EXHIBIT 10.11

FIRST AMENDMENT

TO THE

VEECO INSTRUMENTS INC.

2016 EMPLOYEE STOCK PURCHASE PLAN

This First Amendment to the Veeco Instruments Inc. 2016 Employee Stock Purchase Plan (the “Plan”) is made and adopted by Veeco Instruments Inc., a Delaware corporation (the “Company”), subject to approval by the stockholders of the Company.

W I T N E S S E T H:

WHEREAS, the Plan was adopted by the Board of Directors on February 5, 2016, and approved by the Company’s stockholders on May 5, 2016;

WHEREAS, Section 12(a) of the Plan provides that, subject to adjustment upon changes in capitalization of the Company as provided in Section 18 of the Plan, the maximum number of shares of Company common stock available for sale under the Plan is 750,000 shares;

WHEREAS, the Board believes it to be in the best interests of the Company and its stockholders to amend the Plan to increase the aggregate number of shares available for sale under the Plan; and

WHEREAS, the Board may amend the Plan at any time, provided stockholder approval is obtained with respect to any amendment to the extent such approval is required by Section 423 of the Internal Revenue Code of 1986, as amended.

NOW, THEREFORE, the Plan is hereby amended, subject to approval of the Company’s stockholders, as follows:

1. The first sentence of Section 12(a) of the Plan is hereby amended by deleting the present sentence in its entirety and substituting the following in lieu thereof:

“(a)  Subject to adjustment upon changes in capitalization of the Company as provided in Section 18, the maximum number of shares of Common Stock which will be made available for sale under the Plan is 1,500,000 shares.”

2. Except as hereby modified, the Plan shall remain in full force and effect.

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As approved by stockholders on May 3, 2019.