Latest filingSep 02, 2026Most recent Form 4
TER
TERADYNE, INC
NasdaqIndustrialsInstruments For Meas & Testing of Electricity & Elec Signals
Insider activity for last month from 08/03 to 09/03. Counts use processed Form 4 rows. Purchase and sale metrics use codes P and S; totals remain unknown when any matching value is missing. Rows without a usable transaction date cannot be assigned to a rolling period and are excluded.
Total buying$00 buys
Total selling$226M3 sells
Net open-market-$226M3 insiders
Open-market mix
Buy vs sell distribution by transaction countInsider activity report
Monthly open-market purchase and sale counts Buys Sells
Transaction codes
By Form 4 transaction code in selected period3transactions
- S · Open-market sells · dominant3 · 100%
Activity by reported role
A joint filing can contribute to multiple roles3transactions
- Director · dominant2 · 67%
- PRES1 · 33%
Distinct insiders active
Reporting-owner CIKs by month · peak Aug 2026 (2)Aug 2026Sep 2026
Reported Holdings After
Separated by insider, security, and ownership typeMatz MarilynCommon Stock · Direct
15,040.675Aug 17, 2026
Smith Gregory StephenCommon Stock · Direct
112,495.4075Aug 17, 2026
Johnson MercedesCommon Stock · Direct
6,364Sep 01, 2026
These are reported post-transaction holdings, not company-wide ownership percentages. Securities, indirect vehicles, and amendments are kept separate.
Filing activity heatmap
Each cell is one day · intensity = transactions · buys green, sells redAug 03 → Sep 03
LessMore
Top insiders
By absolute net value across the selected period- SS-$1.7M
- MM-$510.0k
- JM-$57.0k
Filing detail checks
Secondary metrics for the selected periodFiling-only signals
Deterministic matches in the selected period
TER transaction history
Filters apply within this company and selected period by default| Ticker | Insider | Role | Type | Shares | Value | Code | Signals | 90d return | Filed | Trans date |
|---|---|---|---|---|---|---|---|---|---|---|
| TER | JOHNSON MERCEDES | DIR | sale10b5-1 | 167 | -$5.69M | S | 0.0% | 09/02 | 09/01 | |
| TER | Smith Gregory Stephen | PRES | sale10b5-1 | 4.00k | -$170M | S | −17.0% | 08/18 | 08/17 | |
| TER | MATZ MARILYN | DIR | sale10b5-1 | 1.20k | -$51.0M | S | −17.0% | 08/18 | 08/17 |
TERADYNE, INC Insider Activity FAQ
SEC Form 4 contextWho recently reported transactions at TERADYNE, INC?
JOHNSON MERCEDES, Smith Gregory Stephen, MATZ MARILYN.
When was the latest reported open-market purchase?
No code-P purchase is available for this period.
When was the latest reported open-market sale?
Johnson Mercedes reported a sale on Sep 01, 2026 valued at $5.69M. Read the SEC filing.
What is the recent purchase and sale balance?
Net open-market selling in the selected period was $2,266,997.10. Sales can occur for many non-investment reasons.
Where can I see the original SEC filing?
Every transaction row and latest-activity fact links to its original SEC filing.
What do these Form 4 transaction codes mean?
P and S generally describe open-market or private purchases and sales. A, D, F, M, X, G, J, and V describe awards, issuer dispositions, tax withholding, exercises, gifts, other transactions, and voluntary early reports; review each filing and its footnotes for context.