RA Capital Nexus Fund III, L.P.
CIK 1883840
Transactions on file
106
Open-market buys
38
Win rate (buys)
34%
38 scored
Avg % since filing (buys)
-9.9%
Tickers traded
Recent activity
| Filed | Txn date | Issuer | Roles | Code | Shares | Value | % since Filing | Filing |
|---|---|---|---|---|---|---|---|---|
| 2026-11-03 | 2026-11-02 | BBTX Bambusa Therapeutics, Inc. | Director | Buy | 164,891 | $2.64M | -1.7% | open → |
| 2026-11-03 | 2026-11-02 | BBTX Bambusa Therapeutics, Inc. | Director | Buy | 2,335,109 | $37.36M | -1.7% | open → |
| 2026-11-03 | 2026-11-02 | BBTX Bambusa Therapeutics, Inc. | Director | C | 1,331,080 | $0.00 | — | open → |
| 2026-11-03 | 2026-11-02 | BBTX Bambusa Therapeutics, Inc. | Director | C | 3,144,858 | $0.00 | — | open → |
| 2026-11-03 | 2026-10-30 | BBTX Bambusa Therapeutics, Inc. | Director | Buy | 263,911 | $3.94M | +5.4% | open → |
| 2026-11-03 | 2026-10-30 | BBTX Bambusa Therapeutics, Inc. | Director | Buy | 189,909 | $2.70M | +10.5% | open → |
| 2026-09-30 | 2026-09-28 | CLYM Climb Bio, Inc. | Director | Exer. | 40,000 | $51.6K | +700.8% | open → |
| 2026-09-30 | 2026-09-28 | CLYM Climb Bio, Inc. | Director | Exer. | 10,000 | $78.9K | +30.9% | open → |
| 2026-09-30 | 2026-09-28 | CLYM Climb Bio, Inc. | Director | Exer. | 10,000 | $30.0K | +244.3% | open → |
| 2026-09-30 | 2026-09-28 | CLYM Climb Bio, Inc. | Director | Exer. | 10,000 | $34.6K | +198.6% | open → |
| 2026-09-21 | 2026-09-17 | SION Sionna Therapeutics, Inc. | Director | Sale | 33,800 | $252.1K | -44.4% | open → |
| 2026-09-21 | 2026-09-17 | SION Sionna Therapeutics, Inc. | Director | Sale | 3,415,011 | $21.58M | -34.3% | open → |
| 2026-08-14 | 2026-08-12 | SEPN Septerna, Inc. | Director | Sale | 746,500 | $31.73M | +14.9% | open → |
| 2026-08-14 | 2026-08-12 | SEPN Septerna, Inc. | Director | Sale | 746,500 | $31.73M | +14.9% | open → |
| 2026-07-31 | 2026-07-31 | ARTV Artiva Biotherapeutics, Inc. | Director | Buy | 24,944 | $247.7K | -58.2% | open → |
| 2026-07-31 | 2026-07-29 | ARTV Artiva Biotherapeutics, Inc. | Director | Buy | 20,824 | $208.0K | -58.5% | open → |
| 2026-07-28 | 2026-07-24 | ARTV Artiva Biotherapeutics, Inc. | Director | Buy | 41,319 | $412.8K | -58.5% | open → |
| 2026-07-24 | 2026-07-23 | ARTV Artiva Biotherapeutics, Inc. | Director | Buy | 59,880 | $596.4K | -58.3% | open → |
| 2026-07-24 | 2026-07-22 | ARTV Artiva Biotherapeutics, Inc. | Director | Buy | 84,124 | $835.4K | -58.2% | open → |
| 2026-07-24 | 2026-07-21 | ARTV Artiva Biotherapeutics, Inc. | Director | Buy | 120,582 | $1.15M | -56.5% | open → |
| 2026-07-24 | 2026-07-13 | ARTV Artiva Biotherapeutics, Inc. | Director | Buy | 6,522 | $58.3K | -53.6% | open → |
| 2026-07-22 | 2026-07-20 | FRNM Freenome, Inc. | Director | Grant | 336,965 | $3.37M | +63.2% | open → |
| 2026-07-22 | 2026-07-20 | FRNM Freenome, Inc. | Director | Grant | 4,918,411 | $49.18M | +63.2% | open → |
