AXCELIS TECHNOLOGIES INC

We are primarily a producer of ion implantation equipment used in the fabrication of semiconductor chips in the United States, Europe, and Asia. In addition, we provide extensive worldwide aftermarket service and support, including spare parts, equipment upgrades and maintenance services to the semiconductor industry. Our product development and manufacturing activities currently occur primarily in the United States and South Korea. Our equipment and service products are highly technical and are sold through a direct sales force in the United States, Europe, and Asia. Consolidation and partnering within the semiconductor manufacturing industry has resulted in a small number of customers representing a substantial portion of our business. Our ten largest customers accounted for 72.9% of total revenue for the three months ended March 31, 2026.

Sales of our systems in the first three months of 2026 were down compared to the same period in the prior year, as customers have moderated the pace of investments into mature process node technologies. During the three months ended March 31, 2026, the overall mature process segment represented 68% of our shipped systems revenue, with the remainder represented by 32% of shipments to dynamic random-access memory (“DRAM”) applications. Of the mature process segment, power device shipments comprised 35% of total systems revenue with the general mature segment representing 33%, which includes image sensor applications.

On September 30, 2025, the Company, Victory Merger Sub, Inc., a Delaware corporation and a wholly-owned subsidiary of the Company (“Merger Sub”), and Veeco Instruments Inc., a Delaware corporation (“Veeco”), entered into an Agreement and Plan of Merger (the “Merger Agreement”). Pursuant to the Merger Agreement, and subject to the satisfaction or waiver of the conditions specified therein, Merger Sub shall be merged with and into Veeco (the “Merger”), with Veeco surviving as a wholly-owned subsidiary of the Company. For further information regarding the Merger, see Note 19 to the consolidated financial statements included in this report. On February 6, 2026, Axcelis held a special meeting of stockholders at which the Company Stock Issuance was approved. The completion of the Merger remains subject to other customary closing conditions, including the final pending regulatory approval from the State Administration for Market Regulation of the People’s Republic of China. Axcelis and Veeco continue to expect that the Merger will be completed in the second half of 2026.