RA Capital Nexus Fund III, L.P.: insider buys
Every open-market stock purchase reported by RA Capital Nexus Fund III, L.P. to the SEC on Form 4.
Total bought$499.19M
Purchases3
Companies2
Last purchase filedJul 28, 2026
Return on these buys+26%
RA Capital Nexus Fund III, L.P. has made 3 open-market purchases worth $499.19M in 2 companies since May 13, 2026, according to SEC Form 4 filings. The most recent was filed on Jul 28, 2026: 41,319 shares of ARTV at $9.99 (Director), worth $412.78K. The largest was $423.77M of PBLS on Jun 11, 2026. Taken together, these purchases are up 26% at the latest closing prices (split-adjusted, weighted by amount).
Companies RA Capital Nexus Fund III, L.P. bought
| Ticker | Company | Role | Buys | Total | Since buy | Last filed |
|---|---|---|---|---|---|---|
| PBLS | Parabilis Medicines, Inc. | Director | 1 | $423.77M | +42% | Jun 15 |
| ARTV | Artiva Biotherapeutics, Inc. | Director | 2 | $75.41M | -64% | Jul 28 |
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| Filed | Stock | Insider | Value | Shares | Price | Since buy | Stake | Trade | |
|---|---|---|---|---|---|---|---|---|---|
| Jul 28 | ARTVArtiva Biotherapeutics, Inc. | RA Capital Nexus Fund III, L…Director | $412.78K | 41,319 | $9.99 | -58% | +0% | Jul 24 | SEC |
| Jun 15 | PBLSParabilis Medicines, Inc. | RA Capital Nexus Fund III, L…Director | $423.77M | 21,188,750 | $20.00 | +42% | — | Jun 11 | SEC |
| May 13 | ARTVArtiva Biotherapeutics, Inc. | RA Capital Nexus Fund III, L…Director | $75M | 6,510,416 | $11.52 | -64% | +75% | May 11 | SEC |