Atara Biotherapeutics, Inc. (ATRA)

Price$9.76Cached quote
ATRANasdaq
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Financial charts

Net income

Total cash / debt

CashTotal debt

Financial statements

13 annual periodsNewest to oldest
2025202420232022202120202019201820172016201520142013
Revenue$120.8M$128.9M$8.6M$63.6M—————————
Research & development$37.4M$151.5M$224.8M$272.5M$282.0M$244.7M$216.1M$167.5M$81.2M$56.5M$41.6M$14.4M$4.3M
Operating expenses$84.9M$212.4M$284.6M$344.1M$360.8M$309.1M$295.7M$237.1M$121.5M$81.2M$58.4M$28.2M$8.6M
Operating income$35.9M−$83.4M−$276.0M−$280.5M−$340.5M−$309.1M−$295.7M−$237.1M−$121.5M−$81.2M−$58.4M−$28.2M−$8.6M
Operating margin29.69%−64.71%−3,219.48%−441.25%—————————
EBITDA$38.0M−$78.4M−$271.2M−$274.9M−$331.1M−$300.7M−$288.6M−$233.4M−$120.6M−$80.9M−$58.4M−$28.1M−$8.6M
EBITDA margin31.45%−60.79%−3,163.15%−432.35%—————————
Net income$32.7M−$85.4M−$276.1M−$228.3M−$340.1M−$306.6M−$291.0M−$230.7M−$119.5M−$79.0M−$57.2M−$28.0M−$8.8M
Net profit margin27.07%−66.23%−3,220.88%−359.12%—————————
Basic EPSper basic share$2.61-$11.41-$65.19-$56.00-$90.75-$103.75-$141.75-$131.75-$100.00-$68.75———
Diluted EPSper diluted share$2.57-$11.41-$65.19-$56.00-$90.75-$103.75-$141.75-$131.75-$100.00-$68.75———

Owners

Reported shareholders

Reference date Jun 30, 2026
EcoR1 Capital, LLC · 16.44% of listed sharesPanacea Innovation Ltd / Huang James · ≈13.97% of listed sharesCiongoli Gregory Austin · ≈12.93% of listed sharesADAGE CAPITAL PARTNERS GP, L.L.C. · 9.00% of listed sharesPoint72 Asset Management, L.P. · 7.28% of listed sharesRedmile Group, LLC · 4.68% of listed sharesVANGUARD CAPITAL MANAGEMENT LLC · 2.62% of listed sharesMACKENZIE FINANCIAL CORP · 2.47% of listed sharesNguyen AnhCo · ≈1.46% of listed sharesBlackRock, Inc. · 0.89% of listed sharesTouchon Pascal · ≈0.83% of listed sharesGEODE CAPITAL MANAGEMENT, LLC · 0.80% of listed sharesCherry Brian N · ≈0.66% of listed sharesHyllengren Eric J · ≈0.60% of listed sharesSTALEY CAPITAL ADVISERS INC · 0.53% of listed sharesGrant-Huerta Yanina · ≈0.53% of listed sharesVANGUARD FIDUCIARY TRUST CO · 0.46% of listed sharesACADIAN ASSET MANAGEMENT LLC · 0.41% of listed sharesHEIDEN WILLIAM K · ≈0.36% of listed shares
16.44%of listed shares
EcoR1 Capital, LLC1.55M shares · Jun 30, 2026
View holders
Top 20 reported holders of ATRA
Holder% owned
EcoR1 Capital, LLC
16.44%1.55M shares
Panacea Innovation Ltd / Huang James
≈13.97%1.32M shares
Ciongoli Gregory Austin
≈12.93%1.22M shares
ADAGE CAPITAL PARTNERS GP, L.L.C.
9.00%850K shares
Point72 Asset Management, L.P.
7.28%687.72K shares
Redmile Group, LLC
4.68%441.7K shares
VANGUARD CAPITAL MANAGEMENT LLC
2.62%247.05K shares
MACKENZIE FINANCIAL CORP
2.47%233.25K shares
Nguyen AnhCo
≈1.46%137.84K shares
BlackRock, Inc.
0.89%84.46K shares
Touchon Pascal
≈0.83%77.96K shares
GEODE CAPITAL MANAGEMENT, LLC
0.80%75.13K shares
Cherry Brian N
≈0.66%62.32K shares
Hyllengren Eric J
≈0.60%56.23K shares
STALEY CAPITAL ADVISERS INC
0.53%50K shares
Grant-Huerta Yanina
≈0.53%49.64K shares
VANGUARD FIDUCIARY TRUST CO
0.46%43.04K shares
ACADIAN ASSET MANAGEMENT LLC
0.41%38.85K shares
HEIDEN WILLIAM K
≈0.36%34.19K shares
Gallagher Carol Giltner
—33.01K shares

Percentages use 9.44M shares of this listed class outstanding on Jun 30, 2026. ≈ compares the latest reported holding with a share total from a different date; it is not a confirmed current stake.

Gray completes the 100% scale. Reported positions may overlap; holders have different reporting dates.

Source: SEC Form 13F ↗Updated Sep 29, 2026 · Quarterly data

Insider buys & sells

Jul 1, 2024–Jun 30, 2026
Buys3$5.60M disclosed value
Sells (SEC code S)43$4.04M disclosed value
46 recent transactions
TransactionInsiderTypeSharesPriceValueOwned after
May 18, 2026Form 4Nguyen AnhCoPresident and CEOSellCommon Stock5.2K$9.13$47.9K137.8K
May 18, 2026Form 4Grant-Huerta YaninaChief Accounting OfficerSellCommon Stock2.4K$9.13$22.0K49.6K
May 7, 2026Form 4Panacea Innovation Ltd +1TenPercentOwnerSellCommon Stock · indirect313.4K$10.10$3.17M1.01M
May 7, 2026Form 4EcoR1 Capital, LLCTenPercentOwnerBuyCommon Stock · indirect507.4K$9.35$4.74M1.55M
Mar 2, 2026Form 4Grant-Huerta YaninaChief Accounting OfficerSellCommon Stock100$5.08$508.0031.8K

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