TER / Teradyne, Inc. - Документы SEC, Годовой отчет, Доверенное заявление

Терадин, Инк.
US ˙ NasdaqGS ˙ US8807701029

Основная статистика
LEI C3X4YJ278QNZHRJULN75
CIK 97210
SEC Filings
All companies that sell securities in the United States must register with the Securities and Exchange Commission (SEC) and file reports on a regular basis. These reports include company annual reports (10K, 10Q), news updates (8K), investor presentations (found in 8Ks), insider trades (form 4), ownership reports (13D, and 13G), and reports related to the specific securities sold, such as registration statements and prospectus. This page shows recent SEC filings related to Teradyne, Inc.
SEC Filings (Chronological Order)
На этой странице представлен полный хронологический список документов SEC, за исключением документов о собственности, которые мы предоставляем в других местах.
September 2, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): August 29, 2025 TERADYNE, INC. (E

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): August 29, 2025 TERADYNE, INC. (Exact Name of Registrant as Specified in Charter) Massachusetts 001-06462 04-2272148 (State or Other Jurisdiction of Incorporation) (Commission File Nu

August 1, 2025 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 29, 2025 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 001-06462 TERADYNE, INC.

July 30, 2025 EX-99.1

Quarter Ended

Exhibit 99.1 Teradyne Reports Second Quarter 2025 Results • Revenue and earnings above mid-point of Q2 guidance ranges • Semiconductor Test drove better than expected results in Q2 • Strength in Compute expected to drive stronger second half results Q2'25 Q2'24 Q1'25 Revenue (mil) $ 652 $ 730 $ 686 GAAP EPS $ 0.49 $ 1.14 $ 0.61 Non-GAAP EPS $ 0.57 $ 0.86 $ 0.75 NORTH READING, Mass. – July 29, 2025

July 30, 2025 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): July 29, 2025 TERADYNE, INC. (Exact Name of Registrant as Specified in Charter) Massachusetts 001-06462 04-2272148 (State or Other Jurisdiction of Incorporation) (Commission File Numb

June 26, 2025 EX-99.1

Teradyne Announces Election of Two New Independent Directors Technology and semiconductor industry veterans Drew Henry and Dr. Necip Sayiner to join Board

Exhibit 99.1 Teradyne Announces Election of Two New Independent Directors Technology and semiconductor industry veterans Drew Henry and Dr. Necip Sayiner to join Board NORTH READING, MA - June 26, 2025 - Teradyne, Inc. (NASDAQ:TER) announced the election of two new independent directors to its Board of Directors (the “Board”). Drew Henry, Executive Vice President of Strategy & Ecosystem at Arm Hol

June 26, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): June 26, 2025 TERADYNE, INC. (Exa

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): June 26, 2025 TERADYNE, INC. (Exact Name of Registrant as Specified in Charter) Massachusetts 001-06462 04-2272148 (State or Other Jurisdiction of Incorporation) (Commission File Numb

June 20, 2025 EX-3.1

Amended and Restated By-Laws of Teradyne, Inc., effective as of June 20, 2025

Exhibit 3.1 **************** AMENDED AND RESTATED BY-LAWS OF TERADYNE, INC. (Amended and Restated as of June 20, 2025) **************** ARTICLE I Name, Location, Seal and Fiscal Year 1. Name. The name of the corporation is Teradyne, Inc. 2. Location. The corporation may have an office and transact business in Boston, Massachusetts, and at such other place or places as the Board of Directors or sto

June 20, 2025 8-K

Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (date of earliest event reported): June 20, 2025 TERADYNE, INC. (Exact Name of Registrant as Specified in Charter) Massachusetts 001-06462 04-2272148 (State or Other Jurisdiction of Incorporation) (Commission File No.)

May 12, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): May 9, 2025 TERADYNE, INC. (Exact

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): May 9, 2025 TERADYNE, INC. (Exact Name of Registrant as Specified in Charter) Massachusetts 001-06462 04-2272148 (State or Other Jurisdiction of Incorporation) (Commission File Number

May 12, 2025 8-K/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K/A (Amendment No. 1) CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): May 9, 2025 T

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K/A (Amendment No. 1) CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): May 9, 2025 TERADYNE, INC. (Exact Name of Registrant as Specified in Charter) Massachusetts 001-06462 04-2272148 (State or Other Jurisdiction of Incorporation) (Co

May 2, 2025 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 30, 2025 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 001-06462 TERADYNE, INC

April 30, 2025 EX-1.01

Exhibit 1.01 – Conflict Minerals Report as required by Items 1.01 and 1.02 of this Form SD.

Exhibit 1.01 Exhibit 1.01 to Form SD Conflict Minerals Report (1) Introduction Teradyne, Inc. (“Teradyne” or the “Company”) has determined that gold, columbite-tantalite (coltan), cassiterite and wolframite, including their derivatives, tantalum, tin and tungsten (“Conflict Minerals”), are necessary to the functionality or production of products manufactured or contracted to be manufactured by Ter

April 30, 2025 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT Teradyne, Inc. (Exact name of the registrant as specified in its charter) MASSACHUSETTS 001-06462 04-2272148 (State or other jurisdiction of

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT Teradyne, Inc. (Exact name of the registrant as specified in its charter) MASSACHUSETTS 001-06462 04-2272148 (State or other jurisdiction of incorporation or organization) (Commission File Number) (IRS Employer Identification No.) 600 Riverpark Drive, North Reading, MA 01864 (Address of pr

April 29, 2025 EX-99.1

Quarter Ended

Exhibit 99.1 Teradyne Reports First Quarter 2025 Results • Revenue towards the high end and earnings above Q1 guidance ranges • Revenue of $686 million in Q1’25, up 14% from Q1’24 • Strong year-over-year growth driven by Semiconductor Test • Board of Directors approves $1B share repurchase program Q1'25 Q1'24 Q4'24 Revenue (mil) $ 686 $ 600 $ 753 GAAP EPS $ 0.61 $ 0.40 $ 0.90 Non-GAAP EPS $ 0.75 $

April 29, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): April 28, 2025 TERADYNE, INC. (Ex

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): April 28, 2025 TERADYNE, INC. (Exact Name of Registrant as Specified in Charter) Massachusetts 001-06462 04-2272148 (State or Other Jurisdiction of Incorporation) (Commission File Num

March 28, 2025 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A (Rule 14a-101) SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A (Rule 14a-101) SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as

March 28, 2025 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A (Rule 14a-101) SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A (Rule 14a-101) SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as

March 6, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): March 5, 2025 TERADYNE, INC. (Exa

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): March 5, 2025 TERADYNE, INC. (Exact Name of Registrant as Specified in Charter) Massachusetts 001-06462 04-2272148 (State or Other Jurisdiction of Incorporation) (Commission File Numb

February 25, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): February 25, 2025 TERADYNE, INC.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): February 25, 2025 TERADYNE, INC. (Exact Name of Registrant as Specified in Charter) Massachusetts 001-06462 04-2272148 (State or Other Jurisdiction of Incorporation) (Commission File

February 25, 2025 EX-99.1

Teradyne to Host 2025 Financial Analyst Day

EX-99.1 Exhibit 99.1 Teradyne to Host 2025 Financial Analyst Day NORTH READING, Mass. – February 25, 2025 – Teradyne, Inc. (NASDAQ: TER), a leading supplier of automated test solutions, today announced it will host a Financial Analyst Day on March 11, 2025 at the Company’s headquarters in North Reading, Massachusetts. The event will feature presentations from members of the leadership team who wil

February 20, 2025 EX-97.1

Policy for Recoupment of Incentive Compensation.

Exhibit 97.1 TERADYNE, INC. POLICY FOR RECOUPMENT OF INCENTIVE COMPENSATION 1. Introduction In accordance with Section 10D of the Securities Exchange Act of 1934, as amended, and the regulations thereunder, the Board of Directors (the “Board”) of Teradyne, Inc. (the “Company”) has adopted a policy (the “Policy”) providing for the Company’s recoupment of certain incentive-based compensation receive

February 20, 2025 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K ANNUAL REPORT PURSUANT TO SECTIONS 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K ANNUAL REPORT PURSUANT TO SECTIONS 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 (MARK ONE) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES

February 20, 2025 EX-4.3

Description of Teradyne, Inc. Securities Registered under Section 12 of the Exchange Act.

Exhibit 4.3 DESCRIPTION OF COMMON STOCK As of December 31, 2024, Teradyne, Inc. (“Teradyne” or the “Company”) has its common stock as the only class of securities under Section 12 of the Securities Exchange Act of 1934, as amended. The following is a description of the material terms and provisions of the Company’s common stock and may not contain all the information that is important to you. Plea

February 20, 2025 EX-21.1

Subsidiaries of Teradyne.

Exhibit 21.1 Present Subsidiaries Entity Name: State or Jurisdiction Of Incorporation Percentage of Voting Securities Owned Teradyne (Asia) Pte., Ltd. Singapore 100 %* Teradyne Canada Limited Canada 100 % Teradyne de Costa Rica S.R.L. Costa Rica 100 % Teradyne GmbH Germany 100 %* Teradyne Holdings Denmark ApS Denmark 100%* Teradyne International Holdings B.V. The Netherlands 100 % Teradyne Interna

January 30, 2025 EX-99.1

FY 2024

Exhibit 99.1 Teradyne Reports Fourth Quarter 2024 Results • Revenue and earnings at the high-end of Q4 guidance • Revenue of $753 million in Q4’24, up 12% from Q4’23 • Q4 growth driven by strong AI-related demand and improved broader market dynamics Q4'24 Q4'23 Q3'24 FY 2024 FY 2023 Revenue (mil) $ 753 $ 671 $ 737 $ 2,820 $ 2,676 GAAP EPS $ 0.90 $ 0.72 $ 0.89 $ 3.32 $ 2.73 Non-GAAP EPS $ 0.95 $ 0.

January 30, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): January 29, 2025 TERADYNE, INC. (

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): January 29, 2025 TERADYNE, INC. (Exact Name of Registrant as Specified in Charter) Massachusetts 001-06462 04-2272148 (State or Other Jurisdiction of Incorporation) (Commission File N

January 8, 2025 8-K

Current Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): January 2, 2025 TERADYNE, INC. (Exact Name of Registrant as Specified in Charter) Massachusetts 001-06462 04-2272148 (State or Other Jurisdiction of Incorporation) (Commission File Nu

January 2, 2025 144

144

144 0001225110 XXXXXXXX LIVE 0000097210 TERADYNE, INC 001-06462 600 RIVERPARK DRIVE NORTH READING MA 01864 978-370-2700 JOHNSON MERCEDES Director Common Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917 625 79225.

November 1, 2024 EX-10.2

Executive Officer Change in Control Agreement dated August 23, 2024 between Teradyne, Inc. and John Lukez * (filed herewith)

Exhibit 10.2 EXECUTIVE OFFICER CHANGE IN CONTROL AGREEMENT EXECUTIVE OFFICER CHANGE IN CONTROL AGREEMENT entered into this 23rd day of August, 2024, by and between Teradyne, Inc. (including its subsidiaries, “Teradyne”), and the undersigned executive officer (“Employee”). WITNESSETH: WHEREAS, Teradyne and Employee desire to set forth certain terms and conditions relating to the termination of Empl

November 1, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 29, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 001-06462 TERADYNE,

November 1, 2024 EX-10.1

Executive Officer Change in Control Agreement dated November 14, 2023 between Teradyne, Inc. and John Wood * (filed herewith)

Exhibit 10.1 EXECUTIVE OFFICER CHANGE IN CONTROL AGREEMENT EXECUTIVE OFFICER CHANGE IN CONTROL AGREEMENT entered into this 14th day of November, 2023, by and between Teradyne, Inc. (including its subsidiaries, “Teradyne”), and the undersigned executive officer (“Employee”). WITNESSETH: WHEREAS, Teradyne and Employee desire to set forth certain terms and conditions relating to the termination of Em

October 24, 2024 EX-99.1

Quarter Ended

Exhibit 99.1 Teradyne Reports Third Quarter 2024 Results • Revenue at the high-end and earnings above Q3 guidance • Revenue of $737 million in Q3’24, up 5% from Q3’23 • Year-over-year growth driven by strong AI-related demand Q3'24 Q3'23 Q2'24 Revenue (mil) $ 737 $ 704 $ 730 GAAP EPS $ 0.89 $ 0.78 $ 1.14 Non-GAAP EPS $ 0.90 $ 0.80 $ 0.86 NORTH READING, Mass. – October 23, 2024 – Teradyne, Inc. (NA

October 24, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): October 23, 2024 TERADYNE, INC. (

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): October 23, 2024 TERADYNE, INC. (Exact Name of Registrant as Specified in Charter) Massachusetts 001-06462 04-2272148 (State or Other Jurisdiction of Incorporation) (Commission File N

August 2, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 001-06462 TERADYNE, INC.

