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Insider activity — TERTERADYNE, INC

18 Form 4 filings for TER between 2026-07-16 and 2026-11-03, from 7 filers. 14 discretionary (14 sales, 0 purchases), 4 routine grant or withholding filings. 14 of 18 carry a dollar total (9 stated, 5 computed as shares × price), summing to $7,832,441; a multi-transaction filing without a stated total contributes only its largest transaction, so the sum is a floor and the true figure is higher. Prices ran $275 to $425.

Filings 18 Filers 7 Discretionary 14 Routine 4 Structured 13/18

Filers
▸JOHNSON MERCEDESDirector 2026-11-03 · sold 166 @ $275.44 for $45,723 TOTAL SOLD ≥ $170,00410b5-1 ×44 filings
FiledActionShares
largest txn
PriceFiling totalTxnsSEC
2026-11-03 sold 10b5-1 PLAN 166 $275.44 $45,723 1 RECEIPT ↗
2026-10-02 sold 10b5-1 PLAN 167 $402.90 $67,284 1 RECEIPT ↗
2026-09-02 sold 10b5-1 PLAN 167 $341.30 $56,997 1 RECEIPT ↗
2026-08-04 sold 10b5-1 PLAN 166 $358.15 $59,453 — RECEIPT ↗
▸MATZ MARILYNDirector 2026-10-22 · sold 400 @ $350.00 for $140,000 TOTAL SOLD ≥ $823,73210b5-1 ×66 filings
FiledActionShares
largest txn
PriceFiling totalTxnsSEC
2026-10-22 sold 10b5-1 PLAN 400 $350.00 $140,000 1 RECEIPT ↗
2026-10-19 sold 10b5-1 PLAN 800 $341.28 $273,024 1 RECEIPT ↗
2026-09-18 sold 10b5-1 PLAN 400 $351.11 $140,444 1 RECEIPT ↗
2026-09-16 sold 10b5-1 PLAN 800 $337.83 $270,264 1 RECEIPT ↗
2026-08-18 sold 10b5-1 PLAN 1,200 $425.00 $510,000 — RECEIPT ↗
2026-07-16 sold 10b5-1 PLAN 1,200 $356.31 $427,572 — RECEIPT ↗
▸Smith Gregory StephenPresident and CEO 2026-10-19 · sold 4,000 @ $341.28 for $1,365,120 TOTAL SOLD ≥ $2,716,44010b5-1 ×44 filings
FiledActionShares
largest txn
PriceFiling totalTxnsSEC
2026-10-19 sold 10b5-1 PLAN 4,000 $341.28 $1,365,120 1 RECEIPT ↗
2026-09-16 sold 10b5-1 PLAN 4,000 $337.83 $1,351,320 1 RECEIPT ↗
2026-08-18 sold 10b5-1 PLAN 4,000 $425.00 $1,700,000 — RECEIPT ↗
2026-07-16 sold 10b5-1 PLAN 4,000 $356.31 $1,425,240 — RECEIPT ↗
▸Herweck PeterDirector 2026-09-28 · received (award/grant) 77 1 filing
FiledActionShares
largest txn
PriceFiling totalTxnsSEC
2026-09-28 received (award/grant) 77 — — 2 RECEIPT ↗
▸TUFANO PAUL JDirector 2026-09-28 · received (award/grant) 141 1 filing
FiledActionShares
largest txn
PriceFiling totalTxnsSEC
2026-09-28 received (award/grant) 141 — — 2 RECEIPT ↗
▸MADDOCK ERNEST EDirector 2026-09-28 · J 2 1 filing
FiledActionShares
largest txn
PriceFiling totalTxnsSEC
2026-09-28 J 2 — — 1 RECEIPT ↗
▸Henry Andrew ChisholmDirector 2026-09-28 · received (award/grant) 64 1 filing
FiledActionShares
largest txn
PriceFiling totalTxnsSEC
2026-09-28 received (award/grant) 64 — — 1 RECEIPT ↗

7 filers · 18 filings · disclosed filing totals sum to $7,832,441 (9/18 state one, 5 computed; totals are proceeds with a floor, never profit — a Form 4 states what was traded, not what it cost the filer)

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