DEFA14A ·Filed Apr 24, 2026

ATRA

Atara Biotherapeutics, Inc.
NEUTRAL
Impact 3/10
Horizonimmediate Processed5mo ago SEC0001193125-26-177280
Proxy solicitation materials
Actionable Insight • Neutral

Monitor the vote results for the equity incentive plan increase, as approval could lead to share dilution. The other proposals are standard governance items unlikely to impact operations.

DirectionNeutral
Confidencehigh
Horizonimmediate
Final — all horizons settled through T+60d
ATRA ▲ +62.83% at T+60d
NEUTRAL call ✓ call won +62.83% · α vs SPY +58.05% · entry $4.99 → $8.13
Entry anchored
Apr 24, 03:24 PM ET
via exchange tick
T+1d
-5.21%
call -5.21% · α -4.73%
$4.73
settled 5mo ago
T+5d
-2.20%
call -2.20% · α -2.60%
$4.88
settled 5mo ago
T+20d
+92.59%
call +92.59% · α +87.63%
$9.61
settled 4mo ago
T+60d
+62.83%
call +62.83% · α +58.05%
$8.13
settled 2mo ago

Price Chart

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Executive Summary

Atara Biotherapeutics is holding its 2026 annual meeting to vote on four key proposals: electing two directors, approving executive compensation, increasing shares in its equity incentive plan by 400,000, and ratifying Deloitte & Touche as its auditor. The filing is a routine proxy statement from management.

Key Facts

  • Annual meeting to vote on director elections, executive compensation, equity plan increase, and auditor ratification
  • Management is soliciting votes for all proposals
  • No activist involvement or contested board seats
  • Routine annual corporate governance matters

Financial Impact

400,000 additional shares authorized in equity incentive plan

dilutionexecutive compensationgovernance

Risk Factors

  • Potential share dilution from the equity plan increase
  • Shareholder opposition to executive compensation

Market Snapshot

Exchange
Nasdaq
Sector
Biological Products, (No Diagnostic Substances)
Analyst Consensus
70% bullish (10 analysts)

Investment Themes

Biotech & Drug Discovery

Documents Analyzed

This report is based on 4 SEC documents filed with EDGAR.

DocumentAccession Number
DEFA14A Filing (Primary)0001193125-26-177280
Document: 0001193125-26-177280-index-headers.html0001193125-26-177280
Document: 0001193125-26-177280-index.html0001193125-26-177280
Document: 0001193125-26-177280.txt0001193125-26-177280
9 reports for ATRA
Performance horizon
Filters
Rows
Reports for ATRA — sortable, filterable
TypeNow
Jun 26, 2026
14w ago
8-K
NEUTRAL ★ 3/10
$11.17 $8.93▼ −20.05%▼ −24.44%$9.48 (−15.13%)
Jun 15, 2026
15w ago
3
NEUTRAL ★ 2/10
$9.62 $9.89▲ +2.81%▲ +1.81%$9.48 (−1.46%)
May 7, 2026
21w ago
8-K
NEUTRAL ★ 4/10
$9.93 $8.55▼ −13.90%▼ −17.73%$9.48 (−4.53%)
May 7, 2026
21w ago
Insider Cluster
MIXED ★ 5/10
$9.93 $8.55▼ −13.90%▼ −17.73%$9.48 (−4.53%)
Apr 24, 2026
23w ago
DEFA14A
NEUTRAL ★ 3/10
$4.99 $8.13▲ +62.83%▲ +58.05%$9.48 (+89.98%)
Mar 17, 2026
28w ago
S-3
NEUTRAL ★ 4/10
$5.00 $10.46▲ +109.20%▲ +97.67%$9.48 (+89.60%)
Mar 12, 2026
29w ago
8-K
NEUTRAL ★ 5/10
$6.90 $9.92▲ +43.77%▲ +33.07%$9.48 (+37.39%)
Mar 3, 2026
30w ago
8-K
MIXED ★ 6/10
$5.42 $10.54▲ +94.46%▲ +84.15%$9.48 (+74.91%)
Mar 2, 2026
30w ago
Insider Cluster
NEUTRAL ★ 2/10
$4.91 $9.61▲ +95.72%▲ +86.40%$9.48 (+93.08%)
Showing 9 of 9

US Market Status

Market Closed — Opens Mon (64h 59m)

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