August 2, 2024 EX-10.1

Third Amendment to Credit Agreement dated November 7, 2023 among Teradyne, Inc., Truist Bank, as the administrative agent, issuing bank and swingline lender, and other lenders party thereto (filed herewith)

Exhibit 10.1 THIRD AMENDMENT TO CREDIT AGREEMENT This THIRD AMENDMENT TO CREDIT AGREEMENT, dated as of November 7, 2023 (this “Third Amendment”), is entered into among TERADYNE, INC., a Massachusetts corporation (the “Borrower”), the Lenders (as defined below) party hereto and the Administrative Agent (as defined below), and modifies that certain Credit Agreement, dated as of May 1, 2020 (as amend

July 25, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): July 24, 2024 TERADYNE, INC. (Exa

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): July 24, 2024 TERADYNE, INC. (Exact Name of Registrant as Specified in Charter) Massachusetts 001-06462 04-2272148 (State or Other Jurisdiction of Incorporation) (Commission File Numb

July 25, 2024 EX-99.1

Quarter Ended

Exhibit 99.1 Teradyne Reports Second Quarter 2024 Results • Revenue and earnings above the high-end of Q2 guidance • Revenue of $730 million in Q2’24, up 7% from Q2’23 • 14% YoY Growth in Q2 for Semiconductor Test driven by continued strength in memory and demand recovery in SoC Q2'24 Q2'23 Q1'24 Revenue (mil) $ 730 $ 684 $ 600 GAAP EPS $ 1.14 $ 0.73 $ 0.40 Non-GAAP EPS $ 0.86 $ 0.79 $ 0.51 NORTH

May 31, 2024 8-K

Regulation FD Disclosure

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): May 27, 2024 TERADYNE, INC. (Exact Name of Registrant as Specified in Charter) Massachusetts 001-06462 04-2272148 (State or Other Jurisdiction of Incorporation) (Commission File Numbe

May 31, 2024 EX-3.1

Investment Agreement, dated November 7, 2023, by and among Teradyne, Inc., Technoprobe S.p.A., T-Plus S.p.A., and Teradyne International Holdings B.V.

Exhibit 3.1 To Teradyne International Holdings B.V. Basisweg 10, 1043AP Amsterdam, the Netherlands To the attention of: Ms. Manuela Fumagalli and Ms. Margot Elisabeth A. van Looveren, Via e-mail to: [email protected]; [email protected]; (Managing Directors A); and To the attention of: Mextrust B.V. and PhastabeWEK B.V. (Managing Directors B) Via e-mail to proxy holders:

May 17, 2024 8-K

Current Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): May 16, 2024 TERADYNE, INC. (Exact Name of Registrant as Specified in Charter) Massachusetts 001-06462 04-2272148 (State or Other Jurisdiction of Incorporation) (Commission File Numbe

May 10, 2024 8-K

Current Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): May 9, 2024 TERADYNE, INC. (Exact Name of Registrant as Specified in Charter) Massachusetts 001-06462 04-2272148 (State or Other Jurisdiction of Incorporation) (Commission File Number

May 10, 2024 EX-3.1

Restated Articles of Organization of Teradyne, Inc., effective May 9, 2024

Exhibit 3.1 The Commonwealth of Massachusetts      William Francis Galvin Secretary of the Commonwealth One Ashburton Place, Boston, Massachusetts 02108-1512 FORM MUST BE  TYPED Restated Articles of Organization FORM MUST BE TYPED (General Laws Chapter I56D, Section 10.07, 950 CMR 113.35) (1) Exact name of corporation: Teradyne, Inc. (2) Registered office address: United Agent Group Inc., 225 Ceda

May 6, 2024 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT Teradyne, Inc. (Exact name of the registrant as specified in its charter) MASSACHUSETTS 001-06462 04-2272148 (State or other jurisdiction of

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT Teradyne, Inc. (Exact name of the registrant as specified in its charter) MASSACHUSETTS 001-06462 04-2272148 (State or other jurisdiction of incorporation or organization) (Commission File Number) (IRS Employer Identification No.) 600 Riverpark Drive, North Reading, MA 01864 (Address of pr

May 6, 2024 EX-1.01

Exhibit 1.01 – Conflict Minerals Report as required by Items 1.01 and 1.02 of this Form SD.

Exhibit 1.01 Exhibit 1.01 to Form SD Conflict Minerals Report (1) Introduction Teradyne, Inc. (“Teradyne” or the “Company”) has determined that gold, columbite-tantalite (coltan), cassiterite and wolframite, including their derivatives, tantalum, tin and tungsten (“Conflict Minerals”), are necessary to the functionality or production of products manufactured or contracted to be manufactured by Ter

May 3, 2024 EX-10.1

Form of Time-Based Restricted Stock Unit Agreement for Executive Officers under the 2006 Equity and Cash Compensation Incentive Plan, as amended* (filed herewith)

Exhibit 10.1 TERADYNE, INC. 2006 EQUITY AND CASH COMPENSATION INCENTIVE PLAN NOTICE OF RESTRICTED STOCK UNIT GRANT AND TERMS FOR U.S. EXECUTIVE RECIPIENTS Name: Employee ID: In granting restricted stock units, Teradyne, Inc. (“Teradyne”) seeks to provide employees of Teradyne and its subsidiaries with incentive to help drive Teradyne’s future success and to share in the economic benefits of that s

May 3, 2024 10-Q

d UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

d UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 001-06462 TERADYNE, I

May 3, 2024 EX-10.2

Form of Executive Officer Stock Option Agreement under the 2006 Equity and Cash Compensation Incentive Plan, as amended* (filed herewith)

Exhibit 10.2 TERADYNE, INC. 2006 EQUITY AND CASH COMPENSATION INCENTIVE PLAN NOTICE OF STOCK OPTION GRANT AND TERMS FOR U.S. RECIPIENTS Name: Employee Number: In granting stock options, Teradyne, Inc. (“Teradyne”) seeks to provide employees with incentive to help drive Teradyne’s future success and to share in the economic benefits of that success. We all look forward to your contributions to that

April 25, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): April 24, 2024 TERADYNE, INC. (Ex

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): April 24, 2024 TERADYNE, INC. (Exact Name of Registrant as Specified in Charter) Massachusetts 001-06462 04-2272148 (State or Other Jurisdiction of Incorporation) (Commission File Num

April 25, 2024 EX-99.1

Quarter Ended

Exhibit 99.1 Teradyne Reports First Quarter 2024 Results • Revenue and earnings above the high-end of Q1 guidance • Revenue of $600 million in Q1’24, down 3% from Q1’23 • Strong year-over-year growth in memory test offset by continued softness in mobility Q1'24 Q1'23 Q4'23 Revenue (mil) $ 600 $ 618 $ 671 GAAP EPS $ 0.40 $ 0.50 $ 0.72 Non-GAAP EPS $ 0.51 $ 0.55 $ 0.79 NORTH READING, Mass. – April 2

March 29, 2024 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A (Rule 14a-101) SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A (Rule 14a-101) SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as

March 29, 2024 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A (Rule 14a-101) SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A (Rule 14a-101) SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as

March 19, 2024 PRE 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A (Rule 14a-101) SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A (Rule 14a-101) SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☒ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as

February 22, 2024 EX-10.38

Executive Officer Change in Control Agreement dated February 2, 2024 between Teradyne, Inc. and Ryan Driscoll.*

Exhibit 10.38 EXECUTIVE OFFICER CHANGE IN CONTROL AGREEMENT EXECUTIVE OFFICER CHANGE IN CONTROL AGREEMENT entered into this 2nd day of February, 2024, by and between Teradyne, Inc. (including its subsidiaries, “Teradyne”), and the undersigned executive officer (“Employee”). WITNESSETH: WHEREAS, Teradyne and Employee desire to set forth certain terms and conditions relating to the termination of Em

February 22, 2024 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K ANNUAL REPORT PURSUANT TO SECTIONS 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K ANNUAL REPORT PURSUANT TO SECTIONS 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 (MARK ONE) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES

February 22, 2024 EX-97.1

Policy for Recoupment of Incentive Compensation.

Exhibit 97.1 TERADYNE, INC. POLICY FOR RECOUPMENT OF INCENTIVE COMPENSATION 1. Introduction In accordance with Section 10D of the Securities Exchange Act of 1934, as amended, and the regulations thereunder, the Board of Directors (the “Board”) of Teradyne, Inc. (the “Company”) has adopted a policy (the “Policy”) providing for the Company’s recoupment of certain incentive-based compensation receive

February 22, 2024 EX-4.3

Description of Teradyne, Inc. Securities Registered under Section 12 of the Exchange Act.

Exhibit 4.3 DESCRIPTION OF COMMON STOCK As of December 31, 2023, Teradyne, Inc. (“Teradyne” or the “Company”) has its common stock as the only class of securities under Section 12 of the Securities Exchange Act of 1934, as amended. The following is a description of the material terms and provisions of the Company’s common stock and may not contain all the information that is important to you. Plea

February 22, 2024 EX-21.1

Subsidiaries of Teradyne.

Exhibit 21.1 Present Subsidiaries Entity Name: State or Jurisdiction Of Incorporation Percentage of Voting Securities Owned Teradyne (Asia) Pte., Ltd. Singapore 100 %* Teradyne Canada Limited Canada 100 % Teradyne de Costa Rica S.R.L. Costa Rica 100 % Teradyne GmbH Germany 100 %* Teradyne Holdings Denmark ApS Denmark 100 %* Teradyne International Holdings B.V. The Netherlands 100 % Teradyne Intern

February 13, 2024 SC 13G/A

TER / Teradyne, Inc. / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SC 13G/A 1 tv02057-teradyneinc.htm SCHEDULE 13G/A SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 15)* Name of issuer: Teradyne Inc Title of Class of Securities: Common Stock CUSIP Number: 880770102 Date of Event Which Requires Filing of this Statement: December 29, 2023 Check the appropriate box to designate the rule

January 31, 2024 EX-99.1

FY 2023

Exhibit 99.1 Teradyne Reports Fourth Quarter and Fiscal Year 2023 Results • Revenue of $671 million in Q4'23, down 8% from Q4'22 • Revenue of $2,676 million in FY 2023, down 15% from FY 2022 • Record Robotics revenue in Q4'23, up 50% from Q3'23 and 17% from Q4'22 Q4'23 Q4'22 Q3'23 FY 2023 FY 2022 Revenue (mil) $ 671 $ 732 $ 704 $ 2,676 $ 3,155 GAAP EPS $ 0.72 $ 1.04 $ 0.78 $ 2.73 $ 4.22 Non-GAAP E

January 31, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): January 30, 2024 TERADYNE, INC. (

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): January 30, 2024 TERADYNE, INC. (Exact Name of Registrant as Specified in Charter) Massachusetts 001-06462 04-2272148 (State or Other Jurisdiction of Incorporation) (Commission File N

January 29, 2024 EX-3.1

Exhibit 3.1 to Teradyne’s Current Report on Form 8-K filed on January 29, 2024.

