This is a routine initial ownership filing with no trading signal. Monitor future Form 4 filings for any open-market purchases or sales by Cherry that could indicate insider conviction.
Price Chart
Executive Summary
Brian N. Cherry filed a Form 3 initial statement of beneficial ownership, reporting 38,320 shares of Atara Biotherapeutics common stock. This is a routine insider filing required upon becoming a Section 16 reporting person and conveys no material new information about the company's operations or financial condition.
Key Facts
- Brian N. Cherry filed Form 3 as a new Section 16 reporting person of Atara Biotherapeutics, Inc.
- Cherry reported beneficial ownership of 38,320 shares of common stock.
- The filing includes a power of attorney authorizing Yanina Grant-Huerta and John Chao to execute Section 16 filings on his behalf.
- The filing date is June 15, 2026, with a period of report of June 11, 2026.
Financial Impact
No financial impact; the filing discloses an insider's initial beneficial ownership of 38,320 shares, with no transaction or material change to the company's financials.
Risk Factors
- No material risks identified from this filing.
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 4 SEC documents filed with EDGAR.
| Document | Accession Number |
|---|---|
| 3 Filing (Primary) | 0000905148-26-002950 |
| Document: 0000905148-26-002950-index-headers.html | 0000905148-26-002950 |
| Document: 0000905148-26-002950-index.html | 0000905148-26-002950 |
| Document: 0000905148-26-002950.txt | 0000905148-26-002950 |
Filters
| 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%) |
US Market Status
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