RA Capital Nexus Fund, L.P.
- SEC CIK
- 0001780117
In the past year, 11 open-market purchase filings worth $93.4M and 6 sale filings worth $60.4M.
Current role at each company
- CLYM Climb Bio, Inc.Directoras of Sep 30, 2026
- SION Sionna Therapeutics, Inc.Directoras of Sep 21, 2026
- TYRA Tyra Biosciences, Inc.Directoras of Sep 17, 2026
- ARTV Artiva Biotherapeutics, Inc.Directoras of Sep 14, 2026
- FRNM Freenome, Inc.Directoras of Jul 22, 2026
Show 7 more companies
- NKTX Nkarta, Inc.Directoras of Jun 11, 2026
- ETNB 89bio, Inc.Director, 10% Owneras of Nov 3, 2025
- VOR Vor Biopharma Inc.Directoras of Oct 22, 2025
- JBIO Jade Biosciences, Inc.Directoras of Jun 20, 2024
- SLDB Solid Biosciences Inc.Director, 10% Owneras of Jan 12, 2024
- BDTX Black Diamond Therapeutics, Inc.Directoras of Jul 7, 2023
- ICVX Icosavax, Inc.Director, 10% Owneras of Jun 8, 2023
Open-market trades in the past year
Open-market purchases (P) and sales (S) filed in the last 365 days, not counting derivative securities or duplicate filings. Values leave out price outliers.
- Bought
- $93.4M
- 11 filings
- Sold
- $60.4M
- 6 filings
- Net
- +$33.0M
- Bought minus sold
- Companies
- 4
- With open-market trades
Trades
Every Form 4 that lists RA Capital Nexus Fund, L.P. as a reporting owner, including filings made jointly with others, grouped by company. Each row adds up one type of transaction in one filing. Only open-market purchases (P) and sales (S) are shown by default.
SION Sionna Therapeutics, Inc.
Director5 trades
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Sep 21, 2026 (view filing)6:56 PM ET | Sep 17 | 4 days | RA Capital Healthcare Fund LP and 5 othersDirector | SSale | −3.45M | $6.33 | −$21.8M | −50.0%3.45M after | 2 lots |
| Nov 24, 2025 (view filing)5:43 PM ET | Nov 20-21 | 4 days | RA Capital Healthcare Fund LP and 5 othersDirector, 10% Owner | SSale | −30.3K | $39.61 | −$1.20M | −16.0%159.0K after | 12 lots |
| Nov 19, 2025 (view filing)8:43 PM ET | Nov 17-19 | 2 days | RA Capital Healthcare Fund LP and 5 othersDirector, 10% Owner | SSale | −136.4K | $40.34 | −$5.50M | −44.8%168.2K after | 24 lots |
| Oct 28, 2025 (view filing)9:05 PM ET | Oct 24-28 | 4 days | RA Capital Healthcare Fund LP and 5 othersDirector, 10% Owner | SSale | −373.6K | $39.51 | −$14.8M | −64.1%209.4K after | 8 lots |
| Feb 10, 2025 (view filing)5:04 PM ET | Feb 10 | Same day | RA Capital Healthcare Fund LP and 5 othersDirector, 10% Owner | PPurchase | +1.13M | $18.00 | +$20.3M | +93.8%2.32M after | 2 lots |
TYRA Tyra Biosciences, Inc.
Director6 trades
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Sep 17, 2026 (view filing)4:31 PM ET | Sep 15 | 2 days | RA Capital Healthcare Fund LP and 4 othersDirector, 10% Owner | PPurchase | +9.08M | $22.03 | +$200.0M | –11.6M after | Derivative |
| Jun 16, 2025 (view filing)8:06 PM ET | Jun 12-16 | 4 days | RA Capital Healthcare Fund LP and 4 othersDirector, 10% Owner | PPurchase | +163.3K | $10.19 | +$1.66M | +1.6%10.3M after | 3 lots |
| Jun 11, 2025 (view filing)7:44 PM ET | Jun 9 | 2 days | RA Capital Healthcare Fund LP and 4 othersDirector, 10% Owner | PPurchase | +186.8K | $10.19 | +$1.90M | +1.9%10.1M after | |
| Jun 6, 2025 (view filing)4:43 PM ET | Jun 4-5 | 2 days | RA Capital Healthcare Fund LP and 4 othersDirector, 10% Owner | PPurchase | +1.21M | $9.70 | +$11.8M | +13.9%9.91M after | 2 lots |
| Nov 13, 2024 (view filing)5:00 PM ET | Nov 8 | 5 days | RA Capital Healthcare Fund LP and 4 othersDirector, 10% Owner | PPurchase | +1.22M | $16.25 | +$19.8M | +16.3%8.70M after | |
| Sep 17, 2021 (view filing)4:34 PM ET | Sep 17 | Same day | RA Capital Healthcare Fund LP and 4 othersDirector, 10% Owner | PPurchase | +1.25M | $16.00 | +$20.0M | +30.9%5.30M after |
ARTV Artiva Biotherapeutics, Inc.
