Form DEFA14A ONTO INNOVATION INC.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A

PROXY STATEMENT PURSUANT TO SECTION 14(a) OF

THE SECURITIES EXCHANGE ACT OF 1934

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Filed by a Party other than the Registrant 

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 Preliminary Proxy Statement

 Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))

 Definitive Proxy Statement

 Definitive Additional Materials

 Soliciting Material Pursuant to Rule 14a-12

Onto Innovation Inc.

(Name of Registrant as specified in its charter)

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3ems to be voted appear on reverse side)