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ATRA

INSIDER BUYINSIDER SELL

Atara Biotherapeutics, Inc.

Research: Finviz ↗·Perplexity ↗

No convergence signal this quarter — shown because tracked funds have filed 13D/G on this stock.

Days to cover (short int.)
7.3d↓-5.4%
as of 2026-09-15

News Summary

Negative

Atara's flagship tabelecleucel program faces significant regulatory uncertainty following a second FDA Complete Response Letter in January 2026, though a strengthened BLA resubmission in September 2026 has been accepted with priority review (PDUFA target January 10, 2027). Q2 2026 showed mixed results (EPS miss of $0.06, revenue beat) amid senior leadership transitions in accounting and board roles, reflecting operational instability during a critical regulatory inflection point.

Red flags

  • •Second FDA Complete Response Letter (January 2026) questioning adequacy of ALLELE study for accelerated approval
  • •Extended regulatory timeline with multiple resubmissions since July 2025, indicating significant FDA concerns
  • •EPS miss in Q2 2026 ($0.32 vs. consensus)
  • •Chief Accounting Officer departure (effective July 17, 2026) during pre-approval phase
  • •Minimal commercialization revenue ($630K in Q2) despite lead program in approval process
  • •Low cash position ($21M assets) with no clear path to profitability pending regulatory decision

Insider Activity

NameTitleTypeSharesPriceValueFiledSrc
Cherry Brian N—BUY104K$9.60$1.00M2026-09-04↗
Nguyen AnhCoPresident and CEOSELL5K$8.08$0.04M2026-08-17↗

Fund 13D/13G Filings (2)

Tracked funds' beneficial-ownership filings on this stock — disclosed within days of a position change, fresher than the quarterly 13F. Since Filing compares the stock to SPY from the filing date (shown for filings within the last 90 days).

FundForm∆ Shares% of ClassSince FilingFiledSrc
Point72SC 13G/A+161K7.6%
+16.1% vs SPY
+16.2% abs
2026-08-14↗
Point72SC 13GNEW6.2%
-5.5% vs SPY
-1.1% abs
2026-05-08↗