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Notice of Proposed Sale · 144

Onto Innovation Inc.

ONTONYSEEQUITYCurrent

Notice of Proposed Sale

Filed Sep 29, 2026Accepted Sep 29, 2026, 4:22 PM EDTFiling CIK 1233488Accession 0001950047-26-009856
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Structured filing — 144

primary_doc.xml

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Notice of proposed sale. The proposed amounts below do not establish that a sale occurred.

Proposed-sale notice

Issuer
ONTO INNOVATION INC.
Issuer CIK
0000704532
SEC file number
001-39110
Phone
(978) 253-6200
Person for whose account securities are to be sold
DAVID B MILLER
Relationships to issuer
Director
Street
16 Jonspin Road
City
Wilmington
State / country code
MA
Postal code
01887

Securities proposed for sale

Securities proposed for sale · 1 reported row
SecurityProposed unitsAggregate market valueUnits outstandingApproximate sale dateExchangeBroker / market maker
Common2,000600,000.0049,074,24709/29/2026NYSEMorgan Stanley Smith Barney LLC Executive Financial Services

Broker / market maker — proposed row 1, entry 1

Name
Morgan Stanley Smith Barney LLC Executive Financial Services
Street
1 New York Plaza
Street (continued)
8th Floor
City
New York
State / country code
NY
Postal code
10004

Acquisition of securities to be sold

Acquisition of securities to be sold · 1 reported row
SecurityAcquiredNature of acquisitionAcquired fromAmount acquiredGift transactionPayment dateNature of payment
Common05/21/2026Restricted StockIssuer2,000N05/21/2026Not Applicable

Prior-sale reporting

Nothing to report for the preceding three months
Y

Notice signature

Notice date
09/29/2026
Signed
/s/ David Brian Miller
Plan adoption dates
06/11/2026

Company context

Onto Innovation is a leader in process control, combining global scale with an expanded portfolio of leading-edge technologies that include: un-patterned wafer quality; 3D metrology spanning chip features from nanometer scale transistors to large die interconnects; macro defect inspection of wafers and packages; metal interconnect composition; factory analytics; and lithography for advanced semiconductor packaging.

Current securities

Recent company filings

  1. 144 filingAug 21, 2026
  2. Completion of Acquisition or Disposition of Assets · Regulation FD DisclosureAug 10, 2026
  3. 10-Q filingAug 6, 2026
  4. Results of Operations and Financial ConditionAug 6, 2026
  5. SD filingMay 27, 2026

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