Insider Cluster (2 insiders) ·Filed Mar 2, 2026
Insider cluster: 2 insiders, $1K total
Actionable Insight • Neutral
The selling is de minimis in dollar value and likely reflects personal financial planning rather than negative sentiment. No actionable signal for traders.
Final — all horizons settled through T+60d
ATRA ▲ +95.72% at T+60d
NEUTRAL call ✓ call won +95.72% · α vs SPY +86.40% · entry $4.91 → $9.61
T+1d
+10.39%
call +10.39% · α +11.30%
$5.42
settled 7mo ago
T+5d
+36.05%
call +36.05% · α +37.26%
$6.68
settled 7mo ago
T+20d
-12.02%
call -12.02% · α -4.08%
$4.32
settled 6mo ago
T+60d
+95.72%
call +95.72% · α +86.40%
$9.61
settled 4mo ago
Price Chart
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Executive Summary
Two insiders at Atara Biotherapeutics sold shares in the past week, including CEO AnhCo Nguyen who sold 198 shares for $1,005.64. The total value of the cluster is minimal at $1,127.49, representing less than 0.01% of the company's $39M market cap.
Key Financial Metrics
Direction
selling
Total Value
$1.1K
Insiders
2
Key Facts
- CEO AnhCo Nguyen sold 198 shares at $5.079, generating $1,005.64 in proceeds.
- Chief Accounting Officer Grant-Huerta Yanina sold 24 shares at $5.077, totaling $121.85.
- Both transactions were open-market sales (Form 4 codes S).
- Total dollar volume of insider selling in the past 7 days: $1,127.49.
- This represents less than 0.01% of ATRA's $39M market capitalization.
Financial Impact
$1,127 in total open-market sales by insiders
insider ownershipmarket sentiment
Risk Factors
- Minimal risk — transaction values are trivial relative to company size.
- Potential perception risk if small-cap investors overinterpret minor insider activity.
Market Snapshot
Exchange
Nasdaq
Investment Themes
Biotech & Drug Discovery
Documents Analyzed
This report is based on 1 SEC document filed with EDGAR.
| Document | Accession Number |
|---|---|
| CONTEXT: Insider Cluster Data (2 trades, 7d window) | cluster-ATRA-1772659814380 |
9 reports for ATRA
Filters
Rows
| Type | Now | ||||
|---|---|---|---|---|---|
Jun 26, 2026 14w ago | 8-K | $11.17 $8.93 | ▼ −20.05% | ▼ −24.44% | $9.48 (−15.13%) |
Jun 15, 2026 15w ago | 3 | $9.62 $9.89 | ▲ +2.81% | ▲ +1.81% | $9.48 (−1.46%) |
May 7, 2026 21w ago | 8-K | $9.93 $8.55 | ▼ −13.90% | ▼ −17.73% | $9.48 (−4.53%) |
May 7, 2026 21w ago | Insider Cluster | $9.93 $8.55 | ▼ −13.90% | ▼ −17.73% | $9.48 (−4.53%) |
Apr 24, 2026 23w ago | DEFA14A | $4.99 $8.13 | ▲ +62.83% | ▲ +58.05% | $9.48 (+89.98%) |
Mar 17, 2026 28w ago | S-3 | $5.00 $10.46 | ▲ +109.20% | ▲ +97.67% | $9.48 (+89.60%) |
Mar 12, 2026 29w ago | 8-K | $6.90 $9.92 | ▲ +43.77% | ▲ +33.07% | $9.48 (+37.39%) |
Mar 3, 2026 30w ago | 8-K | $5.42 $10.54 | ▲ +94.46% | ▲ +84.15% | $9.48 (+74.91%) |
Mar 2, 2026 30w ago | Insider Cluster | $4.91 $9.61 | ▲ +95.72% | ▲ +86.40% | $9.48 (+93.08%) |
Showing 9 of 9
US Market Status
Market Closed — Opens Mon (64h 10m)
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