Insider trades › Ra Capital Management, L.P.
Ra Capital Management, L.P.
A corporate insider: an officer, director or owner of more than 10% of a company. Insiders report their trades to the SEC on Form 4The form insiders use to report each purchase or sale of their company's stock. It is due within two business days of the trade. · Last filing Nov 3, 2026
Companies
17
where this person reports as an insider
Open-market buys
30
among the latest 81 trades
Open-market sales
51
among the latest 81 trades
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Using 13F.ai, list Ra Capital Management, L.P.'s open-market buys and sells across companies in the last two years, with the Form 4 links.
Using 13F.ai, how did the stocks Ra Capital Management, L.P. bought perform after the purchase compared with the S&P 500?
Using 13F.ai, are other insiders at the same companies buying or selling at the same time as Ra Capital Management, L.P.?
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Buying and selling by quarter
Dollars bought and sold on the open market over the last two years.
Bought Sold
By trade date, using the shares and price reported for each trade. Stock grants, option exercises and shares withheld for tax are left out.
Roles
The companies where this person reports as an insider, and their position at each, most recent first.
| BBTX Bambusa Therapeutics, Inc. | Director, 10% owner | Nov 3, 2026 |
| LENZ LENZ Therapeutics, Inc. | Director, 10% owner | Nov 2, 2026 |
| SION Sionna Therapeutics, Inc. | Director, 10% owner | Sep 21, 2026 |
| PBLS Parabilis Medicines, Inc. | Director, 10% owner | Jul 22, 2026 |
| ARTV Artiva Biotherapeutics, Inc. | Director, 10% owner | Jun 29, 2026 |
| PEPG PepGen Inc. | Director, 10% owner | Jun 22, 2026 |
| HOWL Werewolf Therapeutics, Inc. | 10% owner | Jun 22, 2026 |
| COAG Hemab Therapeutics Holdings, Inc. | 10% owner | Jun 17, 2026 |
| PRLD Prelude Therapeutics Incorporated | 10% owner | Apr 28, 2026 |
| VOR Vor Biopharma Inc. | Director, 10% owner | Apr 21, 2026 |
| WVE Wave Life Sciences, Inc. | Director, 10% owner | Mar 30, 2026 |
| BCAX Bicara Therapeutics Inc. | Director, 10% owner | Mar 2, 2026 |
| EVMN Evommune, Inc. | Director, 10% owner | Nov 12, 2025 |
| MLYS Mineralys Therapeutics, Inc. | Director | Sep 8, 2025 |
| ACRV Acrivon Therapeutics, Inc. | Director, 10% owner | Jun 17, 2025 |
| TYRA Tyra Biosciences, Inc. | Director, 10% owner | Jun 16, 2025 |
| FDMT 4D Molecular Therapeutics, Inc. | 10% owner | Dec 10, 2024 |
Roles come from the filings themselves and can change over time.
Latest open-market trades
Purchases and sales at every company, most recent filing first.
| How the stock has done since the trade date, measured against the S&P 500 over the same days. It describes the stock, not the trader's actual gain or loss. | Filing | ||||||
|---|---|---|---|---|---|---|---|
| Nov 2, 2026 | BBTX Bambusa Therapeutics, Inc. | Buy | 164,891 | $16.00 | $2.6M | +0.3% | Form 4 ↗ |
