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ATARA BIOTHER (ATRA)
NASDAQ
$9.64+$0.005 (+0.05%)
Price as of Jun 03, 2026 4:35 PM EDT- $94.7MMarket Cap
- 15.61%1-Year Change
- BiotechnologyIndustry
ATARA BIOTHER (ATRA)
$9.64+$0.005 (+0.05%)
Top Holders
Institutional
Mutual Funds
Holder | Ownership %
| Shares Held | Change (Shares, %) | Report Date |
|---|---|---|---|---|
WASATCH ADVISORS INC | 93.13% | 8.4M | +254,651 (+3.03%) | Dec 31, 2022 |
KPCB XV ASSOCIATES, LLC | 20.83% | 1.9M | 0 (0.00%) | Sep 30, 2022 |
EMINENCE CAPITAL LLC | 12.67% | 1.1M | +1.1M (+100.00%) | Dec 31, 2021 |
BLACKROCK FUND ADVISORS | 12.34% | 1.1M | +135,420 (+12.18%) | Dec 31, 2016 |
ANTIPODEAN ADVISORS LLC | 11.10% | 1.0M | 0 (0.00%) | Sep 30, 2023 |
NORGES BANK | 9.64% | 868,658 | +68,900 (+7.93%) | Dec 31, 2022 |
DEEP TRACK CAPITAL, LP | 8.32% | 750,000 | +750,000 (+100.00%) | Dec 31, 2021 |
Holder | Ownership %
| Shares Held | Change (Shares, %) | Report Date |
|---|---|---|---|---|
WASATCH FUNDS TRUST | 74.50% | 6.7M | 0 (0.00%) | Mar 31, 2026 |
SPDR SERIES TRUST | 62.88% | 5.7M | 0 (0.00%) | Jan 31, 2026 |
VANGUARD INDEX FUNDS | 45.19% | 4.1M | 0 (0.00%) | Mar 31, 2026 |
iSHARES TRUST | 39.39% | 3.5M | 0 (0.00%) | Feb 28, 2026 |
JPMORGAN TRUST II | 26.75% | 2.4M | 0 (0.00%) | Feb 28, 2026 |
Federated Hermes Equity Funds | 15.79% | 1.4M | 0 (0.00%) | Jan 31, 2026 |
COLUMBIA FUNDS SERIES TRUST I | 14.59% | 1.3M | 0 (0.00%) | Jan 31, 2026 |
Current Ownership Distribution
- Institutions965.0M (68.63%)
- Mutual Funds430.5M (30.62%)
- Insiders10.7M (0.76%)
- Other0 (0.00%)
Insider Transactions
- 0.76% (10.7M)Current InsiderOwnership (%, shares)
- 2Number of InsiderBuying (last 12 months)
- $22.6MAmount of InsiderBuying (last 12 months)
- 3Number of InsiderSelling (last 12 months)
- $14.8MAmount of InsiderSelling (last 12 months)
Insider Name & Title | Type | Date
| Transaction Value | Shares | Share Price | Shares After Transactions |
|---|---|---|---|---|---|---|
EcoR1 Capital, LLC | Buy | May 07, 2026 | $4.7M | 507,407 | $9.35 | 1.6M |
Panacea Innovation Ltd | Exempt | Mar 17, 2026 | $1.7M | 259,163 | $6.61 | 0 |
Panacea Innovation Ltd | Exempt | Mar 17, 2026 | $25.92 | 259,163 | $0.00 | 307,899 |
Panacea Innovation Ltd | In Kind | Mar 17, 2026 | $26.15 | 5 | $5.23 | 307,894 |
Nguyen AnhCo President and CEO | Award | Mar 09, 2026 | $0.00 | 81,100 | $0.00 | 143,078 |
Grant-Huerta Yanina Chief Accounting Officer | Award | Mar 09, 2026 | $0.00 | 20,300 | $0.00 | 52,050 |
Grant-Huerta Yanina Chief Accounting Officer | Sell | Mar 02, 2026 | $121.85 | 24 | $5.08 | 33,830 |
Nguyen AnhCo President and CEO | Sell | Mar 02, 2026 | $1,005.64 | 198 | $5.08 | 64,776 |
Grant-Huerta Yanina Chief Accounting Officer | Sell | Mar 02, 2026 | $8,144.84 | 1,603 | $5.08 | 32,227 |
Nguyen AnhCo President and CEO | Sell | Mar 02, 2026 | $294.64 | 58 | $5.08 | 64,718 |
Grant-Huerta Yanina Chief Accounting Officer | Sell | Mar 02, 2026 | $1,915.91 | 377 | $5.08 | 31,850 |
Nguyen AnhCo President and CEO | Sell | Mar 02, 2026 | $6,601.63 | 1,298 | $5.09 | 63,420 |
Grant-Huerta Yanina Chief Accounting Officer | Sell | Mar 02, 2026 | $508.30 | 100 | $5.08 | 31,750 |
Nguyen AnhCo President and CEO | Sell | Mar 02, 2026 | $7,335.45 | 1,442 | $5.09 | 61,978 |
Panacea Innovation Ltd | Sell | Jan 12, 2026 | $489,019.17 | 80,554 | $6.07 | 1.3M |
Nguyen AnhCo President and CEO | Sell | Nov 17, 2025 | $37,698.77 | 2,859 | $13.19 | 65,030 |
Nguyen AnhCo President and CEO | Sell | Nov 17, 2025 | $738.53 | 56 | $13.19 | 64,974 |
Grant-Huerta Yanina Chief Accounting Officer | Sell | Aug 18, 2025 | $638.50 | 55 | $11.61 | 37,012 |
Nguyen AnhCo President and CEO | Sell | Aug 18, 2025 | $661.94 | 57 | $11.61 | 70,790 |
Grant-Huerta Yanina Chief Accounting Officer | Sell | Aug 18, 2025 | $998.72 | 86 | $11.61 | 36,926 |
Nguyen AnhCo President and CEO | Sell | Aug 18, 2025 | $14,878.82 | 1,281 | $11.62 | 69,509 |
Grant-Huerta Yanina Chief Accounting Officer | Sell | Aug 18, 2025 | $19,372.15 | 1,668 | $11.61 | 35,258 |
Nguyen AnhCo President and CEO | Sell | Aug 18, 2025 | $18,819.54 | 1,620 | $11.62 | 67,889 |
Panacea Innovation Ltd | Buy | Jul 17, 2025 | $186,372.00 | 19,335 | $9.64 | 1.4M |
Fust Matthew K | Award | Jun 10, 2025 | $0.00 | 7,828 | $0.00 | 18,188 |
Roncarolo Maria Grazia | Award | Jun 10, 2025 | $0.00 | 7,828 | $0.00 | 17,368 |
MALLIK AMEET | Award | Jun 10, 2025 | $0.00 | 7,828 | $0.00 | 16,928 |
Gallagher Carol Giltner | Award | Jun 10, 2025 | $0.00 | 7,828 | $0.00 | 33,012 |
Nguyen AnhCo President and CEO | Sell | May 16, 2025 | $22,155.59 | 3,276 | $6.76 | 70,847 |
Grant-Huerta Yanina Chief Accounting Officer | Sell | May 16, 2025 | $15,000.33 | 2,218 | $6.76 | 37,067 |