Onto Innovation Inc.

Last updated September 27, 2026

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Organization details

Legal name: Onto Innovation Inc.
Former names: Nanometrics Inc
Ownership: Public
Status: Active
Sector (GICS): Information Technology
SIC code: 3829 — Measuring & Controlling Devices, NEC
Jurisdiction of incorporation: Delaware
Headquarters city: Wilmington
Headquarters state / province: Massachusetts
Headquarters country: United States
Fiscal year end: December
Ticker symbol: ONTO
Primary stock exchange: NYSE

Identifiers

SEC CIK: 0000704532
EIN: 94-2276314

Board of directors

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Christine A. Tsingos · Director
Since 2023
Christopher A. Seams · Director
Since 2023
David Brian Miller · Director
Since 2023
Karen M. Rogge · Director
Since 2023
Leo Berlinghieri · Director
Since 2023
May Su · Director
Since 2023
Michael P. Plisinski · Director · Chief Executive Officer
Since 2023
Stephen Douglas Kelley · Director
Since 2023
Stephen S. Schwartz · Director
Since 2024
Susan D. Lynch · Director Overboarded
Since 2024

Chief executives

Michael P. Plisinski · CEO

Dates unknown

Director election results

Annual meeting of May 20, 2026. Support is votes for as a share of votes for and against (or withheld). Below 80% is a clear protest.

Board connections

6 of this board's directors also sit on 13 other boards. 5 are in the same sector.

Shared director Other board Same sector

Advanced Energy Industries Inc. Same sector
via Stephen Douglas Kelley
Allegro MicroSystems Inc. Same sector
via Susan D. Lynch
Applied Aerospace & Defense Inc.
via Susan D. Lynch
Azenta Inc.
via Stephen S. Schwartz
Crane Company
via Susan D. Lynch
Crane NXT Co.
via Susan D. Lynch
Envista Holdings Corporation
via Christine A. Tsingos
Hadron Energy Inc.
via Karen M. Rogge
QT Imaging Holdings Inc.
via Karen M. Rogge
Rambus Inc. Same sector
via Karen M. Rogge
Spire Inc.
via Stephen S. Schwartz
Varex Imaging Corporation Same sector
via Christine A. Tsingos
Xperi Inc. Same sector
via Christopher A. Seams

Insider trades

All notable trades →

From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.

Bought, last 12 months: $0; 0 purchases by 0 insiders
Sold, last 12 months: $902,300; 2 sales by 2 insiders

Date	Insider	Transaction	Shares	Price	Value
Sep 29, 2026	David Brian Miller Director	Open-market sale	−2,000	$300.00	$600,000
Sep 2, 2026	Chen Shirley Officer (Senior Vice President of Custo)	Shares withheld for tax	−1,516	$254.55	$385,898
Sep 2, 2026	ROBERTS BRIAN K Officer (Chief Financial Officer)	Shares withheld for tax	−3,239	$254.55	$824,487
Aug 21, 2026	Susan D. Lynch Director	Open-market sale	−1,000	$302.30	$302,300
May 20, 2026	May Su Director	Grant or award	+761	—	—
May 20, 2026	Christopher A. Seams Director	Grant or award	+761	—	—
May 20, 2026	Stephen S. Schwartz Director	Grant or award	+761	—	—
May 20, 2026	David Brian Miller Director	Grant or award	+761	—	—
May 20, 2026	Susan D. Lynch Director	Grant or award	+761	—	—
May 20, 2026	Stephen Douglas Kelley Director	Grant or award	+761	—	—
May 15, 2026	YALDAEI RAMIL Officer (Chief Operating Officer)	Shares withheld for tax	−218	$271.77	$59,246
May 15, 2026	OH Yoon Ah Officer (SVP, Gen Counsel & Corp Sec)	Shares withheld for tax	−530	$271.77	$144,038
May 15, 2026	YALDAEI RAMIL Officer (Chief Operating Officer)	Shares withheld for tax	−625	$271.77	$169,856
Mar 3, 2026	Dolev Ido Officer (EVP, Prod Solutions Grp)	Shares withheld for tax	−819	$207.50	$169,943
Mar 3, 2026	YALDAEI RAMIL Officer (Chief Operating Officer)	Shares withheld for tax	−615	$207.50	$127,613

Peers

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Questions about Onto Innovation Inc.

Who is the CEO of Onto Innovation Inc.?

Michael P. Plisinski is Onto Innovation Inc.'s CEO.

How many directors are on Onto Innovation Inc.'s board?

Onto Innovation Inc.'s board has 10 directors: Christine A. Tsingos, Christopher A. Seams, David Brian Miller, Karen M. Rogge, Leo Berlinghieri, May Su, Michael P. Plisinski, Stephen Douglas Kelley, Stephen S. Schwartz and Susan D. Lynch.

Are Onto Innovation Inc. insiders buying or selling shares?

Over the last 12 months, Onto Innovation Inc. insiders made no open-market purchases and sold $902,300 of shares in 2 sales on the open market, as reported to the SEC on Forms 4 and 5.

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