// company-profile
Teradyne, Inc
TERExchangeNasdaqSectorInstruments For Meas & Testing of Electricity & Elec SignalsInc.MAFilings205Insiders23
// api This Teradyne, Inc insider-trading data is served live by the Form4API insider trading API. Get the same data via API.
// activity-summary
Recent insider activity is bearish. Over the last 30 days, insiders net sold $167K across 2 transactions.
// 90-day insight
Over the last 90 days, Teradyne, Inc insiders bought $0 (11 transactions) and sold $1.1M (5 transactions).
- Most active insider: Poulin Shannon John with 6 transactions totaling $1.7M.
- Largest single sale: $2.9M by Smith Gregory Stephen on May 15, 2026.
- 71% of recent sales were pre-scheduled 10b5-1 trades — typically less informative than open-market activity.
Activity skews bullish — buys outpace sales.
Institutional Ownership
Top 13F-HR holders of Teradyne, Inc as of 2026-03-31
Total reported AUM
$37.66B
QoQ change
+49.8%
Reporting period
2026-03-31
#1
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
$3.02B
10.2M shares
#2
BlackRock, Inc.
CIK 2012383
$2.35B
7.9M shares
#3
STATE STREET CORP
CIK 93751
$2.07B
7.0M shares
Data source: SEC Form 13F-HR filings. Joined with insider activity above — see who's loading up institutionally while insiders are trading. Full 13F-HR API →
Insider Transactions
Sourced from SEC EDGAR Form 4 filings. Updated hourly.
| Date | Insider | Company | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Jun 15, 2026 | Smith Gregory Stephen | TER | Sale10b5 | 4,000 | $423.03 | $1.69M |
| Jun 15, 2026 | MATZ MARILYN | TER | Sale10b5 | 1,200 | $423.03 | $508K |
| Jun 12, 2026 | Herweck Peter | TER | J | 4 | $0.00 | $0K |
| Jun 12, 2026 | TUFANO PAUL J | TER | J | 19 | $0.00 | $0K |
| Jun 12, 2026 | MADDOCK ERNEST E | TER | J | 2 | $0.00 | $0K |
45 more transactions hidden
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