EX-3.1 Exhibit 3.1 [ANNOTATED] **************** AMENDED AND RESTATED BY-LAWS OF TERADYNE, INC. (Amended and Restated as of January 23, 2024) **************** ARTICLE I Name, Location, Seal and Fiscal Year 1. Name. The name of the corporation is Teradyne, Inc. 2. Location. The corporation may have an office and transact business in Boston, Massachusetts, and at such other place or places as the Boa

January 29, 2024 8-K/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K/A Amendment No. 1 CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): January 25, 202

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K/A Amendment No. 1 CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): January 25, 2024 TERADYNE, INC. (Exact Name of Registrant as Specified in Charter) Massachusetts 001-06462 04-2272148 (State or Other Jurisdiction of Incorporation)

January 29, 2024 EX-10.1

Executive Officer Agreement, dated January 25, 2024, between Teradyne Inc. and Charles J. Gray

EX-10.1 Exhibit 10.1 EXECUTIVE OFFICER AGREEMENT This EXECUTIVE OFFICER AGREEMENT is entered into this 25th day of January 2024, by and between Teradyne, Inc., a Massachusetts corporation (“Teradyne” or the “Company”), and Charles J. Gray, Vice President and General Counsel of Teradyne (the “Executive”). WHEREAS, the Executive and the Company have agreed that the Executive will retire as Vice Pres

January 29, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): January 23, 2024 TERADYNE, INC. (

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): January 23, 2024 TERADYNE, INC. (Exact Name of Registrant as Specified in Charter) Massachusetts 001-06462 04-2272148 (State or Other Jurisdiction of Incorporation) (Commission File N

January 12, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): January 12, 2024 TERADYNE, INC. (

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): January 12, 2024 TERADYNE, INC. (Exact Name of Registrant as Specified in Charter) Massachusetts 001-06462 04-2272148 (State or Other Jurisdiction of Incorporation) (Commission File N

January 12, 2024 EX-99.1

Bridget A. van Kralingen Elected to Teradyne’s Board of Directors

Exhibit 99.1 FOR IMMEDIATE RELEASE For more information, contact: Andy Blanchard Investor Relations Tel 978.370.2425 [email protected] Bridget A. van Kralingen Elected to Teradyne’s Board of Directors NORTH READING, Mass. – January 12, 2024 – Teradyne, Inc. (NASDAQ:TER) announced the election of Bridget A. van Kralingen to its Board of Directors effective January 12, 2024. Ms. van Kra

November 15, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): November 14, 2023 TERADYNE, INC.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): November 14, 2023 TERADYNE, INC. (Exact Name of Registrant as Specified in Charter) Massachusetts 001-06462 04-2272148 (State or Other Jurisdiction of Incorporation) (Commission File

November 8, 2023 EX-99.1

Teradyne and Technoprobe Announce Strategic Agreements to Drive Semiconductor Test Interface Innovation and Accelerate Growth

EX-99.1 Exhibit 99.1 Teradyne and Technoprobe Announce Strategic Agreements to Drive Semiconductor Test Interface Innovation and Accelerate Growth • Teradyne to acquire 10% ownership of Technoprobe • Technoprobe to acquire Teradyne’s Device Interface Solutions Business • Teradyne and Technoprobe to Engage in Joint Development Projects North Reading, Mass. – November 7, 2023 – Teradyne, Inc. (NASDA

November 8, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): November 7, 2023 TERADYNE, INC. (

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): November 7, 2023 TERADYNE, INC. (Exact Name of Registrant as Specified in Charter) Massachusetts 001-06462 04-2272148 (State or Other Jurisdiction of Incorporation) (Commission File N

November 8, 2023 SC 13G/A

TER / Teradyne, Inc. / JPMORGAN CHASE & CO - FILING TERADYNE, INC. Passive Investment

Schedule 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 01)* TERADYNE, INC. (Name of Issuer) Common Stock, par value $0.125 per share (Title of Class of Securities) 880770102 (CUSIP Number) October 31, 2023 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate

November 3, 2023 EX-10.2

Exhibit 10.2 to Teradyne's Quarterly Report on Form 10-Q for the quarter ended October 1, 2023

Exhibit 10.2 Teradyne Employment Agreement In consideration of and as a condition of my employment with Teradyne, a Teradyne Corporation (hereinafter referred to as "the Company"), [a wholly owned subsidiary of Teradyne, Inc., a corporation of the Commonwealth of Massachusetts (“Teradyne”)], and in consideration of the mutual covenants contained in this agreement between the Company and me (the “A

November 3, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended October 1, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 001-06462 TERADYNE, IN

November 3, 2023 EX-10.1

Exhibit 10.1 to Teradyne's Quarterly Report on Form 10-Q for the quarter ended October 1, 2023.

Exhibit 10.1 EXECUTIVE OFFICER CHANGE IN CONTROL AGREEMENT EXECUTIVE OFFICER CHANGE IN CONTROL AGREEMENT entered into this 21st day of August, 2023, by and between Teradyne, Inc. (including its subsidiaries, “Teradyne”), and the undersigned executive officer of Teradyne (“Employee”). WITNESSETH: WHEREAS, Teradyne and Employee desire to set forth certain terms and conditions relating to the termina

October 26, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): October 25, 2023 TERADYNE, INC. (

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): October 25, 2023 TERADYNE, INC. (Exact Name of Registrant as Specified in Charter) Massachusetts 001-06462 04-2272148 (State or Other Jurisdiction of Incorporation) (Commission File N

October 26, 2023 EX-99.1

Quarter Ended

Exhibit 99.1 Teradyne Reports Third Quarter 2023 Results • Revenue and earnings above the mid-point of Q3 guidance • Revenue of $704 million in Q3’23, down 15% from Q3’22 • Robotics demand stabilized, Q3'23 revenue down 4% from Q3'22, up 20% from Q2'23 • Returned $136 million to shareholders in share repurchases and dividends in Q3’23 Q3'23 Q3'22 Q2'23 Revenue (mil) $ 704 $ 827 $ 684 GAAP EPS $ 0.

August 4, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSIO N Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended July 2, 2023 OR ☐ TRANSITION REPORT

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSIO N Washington, D.

July 27, 2023 EX-99.1

Teradyne Reports Second Quarter 2023 Results

EX-99.1 Exhibit 99.1 Teradyne Reports Second Quarter 2023 Results • Revenue and earnings above the mid-point of Q2 guidance • Revenue of $684 million in Q2’23, down 19% from Q2’22 • Returned $152 million to shareholders in share repurchases and dividends in Q2’23 Q2’23 Q2’22 Q1’23 Revenue (mil) $ 684 $ 841 $ 618 GAAP EPS $ 0.73 $ 1.16 $ 0.50 Non-GAAP EPS $ 0.79 $ 1.21 $ 0.55 NORTH READING, Mass. –

July 27, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): July 26, 2023 TERADYNE, INC. (Exa

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): July 26, 2023 TERADYNE, INC. (Exact Name of Registrant as Specified in Charter) Massachusetts 001-06462 04-2272148 (State or Other Jurisdiction of Incorporation) (Commission File Numb

May 24, 2023 EX-1.01

Exhibit 1.01 – Conflict Minerals Report as required by Items 1.01 and 1.02 of this Form SD.

Exhibit 1.01 to Form SD Conflict Minerals Report (1) Introduction Teradyne, Inc. (“Teradyne” or the “Company”) has determined that gold, columbite-tantalite (coltan), cassiterite and wolframite, including their derivatives, tantalum, tin and tungsten (“Conflict Minerals”), are necessary to the functionality or production of products manufactured or contracted to be manufactured by Teradyne. We con

May 24, 2023 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT Teradyne, Inc. (Exact name of the registrant as specified in its charter) MASSACHUSETTS 001-06462 04-2272148 (State or other jurisdiction of

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT Teradyne, Inc. (Exact name of the registrant as specified in its charter) MASSACHUSETTS 001-06462 04-2272148 (State or other jurisdiction of incorporation or organization) (Commission File Number) (IRS Employer Identification No.) 600 Riverpark Drive, North Reading, MA 01864 (Address of pr

May 16, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): May 12, 2023 TERADYNE, INC. (Exac

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): May 12, 2023 TERADYNE, INC. (Exact Name of Registrant as Specified in Charter) Massachusetts 001-06462 04-2272148 (State or Other Jurisdiction of Incorporation) (Commission File Numbe

May 5, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended April 2, 2023 OR ☐ TRANSITION REPORT

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended April 2, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 001-06

April 27, 2023 EX-99.1

Teradyne Reports First Quarter 2023 Results

EX-99.1 Exhibit 99.1 Teradyne Reports First Quarter 2023 Results • Revenue and earnings above the mid-point of Q1 guidance • Revenue of $618 million in Q1’23, down 18% from Q1’22 • Returned $110 million to shareholders in share repurchases and dividends in Q1’23 Q1’23 Q1’22 Q4’22 Revenue (mil) $ 618 $ 755 $ 732 GAAP EPS $ 0.50 $ 0.92 $ 1.04 Non-GAAP EPS $ 0.55 $ 0.98 $ 0.92 NORTH READING, Mass. –

April 27, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): April 26, 2023 TERADYNE, INC. (Ex

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): April 26, 2023 TERADYNE, INC. (Exact Name of Registrant as Specified in Charter) Massachusetts 001-06462 04-2272148 (State or Other Jurisdiction of Incorporation) (Commission File Num

March 31, 2023 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A (Rule 14a-101) SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.)

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A (Rule 14a-101) SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the C

March 31, 2023 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A (Rule 14a-101) SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.)

DEFA14A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A (Rule 14a-101) SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission

March 28, 2023 8-K

Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): March 24, 2023 TERADYNE, INC. (Exact Name of Registrant as Specified in Charter) Massachusetts 001-06462 04-2272148 (State or Other Jurisdiction of Incorporation) (Commission File Num

March 28, 2023 EX-3.1

Amended and Restated By-Laws of Teradyne, Inc.

EX-3.1 Exhibit 3.1 [ANNOTATED] **************** AMENDED AND RESTATED BY-LAWS OF TERADYNE, INC. (Amended and Restated as of March 24, 2023) **************** ARTICLE I Name, Location, Seal and Fiscal Year 1. Name. The name of the corporation is Teradyne, Inc. 2. Location. The corporation may have an office and transact business in Boston, Massachusetts, and at such other place or places as the Board

February 22, 2023 EX-10.13

Exhibit 10.13 to Teradyne's Annual Report on Form 10-K for the fiscal year ended December 31, 2022.

EX-10.13 Exhibit 10.13 TERADYNE, INC. 1996 EMPLOYEE STOCK PURCHASE PLAN (as amended, effective November 14, 2022) Article 1—Purpose. This 1996 Employee Stock Purchase Plan (the “Plan”) is intended to encourage stock ownership by all eligible employees of Teradyne, Inc. (the “Company”), a Massachusetts corporation, and its participating subsidiaries (as defined in Article 17) so that they may share

February 22, 2023 EX-4.3

Filed herewith.

EX-4.3 Exhibit 4.3 DESCRIPTION OF COMMON STOCK As of December 31, 2022, Teradyne, Inc. (“Teradyne” or the “Company”) has its common stock as the only class of securities under Section 12 of the Securities Exchange Act of 1934, as amended. The following is a description of the material terms and provisions of the Company’s common stock and may not contain all the information that is important to yo

February 22, 2023 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K ANNUAL REPORT PURSUANT TO SECTIONS 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 (MARK ONE) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHA

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K ANNUAL REPORT PURSUANT TO SECTIONS 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 (MARK ONE) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2022 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES

February 22, 2023 EX-10.18

Exhibit 10.18 to Teradyne's Annual Report on Form 10-K for the fiscal year ended December 31, 2022.

EX-10.18 Exhibit 10.18 AGREEMENT REGARDING TERMINATION BENEFITS This Agreement Regarding Termination Benefits (“Agreement”) is entered into this 31st day of January, 2023 (the “Effective Date”) by and between Teradyne, Inc., a Massachusetts corporation with a principal office at 600 Riverpark Drive, North Reading, MA 01864 (the “Company”) and Gregory S. Smith, the Chief Executive Officer and Presi

February 22, 2023 EX-21.1

Filed herewith.

EX-21.1 Exhibit 21.1 Present Subsidiaries Entity Name: State or Jurisdiction Of Incorporation Percentage of Voting Securities Owned Teradyne (Asia) Pte., Ltd. Singapore 100 %* Teradyne Canada Limited Canada 100 % Teradyne de Costa Rica S.R.L. Costa Rica 100 % Teradyne GmbH Germany 100 %* Teradyne Holdings Denmark ApS Denmark 100 %* Teradyne (India) Engineering Private Ltd. India 100 %* Teradyne In

February 22, 2023 EX-10.21

Exhibit 10.21 to Teradyne's Annual Report on Form 10-K for the fiscal year ended December 31, 2022.