| Nov 2, 2026 | BBTX Bambusa Therapeutics, Inc. | Buy | 2.34M | $16.00 | $37.4M | +0.3% | Form 4 ↗ |
| Oct 30, 2026 | BBTX Bambusa Therapeutics, Inc. | Buy | 263,911 | $14.92 | $3.9M | +7.5% | Form 4 ↗ |
| Oct 30, 2026 | BBTX Bambusa Therapeutics, Inc. | Buy | 189,909 | $14.23 | $2.7M | +7.5% | Form 4 ↗ |
| Oct 29, 2026 | LENZ LENZ Therapeutics, Inc. | Sale | 107,170 | $3.36 | $360.1K | +20.3% | Form 4 ↗ |
| Oct 29, 2026 | LENZ LENZ Therapeutics, Inc. | Sale | 2.16M | $3.36 | $7.3M | +20.3% | Form 4 ↗ |
| Oct 29, 2026 | LENZ LENZ Therapeutics, Inc. | Sale | 451,998 | $3.36 | $1.5M | +20.3% | Form 4 ↗ |
| Sep 17, 2026 | SION Sionna Therapeutics, Inc. | Sale | 33,800 | $7.46 | $252.1K | -52.5% | Form 4 ↗ |
| Sep 17, 2026 | SION Sionna Therapeutics, Inc. | Sale | 3.42M | $6.32 | $21.6M | -52.5% | Form 4 ↗ |
| Jul 22, 2026 | PBLS Parabilis Medicines, Inc. | Buy | 47,250 | $29.77 | $1.4M | -8.7% | Form 4 ↗ |
| Jul 21, 2026 | PBLS Parabilis Medicines, Inc. | Buy | 37,723 | $30.00 | $1.1M | -6.2% | Form 4 ↗ |
| Jul 21, 2026 | PBLS Parabilis Medicines, Inc. | Buy | 21,696 | $27.96 | $606.6K | -6.2% | Form 4 ↗ |
| Jul 21, 2026 | PBLS Parabilis Medicines, Inc. | Buy | 6,504 | $29.17 | $189.7K | -6.2% | Form 4 ↗ |
| Jul 20, 2026 | PBLS Parabilis Medicines, Inc. | Buy | 98,433 | $27.13 | $2.7M | +2.4% | Form 4 ↗ |
| Jul 20, 2026 | PBLS Parabilis Medicines, Inc. | Buy | 32,987 | $27.72 | $914.4K | +2.4% | Form 4 ↗ |
| Jun 26, 2026 | ARTV Artiva Biotherapeutics, Inc. | Buy | 1,876 | $8.98 | $16.8K | -61.8% | Form 4 ↗ |
| Jun 25, 2026 | ARTV Artiva Biotherapeutics, Inc. | Buy | 31,000 | $8.88 | $275.3K | -57.3% | Form 4 ↗ |
| Jun 17, 2026 | HOWL Werewolf Therapeutics, Inc. | Sale | 389,216 | $0.35 | $136.2K | +183.2% | Form 4 ↗ |
| Jun 17, 2026 | HOWL Werewolf Therapeutics, Inc. | Sale | 27,695 | $0.35 | $9,693 | +183.2% | Form 4 ↗ |
| Jun 16, 2026 | COAG Hemab Therapeutics Holdings, Inc. | Buy | 61,523 | $24.98 | $1.5M | +59.6% | Form 4 ↗ |
| Jun 15, 2026 | COAG Hemab Therapeutics Holdings, Inc. | Buy | 6,146 | $24.89 | $153.0K | +63.0% | Form 4 ↗ |
| Jun 16, 2026 | HOWL Werewolf Therapeutics, Inc. | Sale | 139,686 | $0.37 | $51.7K | +171.8% | Form 4 ↗ |
| Jun 16, 2026 | HOWL Werewolf Therapeutics, Inc. | Sale | 9,939 | $0.37 | $3,677 | +171.8% | Form 4 ↗ |
| Jun 15, 2026 | HOWL Werewolf Therapeutics, Inc. | Sale | 120,216 | $0.39 | $46.9K | +152.1% | Form 4 ↗ |
| Jun 15, 2026 | HOWL Werewolf Therapeutics, Inc. | Sale | 8,554 | $0.39 | $3,336 | +152.1% | Form 4 ↗ |
| Jun 12, 2026 | HOWL Werewolf Therapeutics, Inc. | Sale | 11,322 | $0.40 | $4,529 | +155.6% | Form 4 ↗ |
| Jun 12, 2026 | HOWL Werewolf Therapeutics, Inc. | Sale | 159,119 | $0.40 | $63.6K | +155.6% | Form 4 ↗ |
| May 20, 2026 | COAG Hemab Therapeutics Holdings, Inc. | Buy | 996 | $24.94 | $24.8K | +52.6% | Form 4 ↗ |
| May 19, 2026 | COAG Hemab Therapeutics Holdings, Inc. | Buy | 3,802 | $24.97 | $94.9K | +57.8% | Form 4 ↗ |
