SEC 13F Intelligence

ATRAGBXATARA BIOTHERAPEUTICS INC COM NEW

CUSIP 046513107 · Yahoo Finance ↗ · Google Finance ↗

Atara Biotherapeutics Inc Com New (ATRAGBX) has 1 institutional holders in Filings Flow’s 13F database, together reporting 28 shares worth $132 as of Q1 2026.

Institutional Holders
1
Q1 2026
Reported Value
$132
Ticker
ATRAGBX
Quarters Tracked
8

Ownership Trend

Institutional holders
Q4 ’18: 100Q4 ’18Q1 ’19: 101Q1 ’19Q2 ’19: 98Q2 ’19Q3 ’19: 93Q3 ’19Q2 ’21: 126Q2 ’21Q4 ’21: 121Q4 ’21Q4 ’22: 127Q4 ’22Q1 ’26: 1Q1 ’26filingsflow.com
Total reported value
Q4 ’18: $8.8BQ4 ’18Q1 ’19: $10.4BQ1 ’19Q2 ’19: $6.1BQ2 ’19Q3 ’19: $5.7BQ3 ’19Q2 ’21: $4.0BQ2 ’21Q4 ’21: $2.8BQ4 ’21Q4 ’22: $130MQ4 ’22Q1 ’26: $132Q1 ’26filingsflow.com

Holders

Mixed quarters
Export to Excel
Manager% of PortfolioValueSharesQuarter
PlanVest Financial, Inc$131M AUM0.00%$13228Q1 2026
Alexis Investment Partners, LLC$145M AUM0.00%$21515Q3 2025OLDER

Holdings are reported up to 45 days after quarter end. Share counts are as filed and not adjusted for stock splits.