EX-10.21 Exhibit 10.21 EXECUTIVE OFFICER AGREEMENT This EXECUTIVE OFFICER AGREEMENT is entered into this 31st day of January, 2023, by and between Teradyne, Inc., a Massachusetts corporation (“Teradyne” or the “Company”), and Mark E. Jagiela, the Chief Executive Officer of Teradyne (the “Executive”). WHEREAS, the Executive and Teradyne are parties to an Agreement Regarding Termination Benefits dat

February 9, 2023 SC 13G/A

TER / Teradyne, Inc. / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SC 13G/A 1 tv02027-teradyneinc.htm SCHEDULE 13G/A SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 14)* Name of issuer: Teradyne Inc. Title of Class of Securities: Common Stock CUSIP Number: 880770102 Date of Event Which Requires Filing of this Statement: December 30, 2022 Check the appropriate box to designate the rul

February 3, 2023 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): January 31, 2023 TERADYNE, INC. (Exact Name of Registrant as Specified in Charter) Massachusetts 001-06462 04-2272148 (State or Other Jurisdiction of Incorporation) (Commission File N

January 26, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): January 25, 2023 TERADYNE, INC. (

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): January 25, 2023 TERADYNE, INC. (Exact Name of Registrant as Specified in Charter) Massachusetts 001-06462 04-2272148 (State or Other Jurisdiction of Incorporation) (Commission File N

January 26, 2023 EX-99.1

Teradyne Reports Fourth Quarter and Fiscal Year 2022 Results

EX-99.1 Exhibit 99.1 Teradyne Reports Fourth Quarter and Fiscal Year 2022 Results • Revenue of $732 million in Q4’22, down 17% from record Q4’21 • Revenue of $3,155 million in FY 2022, down 15% from record FY 2021 • Test Revenue contracted 17% in FY 2022 • Industrial Automation revenue grew 7% in dollar terms in FY2022, 15% in constant currency. • Expect to repurchase up to $500 million in shares

January 13, 2023 SC 13G

TER / Teradyne, Inc. / JPMORGAN CHASE & CO - FILING TERADYNE, INC. Passive Investment

Schedule 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. )* TERADYNE, INC. (Name of Issuer) Common Stock, par value $0.125 per share (Title of Class of Securities) 880770102 (CUSIP Number) December 30, 2022 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate

November 16, 2022 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): November 15, 2022 TERADYNE, INC. (Exact Name of Registrant as Specified in Charter) Massachusetts 001-06462 04-2272148 (State or Other Jurisdiction of Incorporation) (Commission File

November 16, 2022 EX-99.1

Teradyne Announces CEO Succession

Exhibit 99.1 FOR IMMEDIATE RELEASE For more information, contact: Andrew Blanchard Investor Relations Tel 978.370.2425 [email protected] Teradyne Announces CEO Succession NORTH READING, Mass. ? November 15, 2022 ? The Teradyne (Nasdaq: TER) Board of Directors today named Gregory Smith to succeed Mark E. Jagiela as CEO effective February 1, 2023. Mr. Smith will join the Board of Direct

November 4, 2022 EX-10.1

Exhibit 10.1 to Teradyne’s Quarterly Report on Form 10-Q for the quarter ended October 2, 2022.

Exhibit 10.1 EXECUTION VERSION SECOND AMENDMENT TO CREDIT AGREEMENT This SECOND AMENDMENT TO CREDIT AGREEMENT, dated as of October 5, 2022 (this ?Second Amendment?), is entered into among TERADYNE, INC., a Massachusetts corporation (the ?Borrower?), the Consenting Lenders (as defined below) and Replacement Lenders (as defined below) party hereto, and the Administrative Agent (as defined below), an

November 4, 2022 EX-99.1

Ernest E. Maddock Elected to Teradyne’s Board of Directors

Exhibit 99.1 FOR IMMEDIATE RELEASE For more information, contact: Andy Blanchard Investor Relations Tel 978.370.2425 [email protected] Ernest E. Maddock Elected to Teradyne?s Board of Directors NORTH READING, Mass. ? November 2, 2022 ? Teradyne, Inc. (NASDAQ:TER) announced the election of Ernest E. Maddock to its Board of Directors effective November 14, 2022. Mr. Maddock was also app

November 4, 2022 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): November 2, 2022 TERADYNE, INC. (Exact Name of Registrant as Specified in Charter) Massachusetts 001-06462 04-2272148 (State or Other Jurisdiction of Incorporation) (Commission File N

November 4, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended October 2, 2022 OR ☐ TRANSITION REPO

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended October 2, 2022 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 001-

October 26, 2022 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): October 25, 2022 TERADYNE, INC. (Exact Name of Registrant as Specified in Charter) Massachusetts 001-06462 04-2272148 (State or Other Jurisdiction of Incorporation) (Commission File N

October 26, 2022 EX-99.1

Teradyne Reports Third Quarter 2022 Results

Exhibit 99.1 Teradyne Reports Third Quarter 2022 Results ? Revenue and earnings above the mid-point of Q3 guidance ? Test revenue declined 14% from Q3?21, incrementally stronger than July guidance on improved supply chain performance ? Industrial Automation revenue declined 2% from Q3?21 in dollar terms, grew 7% in constant currency Q3?22 Q3?21 Q2?22 Revenue (mil) $ 827 $ 951 $ 841 GAAP EPS $ 1.10

September 6, 2022 EX-3.1

Amended and Restated Bylaws of Teradyne, Inc., effective September 6, 2022

Exhibit 3.1 [ANNOTATED] **************** AMENDED AND RESTATED BY-LAWS OF TERADYNE, INC. (Amended and Restated as of September 6, 2022) **************** ARTICLE I Name, Location, Seal and Fiscal Year 1. Name. The name of the corporation is Teradyne, Inc. 2. Location. The corporation may have an office and transact business in Boston, Massachusetts, and at such other place or places as the Board of

September 6, 2022 8-K

Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): September 6, 2022 TERADYNE, INC. (Exact Name of Registrant as Specified in Charter) Massachusetts 001-06462 04-2272148 (State or Other Jurisdiction of Incorporation) (Commission File

August 5, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended July 3, 2022 OR ☐ TRANSITION REPORT

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended July 3, 2022 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 001-064

July 27, 2022 EX-99.1

Teradyne Reports Second Quarter 2022 Results

Exhibit 99.1 Teradyne Reports Second Quarter 2022 Results ? Revenue and earnings above the mid-point of Q2 guidance ? System Test, Wireless Test and Industrial Automation revenues grew compared with Q2?21 while Semiconductor Test declined consistent with guidance ? Automotive and memory test demand strong while mobility and compute related demand softening ? Industrial Automation growth slowing Q2

July 27, 2022 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): July 26, 2022 TERADYNE, INC. (Exact Name of Registrant as Specified in Charter) Massachusetts 001-06462 04-2272148 (State or Other Jurisdiction of Incorporation) (Commission File Numb

July 8, 2022 CORRESP

Teradyne, Inc. 600 Riverpark Drive North Reading, MA 01864

Teradyne, Inc. 600 Riverpark Drive North Reading, MA 01864 July 8, 2022 BY EDGAR Securities and Exchange Commission Division of Corporation Finance 100 F Street, N.E. Washington, D.C. 20549 Attn: Tara Harkins and Dan Gordon Re: Comment Letter Dated June 27, 2022 Teradyne, Inc. Form 10-K for the Period Ended December 31, 2021 Filed February 23, 2022 File No. 001-06462 Ladies and Gentlemen: Teradyne

June 7, 2022 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): June 3, 2022 TERADYNE, INC. (Exact Name of Registrant as Specified in Charter) Massachusetts 001-06462 04-2272148 (State or Other Jurisdiction of Incorporation) (Commission File Numbe

May 25, 2022 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT Teradyne, Inc. (Exact name of the registrant as specified in its charter) MASSACHUSETTS 001-06462 04-2272148 (State or other jurisdiction of

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT Teradyne, Inc. (Exact name of the registrant as specified in its charter) MASSACHUSETTS 001-06462 04-2272148 (State or other jurisdiction of incorporation or organization) (Commission File Number) (IRS Employer Identification No.) 600 Riverpark Drive, North Reading, MA 01864 (Address of pr

May 25, 2022 EX-1.01

1

Exhibit 1.01 to Form SD Conflict Minerals Report (1) Introduction Teradyne, Inc. (?Teradyne? or the ?Company?) has determined that gold, columbite-tantalite (coltan), cassiterite and wolframite, including their derivatives, tantalum, tin and tungsten (?Conflict Minerals?), are necessary to the functionality or production of products manufactured or contracted to be manufactured by Teradyne. We con

May 16, 2022 8-K

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): May 13, 2022 TERADYNE, INC. (Exact Name of Registrant as Specified in Charter) Massachusetts 001-06462 04-2272148 (State or Other Jurisdiction of Incorporation) (Commission File Numbe

May 6, 2022 S-8 POS

As filed with the Securities and Exchange Commission on May 6, 2022 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 POST-EFFECTIVE AMENDMENT NO. 1 TO FORM S-8 REGISTRATION STATEMENT NO. 333-177246 POST-EFFECTIVE AMENDMENT NO.

Registration Nos. 333-177246, 333-32547, 333-155564, 333-149017, 333-73700, 033-64683 and 033-55123 As filed with the Securities and Exchange Commission on May 6, 2022 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 POST-EFFECTIVE AMENDMENT NO. 1 TO FORM S-8 REGISTRATION STATEMENT NO. 333-177246 POST-EFFECTIVE AMENDMENT NO. 1 TO FORM S-8 REGISTRATION STATEMENT NO. 333-32547

May 6, 2022 S-8 POS

As filed with the Securities and Exchange Commission on May 6, 2022 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 POST-EFFECTIVE AMENDMENT NO. 1 TO FORM S-8 REGISTRATION STATEMENT NO. 333-177246 POST-EFFECTIVE AMENDMENT NO.

Registration Nos. 333-177246, 333-32547, 333-155564, 333-149017, 333-73700, 033-64683 and 033-55123 As filed with the Securities and Exchange Commission on May 6, 2022 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 POST-EFFECTIVE AMENDMENT NO. 1 TO FORM S-8 REGISTRATION STATEMENT NO. 333-177246 POST-EFFECTIVE AMENDMENT NO. 1 TO FORM S-8 REGISTRATION STATEMENT NO. 333-32547

May 6, 2022 S-8 POS

As filed with the Securities and Exchange Commission on May 6, 2022 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 POST-EFFECTIVE AMENDMENT NO. 1 TO FORM S-8 REGISTRATION STATEMENT NO. 333-177246 POST-EFFECTIVE AMENDMENT NO.

Registration Nos. 333-177246, 333-32547, 333-155564, 333-149017, 333-73700, 033-64683 and 033-55123 As filed with the Securities and Exchange Commission on May 6, 2022 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 POST-EFFECTIVE AMENDMENT NO. 1 TO FORM S-8 REGISTRATION STATEMENT NO. 333-177246 POST-EFFECTIVE AMENDMENT NO. 1 TO FORM S-8 REGISTRATION STATEMENT NO. 333-32547

May 6, 2022 S-8 POS

As filed with the Securities and Exchange Commission on May 6, 2022 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 POST-EFFECTIVE AMENDMENT NO. 1 TO FORM S-8 REGISTRATION STATEMENT NO. 333-177246 POST-EFFECTIVE AMENDMENT NO.

S-8 POS 1 d358069ds8pos.htm S-8 POS Registration Nos. 333-177246, 333-32547, 333-155564, 333-149017, 333-73700, 033-64683 and 033-55123 As filed with the Securities and Exchange Commission on May 6, 2022 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 POST-EFFECTIVE AMENDMENT NO. 1 TO FORM S-8 REGISTRATION STATEMENT NO. 333-177246 POST-EFFECTIVE AMENDMENT NO. 1 TO FORM S-8

May 6, 2022 S-8 POS

As filed with the Securities and Exchange Commission on May 6, 2022 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 POST-EFFECTIVE AMENDMENT NO. 1 TO FORM S-8 REGISTRATION STATEMENT NO. 333-177246 POST-EFFECTIVE AMENDMENT NO.

S-8 POS 1 d358069ds8pos.htm S-8 POS Registration Nos. 333-177246, 333-32547, 333-155564, 333-149017, 333-73700, 033-64683 and 033-55123 As filed with the Securities and Exchange Commission on May 6, 2022 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 POST-EFFECTIVE AMENDMENT NO. 1 TO FORM S-8 REGISTRATION STATEMENT NO. 333-177246 POST-EFFECTIVE AMENDMENT NO. 1 TO FORM S-8

May 6, 2022 S-8 POS

As filed with the Securities and Exchange Commission on May 6, 2022 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 POST-EFFECTIVE AMENDMENT NO. 1 TO FORM S-8 REGISTRATION STATEMENT NO. 333-177246 POST-EFFECTIVE AMENDMENT NO.

