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Notice of Proposed Sale · 144

Teradyne, Inc.

TERNASDAQEQUITYCurrent

Notice of Proposed Sale

Filed Oct 1, 2026Accepted Oct 1, 2026, 11:51 AM EDTFiling CIK 1225110Accession 0001959173-26-007178
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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
TERADYNE, INC
Issuer CIK
0000097210
SEC file number
001-06462
Phone
978-370-2700
Person for whose account securities are to be sold
JOHNSON MERCEDES
Relationships to issuer
Director
Street
600 RIVERPARK DRIVE
City
NORTH READING
State / country code
MA
Postal code
01864

Securities proposed for sale

Securities proposed for sale · 1 reported row
SecurityProposed unitsAggregate market valueUnits outstandingApproximate sale dateExchangeBroker / market maker
Common16767,284.30156,340,75010/01/2026NASDAQFidelity Brokerage Services LLC

Broker / market maker — proposed row 1, entry 1

Name
Fidelity Brokerage Services LLC
Street
900 Salem Street
City
Smithfield
State / country code
RI
Postal code
02917

Acquisition of securities to be sold

Acquisition of securities to be sold · 1 reported row
SecurityAcquiredNature of acquisitionAcquired fromAmount acquiredGift transactionPayment dateNature of payment
Common05/10/2016Restricted Stock VestingIssuer167N05/10/2016Compensation

Sales reported in the preceding three months

Sales reported in the preceding three months · 3 reported rows
SellerSecuritySale dateAmount soldGross proceeds
Mercedes JohnsonCommon07/01/202616776,820.00
Mercedes JohnsonCommon08/03/202616659,452.90
Mercedes JohnsonCommon09/01/202616756,997.10

Seller — prior-sale row 1, entry 1

Name
Mercedes Johnson
Street
600 Riverpark Drive
City
North Reading
State / country code
MA
Postal code
01864

Seller — prior-sale row 2, entry 1

Name
Mercedes Johnson
Street
600 Riverpark Drive
City
North Reading
State / country code
MA
Postal code
01864

Seller — prior-sale row 3, entry 1

Name
Mercedes Johnson
Street
600 Riverpark Drive
City
North Reading
State / country code
MA
Postal code
01864

Prior-sale reporting

Nothing to report for the preceding three months
N

Notice signature

Notice date
10/01/2026
Signed
/s/ Margaret Campbell, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Mercedes Johnson
Plan adoption dates
03/04/2026

Company context

Teradyne (NASDAQ:TER) designs, develops, and manufactures automated test equipment and advanced robotics systems. Its test solutions for semiconductors and electronics products enable Teradyne's customers to consistently deliver on their quality standards. Its advanced robotics business includes collaborative robots and mobile robots that support manufacturing and warehouse operations for companies of all sizes. For more information, visit teradyne.com. Teradyne® is a registered trademark of Teradyne, Inc., in the U.S. and other countries.

Current securities

Recent company filings

  1. 144 filingSep 17, 2026
  2. 144 filingSep 15, 2026
  3. 144 filingSep 15, 2026
  4. 144 filingSep 1, 2026
  5. 144 filingAug 17, 2026

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