Grant-Huerta Yanina Insider Trading Activity
Grant-Huerta Yanina has been net-selling over the last 12 months with 0 purchases and 11 sales across 1 company.
ATRA is the most-traded position with 11 trades. The largest single transaction was a sale of ATRA for $22K on May 18, 2026.
Performance Scorecard
Forward stock performance after each transaction by Grant-Huerta Yanina. Buy returns measure price movement after open-market purchases; sell-avoided measures the loss avoided after open-market sales. Success rate counts trades where the insider's direction was right.
| PERIOD | AVG BUY RETURN | AVG SELL AVOIDED | SUCCESS RATE | TRADES |
|---|---|---|---|---|
| 30 days | — | -9.7% | 30% | 10 |
| 90 days | — | -19.9% | 30% | 10 |
| 120 days | — | +4.5% | 50% | 6 |
Performance based on stock price movement after each transaction date. Past results do not predict future returns. Not financial advice.
Price & Trades
Pro: Trade MarkersATRA · Atara Biotherapeutics, Inc.
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| DATE | TICKER | TYPE | SHARES | PRICE | VALUE | ROLE |
|---|---|---|---|---|---|---|
| May 18, 2026 | ATRA | Sell | 2,414 | $9.13 | $22K | Chief Accounting Officer |
| Mar 2, 2026 | ATRA | Sell | 24 | $5.08 | $121.848 | Chief Accounting Officer |
| Mar 2, 2026 | ATRA | Sell | 1,603 | $5.08 | $8K | Chief Accounting Officer |
| Mar 2, 2026 | ATRA | Sell | 377 | $5.08 | $2K | Chief Accounting Officer |
| Mar 2, 2026 | ATRA | Sell | 100 | $5.08 | $508.3 | Chief Accounting Officer |
| Nov 17, 2025 | ATRA | Sell | 1,645 | $13.19 | $22K | Chief Accounting Officer |
| Nov 17, 2025 | ATRA | Sell | 85 | $13.19 | $1K | Chief Accounting Officer |
| Nov 17, 2025 | ATRA | Sell | 74 | $13.19 | $976.134 | Chief Accounting Officer |
| Aug 18, 2025 | ATRA | Sell | 55 | $11.61 | $638.495 | Chief Accounting Officer |
| Aug 18, 2025 | ATRA | Sell | 86 | $11.61 | $998.718 | Chief Accounting Officer |
| Aug 18, 2025 | ATRA | Sell | 1,668 | $11.61 | $19K | Chief Accounting Officer |
Top Companies Traded
| TICKER | COMPANY | TRADES | TOTAL VOLUME |
|---|---|---|---|
| ATRA | Atara Biotherapeutics, Inc. | 11 | $78K |
Other insiders at Atara Biotherapeutics, Inc.
2 other tracked filers at ATRA.