| 2026-07-22 | 2026-07-20 | FRNM Freenome, Inc. | Director | Grant | 367,427 | $0.00 | — | open → |
| 2026-07-22 | 2026-07-20 | FRNM Freenome, Inc. | Director | Grant | 908,103 | $0.00 | — | open → |
| 2026-07-22 | 2026-07-20 | FRNM Freenome, Inc. | Director | Grant | 553,703 | $0.00 | — | open → |
| 2026-07-22 | 2026-07-20 | FRNM Freenome, Inc. | Director | Grant | 970,950 | $0.00 | — | open → |
| 2026-07-22 | 2026-07-20 | FRNM Freenome, Inc. | Director | Grant | 6,561,711 | $0.00 | — | open → |
| 2026-07-22 | 2026-07-22 | PBLS Parabilis Medicines, Inc. | Director | Buy | 47,250 | $1.41M | +11.9% | open → |
| 2026-07-22 | 2026-07-21 | PBLS Parabilis Medicines, Inc. | Director | Buy | 37,723 | $1.13M | +11.0% | open → |
| 2026-07-22 | 2026-07-21 | PBLS Parabilis Medicines, Inc. | Director | Buy | 6,504 | $189.7K | +14.2% | open → |
| 2026-07-22 | 2026-07-21 | PBLS Parabilis Medicines, Inc. | Director | Buy | 21,696 | $606.6K | +19.1% | open → |
| 2026-07-22 | 2026-07-20 | PBLS Parabilis Medicines, Inc. | Director | Buy | 32,987 | $914.4K | +20.2% | open → |
| 2026-07-22 | 2026-07-20 | PBLS Parabilis Medicines, Inc. | Director | Buy | 98,433 | $2.67M | +22.8% | open → |
| 2026-07-20 | 2026-07-17 | ARTV Artiva Biotherapeutics, Inc. | Director | Buy | 7,882 | $70.5K | -53.6% | open → |
| 2026-07-20 | 2026-07-16 | ARTV Artiva Biotherapeutics, Inc. | Director | Buy | 152,472 | $1.36M | -53.5% | open → |
| 2026-07-14 | 2026-07-13 | ARTV Artiva Biotherapeutics, Inc. | Director | Buy | 6,552 | $58.6K | -53.6% | open → |
| 2026-07-14 | 2026-07-10 | ARTV Artiva Biotherapeutics, Inc. | Director | Buy | 15,102 | $135.5K | -53.7% | open → |
| 2026-06-29 | 2026-06-26 | ARTV Artiva Biotherapeutics, Inc. | Director | Buy | 1,876 | $16.8K | -53.8% | open → |
| 2026-06-29 | 2026-06-25 | ARTV Artiva Biotherapeutics, Inc. | Director | Buy | 31,000 | $275.3K | -53.3% | open → |
| 2026-06-16 | 2026-06-16 | ARTV Artiva Biotherapeutics, Inc. | Director | Buy | 124,893 | $1.11M | -53.3% | open → |
| 2026-06-16 | 2026-06-15 | ARTV Artiva Biotherapeutics, Inc. | Director | Buy | 15,414 | $138.6K | -53.8% | open → |
| 2026-06-16 | 2026-06-12 | ARTV Artiva Biotherapeutics, Inc. | Director | Buy | 391,019 | $3.35M | -51.6% | open → |
| 2026-06-15 | 2026-06-11 | PBLS Parabilis Medicines, Inc. | Director | Buy | 1,460,397 | $29.21M | +66.6% | open → |
| 2026-06-15 | 2026-06-11 | PBLS Parabilis Medicines, Inc. | Director | Buy | 19,728,353 | $394.57M | +66.6% | open → |
| 2026-06-15 | 2026-06-11 | PBLS Parabilis Medicines, Inc. | Director | C | 1,187,881 | $0.00 | — | open → |
| 2026-06-15 | 2026-06-11 | PBLS Parabilis Medicines, Inc. | Director | C | 6,556,740 | $0.00 | — | open → |
| 2026-06-11 | 2026-06-11 | ARTV Artiva Biotherapeutics, Inc. | Director | Buy | 548,580 | $4.34M | -47.5% | open → |
| 2026-06-11 | 2026-06-10 | ARTV Artiva Biotherapeutics, Inc. | Director | Buy | 103 | $721.00 | -40.7% | open → |
