Artiva Biotherapeutics
Develops cryopreserved allogeneic NK-cell candidates for autoimmune diseases and cancer.
$11.14
After-hours close+0.06 (+0.54%)
At close$11.08(−7.20%)
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Breakdown13F · Form 4
Institutions 34.43%16.83M sharesInsiders 41.45%20.27M sharesOther 24.12%11.79M shares
Shares outstanding 48.89M · Float 19.45M · 39.8% free float
Institutions13F, as of Mar 31, 2026
40 holders · 16.83M shares · 12 new positions · 15 increased · 12 reduced · 6 closed
| Holder | Shares | % outstanding | Chg q/q | Filed |
|---|---|---|---|---|
| Ra Capital Management, L.P. | 9.85M | 20.15% | 0 | May 15, 2026 |
| 5Am Venture Management, LLC | 2.35M | 4.81% | 0 | May 15, 2026 |
| VR Adviser, LLC | 1.61M | 3.29% | 0 | May 15, 2026 |
| Venbio Partners LLC | 531.3K | 1.09% | −117.2K | May 15, 2026 |
| Franklin Resources Inc | 520.3K | 1.06% | 0 | May 13, 2026 |
| Revelation Capital Management, LLC | 299.3K | 0.61% | 0 | May 15, 2026 |
| BlackRock, Inc. | 213.4K | 0.44% | +850 | May 13, 2026 |
| Vanguard Capital Management LLC | 207.7K | 0.42% | +207.7Knew | May 15, 2026 |
Beneficial owners13D/G · 5% or more, as filed
| Holder | % of class | Shares | Form | Filed |
|---|---|---|---|---|
| RA Capital Management, L.P.incl. RA Capital Healthcare Fund, L.P., Peter Kolchinsky +1 more | 37.90% | 18.42M | 13D | Jul 23, 2026 ↗ |
| GC Corpincl. Yong-Jun Huh, GC Cell Corporation | 12.30% | 6.00M | 13D | May 28, 2026 ↗ |
| Viking Global Investors LP | 5.40% | 2.60M | 13G | May 18, 2026 ↗ |
InsidersForm 4
| Insider | Role | Shares | % outstanding | Filed |
|---|---|---|---|---|
| Ra Capital Management, L.P. | director, 10 percent owner: | 17.33M | 35.45% | Jul 31, 2026 |
| GC Corp. | 10 percent owner | 6.00M | 12.27% | May 28, 2026 |
| Fred Aslan | director, officer: Chief Executive Officer | 1.54M | 3.14% | May 19, 2026 |
| Jennifer Bush | officer: COO, CLO, Compliance Officer | 337.9K | 0.69% | May 19, 2026 |
| Christopher Horan | officer: Chief Tech Operations Officer | 293.5K | 0.60% | May 19, 2026 |
| Thad Allen Huston | officer: Chief Financial Officer | 220.0K | 0.45% | Mar 10, 2026 |
| Heather Raymon | officer: SVP, Research and Development | 148.2K | 0.30% | May 19, 2026 |
| Subhashis Banerjee | officer: Chief Medical Officer | 145.0K | 0.30% | Aug 19, 2026 |
| Neha Krishnamohan | officer: Chief Financial Officer | 99.4K | 0.20% | Nov 17, 2025 |
| Thorsten Graef | officer: Chief Medical Officer | 80.0K | 0.16% | Feb 28, 2025 |
4 ten-percent owners hold 7.34M shares by Form 4 — the 13D/G table above shows those stakes, the figure above counts officers and directors only · 1 person has not refiled in the last 18 months (525.3K shares), so they are not in the figure above
Latest trades
| Date | Insider | Type | Shares | Avg price | Owned after |
|---|---|---|---|---|---|
| Aug 18, 2026 | Subhashis Banerjeeofficer: Chief Medical Officer | Sale | 429 | $12.00 | 144,963 |
| Jul 29, 2026 | Ra Capital Management, L.P.director, 10 percent owner: | Purchase | 20,824 | $9.99 | 17,304,626 |
| Jul 31, 2026 | Ra Capital Management, L.P.director, 10 percent owner: | Purchase | 24,944 | $9.93 | 17,329,570 |
| Jul 24, 2026 | Ra Capital Management, L.P.director, 10 percent owner: | Purchase | 41,319 | $9.99 | 17,283,802 |
| Jul 13, 2026 | Ra Capital Management, L.P.director, 10 percent owner: | Purchase · 2 lots | 13,074 | $8.94 | 16,817,573 |
| Jul 21, 2026 | Ra Capital Management, L.P.director, 10 percent owner: | Purchase | 120,582 | $9.55 | 17,098,479 |
| Jul 22, 2026 | Ra Capital Management, L.P.director, 10 percent owner: | Purchase | 84,124 | $9.93 | 17,182,603 |
| Jul 23, 2026 | Ra Capital Management, L.P.director, 10 percent owner: | Purchase | 59,880 | $9.96 | 17,242,483 |
| Jul 16, 2026 | Ra Capital Management, L.P.director, 10 percent owner: | Purchase | 152,472 | $8.93 | 16,970,045 |
| Jul 17, 2026 | Ra Capital Management, L.P.director, 10 percent owner: | Purchase | 7,882 | $8.95 | 16,977,927 |
CongressHouse and Senate disclosures
Not reported.