Director12 trades
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Jul 31, 2026 (view filing)5:13 PM ET | Jul 29-31 | 2 days | RA Capital Healthcare Fund LP and 5 othersDirector, 10% Owner | PPurchase | +45.8K | $9.96 | +$455.7K | +0.3%17.3M after | 2 lots |
| Jul 28, 2026 (view filing)5:24 PM ET | Jul 24 | 4 days | RA Capital Healthcare Fund LP and 5 othersDirector, 10% Owner | PPurchase | +41.3K | $9.99 | +$412.8K | +0.2%17.3M after | |
| Jul 23, 2026 (view filing)9:22 PM ET | Jul 21-23 | 2 days | RA Capital Healthcare Fund LP and 5 othersDirector, 10% Owner | PPurchase | +264.6K | $9.76 | +$2.58M | +1.6%17.2M after | 3 lots |
| Jul 23, 2026 (view filing)9:21 PM ET | Jul 13 | 10 days | RA Capital Healthcare Fund LP and 5 othersDirector, 10% Owner | PPurchase | +6.52K | $8.94 | +$58.3K | 0.0%16.8M after | Amended |
| Jul 20, 2026 (view filing)6:08 PM ET | Jul 16-17 | 4 days | RA Capital Healthcare Fund LP and 5 othersDirector, 10% Owner | PPurchase | +160.4K | $8.93 | +$1.43M | +1.0%17.0M after | 2 lots |
| Jul 14, 2026 (view filing)7:00 PM ET | Jul 10 | 4 days | RA Capital Healthcare Fund LP and 5 othersDirector, 10% Owner | PPurchase | +15.1K | $8.97 | +$135.5K | +0.1%16.8M after | From original |
| Jun 29, 2026 (view filing)4:20 PM ET | Jun 25-26 | 4 days | RA Capital Healthcare Fund LP and 5 othersDirector, 10% Owner | PPurchase | +32.9K | $8.89 | +$292.1K | +0.2%16.8M after | 2 lots |
| Jun 16, 2026 (view filing)6:08 PM ET | Jun 12-16 | 4 days | RA Capital Healthcare Fund LP and 5 othersDirector, 10% Owner | PPurchase | +531.3K | $8.66 | +$4.60M | +3.3%16.8M after | 3 lots |
| Jun 11, 2026 (view filing)7:36 PM ET | Jun 9-11 | 2 days | RA Capital Healthcare Fund LP and 5 othersDirector, 10% Owner | PPurchase | +1.03M | $7.44 | +$7.65M | +6.8%16.2M after | 3 lots |
| May 13, 2026 (view filing)5:45 PM ET | May 11 | 2 days | RA Capital Healthcare Fund LP and 5 othersDirector, 10% Owner | PPurchase | +6.51M | $11.52 | +$75.0M | +74.9%15.2M after |
CLYM Climb Bio, Inc.
Director4 trades
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Jan 7, 2026 (view filing)4:55 PM ET | Jan 5 | 2 days | RA Capital Healthcare Fund LP and 6 othersDirector, 10% Owner | PPurchase | +7.11K | $3.50 | +$24.9K | +0.2%3.40M after | |
| Dec 15, 2025 (view filing)7:55 PM ET | Dec 11-12 | 4 days | RA Capital Healthcare Fund LP and 6 othersDirector, 10% Owner | PPurchase | +314.6K | $2.40 | +$754.7K | +10.2%3.40M after | 2 lots |
| Jul 1, 2024 (view filing)9:29 PM ET | Jun 27 | 4 days | RA Capital Healthcare Fund LP and 6 othersDirector, 10% Owner | PPurchase | +13.0M | $3.84 | +$50.0M | New position2.87M after | 2 lots |
| Aug 16, 2021 (view filing)4:47 PM ET | Aug 12 | 4 days | RA Capital Healthcare Fund LP and 5 othersDirector, 10% Owner | PPurchase | +3.20M | $12.50 | +$40.0M | New position483.7K after | 2 lots |
VOR Vor Biopharma Inc.
