ATRA
Atara Biotherapeutics Inc
$1.58M
Single buy
Discretionary Insider Activity
Date:
05/07/2026
Insiders:
Panacea Innovation Ltd, a 10%+ owner, and 1 others
Prior trend:
7 months of no clear discretionary insider activity

Summary

A $1.58M single buy for Atara Biotherapeutics Inc (ATRA) on 05/07/2026 after 7 months of no clear discretionary insider activity trend.

Reports

Action Amount Date Insider Role(s) SEC Filing No
Sell $3.17M 05/11/2026 Huang James Director, a 10%+ owner 0001193125-26-217380
Buy $4.74M 05/11/2026 EcoR1 Capital, LLC A 10%+ owner 0000935836-26-000239

Stake Changes

Action Insider Role(s) Total Change % Change
Panacea Innovation Ltd Director, a 10%+ owner unknown unknown
Buy EcoR1 Capital, LLC A 10%+ owner $4.74M 48.6%

Transactions

Action Amount Date Insider Security Type SEC Code
Sell $3.17M 05/07/2026 Huang James Common Stock Discretionary Sale
Buy $4.74M 05/07/2026 EcoR1 Capital, LLC Common Stock Discretionary Purchase

Stats

Prior max multiple:
3.2
Prior median multiple:
3.2

Metadata

Signal ID:
ZI4m62nmMme1IyT6
Scanned on:
05/11/2026
Status:
Current