ATRA Insider Trading 2026
Atara Biotherapeutics Inc - Executive & director stock transactions
Net Sentiment
Neutral
Insider Buys
0
Insider Sells
0
Stock Price
$4.32
No recent insider trading activity for ATRA.
Get Full ATRA Analysis
Institutional ownership, financials, and AI insights
View Full AnalysisFrequently Asked Questions
Are insiders buying or selling ATRA?
Recent insider trading data for ATRA is being updated.
What is ATRA insider trading activity?
Check back for the latest ATRA insider trading activity.
Why do insiders buy ATRA stock?
Insiders (executives, directors, major shareholders) may buy ATRA stock because they believe it's undervalued or expect positive developments. Insider buying is often seen as a bullish signal since they have deep knowledge of the company.
Why do insiders sell ATRA stock?
Insiders may sell for various reasons including diversification, personal financial needs, or as part of planned 10b5-1 trading plans. Insider selling doesn't always indicate bearish sentiment - context matters.
What is the net insider activity for ATRA?
Net insider activity data for ATRA will be available when recent transactions are reported.
How do I track ATRA insider trades?
ATRA insider trades are disclosed through SEC Form 4 filings, which must be submitted within 2 business days of the transaction. This page automatically tracks and displays the latest Form 4 filings for Atara Biotherapeutics Inc.
What is a 10b5-1 trading plan for ATRA?
A 10b5-1 trading plan allows ATRA insiders to set up predetermined trading schedules when they don't have material non-public information. This protects executives from insider trading accusations while allowing them to diversify holdings.
Is ATRA insider buying a good sign?
ATRA insider buying can be a positive signal since executives know the company intimately. However, context matters - consider the size of purchases relative to their holdings, the number of insiders buying, and whether it's open market purchases versus options exercises.