S-8 POS 1 d358069ds8pos.htm S-8 POS Registration Nos. 333-177246, 333-32547, 333-155564, 333-149017, 333-73700, 033-64683 and 033-55123 As filed with the Securities and Exchange Commission on May 6, 2022 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 POST-EFFECTIVE AMENDMENT NO. 1 TO FORM S-8 REGISTRATION STATEMENT NO. 333-177246 POST-EFFECTIVE AMENDMENT NO. 1 TO FORM S-8

May 6, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended April 3, 2022 OR ☐ TRANSITION REPORT

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended April 3, 2022 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 001-06

May 6, 2022 S-8 POS

As filed with the Securities and Exchange Commission on May 6, 2022 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 POST-EFFECTIVE AMENDMENT NO. 1 TO FORM S-8 REGISTRATION STATEMENT NO. 333-177246 POST-EFFECTIVE AMENDMENT NO.

Registration Nos. 333-177246, 333-32547, 333-155564, 333-149017, 333-73700, 033-64683 and 033-55123 As filed with the Securities and Exchange Commission on May 6, 2022 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 POST-EFFECTIVE AMENDMENT NO. 1 TO FORM S-8 REGISTRATION STATEMENT NO. 333-177246 POST-EFFECTIVE AMENDMENT NO. 1 TO FORM S-8 REGISTRATION STATEMENT NO. 333-32547

April 27, 2022 EX-99.1

Teradyne Reports First Quarter 2022 Results

Exhibit 991 Teradyne Reports First Quarter 2022 Results ? Revenue and earnings above the mid-point of Q1 guidance ? Revenue of $755 million in Q1?22, down 3% from Q1?21 ? Test revenue down 7% in Q1?22 from Q1?21 ? Industrial Automation revenue in Q1?22 grew 29% from Q1?21 Q1?22 Q1?21 Q4?21 Revenue (mil) $ 755 $ 782 $ 885 GAAP EPS $ 0.

April 27, 2022 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): April 26, 2022 TERADYNE, INC. (Exact Name of Registrant as Specified in Charter) Massachusetts 001-06462 04-2272148 (State or Other Jurisdiction of Incorporation) (Commission File Num

April 1, 2022 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A (Rule 14a-101) SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A (Rule 14a-101) SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.) Filed by the Registrant ? Filed by a Party other than the Registrant ? Check the appropriate box: ? Preliminary Proxy Statement ? Confidential, for Use of the Commission Only (as

April 1, 2022 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A (Rule 14a-101) SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.)

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A (Rule 14a-101) SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the C

February 23, 2022 EX-4.3

Filed herewith.

Exhibit 4.3 DESCRIPTION OF COMMON STOCK As of December 31, 2021, Teradyne, Inc. (?Teradyne? or the ?Company?) has its common stock as the only class of securities under Section 12 of the Securities Exchange Act of 1934, as amended. The following is a description of the material terms and provisions of the Company?s common stock and may not contain all the information that is important to you. Plea

February 23, 2022 EX-10.52

Exhibit 10.52 to Teradyne’s Annual Report on Form 10-K for the fiscal year ended December 31, 2021.

Exhibit 10.52 EXECUTION VERSION FIRST AMENDMENT TO CREDIT AGREEMENT This FIRST AMENDMENT TO CREDIT AGREEMENT, dated as of December 10, 2021 (this ?First Amendment?), is entered into among TERADYNE, INC., a Massachusetts corporation (the ?Borrower?), the Consenting Lenders (as defined below) and Replacement Lenders (as defined below) party hereto, and the Administrative Agent (as defined below), an

February 23, 2022 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K ANNUAL REPORT PURSUANT TO SECTIONS 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K ANNUAL REPORT PURSUANT TO SECTIONS 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 (MARK ONE) ? ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2021 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES

February 23, 2022 EX-21.1

Filed herewith.

Exhibit 21.1 Present Subsidiaries Entity Name: State or Jurisdiction Of Incorporation Percentage of Voting Securities Owned Teradyne (Asia) Pte., Ltd. Singapore 100 %* Teradyne Canada Limited Canada 100 % Teradyne de Costa Rica S.R.L. Costa Rica 100 % Teradyne GmbH Germany 100 %* Teradyne Holdings Denmark ApS Denmark 100 %* Teradyne (India) Engineering Private Ltd. India 100 %* Teradyne Internatio

February 10, 2022 SC 13G/A

TER / Teradyne, Inc. / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SC 13G/A 1 tv02020-teradyneinc.htm SCHEDULE 13G/A SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 13)* Name of issuer: Teradyne Inc. Title of Class of Securities: Common Stock CUSIP Number: 880770102 Date of Event Which Requires Filing of this Statement: December 31, 2021 Check the appropriate box to designate the rul

January 27, 2022 EX-99.1

Teradyne Reports Fourth Quarter and Fiscal Year 2021 Results

Exhibit 99.1 Teradyne Reports Fourth Quarter and Fiscal Year 2021 Results ? Revenue of $885 million in Q4?21, growth of 17% from Q4?20 ? Full year 2021 revenue grew 19%, GAAP EPS grew 30%, Non-GAAP EPS grew 29% from 2020 ? Test Revenue grew 16% in Q4?21 from Q4?20, 17% in FY?21 ? Universal Robots Revenue grew 22% in Q4?21 from Q4?20, 41% in FY?21 ? MiR Revenue grew 46% in Q4?21 from Q4?20, 42% in

January 27, 2022 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): January 26, 2022 TERADYNE, INC. (Exact Name of Registrant as Specified in Charter) Massachusetts 001-06462 04-2272148 (State or Other Jurisdiction of Incorporation) (Commission File N

November 5, 2021 EX-10.1

Exhibit 10.1 to Teradyne’s Quarterly Report on form 10-Q for the quarter ended October 3, 2021.

Exhibit 10.1 Teradyne, Inc. Deferral Plan for Non-Employee Directors (Restated Effective January 1, 2005) WHEREAS, Teradyne, Inc. (the ?Company?) has established the Teradyne, Inc. Deferral Plan for Non-Employee Directors, effective January 1, 2001, and amended as of March 1, 2003, (the ?Prior Plan?) which provides each Non-Employee Director of the Company with an election to defer receipt of his

November 5, 2021 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended October 3, 2021 OR ☐ TRANSITION REPO

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended October 3, 2021 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 001-

November 5, 2021 EX-4.1

Exhibit 4.1 to Teradyne’s Quarterly Report on Form 10-Q for the quarter ended October 3, 2021.

EX-4.1 2 d207854dex41.htm EX-4.1 Exhibit 4.1 TERADYNE, INC. and WILMINGTON TRUST, NATIONAL ASSOCIATION as Trustee FIRST SUPPLEMENTAL INDENTURE Dated as of November 4, 2021 Supplementing the INDENTURE Dated as of December 12, 2016 1.25% Senior Convertible Notes due 2023 FIRST SUPPLEMENTAL INDENTURE (this “Supplemental Indenture”), dated as of November 4, 2021, between Teradyne, Inc., a Massachusett

October 27, 2021 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): October 26, 2021 TERADYNE, INC. (Exact Name of Registrant as Specified in Charter) Massachusetts 001-06462 04-2272148 (State or Other Jurisdiction of Incorporation) (Commission File N

October 27, 2021 EX-99.1

Teradyne Reports Third Quarter 2021 Results

Exhibit 99.1 Teradyne Reports Third Quarter 2021 Results ? Revenue of $951 million in Q3?21 grew 16% from Q3?20 and 63% from Q3?19 ? GAAP Gross Margin 60% in Q3?21, up from 56% in Q3?20 and 59% in Q3?19 ? Q3?21 GAAP earnings per share grew 17% from Q3?20 and 88% from Q3?19 ? Q3?21 non-GAAP earnings per share grew 35% from Q3?20 and 106% from Q3?19 ? Test revenue grew 14% from Q3?20 and 67% from Q3

September 29, 2021 EX-99.1

Ford Tamer Elected to Teradyne’s Board of Directors

Exhibit 99.1 FOR IMMEDIATE RELEASE For more information, contact: Andy Blanchard Investor Relations Tel 978.370.2425 [email protected] Ford Tamer Elected to Teradyne?s Board of Directors NORTH READING, Mass. ? September 28, 2021 ? Teradyne, Inc. (NASDAQ:TER) announces the election of Ford Tamer to its Board of Directors effective November 8, 2021. Mr. Tamer was also appointed to the B

September 29, 2021 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): September 27, 2021 TERADYNE, INC. (Exact Name of Registrant as Specified in Charter) Massachusetts 001-06462 04-2272148 (State or Other Jurisdiction of Incorporation) (Commission File

August 6, 2021 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended July 4, 2021 OR ☐ TRANSITION REPORT

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended July 4, 2021 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 001-064

July 28, 2021 EX-99.1

Teradyne Reports Second Quarter 2021 Results

Exhibit 99.1 Teradyne Reports Second Quarter 2021 Results ? Revenue of $1,086 million in Q2?21 grew 29% from Q2?20 and 92% from Q2?19 ? GAAP Gross Margin 59.6% in Q2?21, up from 56.2% in Q2?20 and 57.4% in Q2?19 ? Q2?21 GAAP earnings per share grew 68% from Q2?20 and 220% from Q2?19 ? Q2?21 non-GAAP earnings per share grew 44% from Q2?20 and 189% from Q2?19 ? Test revenue grew 27% from Q2?20 and 1

July 28, 2021 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): July 27, 2021 TERADYNE, INC. (Exact Name of Registrant as Specified in Charter) Massachusetts 001-06462 04-2272148 (State or Other Jurisdiction of Incorporation) (Commission File Numb

May 26, 2021 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT Teradyne, Inc. (Exact name of the registrant as specified in its charter) MASSACHUSETTS 001-06462 04-2272148 (State or other jurisdiction of

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT Teradyne, Inc. (Exact name of the registrant as specified in its charter) MASSACHUSETTS 001-06462 04-2272148 (State or other jurisdiction of incorporation or organization) (Commission File Number) (IRS Employer Identification No.) 600 Riverpark Drive, North Reading, MA 01864 (Address of pr

May 26, 2021 EX-1.01

Conflict Minerals Report

Exhibit 1.01 to Form SD Conflict Minerals Report (1) Introduction Teradyne, Inc. (?Teradyne? or the ?Company?) has determined that gold, columbite-tantalite (coltan), cassiterite and wolframite, including their derivatives, tantalum, tin and tungsten (?Conflict Minerals?), are necessary to the functionality or production of products manufactured or contracted to be manufactured by Teradyne. We con

May 14, 2021 S-8

As filed with the Securities and Exchange Commission on May 14, 2021

As filed with the Securities and Exchange Commission on May 14, 2021 Registration No.

May 13, 2021 EX-10.1

1996 Employee Stock Purchase Plan, as amended.

Exhibit 10.1 TERADYNE, INC. 1996 EMPLOYEE STOCK PURCHASE PLAN (as amended, effective May 7, 2021) Article 1?Purpose. This 1996 Employee Stock Purchase Plan (the ?Plan?) is intended to encourage stock ownership by all eligible employees of Teradyne, Inc. (the ?Company?), a Massachusetts corporation, and its participating subsidiaries (as defined in Article 17) so that they may share in the growth o

May 13, 2021 EX-3.1

Exhibit 3.1 to Teradyne’s Current Report on Form 8-K filed on May 13, 2021.

Exhibit 3.1 D PC The Commonwealth of Massachusetts William Francis Galvin Secretary of the Commonwealth One Ashburton Place, Boston, Massachusetts 02108-1512 FORM MUST BE TYPED Restated Articles of Organization FORM MUST BE TYPED (General Laws Chapter I56D, Section 10.07, 950 CMR 113.35) (1) Exact name of corporation: Teradyne, Inc. (2) Registered office address: United Agent Group Inc., 225 Cedar

May 13, 2021 EX-99.1

Teradyne Announces Election of Paul Tufano as Chair of the Board

Exhibit 99.1 FOR IMMEDIATE RELEASE For more information, contact: Andy Blanchard Investor Relations Tel 978.370.2425 [email protected] Teradyne Announces Election of Paul Tufano as Chair of the Board NORTH READING, Mass. ? May 7, 2021 ? Teradyne, Inc. (NASDAQ:TER) announced today the Board of Directors has elected Paul Tufano Chair of the Board. Mr. Tufano is the former Chief Executiv

May 13, 2021 EX-10.2

Exhibit 10.2 to Teradyne’s Current Report on Form 8-K filed on May 13, 2021.