| May 12, 2026 | HOWL Werewolf Therapeutics, Inc. | Sale | 94,432 | $0.64 | $60.4K | +52.9% | Form 4 ↗ |
| May 12, 2026 | HOWL Werewolf Therapeutics, Inc. | Sale | 6,719 | $0.64 | $4,300 | +52.9% | Form 4 ↗ |
| May 11, 2026 | HOWL Werewolf Therapeutics, Inc. | Sale | 81,678 | $0.67 | $54.7K | +46.4% | Form 4 ↗ |
| May 11, 2026 | HOWL Werewolf Therapeutics, Inc. | Sale | 5,812 | $0.67 | $3,894 | +46.4% | Form 4 ↗ |
| May 8, 2026 | HOWL Werewolf Therapeutics, Inc. | Sale | 351,514 | $0.71 | $249.6K | +41.9% | Form 4 ↗ |
| May 8, 2026 | HOWL Werewolf Therapeutics, Inc. | Sale | 25,012 | $0.71 | $17.8K | +41.9% | Form 4 ↗ |
| Apr 20, 2026 | VOR Vor Biopharma Inc. | Sale | 171,963 | $15.77 | $2.7M | +17.2% | Form 4 ↗ |
| Apr 17, 2026 | VOR Vor Biopharma Inc. | Sale | 458,411 | $16.28 | $7.5M | +10.8% | Form 4 ↗ |
| Apr 15, 2026 | VOR Vor Biopharma Inc. | Sale | 53,644 | $16.01 | $858.8K | +16.7% | Form 4 ↗ |
| Apr 14, 2026 | VOR Vor Biopharma Inc. | Sale | 153,735 | $15.97 | $2.5M | +13.7% | Form 4 ↗ |
| Apr 13, 2026 | VOR Vor Biopharma Inc. | Sale | 530,610 | $16.15 | $8.6M | +11.7% | Form 4 ↗ |
| Mar 30, 2026 | WVE Wave Life Sciences, Inc. | Buy | 971,091 | $6.50 | $6.3M | -72.1% | Form 4 ↗ |
| Mar 27, 2026 | WVE Wave Life Sciences, Inc. | Buy | 2.50M | $6.43 | $16.0M | -69.8% | Form 4 ↗ |
| Mar 26, 2026 | WVE Wave Life Sciences, Inc. | Buy | 4.95M | $6.06 | $30.0M | -66.5% | Form 4 ↗ |
| Mar 26, 2026 | WVE Wave Life Sciences, Inc. | Buy | 351,224 | $6.38 | $2.2M | -66.5% | Form 4 ↗ |
| Feb 26, 2026 | BCAX Bicara Therapeutics Inc. | Buy | 300,000 | $16.00 | $4.8M | -49.8% | Form 4 ↗ |
| Nov 19, 2025 | SION Sionna Therapeutics, Inc. | Sale | 8 | $40.61 | $325 | -105.2% | Form 4 ↗ |
| Nov 19, 2025 | SION Sionna Therapeutics, Inc. | Sale | 9 | $40.61 | $365 | -105.2% | Form 4 ↗ |
| Nov 19, 2025 | SION Sionna Therapeutics, Inc. | Sale | 2,276 | $40.01 | $91.1K | -105.2% | Form 4 ↗ |
| Nov 19, 2025 | SION Sionna Therapeutics, Inc. | Sale | 18,684 | $40.01 | $747.5K | -105.2% | Form 4 ↗ |
| Nov 19, 2025 | SION Sionna Therapeutics, Inc. | Sale | 12,126 | $40.01 | $485.2K | -105.2% | Form 4 ↗ |
| Nov 19, 2025 | SION Sionna Therapeutics, Inc. | Sale | 14,325 | $40.01 | $573.1K | -105.2% | Form 4 ↗ |
| Nov 19, 2025 | SION Sionna Therapeutics, Inc. | Sale | 2 | $40.61 | $81.22 | -105.2% | Form 4 ↗ |
| Nov 19, 2025 | SION Sionna Therapeutics, Inc. | Sale | 12 | $40.61 | $487 | -105.2% | Form 4 ↗ |
| Nov 18, 2025 | SION Sionna Therapeutics, Inc. | Sale | 2,092 | $39.57 | $82.8K | -105.8% | Form 4 ↗ |
| Nov 18, 2025 | SION Sionna Therapeutics, Inc. | Sale | 332 | $39.57 | $13.1K | -105.8% | Form 4 ↗ |
| Nov 18, 2025 | SION Sionna Therapeutics, Inc. | Sale | 2,728 | $39.57 | $107.9K | -105.8% | Form 4 ↗ |
| Nov 18, 2025 | SION Sionna Therapeutics, Inc. | Sale | 1,770 | $39.57 | $70.0K | -105.8% | Form 4 ↗ |
| Nov 17, 2025 | SION Sionna Therapeutics, Inc. | Sale | 331 | $42.10 | $13.9K | -105.0% | Form 4 ↗ |
