MATZ MARILYN sold $428K of TER
MATZ MARILYN sold 1,200 shares of TERADYNE, INC (TER) at $356.31 ($0.43M total) on 2026-07-15 under a Rule 10b5-1 trading plan.
How this was made
The 30-second read
Why it matters
The newest fact is the disclosed sale size, price ($356.31/share), and that it was executed under a pre-arranged 10b5-1 plan.
Market read
Traders may note the insider sale, but the 10b5-1 structure and lack of additional fundamental information suggest limited trading edge.
What to watch
The article does not state whether the director’s sale was part of a larger series, nor does it provide context on total holdings changes beyond the post-transaction share count.
Background
The article is a SEC Form 4 insider transaction disclosure for Teradyne, Inc.
Ticker impact
Teradyne director MatZ Marilyn sold 1,200 shares in an open-market transaction on 2026-07-15 under a pre-arranged 10b5-1 plan.
Likely minimal impact on TER price; any effect is more sentiment/flow-related than fundamental.
The filing is a Form 4 insider transaction, but it specifies an open-market sale and a pre-arranged 10b5-1 plan, which typically reduces interpretive value versus discretionary selling.
Market effects
No sector read-across is provided; this is company-specific insider activity only.
None indicated.
None indicated.
Counterpoint
Even with a 10b5-1 plan, repeated insider selling can coincide with management’s view of valuation or liquidity needs, which some traders may still treat as mildly bearish.
Key entities
- issuerTERADYNE, INC
Company whose director disclosed an open-market sale of shares via Form 4.
- insiderMATZ MARILYN
Director who sold 1,200 shares on 2026-07-15 under a 10b5-1 plan.



