Insider trade

Director sold ~$510K of TER shares in the open market

Traded Aug 17, 2026 · Filed Aug 18, 2026

TeradyneTER

~$510K
Reported value · 1,200 sh @ $425.00: 15K
Holds after · shares reported: -6.2%
stock since the trade · S&P 500 -1.1%, $443.14 → $415.79 on Oct 1

Why it stands out

A board member of Teradyne sold $510K of Teradyne shares. It was planned long ago, so it says very little.

Written from the filing's own figures. OQRO describes what was reported and never tells you what to buy or sell

View the official recordSEC Form 4 — Statement of Changes in Beneficial Ownership

All the details

Dates, kept separate

Transaction date: Aug 17, 2026
Reporting period: Not applicable
Filed with the SEC: Aug 18, 2026

Director$500K–$1MPre-arranged plan referenced

Context

Classification

open market sale

Code S — open-market or private sale

Absolute commitment

~$510,000

Shares × reported transaction price

Timing vs results

19 days after results of Jul 29, 2026

Results dates are the company's own 8-K (Item 2.02). Many companies only let insiders trade in a window after results

Price at the time

Closed at $443.14 on Aug 17, 2026, 305% above its 52-week low and 8% below its high, after a 17% rise over the previous 30 trading days

52-week range $109.30 (Aug 21, 2025) to $483.84 (Jun 30, 2026), 89% of the way up, from 251 adjusted closes. 30 trading days earlier: $379.52 on Jul 6, 2026. Describes the past only, not a forecast

Planned / mechanical clue

Footnote references a pre-arranged trading plan (Rule 10b5-1)

Only flagged when a footnote says so; never inferred

After it was reported

After	Stock	S&P 500	Difference
7 days	-4.4%	-0.4%	-4.0%
30 days	-2.1%	-1.0%	-1.2%

Past results only. Not a forecast.

Source receipt

Record ID: 0000904454-26-000462
Filed / recorded: Aug 18, 2026, 7:09 PM UTC
Added to OQRO: Oct 2, 2026, 12:28 PM UTC
Parser: form4-xml-v1
Data quality: Verified: identifiers matched exactly
Issuer: TERADYNE, INC
Issuer CIK: 97210
Ticker: TER
Reporting person: Marilyn Matz
Relationship: Director
Security: Common Stock
Table: Non-derivative (Table I)
Transaction date: Aug 17, 2026
Transaction code: S
Shares / units: 1,200
Price per share: $425.00
Acquired / disposed: Disposed (D)
Shares owned after: 15,040.675
Ownership form: Direct
Amendment: No

Footnotes from the filing

The reported transaction was effected pursuant to a sales plan adopted by the Reporting Person on February 13, 2026 and intended to comply with Rule 10b5-1 under the Securities Exchange Act of 1934.

Around the same time

Director plans to sell ~$140K of Teradyne

Planned, from pay3w ago

CEO sold ~$1.35M of Teradyne

Scheduled in advance3w ago

Director sold ~$270K of Teradyne

Scheduled in advance3w ago