Director2 trades
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Oct 22, 2025 (view filing)7:48 PM ET | Oct 20-21 | 2 days | RA Capital Healthcare Fund LP and 4 othersDirector, 10% Owner | SSale | −117.0K | $29.34 | −$3.43M | −7.7%1.40M after | 5 lots |
| Oct 17, 2025 (view filing)6:03 PM ET | Oct 15-17 | 2 days | RA Capital Healthcare Fund LP and 4 othersDirector, 10% Owner | SSale | −464.0K | $29.54 | −$13.7M | −96.8%15.1K after | 16 lots |
ETNB 89bio, Inc.
Director, 10% Owner8 trades
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Feb 3, 2025 (view filing)5:38 PM ET | Jan 30 | 4 days | RA Capital Healthcare Fund LP and 4 othersDirector, 10% Owner | PPurchase | +5.71M | $8.75 | +$50.0M | +41.3%19.6M after | |
| Nov 18, 2024 (view filing)8:13 PM ET | Nov 14 | 4 days | RA Capital Healthcare Fund LP and 4 othersDirector, 10% Owner | PPurchase | +3.25M | $8.50 | +$27.6M | –4.33M after | Derivative |
| Mar 6, 2024 (view filing)5:40 PM ET | Mar 4 | 2 days | RA Capital Healthcare Fund LP and 4 othersDirector, 10% Owner | PPurchase | +1.35M | $15.35 | +$20.7M | +12.2%12.4M after | |
| Dec 13, 2023 (view filing)4:31 PM ET | Dec 11 | 2 days | RA Capital Healthcare Fund LP and 4 othersDirector, 10% Owner | PPurchase | +1.08M | $9.25 | +$10.0M | –1.08M after | Derivative |
| Mar 30, 2023 (view filing)5:00 PM ET | Mar 24 | 6 daysLate | RA Capital Healthcare Fund LP and 4 othersDirector, 10% Owner | PPurchase | +2.46M | $16.25 | +$40.0M | +28.6%11.1M after | |
| Oct 20, 2022 (view filing)5:28 PM ET | Oct 18 | 2 days | RA Capital Healthcare Fund LP and 4 othersDirector, 10% Owner | PPurchase | +1.17M | $7.65 | +$8.97M | +15.1%8.96M after | |
| Jul 6, 2022 (view filing)5:27 PM ET | Jul 1 | 5 days | RA Capital Healthcare Fund LP and 4 othersDirector, 10% Owner | PPurchase | +2.82M | $3.55 | +$10.0M | +56.7%7.78M after | |
| Jul 6, 2022 (view filing)5:27 PM ET | Jul 1 | 5 days | RA Capital Healthcare Fund LP and 4 othersDirector, 10% Owner | PPurchase | +1.41M | $0.002 | +$2.82K | –1.41M after | Derivative |
JBIO Jade Biosciences, Inc.
Director2 trades
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Jun 20, 2024 (view filing)5:56 PM ET | Jun 17 | 3 days | RA Capital Healthcare Fund LP and 4 othersDirector, 10% Owner | PPurchase | +928.1K | $1.67 | +$1.55M | +13.3%7.89M after | |
| Jul 6, 2021 (view filing)5:03 PM ET | Jul 2 | 4 days | RA Capital Healthcare Fund LP and 4 othersDirector, 10% Owner | PPurchase | +2.79M | $14.00 | +$39.0M | +66.6%6.97M after |
NKTX Nkarta, Inc.
Director3 trades
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Mar 29, 2024 (view filing)5:38 PM ET | Mar 27 | 2 days | RA Capital Healthcare Fund LP and 4 othersDirector, 10% Owner | PPurchase | +3.00M | $10.00 | +$30.0M | +42.5%10.1M after | |
| Mar 29, 2024 (view filing)5:38 PM ET | Mar 27 | 2 days | RA Capital Healthcare Fund LP and 4 othersDirector, 10% Owner | PPurchase | +3.00M | $10.00 | +$30.0M | –3.00M after | Derivative |
| Apr 28, 2022 (view filing)4:32 PM ET | Apr 26 | 2 days | RA Capital Healthcare Fund LP and 4 othersDirector, 10% Owner | PPurchase | +2.20M | $15.00 | +$33.0M | +39.2%7.81M after |
SLDB Solid Biosciences Inc.
Director, 10% Owner1 trade
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Jan 12, 2024 (view filing)5:01 PM ET | Jan 11 | 1 day | RA Capital Healthcare Fund LP and 4 othersDirector, 10% Owner | PPurchase | +904.2K | $5.53 | +$5.00M | +27.5%4.19M after |
BDTX Black Diamond Therapeutics, Inc.
Director1 trade
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Jul 7, 2023 (view filing)4:30 PM ET | Jul 5 | 2 days | RA Capital Healthcare Fund LP and 4 othersDirector | PPurchase | +935.9K | $5.00 | +$4.68M | +41.1%3.21M after |