Total buying$00 buys
TER
TERADYNE, INC
NasdaqIndustrialsInstruments For Meas & Testing of Electricity & Elec Signals
Insider activity for last month from 09/19 to 10/19.
How these metrics are calculated
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 selling$67.2k1 sells
Net open-market−$67.2kBuying minus selling
Active insiders5Distinct reporting owners
Insider activity report
Calendar-month buckets within the selected date range
Latest filing: Oct 02, 2026
Open-market transaction mix · 1 transactions in the selected period
Code A includes awards, grants and other acquisitions; these are not open-market buys. A rolling period can include partial calendar months.
View exact monthly counts and disclosed values
| Month | Buys | Sells | Awards (A) | Buy value | Sell value | Net P/S value |
|---|---|---|---|---|---|---|
| Sep 2026 | 0 | 0 | 3 | $0 | $0 | $0 |
| Oct 2026 | 0 | 1 | 0 | $0 | $67.2k | -$67.2k |
Distinct insiders active
Reporting-owner CIKs by month · peak Sep 2026 (4)Sep 2026Oct 2026
Largest insider activity
By absolute net disclosed value · current transaction page- JM-$67.3k
- HP+$0
- TJ+$0
- ME+$0
- HC+$0
TER transaction history
Newest filings · 20 transactions per pageLatest insider transactions
Form 4 filings from last month.| Company | Insider | Activity | Disclosed value | Filed (ET) |
|---|---|---|---|---|
TERTERADYNE, INC | Johnson MercedesDIR | S · sale10b5-1 detectedSEC filing ↗ | -$67.2kView disclosure → | |
TERTERADYNE, INC | Herweck PeterDIR | J · otherSEC filing ↗ | $0View disclosure → | |
TERTERADYNE, INC | Herweck PeterDIR | A · grantSEC filing ↗ | $0View disclosure → | |
TERTERADYNE, INC | Tufano Paul JDIR | J · otherSEC filing ↗ | $0View disclosure → | |
TERTERADYNE, INC | Tufano Paul JDIR | A · grantSEC filing ↗ | $0View disclosure → | |
TERTERADYNE, INC | Maddock Ernest EDIR | J · otherSEC filing ↗ | $0View disclosure → | |
TERTERADYNE, INC | Henry Andrew ChisholmDIR | A · grantSEC filing ↗ | $0View disclosure → |
Filing-only signals
Deterministic matches in the selected period
Filing detail checks
Secondary metrics for the selected periodTransaction codes
By Form 4 transaction code in selected period7transactionstxns
- A · Grants / awards · dominant3 · 43%
- J · Other3 · 43%
- S · Open-market sells1 · 14%
Activity by reported role
A joint filing can contribute to multiple rolesDirector7
Reported Holdings After
Separated by insider, security, and ownership type
Tufano Paul JCommon Stock · Direct
66,008Sep 25, 2026
Herweck PeterCommon Stock · Direct
16,282Sep 25, 2026
Henry Andrew ChisholmCommon Stock · Direct
2,991Sep 24, 2026
Maddock Ernest ECommon Stock · Direct
10,269Sep 25, 2026
Johnson MercedesCommon Stock · Direct
6,197Oct 01, 2026
These are reported post-transaction holdings, not company-wide ownership percentages. Securities, indirect vehicles, and amendments are kept separate.
Filing activity heatmap
Current transaction page only · each cell is a filing date · buys green, sells redSep 19 → Oct 19
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TERADYNE, INC Insider Activity FAQ
SEC Form 4 contextWho recently reported transactions at TERADYNE, INC?
JOHNSON MERCEDES, Herweck Peter, TUFANO PAUL J, MADDOCK ERNEST E, Henry Andrew Chisholm.
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 Oct 01, 2026 valued at $67.2k. Read the SEC filing.
What is the recent purchase and sale balance?
Net open-market selling in the selected period was $67,284.30. 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.