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Atara Biotherapeutics, Inc. (NASDAQ:ATRA)

US · Delayed Price · Currency is USD
8.59-0.84 (-8.91%)
 
Market Cap86.22M-44.9%
Revenue (ttm)6.19M-96.7%
Net Income-16.69M-388.0%
EPS-1.18-174.4%
Shares Out10.04M
PE Ration/a
Forward PE9.13
Dividendn/a
Ex-Dividend Daten/a
Volume24,266
Open9.18
Previous Close9.43
Day's Range8.49 - 9.37
52-Week Range3.92 - 19.15
Beta0.09
AnalystsHold
Price Target13.00(+51.34%)
Earnings DateNov 11, 2026
-8.70% (1D)
No price history available.
Insider Score
/ 100
ATRA Insider Score

Atara Biotherapeutics, Inc. has a live Insider Score.

Scored on 1 qualifying trade from 1 insider in the last 90 days.

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About ATRA

Founded in 2012 and headquartered in South San Francisco, California, Atara Biotherapeutics, Inc. is dedicated to pioneering ready-to-use (off-the-shelf) T-cell immunotherapies. Their primary focus in the United States involves creating treatments for patients battling cancer, autoimmune disorders, and viral infections. A key therapeutic candidate, tabelecleucel, is currently undergoing Phase 3 clinical trials for Epstein-Barr virus (EBV)-driven post-transplant lymphoproliferative disease, as well as various hematologic and solid tumors, such as nasopharyngeal carcinoma. The company is also advancing a robust pipeline of next-generation CAR T immunotherapies designed to combat hematologic malignancies and solid tumors. This includes ATA2271 and ATA3271 targeting mesothelin, alongside ATA2431 and ATA3219 for B-cell malignancies. Furthermore, Atara is developing ATA188 for the treatment of multiple sclerosis and the ATA368 program specifically for cancers associated with human papillomavirus (HPV). To bolster its research and development efforts, Atara Biotherapeutics has established significant collaborations and licensing agreements. These include a licensing partnership with Memorial Sloan Kettering Cancer Center, a license and R&D collaboration with QIMR Berghofer Medical Research Institute, and a strategic alliance with H. Lee Moffitt Cancer Center. Additionally, the company holds a strategic partnership with Bayer AG focused on mesothelin-targeted CAR T-cell therapies for solid tumors.

Address
1280 Rancho Conejo Blvd, Thousand Oaks, CA, 91320, US
Market Cap
86 million
Employees
10
Industrial Classification
Biotechnology

What Are Insiders Doing?

Open-market buy / sell balanceBalanced
Sold
$3.85M
Bought
$5.74M

View the trades behind this meter — each links to its SEC Form 4 →

Open-market Form 4 purchases (code P) vs sales (code S) on file for this company. Grants, option exercises and tax withholdings are excluded. Informational only.

1 Day
-8.91%
5 Days
-4.87%
1 Month
-2.50%
6 Months
+71.46%
1 Year
-44.90%

$ATRA stock is featured in our Insider Score Rankings, and Insider Trades datasets.

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Recently reported changes in ATRA holdings by institutional investors

Scanning latest 13F filings…

Latest 0 13F filings · Source: SEC EDGAR

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Insider Trading

Quarterly net insider trading by ATRA's directors and management

Net Shares Purchased by Insiders−200k−100k02025Q42026Q12026Q22026Q32026Q4

Source: SEC EDGAR (Form 4)

Corporate Lobbying

ATRA Estimated quarterly lobbying spending

Source: U.S. Senate LDA

U.S. Patents

New ATRA patent grants

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Source: USPTO Open Data Portal

Government Contracts

Estimated quarterly amount awarded to ATRA from public contracts

Source: USAspending.gov

Top ETF Holders

ETFs with the largest estimated holdings in ATRA

ETFEst. Holding Size
VTIVanguard Morningstar Total Stock Market ETF$1.35M
CNCRLoncar Cancer Immunotherapy ETF$885.58K
VXFVanguard Extended Market ETF$703.44K
IWCiShares Micro-Cap ETF$160.14K
BUSMEA Series Trust - EA Bridgeway Ultra-Small Company Market ETF$130.00K
DFASDimensional - US Small Cap ETF$1.27K

Estimated from each fund’s disclosed top holdings × AUM

ATRA Insider Score

Our composite score: insider buying, sector, volume, tone & dilution

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Bull Case vs Bear Case

AI-generated from ATRA’s recent data — informational, not investment advice

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Insider Score

Our 0–100 Insider Score and the signals behind it.

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Recent Insider Activity

Buys
2
Sells
18
Buy Value
$5.74M
Distinct Buyers
2

Frequently Asked Questions

Disclaimer — Informational only — not investment advice. Insider transaction data is sourced from SEC Form 4 filings; market data from public feeds and may be delayed. The Insider Score is a proprietary score for research purposes and does not predict future performance. Always do your own research.
Atara Biotherapeutics, Inc. (ATRA) Insider Trading, Form 4 Buys & Sells | InsiderBuying.com