#1 Represents securities surrendered to Veeco to satisfy tax withholding obligations due upon the vesting of restricted stock.

#2 On March 12, 2021, the reporting person was granted the contingent right to receive 19,500 performance-based restricted stock units ("PRSUs"). This contingent right was subject to the reporting person's continued service with the Company and the achievement of three-year performance criteria, which was based on the Company's total shareholder return relative to other companies in the Russell 2000 as specified in the award agreement (the "Criteria"). Each PRSU represented the contingent right to receive one share of Veeco common stock. The award, if earned, could range from 50% to 200% of the granted PRSUs based on the achievement of the Criteria. The common stock award reflected in this filing represents achievement at the 200% level, which was realized.

#1 Represents securities surrendered to Veeco to satisfy tax withholding obligations due upon the vesting of restricted stock.

#2 On March 12, 2021, the reporting person was granted the contingent right to receive 19,500 performance-based restricted stock units ("PRSUs"). This contingent right was subject to the reporting person's continued service with the Company and the achievement of three-year performance criteria, which was based on the Company's total shareholder return relative to other companies in the Russell 2000 as specified in the award agreement (the "Criteria"). Each PRSU represented the contingent right to receive one share of Veeco common stock. The award, if earned, could range from 50% to 200% of the granted PRSUs based on the achievement of the Criteria. The common stock award reflected in this filing represents achievement at the 200% level, which was realized.

#1 Represents securities surrendered to Veeco to satisfy tax withholding obligations due upon the vesting of restricted stock.

#2 On March 12, 2021, the reporting person was granted the contingent right to receive 19,500 performance-based restricted stock units ("PRSUs"). This contingent right was subject to the reporting person's continued service with the Company and the achievement of three-year performance criteria, which was based on the Company's total shareholder return relative to other companies in the Russell 2000 as specified in the award agreement (the "Criteria"). Each PRSU represented the contingent right to receive one share of Veeco common stock. The award, if earned, could range from 50% to 200% of the granted PRSUs based on the achievement of the Criteria. The common stock award reflected in this filing represents achievement at the 200% level, which was realized.

#1 Represents securities surrendered to Veeco to satisfy tax withholding obligations due upon the vesting of restricted stock.

#2 Reflects average weighted sales price. Actual sale prices ranged from $34.54 to $34.58 per share. The reporting person undertakes to provide, upon the request of the SEC staff, the issuer or any security holder of the issuer, full information regarding the number of shares sold at each separate price.

#3 These shares were acquired pursuant to a restricted stock award under the Veeco Instructions Inc. 2019 Stock Incentive Plan and are subject to certain restrictions. These restrictions will lapse with respect to one-third of such shares on each of the first, second and third anniversaries of the grant date, subject to the reporting person's continued service through such dates.