| 2026-06-11 | 2026-06-09 | ARTV Artiva Biotherapeutics, Inc. | Director | Buy | 479,039 | $3.31M | -39.9% | open → |
| 2026-05-13 | 2026-05-11 | ARTV Artiva Biotherapeutics, Inc. | Director | Buy | 6,510,416 | $75.00M | -64.0% | open → |
| 2025-02-10 | 2025-02-10 | SION Sionna Therapeutics, Inc. | Director | Buy | 102,414 | $1.84M | -76.9% | open → |
| 2025-02-10 | 2025-02-10 | SION Sionna Therapeutics, Inc. | Director | Buy | 1,022,586 | $18.41M | -76.9% | open → |
| 2025-02-10 | 2025-02-10 | SION Sionna Therapeutics, Inc. | Director | C | 179,975 | — | — | open → |
| 2025-02-10 | 2025-02-10 | SION Sionna Therapeutics, Inc. | Director | C | 2,222,084 | — | — | open → |
| 2025-02-10 | 2025-02-10 | SION Sionna Therapeutics, Inc. | Director | C | 5,021,990 | — | — | open → |
| 2025-02-10 | 2025-02-10 | SION Sionna Therapeutics, Inc. | Director | C | 527,444 | — | — | open → |
| 2025-03-17 | 2025-03-13 | MLYS Mineralys Therapeutics, Inc. | Director | Buy | 1,296,296 | $17.50M | +13.6% | open → |
| 2025-12-15 | 2025-12-12 | CLYM Climb Bio, Inc. | Director10% | Buy | 101,462 | $290.2K | +261.2% | open → |
| 2025-12-15 | 2025-12-11 | CLYM Climb Bio, Inc. | Director10% | Buy | 213,099 | $464.6K | +373.9% | open → |
| 2025-12-15 | 2025-12-11 | CLYM Climb Bio, Inc. | Director10% | Disp. | 20,440,000 | $0.00 | — | open → |
| 2025-11-24 | 2025-11-21 | SION Sionna Therapeutics, Inc. | Director | Sale | 7,609 | $300.6K | -89.5% | open → |
| 2025-11-24 | 2025-11-21 | SION Sionna Therapeutics, Inc. | Director | Sale | 6,440 | $254.4K | -89.5% | open → |
| 2025-11-24 | 2025-11-21 | SION Sionna Therapeutics, Inc. | Director | Sale | 9,924 | $392.0K | -89.5% | open → |
| 2025-11-24 | 2025-11-21 | SION Sionna Therapeutics, Inc. | Director | Sale | 1,210 | $47.8K | -89.5% | open → |
| 2025-11-24 | 2025-11-20 | SION Sionna Therapeutics, Inc. | Director | Sale | 604 | $24.5K | -89.8% | open → |
| 2025-11-24 | 2025-11-20 | SION Sionna Therapeutics, Inc. | Director | Sale | 512 | $20.7K | -89.8% | open → |
| 2025-11-24 | 2025-11-20 | SION Sionna Therapeutics, Inc. | Director | Sale | 788 | $31.9K | -89.8% | open → |
| 2025-11-24 | 2025-11-20 | SION Sionna Therapeutics, Inc. | Director | Sale | 96 | $3.9K | -89.8% | open → |
| 2025-11-24 | 2025-11-20 | SION Sionna Therapeutics, Inc. | Director | Sale | 947 | $37.8K | -89.6% | open → |
| 2025-11-24 | 2025-11-20 | SION Sionna Therapeutics, Inc. | Director | Sale | 801 | $32.0K | -89.6% | open → |
| 2025-11-24 | 2025-11-20 | SION Sionna Therapeutics, Inc. | Director | Sale | 1,235 | $49.3K | -89.6% | open → |
| 2025-11-24 | 2025-11-20 | SION Sionna Therapeutics, Inc. | Director | Sale | 150 | $6.0K | -89.6% | open → |
| 2025-11-19 | 2025-11-19 | SION Sionna Therapeutics, Inc. | Director | Sale | 9 | $365.49 | -89.8% | open → |
| 2025-11-19 | 2025-11-19 | SION Sionna Therapeutics, Inc. | Director | Sale | 8 | $324.88 | -89.8% | open → |