| Nov 17, 2025 | SION Sionna Therapeutics, Inc. | Sale | 10,707 | $41.05 | $439.5K | -105.0% | Form 4 ↗ |
| Nov 17, 2025 | SION Sionna Therapeutics, Inc. | Sale | 2,182 | $40.20 | $87.7K | -105.0% | Form 4 ↗ |
| Nov 17, 2025 | SION Sionna Therapeutics, Inc. | Sale | 17,913 | $40.20 | $720.1K | -105.0% | Form 4 ↗ |
| Nov 17, 2025 | SION Sionna Therapeutics, Inc. | Sale | 11,626 | $40.20 | $467.4K | -105.0% | Form 4 ↗ |
| Nov 17, 2025 | SION Sionna Therapeutics, Inc. | Sale | 13,734 | $40.20 | $552.1K | -105.0% | Form 4 ↗ |
| Nov 17, 2025 | SION Sionna Therapeutics, Inc. | Sale | 1,701 | $41.05 | $69.8K | -105.0% | Form 4 ↗ |
| Nov 17, 2025 | SION Sionna Therapeutics, Inc. | Sale | 9,063 | $41.05 | $372.0K | -105.0% | Form 4 ↗ |
| Nov 17, 2025 | SION Sionna Therapeutics, Inc. | Sale | 13,964 | $41.05 | $573.2K | -105.0% | Form 4 ↗ |
| Nov 17, 2025 | SION Sionna Therapeutics, Inc. | Sale | 53 | $42.10 | $2,231 | -105.0% | Form 4 ↗ |
| Nov 17, 2025 | SION Sionna Therapeutics, Inc. | Sale | 433 | $42.10 | $18.2K | -105.0% | Form 4 ↗ |
| Nov 17, 2025 | SION Sionna Therapeutics, Inc. | Sale | 280 | $42.10 | $11.8K | -105.0% | Form 4 ↗ |
| Nov 13, 2025 | WVE Wave Life Sciences, Inc. | Buy | 1,000 | $6.69 | $6,690 | -65.3% | Form 4 ↗ |
| Nov 7, 2025 | EVMN Evommune, Inc. | Buy | 1.16M | $16.00 | $18.5M | -71.0% | Form 4 ↗ |
| Nov 7, 2025 | EVMN Evommune, Inc. | Buy | 92,904 | $16.00 | $1.5M | -71.0% | Form 4 ↗ |
| Oct 27, 2025 | VOR Vor Biopharma Inc. | Sale | 90,941 | $28.12 | $2.6M | -41.1% | Form 4 ↗ |
| Oct 24, 2025 | VOR Vor Biopharma Inc. | Sale | 53,345 | $28.01 | $1.5M | -40.0% | Form 4 ↗ |
| Oct 23, 2025 | VOR Vor Biopharma Inc. | Sale | 76,880 | $28.01 | $2.2M | -42.3% | Form 4 ↗ |
| Sep 4, 2025 | MLYS Mineralys Therapeutics, Inc. | Buy | 1.18M | $25.50 | $30.0M | -69.9% | Form 4 ↗ |
| Jun 16, 2025 | TYRA Tyra Biosciences, Inc. | Buy | 11,813 | $10.13 | $119.7K | +70.8% | Form 4 ↗ |
| Jun 13, 2025 | TYRA Tyra Biosciences, Inc. | Buy | 120,167 | $10.20 | $1.2M | +65.6% | Form 4 ↗ |
| Jun 12, 2025 | TYRA Tyra Biosciences, Inc. | Buy | 31,307 | $10.20 | $319.3K | +68.9% | Form 4 ↗ |
| Feb 10, 2025 | SION Sionna Therapeutics, Inc. | Buy | 1.02M | $18.00 | $18.4M | -109.7% | Form 4 ↗ |
| Feb 10, 2025 | SION Sionna Therapeutics, Inc. | Buy | 102,414 | $18.00 | $1.8M | -109.7% | Form 4 ↗ |
Each row links to its Form 4. Since trade compares the stock’s move from the close on the trade date (or the next trading day) to its latest close with the S&P 500 over the same days, adjusted for splits and excluding dividends. It describes the stock, not what the trader made: we don’t know their purchase price, position size or later sales. A dash means the trade isn’t matched to a listed stock, or there is no closing price after it yet.
When several people report on the same filing, we list it under the first one named, so trades by someone usually listed second may be missing here. Information, not investment advice: see the disclaimer.