Exhibit 10.2 TERADYNE, INC. 2006 EQUITY AND CASH COMPENSATION INCENTIVE PLAN (as amended through May 7, 2021) 1. Purpose and Eligibility. The purpose of this 2006 Equity and Cash Compensation Incentive Plan (the ?Plan?) of Teradyne, Inc. is to provide equity ownership and compensation opportunities in the Company (each an ?Award?) to employees, officers, directors, consultants and advisors of the

May 13, 2021 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year, Financial Statements and Exhibits, Other Events, Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): May 7, 2021 TERADYNE, INC. (Exact Name of Registrant as Specified in Charter) Massachusetts 001-06462 04-2272148 (State or Other Jurisdiction of Incorporation) (Commission File Number

May 7, 2021 10-Q

Quarterly Report - 10-Q

Table of Contents Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

April 28, 2021 EX-99.1

Teradyne Reports First Quarter 2021 Results

Exhibit 99.1 Teradyne Reports First Quarter 2021 Results ? Revenue of $782 million in Q1?21, growth of 11% from Q1?20 ? Test revenue grew 9% from Q1?20 ? Industrial Automation revenue grew 33% from Q1?20 ? Q2?21 revenue guidance at mid-point represents 25% growth from Q2?20 Q1?21 Q1?20 Q4?20 Revenue (mil) $ 782 $ 704 $ 759 GAAP EPS $ 1.09 $ 0.97 $ 1.05 Non-GAAP EPS $ 1.11 $ 1.00 $ 1.10 ===========

April 28, 2021 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): April 27, 2021 TERADYNE, INC. (Exact Name of Registrant as Specified in Charter) Massachusetts 001-06462 04-2272148 (State or Other Jurisdiction of Incorporation) (Commission File Num

March 26, 2021 DEFA14A

- DEFINITIVE ADDITIONAL MATERIALS

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A (Rule 14a-101) SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ? Filed by a Party other than the Registrant ? Check the appropriate box: ? Preliminary Proxy Statement ? Confidential, for Use of the Commission Only (a

March 26, 2021 DEF 14A

- DEFINITIVE PROXY STATEMENT

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A (Rule 14a-101) SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.) Filed by the Registrant ? Filed by a Party other than the Registrant ? Check the appropriate box: ? Preliminary Proxy Statement ? Confidential, for Use of the C

March 10, 2021 PRE 14A

- PRELIMINARY PROXY STATEMENT

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A (Rule 14a-101) SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.) Filed by the Registrant ? Filed by a Party other than the Registrant ? Check the appropriate box: ? Preliminary Proxy Statement ? Confidential, for Use of the C

February 22, 2021 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K ANNUAL REPORT PURSUANT TO SECTIONS 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 (MARK ONE) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHA

Table of Contents Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.

February 22, 2021 EX-4.2

Filed herewith.

Exhibit 4.2 DESCRIPTION OF COMMON STOCK As of December 31, 2020, Teradyne, Inc. (?Teradyne? or the ?Company?) has its common stock as the only class of securities under Section 12 of the Securities Exchange Act of 1934, as amended. The following is a description of the material terms and provisions of the Company?s common stock and may not contain all the information that is important to you. Plea

February 22, 2021 EX-10.10

Exhibit 10.10 to Teradyne’s Annual Report on Form 10-K for the fiscal year ended December 31, 2020.

Exhibit 10.10 TERADYNE, INC. 2006 EQUITY AND CASH COMPENSATION INCENTIVE PLAN NOTICE OF RESTRICTED STOCK UNIT GRANT AND TERMS FOR U.S. RECIPIENTS Name: Employee ID: In granting restricted stock units, Teradyne, Inc. (?Teradyne?) seeks to provide employees of Teradyne and its subsidiaries with incentive to help drive Teradyne?s future success and to share in the economic benefits of that success. W

February 22, 2021 EX-21.1

Filed herewith.

Exhibit 21.1 Present Subsidiaries Entity Name: State or Jurisdiction Of Incorporation Percentage of Voting Securities Owned Teradyne (Asia) Pte., Ltd. Singapore 100 %* Teradyne Canada Limited Canada 100 % Teradyne de Costa Rica S.R.L. Costa Rica 100 % Teradyne GmbH Germany 100 %* Teradyne Holdings Denmark ApS Denmark 100 %* Teradyne (India) Engineering Private Ltd. India 100 %* Teradyne Internatio

February 22, 2021 EX-10.9

Exhibit 10.9 to Teradyne’s Annual Report on Form 10-K for the fiscal year ended December 31, 2020.

Exhibit 10.9 TERADYNE, INC. 2006 EQUITY AND CASH COMPENSATION INCENTIVE PLAN NOTICE OF PERFORMANCE-BASED RESTRICTED STOCK UNIT GRANT AND TERMS FOR U.S. RECIPIENTS Name: Employee ID: In granting restricted stock units, Teradyne, Inc. (?Teradyne?) seeks to provide employees of Teradyne and its subsidiaries with incentive to help drive Teradyne?s future success and to share in the economic benefits o

February 22, 2021 EX-10.11

Exhibit 10.11 to Teradyne’s Annual Report on Form 10-K for the fiscal year ended December 31, 2020.

Exhibit 10.11 STOCK OPTION TERMS FOR U.S. RECIPIENTS 1. Option Grant, Exercise and Vesting. (f) Stock Option Grant. Teradyne, Inc. hereby grants to the recipient an award (this ?Award?) of nonstatutory stock options (the ?Stock Options?) under the Teradyne, Inc. 2006 Equity and Cash Compensation Incentive Plan (the ?Plan?). The Stock Options represent the right of the recipient to purchase that nu

February 10, 2021 SC 13G/A

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 12)*

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 12)* Name of issuer: Teradyne Inc. Title of Class of Securities: Common Stock CUSIP Number: 880770102 Date of Event Which Requires Filing of this Statement: December 31, 2020 Check the appropriate box to designate the rule pursuant to which this Schedule is filed: ☒ Rule

January 29, 2021 EX-3.1

Exhibit 3.1 to Teradyne’s Current Report on Form 8-K filed on January 28, 2021.

EX-3.1 2 d107793dex31.htm EX-3.1 Exhibit 3.1 [ANNOTATED] **************** AMENDED AND RESTATED BY-LAWS OF TERADYNE, INC. (Amended and Restated as of January 26, 2021) **************** ARTICLE I Name, Location, Seal and Fiscal Year 1. Name. The name of the corporation is Teradyne, Inc. 2. Location. The corporation may have an office and transact business in Boston, Massachusetts, and at such other

January 29, 2021 8-K

Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): January 26, 2021 TERADYNE, INC. (Exact Name of Registrant as Specified in Charter) Massachusetts 001-06462 04-2272148 (State or Other Jurisdiction of Incorporation) (Commission File N

January 28, 2021 EX-99.1

Teradyne Reports Fourth Quarter and Fiscal Year 2020 Results

EX-99.1 Exhibit 99.1 Teradyne Reports Fourth Quarter and Fiscal Year 2020 Results • Revenue of $759 million in Q4’20, growth of 16% from Q4’19 • Full year 2020 revenue grew 36%, GAAP EPS 65%, Non-GAAP EPS 62% • Test Revenue growth of 18% in Q4’20 from Q4’19 • Higher than expected Industrial Automation shipments drove Q4 revenue above the high end of guidance • Industrial Automation revenue growth

January 28, 2021 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition - 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): January 27, 2021 TERADYNE, INC. (Exact Name of Registrant as Specified in Charter) Massachusetts 001-06462 04-2272148 (State or Other Jurisdiction of Incorporation) (Commission File N

November 12, 2020 EX-99.1

Roy Vallee to Retire from Teradyne’s Board of Directors in 2021

EX-99.1 Exhibit 99.1 FOR IMMEDIATE RELEASE For more information, contact: Andy Blanchard Investor Relations Tel 978.370.2425 [email protected] Roy Vallee to Retire from Teradyne’s Board of Directors in 2021 NORTH READING, Mass. – November 10, 2020 – Teradyne, Inc. (NASDAQ:TER) announced today that Roy Vallee, Teradyne Chairman of the Board of Directors and a member of the Compensation

November 12, 2020 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits, Other Events - 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): November 10, 2020 TERADYNE, INC. (Exact Name of Registrant as Specified in Charter) Massachusetts 001-06462 04-2272148 (State or Other Jurisdiction of Incorporation) (Commission File

November 2, 2020 EX-10.1

Exhibit 10.1 to Teradyne’s Quarterly Report on Form 10-Q for the quarter ended September 27, 2020.

EX-10.1 Exhibit 10.1 EXECUTIVE OFFICER CHANGE IN CONTROL AGREEMENT EXECUTIVE OFFICER CHANGE IN CONTROL AGREEMENT entered into this 1st day of October 2020 by and between Teradyne, Inc. (including its subsidiaries, “Teradyne”), and the undersigned executive officer Teradyne (“Employee”). WITNESSETH: WHEREAS, Teradyne and Employee desire to set forth certain terms and conditions relating to the term

November 2, 2020 EX-10.2

Exhibit 10.2 to Teradyne’s Quarterly Report on Form 10-Q for the quarter ended September 27, 2020.

EX-10.2 Exhibit 10.2 Employee Agreement In consideration of and as a condition of my promotion to President, Semiconductor Test by Teradyne, Inc., a Massachusetts corporation (hereinafter referred to as “the Company”), effective October 1, 2020 and in consideration of the mutual covenants contained in this agreement between the Company and me (the “Agreement”), the receipt and sufficiency of which

November 2, 2020 10-Q

Quarterly Report - 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 27, 2020 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 0

October 27, 2020 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits, Other Events - 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): October 26, 2020 TERADYNE, INC. (Exact Name of Registrant as Specified in Charter) Massachusetts 001-06462 04-2272148 (State or Other Jurisdiction of Incorporation) (Commission File N

October 27, 2020 EX-99.1

Peter Herweck Elected to Teradyne’s Board of Directors

EX-99.1 Exhibit 99.1 FOR IMMEDIATE RELEASE For more information, contact: Andy Blanchard Investor Relations Tel 978.370.2425 [email protected] Peter Herweck Elected to Teradyne’s Board of Directors NORTH READING, Mass. – October 26, 2020 – Teradyne, Inc. (NASDAQ:TER) announced the election of Peter Herweck to its Board of Directors effective November 9, 2020. Mr. Herweck was also appo

October 21, 2020 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition - 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): October 20, 2020 TERADYNE, INC. (Exact Name of Registrant as Specified in Charter) Massachusetts 001-06462 04-2272148 (State or Other Jurisdiction of Incorporation) (Commission File N

October 21, 2020 EX-99.1

Teradyne Reports Third Quarter 2020 Results

EX-99.1 Exhibit 99.1 Teradyne Reports Third Quarter 2020 Results • Revenue of $819 million in Q3’20 grew 41% from Q3’19 • Q3’20 GAAP earnings per share grew 61% and Non-GAAP earnings per share grew 53% from Q3’19 • Test revenue grew 46% from Q3’19 on Memory, Storage, and System on a Chip (SOC) Test strength • Industrial Automation revenue was up sequentially and flat with Q3’19 on improving global

September 16, 2020 EX-99.1

Teradyne Announces Senior Management Changes

EX-99.1 Exhibit 99.1 Teradyne Announces Senior Management Changes NORTH READING, Mass. – September 15, 2020 – Teradyne, Inc. (Nasdaq: TER) today announced two senior management changes. Gregory Smith has been appointed to the newly created position of President of Teradyne’s Industrial Automation Group, while Richard Burns has been appointed President of Teradyne’s Semiconductor Test Division, rep

September 16, 2020 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits, Other Events - 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): September 15, 2020 TERADYNE, INC. (Exact Name of Registrant as Specified in Charter) Massachusetts 001-06462 04-2272148 (State or Other Jurisdiction of Incorporation) (Commission File

August 3, 2020 10-Q

Quarterly Report - 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 28, 2020 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 001-06

July 22, 2020 EX-99.1

Teradyne Reports Second Quarter 2020 Results

EX-99.1 Exhibit 99.1 Teradyne Reports Second Quarter 2020 Results • Revenue of $839 million in Q2’20 grew 49% from Q2’19 • Q2’20 GAAP earnings per share grew 91% and Non-GAAP earnings per share grew 102% from Q2’19 • Test revenue grew 59% from Q2’19 on Semiconductor Test strength • Industrial Automation revenue declined 21% from Q2’19 on global manufacturing weakness • Q3’20 Revenue guidance at mi

July 22, 2020 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): July 21, 2020 TERADYNE, INC. (Exact Name of Registrant as Specified in Charter) Massachusetts 001-06462 04-2272148 (State or Other Jurisdiction of Incorporation) (Commission File Numb

May 27, 2020 SD

- FORM SD

FORM SD UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT Teradyne, Inc. (Exact name of the registrant as specified in its charter) MASSACHUSETTS 001-06462 04-2272148 (State or other jurisdiction of incorporation or organization) (Commission File Number) (IRS Employer Identification No.) 600 Riverpark Drive, North Reading, MA 01864 (Addre

May 27, 2020 EX-1.01

Conflict Minerals Report

EX-1.01 Exhibit 1.01 to Form SD Conflict Minerals Report (1) Introduction Teradyne, Inc. (“Teradyne” or the “Company”) has determined that gold, columbite-tantalite (coltan), cassiterite and wolframite, including their derivatives, tantalum, tin and tungsten (“Conflict Minerals”), are necessary to the functionality or production of products manufactured or contracted to be manufactured by Teradyne

May 12, 2020 8-K

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): May 8, 2020 TERADYNE, INC. (Exact Name of Registrant as Specified in Charter) Massachusetts 001-06462 04-2272148 (State or Other Jurisdiction of Incorporation) (Commission File Number

May 5, 2020 EX-10.1

Exhibit 10.1 to Teradyne’s Current Report on Form 8-K filed May 5, 2020.

