Atara Biotherapeutics, Inc.
ATRACIK 0001604464 · Every Form 4 filed by insiders at this issuer. See financials →
Annual report (10-K)
Latest 10-K filed Mar 16, 2026. Sentiment + YoY language diff vs prior year. Read sections →
Signal:Mild negative shiftFull-doc fallback
Full filing:tone -0.0138Δ-0.001094% similar+534/-537 ¶
Sentiment via Loughran-McDonald lexicon · YoY diff via Jaccard similarity + paragraph set difference.
Recent 8-K announcements
Per-item disclosure feed. Item 2.02 is the earnings release.
Top insiders
Most active reporters at Atara Biotherapeutics, Inc.
| Name | Roles | Filings |
|---|---|---|
| Nguyen Anhco | OfficerDirector | 15 |
| Touchon Pascal | OfficerDirector | 15 |
| Hyllengren Eric J | Officer | 11 |
| Murugan Amar | Officer | 11 |
| Henrich Jill | Officer | 8 |
Showing 1-5 of 26
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Top performers
Insiders ranked by realized 90-day signed return on their open-market trades at Atara Biotherapeutics, Inc.. Minimum 3 scored trades. Returns are signed - a sale followed by a rally counts against the insider.
| # | Insider | Trades | Win rate | Avg | Median | Best | Worst |
|---|---|---|---|---|---|---|---|
| 1 | Dupont Jakob | 5 | 100% | +43.8% | +49.1% | +66.7% | +4.5% |
| 2 | Koppikar Utpal | 8 | 100% | +37.5% | +47.3% | +62.4% | +4.5% |
| 3 | Joshi Manher | 3 | 67% | +32.9% | +79.4% | +79.4% | -60.1% |
| 4 | Huang James | 3 | 100% | +27.7% | +16.8% | +57.4% | +9.0% |
| 5 | Panacea Innovation Ltd | 3 | 100% | +27.7% | +16.8% | +57.4% | +9.0% |
| 6 | Touchon Pascal | 13 | 77% | +13.8% | +23.0% | +79.4% | -82.2% |
| 7 | Murugan Amar | 15 | 73% | +6.6% | +5.3% | +79.4% | -82.2% |
| 8 | Hyllengren Eric J | 12 | 67% | +4.5% | +14.2% | +79.4% | -82.2% |
| 9 | Henrich Jill | 9 | 56% | +2.3% | +23.0% | +79.4% | -82.2% |
| 10 | Grant-Huerta Yanina | 11 | 27% | -33.5% | -14.1% | +65.7% | -113.0% |
All filings
120 Form 4 / 4-A filings, newest first
| Filed | Top transaction | Shares | Price | Value | ||
|---|---|---|---|---|---|---|