Other Information.
−Removed: During the quarter ended September 30, 2025 , no director or officer adopted or terminated any contract, instrument or written plan for the purchase or sale of Axcelis securities intended to satisfy the affirmative defense conditions of Rule 10 b5-1(c) under the Exchange Act or any non-Rule 10 b5-1 trading arrangement as defined in Item 408(c) of Regulation S-K.
+Added: During the quarter ended March 31, 2026 , no director or officer adopted, modified or terminated any contract, instrument or written plan for the purchase or sale of Axcelis securities intended to satisfy the affirmative defense conditions of Rule 10 b5-1(c) under the Exchange Act or any non-Rule 10 b5-1 trading arrangement as defined in Item 408(c) of Regulation S-K.
The following exhibits are filed herewith:
−Removed: Agreement and Plan of Merger, dated as September 30, 2025, by and among Axcelis Technologies, Inc., Veeco Instruments Inc.
−Removed: and Victory Merger Sub, Inc.
−Removed: Incorporated by reference to Exhibit 2.1 of the Company’s Form 8-K filed with the Commission on October 1, 2025.
Restated Certificate of Incorporation of the Company filed November 2, 2017.
4 unchanged sentences
Incorporated by reference to Exhibit 3.2 of the Company’s Form 8-K filed with the Commision on May 11, 2022.
−Removed: Certification of the Principal Executive Officer under Exchange Act Rule 13a-14(a)/15d-14(a) (Section 302 of the Sarbanes-Oxley Act), dated November 6, 2025.
−Removed: Certification of the Principal Financial Officer under Exchange Act Rule 13a-14(a)/15d-14(a) (Section 302 of the Sarbanes-Oxley Act), dated November 6, 2025.
−Removed: Certification of the Principal Executive Officer pursuant to Section 1350 of Chapter 63 of title 18 of the United States Code (Section 906 of the Sarbanes-Oxley Act), dated November 6, 2025.
−Removed: Certification of the Principal Financial Officer pursuant to Section 1350 of Chapter 63 of title 18 of the United States Code (Section 906 of the Sarbanes-Oxley Act), dated November 6, 2025.
−Removed: The following materials from the Company’s Form 10-Q for the quarter ended September 30, 2025, formatted in inline eXtensible Business Reporting Language (iXBRL):
+Added: Certification of the Principal Executive Officer under Exchange Act Rule 13a-14(a)/15d-14(a) (Section 302 of the Sarbanes-Oxley Act), dated May 8, 2026.
+Added: Certification of the Principal Financial Officer under Exchange Act Rule 13a-14(a)/15d-14(a) (Section 302 of the Sarbanes-Oxley Act), dated May 8, 2026.
+Added: Certification of the Principal Executive Officer pursuant to Section 1350 of Chapter 63 of title 18 of the United States Code (Section 906 of the Sarbanes-Oxley Act), dated May 8, 2026.
+Added: Certification of the Principal Financial Officer pursuant to Section 1350 of Chapter 63 of title 18 of the United States Code (Section 906 of the Sarbanes-Oxley Act), dated May 8, 2026.
+Added: The following materials from the Company’s Form 10-Q for the quarter ended March 31, 2026, formatted in inline eXtensible Business Reporting Language (iXBRL):
(i) Consolidated Statements of Operations, (ii) Consolidated Statements of Comprehensive Income, (iii) Consolidated Balance Sheets, (iv) Consolidated Statements of Cash Flows and (v) Notes to Consolidated Financial Statements (Unaudited).
5 unchanged sentences
AXCELIS TECHNOLOGIES, INC.
−Removed: November 6, 2025
−Removed: Executive Vice President and Chief Financial Officer
+Added: /s/ DAVID RYZHIK
+Added: Senior Vice President and Interim Chief Financial Officer
Duly Authorized Officer and Principal Financial Officer
Compared sentence by sentence after normalising whitespace, quotation marks, case and digits, so re-formatting and restated figures do not read as changed language. Wording changes appear as one removal and one addition. The current filing and the prior one are authoritative.