EX-10.1 Exhibit 10.1 EXECUTION VERSION Published CUSIP: 88077LAE6 Revolving Loan CUSIP: 88077LAF3 CREDIT AGREEMENT dated as of May 1, 2020 among TERADYNE, INC., as Borrower, THE LENDERS FROM TIME TO TIME PARTY HERETO, and TRUIST BANK, as Administrative Agent SUNTRUST ROBINSON HUMPHREY, INC., as a Lead Arranger CITIZENS BANK, NATIONAL ASSOCIATION, as a Lead Arranger and a Syndication Agent HSBC BAN

May 5, 2020 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): May 1, 2020 TERADYNE, INC. (Exact Name of Registrant as Specified in Charter) Massachusetts 001-06462 04-2272148 (State or Other Jurisdiction of Incorporation) (Commission File Number

May 4, 2020 10-Q

Quarterly Report - 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 29, 2020 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 001-0

April 22, 2020 EX-99.1

Teradyne Reports First Quarter 2020 Results

EX-99.1 Exhibit 99.1 Teradyne Reports First Quarter 2020 Results • Revenue of $704 million in Q1’20, growth of 43% from Q1’19 • Test revenue grew 50% from Q1’19 • Industrial Automation revenue declined 9% from Q1’19 on global manufacturing weakness • Share repurchase program suspended as of April 1, 2020 Q1’20 Q1’19 Q4’19 Revenue (mil) $ 704 $ 494 $ 655 GAAP EPS $ 0.97 $ 0.62 $ 0.69 Non-GAAP EPS $

April 22, 2020 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): April 21, 2020 TERADYNE, INC. (Exact Name of Registrant as Specified in Charter) Massachusetts 001-06462 04-2272148 (State or Other Jurisdiction of Incorporation) (Commission File Num

April 8, 2020 DEFA14A

TER / Teradyne, Inc. DEFA14A - - DEFINITIVE ADDITIONAL MATERIALS

Definitive Additional Materials UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

March 27, 2020 DEFA14A

TER / Teradyne, Inc. DEFA14A - - DEFINITIVE ADDITIONAL MATERIALS

Definitive Additional Materials UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

March 27, 2020 DEF 14A

TER / Teradyne, Inc. DEF 14A - - DEF 14A

DEF 14A Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

March 2, 2020 EX-10.14

Filed herewith.

EX-10.14 Exhibit 10.14 TERADYNE, INC. AMENDED AND RESTATED SUB-PLAN TO THE TERADYNE, INC. 1996 EMPLOYEE STOCK PURCHASE PLAN FOR PARTICIPANTS LOCATED IN THE EUROPEAN UNION/EUROPEAN ECONOMIC AREA I. PURPOSE OF THE SUB-PLAN. (a) Teradyne, Inc. (the “Company”) has established the Teradyne, Inc. 1996 Employee Stock Purchase Plan, as amended from time to time (the “Plan”), to provide certain employees w

March 2, 2020 EX-10.15

Exhibit 10.15 to Teradyne’s Annual Report on Form 10-K for the fiscal year ended December 31, 2019

EX-10.15 Exhibit 10.15 SUPPLEMENT TO THE TERADYNE, INC. 1996 EMPLOYEE STOCK PURCHASE PLAN (as amended as of January 1, 2019) DANISH SECTION Preamble The purpose of this Supplement (the “Supplement”) to the Teradyne, Inc. 1996 Employee Stock Purchase Plan (the “Plan”), as amended, modified or restated (the Plan as modified by this Supplement in accordance with the terms hereof, the “Danish Subplan”

March 2, 2020 EX-2.2

Filed herewith.

EX-2.2 Exhibit 2.2 Copenhagen • October 2019 Final version - 10 October 2019 Amendment No. 1 to Share Sale and Purchase Agreement concerning Mobile Industrial Robots A/S CVR no. 35 25 12 35 Kobenhavn Aarhus Shanghai Langelinie Allé 35 Vaerkmestergade 2 Suite 2H08 T +45 72 27 00 00 Advokatpartnerselskab 2100 Kebenhavn Ø 8000 Aarhus C N0.1440 Yan’an Middle Road F +45 72 27 00 27 CVR-nr. 38538071 Dan

March 2, 2020 10-K

Annual Report - 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K ANNUAL REPORT PURSUANT TO SECTIONS 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 (MARK ONE) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2019 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES

March 2, 2020 EX-4.2

Filed herewith.

EX-4.2 Exhibit 4.2 DESCRIPTION OF COMMON STOCK As of December 31, 2019, Teradyne, Inc. (“Teradyne” or the “Company”) has its common stock as the only class of securities under Section 12 of the Securities Exchange Act of 1934, as amended. The following is a description of the material terms and provisions of the Company’s common stock and may not contain all the information that is important to yo

March 2, 2020 EX-21.1

Filed herewith.

EX-21.1 Exhibit 21.1 Present Subsidiaries Entity Name: State or Jurisdiction Of Incorporation Percentage of Voting Securities Owned Teradyne (Asia) Pte., Ltd. Singapore 100 %* Teradyne Canada Limited. Canada 100 % Teradyne de Costa Rica S.R.L. Costa Rica 100 % Teradyne GmbH Germany 100 %* Teradyne Holdings Denmark ApS Denmark 100 %* Teradyne (India) Engineering Private Ltd. India 100 %* Teradyne I

February 14, 2020 SC 13G/A

TER / Teradyne, Inc. / AMERIPRISE FINANCIAL INC - SC 13G/A Passive Investment

SC 13G/A SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Amendment #7 Under the Securities and Exchange Act of 1934 Teradyne, Inc (Name of Issuer) Common Stock (Title of Class of Securities) 880770102 (CUSIP Number) December 31, 2019 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Schedule is file

February 14, 2020 EX-99.I

to Schedule 13G

EX-99.I Exhibit I to Schedule 13G Ameriprise Financial, Inc., a Delaware Corporation, is a parent holding company. The classification and identity of the relevant subsidiaries is as follows: Investment Adviser – Columbia Management Investment Advisers, LLC is an investment adviser registered under section 203 of the Investment Advisers Act of 1940.

February 14, 2020 SC 13G/A

TER / Teradyne, Inc. / Vulcan Value Partners, LLC Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13G/A Under the Securities Exchange Act of 1934 (Amendment No. 1)1 Teradyne, Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 880770102 (CUSIP Number) December 31, 2019 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Schedu

February 14, 2020 EX-99.II

to Schedule 13G Joint Filing Agreement

EX-99.II Exhibit II to Schedule 13G Joint Filing Agreement The undersigned persons agree and consent to the joint filing on their behalf of this Schedule 13G dated February 14, 2020 in connection with their beneficial ownership of Teradyne, Inc. Columbia Management Investment Advisers, LLC authorizes Ameriprise Financial, Inc. to execute the Schedule 13G to which this Exhibit is attached and make

February 12, 2020 SC 13G/A

TER / Teradyne, Inc. / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 11)* Name of issuer: Teradyne Inc Title of Class of Securities: Common Stock CUSIP Number: 880770102 Date of Event Which Requires Filing of this Statement: December 31, 2019 Check the appropriate box to designate the rule pursuant to which this Schedule is filed: ☒ Rule

January 27, 2020 SC 13G/A

TER / Teradyne, Inc. / Wellington Management Group LLP - SEC SCHEDULE 13G Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 3 )* Teradyne, Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 880770102 (CUSIP Number) December 31, 2019 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Schedul

January 23, 2020 EX-99.1

Teradyne Reports Fourth Quarter and Fiscal Year 2019 Results

EX-99.1 Exhibit 99.1 Teradyne Reports Fourth Quarter and Fiscal Year 2019 Results • Revenue of $655 million in Q4’19, growth of 26% from Q4’18 • Full year 2019 revenue grew 9%, GAAP EPS 14%, Non-GAAP EPS 21% • Strong Semiconductor Test and LitePoint Wireless shipments drove Q4 revenue above the high end of guidance • Industrial Automation revenue growth of 5% in Q4, 14% in 2019 • Quarterly dividen

January 23, 2020 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): January 22, 2020 TERADYNE, INC. (Exact Name of Registrant as Specified in Charter) Massachusetts 001-06462 04-2272148 (State or Other Jurisdiction of Incorporation) (Commission File N

November 8, 2019 10-Q

Quarterly Report - 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 29, 2019 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 0

October 23, 2019 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): October 22, 2019 TERADYNE, INC. (Exact Name of Registrant as Specified in Charter) Massachusetts 001-06462 04-2272148 (State or Other Jurisdiction of Incorporation) (Commission File N

October 23, 2019 EX-99.1

Teradyne Reports Third Quarter 2019 Results

EX-99.1 Exhibit 99.1 Teradyne Reports Third Quarter 2019 Results • Semiconductor Test demand for 5G infrastructure remained strong • Memory test shipments grew 23% sequentially on Flash demand • Industrial Automation revenue up 4% from Q3’18 • Q3’19 GAAP earnings per share grew 19% and Non-GAAP earnings per share grew 8% from Q3’18 • Full year GAAP earnings per share expected to grow 11% and Non-G

August 9, 2019 10-Q

Quarterly Report - 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2019 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 001-06

August 9, 2019 EX-10.1

Exhibit 10.1 to Teradyne’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2019.

EX-10.1 Exhibit 10.1 EXECUTIVE OFFICER RETIREMENT AGREEMENT EXECUTIVE OFFICER RETIREMENT AGREEMENT entered into this 17th day of July 2019, by and between Teradyne, Inc., a Massachusetts corporation (“Teradyne” or the “Company”), and the undersigned executive officer of Teradyne (“Executive”). WITNESSETH: WHEREAS, the Executive is retiring from the Company effective July 17, 2019 (the “Retirement

July 24, 2019 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

8-K 1 d732342d8k.htm 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): July 23, 2019 TERADYNE, INC. (Exact Name of Registrant as Specified in Charter) Massachusetts 001-06462 04-2272148 (State or Other Jurisdiction of Incorporati

July 24, 2019 EX-99.1

Teradyne Reports Second Quarter 2019 Results

EX-99.1 Exhibit 99.1 Teradyne Reports Second Quarter 2019 Results • Q2’19 GAAP earnings per share grew 6% and Non-GAAP earnings per share grew 12% from Q2’18 • Semiconductor Test revenue up 4% from Q2’18 • Industrial Automation revenue up 20% from Q2’18 Q2’19 Q2’18 Q1’19 Revenue (mil) $ 564 $ 527 $ 494 GAAP EPS $ 0.55 $ 0.52 $ 0.62 Non-GAAP EPS $ 0.66 $ 0.59 $ 0.54 ================================

July 18, 2019 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): July 17, 2019 TERADYNE, INC. (Exact Name of Registrant as Specified in Charter) Massachusetts 001-06462 04-2272148 (State or Other Jurisdiction of Incorporation) (Commission File

June 27, 2019 8-K

Termination of a Material Definitive Agreement

8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): June 27, 2019 TERADYNE, INC. (Exact Name of Registrant as Specified in Charter) Massachusetts 001-06462 04-2272148 (State or Other Jurisdiction of Incorporation) (Commission File

May 29, 2019 SD

TER / Teradyne, Inc. SD - - SD

SD UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT Teradyne, Inc. (Exact name of the registrant as specified in its charter) MASSACHUSETTS 001-06462 04-2272148 (State or other jurisdiction of incorporation or organization) (Commission File Number) (IRS Employer Identification No.) 600 Riverpark Drive, North Reading, MA 01864 (Address of

May 29, 2019 EX-1.01

Conflict Minerals Report

EX-1.01 Exhibit 1.01 to Form SD Conflict Minerals Report (1) Introduction Teradyne, Inc. (“Teradyne” or the “Company”) has determined that gold, columbite-tantalite (coltan), cassiterite and wolframite, including their derivatives, tantalum, tin and tungsten (“Conflict Minerals”), are necessary to the functionality or production of products manufactured or contracted to be manufactured by Teradyne

May 10, 2019 EX-10.5

Exhibit 10.5 to Teradyne’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2019.

