Unvested RSUs after alternate vesting event 7,688 shares Shares issuable on vesting of RSUs under the 2012 Equity Incentive Plan, subject to forfeiture

ESPP shares acquired 56 shares Common shares acquired June 30, 2026 under the 2020 Employee Stock Purchase Plan

Key Terms

restricted stock units, tax withholding, 2012 Equity Incentive Plan, 2020 Employee Stock Purchase Plan

4 terms

restricted stock units financial

"vesting on July 15, 2026 of service vesting restricted stock units granted"

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.

tax withholding financial

"This forfeiture of shares for tax withholding purposes relates to the vesting"

Tax withholding is the practice of taking a portion of a payment—such as wages, dividends, or sale proceeds—before it reaches the recipient and sending that portion to the tax authority as an advance on the recipient’s eventual tax bill. For investors it matters because withholding reduces immediate cash received and affects after‑tax returns, estimated tax payments, and whether you may owe more or receive a refund when taxes are finally calculated, like having a small automatic savings set aside for your tax bill.

2012 Equity Incentive Plan financial

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

2020 Employee Stock Purchase Plan financial

"acquired by the reporting person on June 30, 2026 pursuant to the company's 2020 Employee Stock Purchase Plan"

FAQ

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

What insider transaction did Axcelis (ACLS) executive David Ryzhik report?

David Ryzhik, Axcelis Technologies’ SVP Interim CFO, reported two tax-withholding dispositions of common stock on July 15, 2026. Together they forfeited 221 shares at $145.01 per share to satisfy tax obligations from vesting restricted stock units granted in July 2024.

How many Axcelis (ACLS) shares were withheld for taxes in this report?

The transactions withheld a total of 221 Axcelis common shares for taxes. This consisted of one forfeiture of 94 shares and a second forfeiture of 127 shares, both recorded as tax-withholding dispositions rather than open-market sales.

What price was used to value the Axcelis (ACLS) tax-withholding shares?

Both tax-withholding dispositions used $145.01 per share, which footnotes state was the closing price of Axcelis common stock on July 15, 2026, the date of the tax withholding tied to the restricted stock unit vesting.

Are the reported Axcelis (ACLS) transactions open-market sales by David Ryzhik?

No. Footnotes explain the transactions are forfeitures of shares for tax withholding purposes, relating to the July 15, 2026 vesting of restricted stock units. They represent shares surrendered to cover taxes, not discretionary open-market sales by the executive.

What restricted stock unit exposure does David Ryzhik still have at Axcelis (ACLS)?

Footnotes state that, after these vesting events, 7,688 or 8,007 shares in each respective instance were issuable upon vesting of restricted stock units under the 2012 Equity Incentive Plan, and those units remain subject to forfeiture if vesting conditions are not met.

Did David Ryzhik acquire Axcelis (ACLS) shares through an employee stock purchase plan?

Yes. A footnote notes that his holdings after one vesting event included 56 shares of common stock acquired on June 30, 2026 under Axcelis’ 2020 Employee Stock Purchase Plan, rounded to the nearest whole share, in addition to shares tied to restricted stock units.

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

Form 4 Insider Transactions: What Each Field Means →

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google

Add on Google Not now

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^*

Ryzhik David

(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)
	SVP Interim CFO

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
07/15/2026

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	07/15/2026		F		127	D(1)	$145.01(2)	9,884(3)	D
Common Stock	07/15/2026		F		94	D(1)	$145.01(2)	9,790(4)	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. This forfeiture of shares for tax withholding purposes relates to the vesting on July 15, 2026 of service vesting restricted stock units granted to the executive in July 2024. The shares issued to the executive on the vesting were reduced by a number of shares having a value equal to the executive's tax withholding obligation with respect to the vested restricted stock units.

2. Represents the closing price of the common stock on the date of the tax withholding.

3. This amount includes 56 shares of common stock acquired by the reporting person on June 30, 2026 pursuant to the company's 2020 Employee Stock Purchase Plan, rounded to the nearest whole share. Of the shares held after this vesting event on July 15, 2026, 8,007 were issuable on vesting of restricted stock units granted to the reporting person under the 2012 Equity Incentive Plan and are subject to forfeiture.

4. Of the shares held after this vesting event on July 15, 2026, 7,688 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	07/17/2026
	** 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)