| 2025-11-19 | 2025-11-19 | SION Sionna Therapeutics, Inc. | Director | Sale | 12 | $487.32 | -89.8% | open → |
| 2025-11-19 | 2025-11-19 | SION Sionna Therapeutics, Inc. | Director | Sale | 2 | $81.22 | -89.8% | open → |
| 2025-11-19 | 2025-11-19 | SION Sionna Therapeutics, Inc. | Director | Sale | 14,325 | $573.1K | -89.6% | open → |
| 2025-11-19 | 2025-11-19 | SION Sionna Therapeutics, Inc. | Director | Sale | 12,126 | $485.2K | -89.6% | open → |
| 2025-11-19 | 2025-11-19 | SION Sionna Therapeutics, Inc. | Director | Sale | 18,684 | $747.5K | -89.6% | open → |
| 2025-11-19 | 2025-11-19 | SION Sionna Therapeutics, Inc. | Director | Sale | 2,276 | $91.1K | -89.6% | open → |
| 2025-11-19 | 2025-11-18 | SION Sionna Therapeutics, Inc. | Director | Sale | 2,092 | $82.8K | -89.5% | open → |
| 2025-11-19 | 2025-11-18 | SION Sionna Therapeutics, Inc. | Director | Sale | 1,770 | $70.0K | -89.5% | open → |
| 2025-11-19 | 2025-11-18 | SION Sionna Therapeutics, Inc. | Director | Sale | 2,728 | $107.9K | -89.5% | open → |
| 2025-11-19 | 2025-11-18 | SION Sionna Therapeutics, Inc. | Director | Sale | 332 | $13.1K | -89.5% | open → |
| 2025-11-19 | 2025-11-17 | SION Sionna Therapeutics, Inc. | Director | Sale | 331 | $13.9K | -90.1% | open → |
| 2025-11-19 | 2025-11-17 | SION Sionna Therapeutics, Inc. | Director | Sale | 280 | $11.8K | -90.1% | open → |
| 2025-11-19 | 2025-11-17 | SION Sionna Therapeutics, Inc. | Director | Sale | 433 | $18.2K | -90.1% | open → |
| 2025-11-19 | 2025-11-17 | SION Sionna Therapeutics, Inc. | Director | Sale | 53 | $2.2K | -90.1% | open → |
| 2025-11-19 | 2025-11-17 | SION Sionna Therapeutics, Inc. | Director | Sale | 10,707 | $439.5K | -89.9% | open → |
| 2025-11-19 | 2025-11-17 | SION Sionna Therapeutics, Inc. | Director | Sale | 9,063 | $372.0K | -89.9% | open → |
| 2025-11-19 | 2025-11-17 | SION Sionna Therapeutics, Inc. | Director | Sale | 13,964 | $573.2K | -89.9% | open → |
| 2025-11-19 | 2025-11-17 | SION Sionna Therapeutics, Inc. | Director | Sale | 1,701 | $69.8K | -89.9% | open → |
| 2025-11-19 | 2025-11-17 | SION Sionna Therapeutics, Inc. | Director | Sale | 13,734 | $552.1K | -89.7% | open → |
| 2025-11-19 | 2025-11-17 | SION Sionna Therapeutics, Inc. | Director | Sale | 11,626 | $467.4K | -89.7% | open → |
| 2025-11-19 | 2025-11-17 | SION Sionna Therapeutics, Inc. | Director | Sale | 17,913 | $720.1K | -89.7% | open → |
| 2025-11-19 | 2025-11-17 | SION Sionna Therapeutics, Inc. | Director | Sale | 2,182 | $87.7K | -89.7% | open → |
| 2025-10-28 | 2025-10-28 | SION Sionna Therapeutics, Inc. | Director | Sale | 10,476 | $414.6K | -89.5% | open → |
| 2025-10-28 | 2025-10-28 | SION Sionna Therapeutics, Inc. | Director | Sale | 17,118 | $677.5K | -89.5% | open → |
| 2025-10-28 | 2025-10-28 | SION Sionna Therapeutics, Inc. | Director | Sale | 31,392 | $1.24M | -89.5% | open → |