EX-10.5 Exhibit 10.5 TERADYNE, INC. 2006 EQUITY AND CASH COMPENSATION INCENTIVE PLAN NOTICE OF RESTRICTED STOCK UNIT GRANT AND TERMS FOR U.S. RECIPIENTS Name: Sanjay Mehta Employee ID: 748893 Supervisor: Mark Jagiela In granting restricted stock units, Teradyne, Inc. (“Teradyne”) seeks to provide employees of Teradyne and its subsidiaries with incentive to help drive Teradyne’s future success and

May 10, 2019 EX-10.4

Exhibit 10.4 to Teradyne’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2019.

EX-10.4 Exhibit 10.4 AGREEMENT REGARDING TERMINATION BENEFITS This Agreement Regarding Termination Benefits (“Agreement”) is entered into as of April 25, 2019 (the “Effective Date”) by and between Teradyne, Inc., a Massachusetts corporation with a principal office at 600 Riverpark Drive, North Reading, MA 01864 (the “Company”) and Sanjay Mehta, Vice President and Chief Financial Officer of the Com

May 10, 2019 10-Q

Quarterly Report - 10-Q

10-Q Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

May 10, 2019 EX-10.2

Exhibit 10.2 to Teradyne’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2019.

EX-10.2 Exhibit 10.2 EXECUTIVE OFFICER CHANGE IN CONTROL AGREEMENT EXECUTIVE OFFICER CHANGE IN CONTROL AGREEMENT entered into this 25th day of April 2019 by and between Teradyne, Inc. (including its subsidiaries, “Teradyne”), and the undersigned executive officer Teradyne (“Employee”). WITNESSETH: WHEREAS, Teradyne and Employee desire to set forth certain terms and conditions relating to the termi

May 10, 2019 EX-10.1

Exhibit 10.1 to Teradyne’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2019.

EX-10.1 Exhibit 10.1 February 8, 2019 Sanjay Mehta Re: Teradyne Offer of Employment Dear Sanjay, We are pleased to offer you the regular, full-time position of Vice President and Chief Financial Officer, reporting to myself, at our North Reading, MA headquarters. We expect your start date will be April 24, 2019 (“Start Date”). Cash Compensation You will be paid on a monthly basis at a rate of $41,

May 10, 2019 EX-10.3

Exhibit 10.3 to Teradyne’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2019.

EX-10.3 Exhibit 10.3 Employment Agreement In consideration of my employment by Teradyne, Inc., a corporation of the Commonwealth of Massachusetts (hereinafter referred to as “the Company”), and the payments made to me as consequence thereof, I agree that I will promptly report to an officer of the Company or to such other individual as may from time to time be designated, all inventions and new id

May 9, 2019 8-K

Submission of Matters to a Vote of Security Holders

8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): May 7, 2019 TERADYNE, INC. (Exact Name of Registrant as Specified in Charter) Massachusetts 001-06462 04-2272148 (State or Other Jurisdiction of Incorporation) (Commission File Nu

April 24, 2019 EX-99.1

Teradyne Reports First Quarter 2019 Results

EX-99.1 Exhibit 99.1 Teradyne Reports First Quarter 2019 Results • Q1’19 GAAP earnings per share grew 44% and Non-GAAP earnings per share grew 20% from Q1’18 • Industrial Automation revenue up 35% from Q1’18 on Universal Robots growth of 16% and the addition of Mobile Industrial Robots (MiR) • Expect 8% sequential revenue growth in Q2’19 at mid-point of guidance Q1’19 Q1’18 Q4’18 Revenue (mil) $ 4

April 24, 2019 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): April 23, 2019 TERADYNE, INC. (Exact Name of Registrant as Specified in Charter) Massachusetts 001-06462 04-2272148 (State or Other Jurisdiction of Incorporation) (Commission File

April 8, 2019 SC 13G/A

TER / Teradyne, Inc. / VANGUARD GROUP INC Passive Investment

teradyneinc.htm - Generated by SEC Publisher for SEC Filing SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 10 )* Name of issuer: Teradyne Inc Title of Class of Securities: Common Stock CUSIP Number: 880770102 Date of Event Which Requires Filing of this Statement: March 29, 2019 Check the appropriate box to designate

April 4, 2019 EX-99.1

Teradyne Appoints Sanjay Mehta as New Chief Financial Officer

EX-99.1 Exhibit 99.1 FOR IMMEDIATE RELEASE For more information, contact: Andrew Blanchard Investor Relations Tel 978.370.2425 [email protected] Teradyne Appoints Sanjay Mehta as New Chief Financial Officer NORTH READING, Mass. – April 4, 2019 – Teradyne, Inc. (NASDAQ: TER) today announced that Sanjay Mehta will join the company on April 25, 2019 as Vice President and Chief Financial

April 4, 2019 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits, Other Events

8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): April 4, 2019 TERADYNE, INC. (Exact Name of Registrant as Specified in Charter) Massachusetts 001-06462 04-2272148 (State or Other Jurisdiction of Incorporation) (Commission File

March 28, 2019 DEFA14A

TER / Teradyne, Inc. DEFINITIVE ADDITIONAL MATERIALS

Definitive Additional Materials UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

March 28, 2019 DEF 14A

TER / Teradyne, Inc. DEF 14A

DEF 14A Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

March 1, 2019 EX-3.1

Exhibit 3.1 to Teradyne’s Annual Report on Form 10-K for the fiscal year ended December 31, 2018.

Exhibit 3.1 Exhibit 3.1 The Commonwealth of Massachusetts William Francis Galvin Secretary of the Commonwealth One Ashburton Place, Boston, Massachusetts 02108-1512 FORM MUST BE TYPED Restated Articles of Organization FORM MUST BE TYPED (General Laws Chapter I56D, Section 10.07, 950 CMR 113.35) (1) Exact name of corporation: Teradyne, Inc. (2) Registered office address: 155 Federal Street, Suite 7

March 1, 2019 10-K

TER / Teradyne, Inc. FORM 10-K (Annual Report)

Form 10-K Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.

March 1, 2019 EX-21.1

Filed herewith.

Exhibit 21.1 Exhibit 21.1 Present Subsidiaries Entity Name: State or Jurisdiction Of Incorporation Percentage of Voting Securities Owned Teradyne (Asia) Pte., Ltd. Singapore 100 %* Teradyne Canada Limited Canada 100 % Teradyne de Costa Rica S.A. Costa Rica 100 % Teradyne GmbH Germany 100 %* Teradyne Holdings Denmark ApS Denmark 100 %* Teradyne (India) Engineering Private Ltd. India 100 %* Teradyne

March 1, 2019 EX-10.15

Exhibit 10.15 to Teradyne’s Annual Report on Form 10-K for the fiscal year ended December 31, 2018.

Exhibit 10.15 Exhibit 10.15 TERADYNE, INC. 1996 EMPLOYEE STOCK PURCHASE PLAN (as amended, effective January 1, 2019) Article 1—Purpose. This 1996 Employee Stock Purchase Plan (the “Plan”) is intended to encourage stock ownership by all eligible employees of Teradyne, Inc. (the “Company”), a Massachusetts corporation, and its participating subsidiaries (as defined in Article 17) so that they may sh

March 1, 2019 EX-10.10

Exhibit 10.10 to Teradyne’s Annual Report on Form 10-K for the fiscal year ended December 31, 2018.

Exhibit 10.10 Exhibit 10.10 SUPPLEMENT TO THE RESTRICTED STOCK UNIT SECTION OF THE TERADYNE, INC. 2006 EQUITY AND CASH COMPENSATION INCENTIVE PLAN (as amended as of January 21, 2019) DANISH SECTION Preamble The purpose of this Supplement (the “Supplement”) to the Teradyne, Inc. 2006 Equity and Cash Compensation Incentive Plan (the “Plan”) and the terms and conditions applicable to restricted stock

March 1, 2019 EX-10.9

Exhibit 10.9 to Teradyne’s Annual Report on Form 10-K for the fiscal year ended December 31, 2018.

Exhibit 10.9 Exhibit 10.9 TERADYNE, INC. 2006 EQUITY AND CASH COMPENSATION INCENTIVE PLAN (as amended through January 21, 2019) 1. Purpose and Eligibility. The purpose of this 2006 Equity and Cash Compensation Incentive Plan (the “Plan”) of Teradyne, Inc. is to provide equity ownership and compensation opportunities in the Company (each an “Award”) to employees, officers, directors, consultants an

February 15, 2019 SC 13G

TER / Teradyne, Inc. / Vulcan Value Partners, LLC Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. )1 Teradyne, Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 880770102 (CUSIP Number) December 31, 2018 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Schedule

February 14, 2019 EX-99.II

to Schedule 13G Joint Filing Agreement

EX-99.II Exhibit II to Schedule 13G Joint Filing Agreement The undersigned persons agree and consent to the joint filing on their behalf of this Schedule 13G dated February 14, 2019 in connection with their beneficial ownership of Teradyne Inc. Columbia Management Investment Advisers, LLC authorizes Ameriprise Financial, Inc. to execute the Schedule 13G to which this Exhibit is attached and make a

February 14, 2019 EX-99.I

to Schedule 13G

EX-99.I 2 d672826dex99i.htm EX-99.I Exhibit I to Schedule 13G Ameriprise Financial, Inc., a Delaware Corporation, is a parent holding company. The classification and identity of the relevant subsidiaries is as follows: Investment Adviser – Columbia Management Investment Advisers, LLC is an investment adviser registered under section 203 of the Investment Advisers Act of 1940.

February 14, 2019 SC 13G/A

TER / Teradyne, Inc. / AMERIPRISE FINANCIAL INC - SC 13G/A Passive Investment

SC 13G/A SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Amendment #6 Under the Securities and Exchange Act of 1934 Teradyne Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 880770102 (CUSIP Number) December 31, 2018 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Schedule is file

February 12, 2019 SC 13G/A

TER / Teradyne, Inc. / Wellington Management Group LLP - SEC SCHEDULE 13G Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 2 )* Teradyne, Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 880770102 (CUSIP Number) December 31, 2018 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Schedul

February 12, 2019 SC 13G/A

TER / Teradyne, Inc. / VANGUARD GROUP INC Passive Investment

teradyneinc.htm - Generated by SEC Publisher for SEC Filing SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 9 )* Name of issuer: Teradyne Inc Title of Class of Securities: Common Stock CUSIP Number: 880770102 Date of Event Which Requires Filing of this Statement: December 31, 2018 Check the appropriate box to designat

January 24, 2019 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): January 24, 2019 TERADYNE, INC. (Exact Name of Registrant as Specified in Charter) Massachusetts 001-06462 04-2272148 (State or Other Jurisdiction of Incorporation) (Commission Fi

January 24, 2019 EX-99.1

Teradyne Reports Fourth Quarter and Fiscal Year 2018 Results

EX-99.1 Exhibit 99.1 Teradyne Reports Fourth Quarter and Fiscal Year 2018 Results • Revenue of $520 million in Q4’18, organic growth of 5% from Q4’17 • Record full year memory and analog test shipments • Record 60% quarterly and 58% full year gross margin • Expect to repurchase $500 million in shares in 2019 • Quarterly dividend of $0.09 declared Q4’18 Q4’17 Q3’18 FY 2018 FY 2017 Revenue (mil) $ 5

January 24, 2019 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): January 23, 2019 TERADYNE, INC. (Exact Name of Registrant as Specified in Charter) Massachusetts 001-06462 04-2272148 (State or Other Jurisdiction of Incorporation) (Commission Fi

Other Listings
MX:TER
GB:0LEF 123,07 $
DE:TEY 101,42 €
IT:1TER 104,08 €
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