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Ra Capital Management, L.P. Insider Trades

Entity

Director at Septerna, Inc. and 2 other companies. 7 significant open-market trades reported on SEC Form 4 in the last 180 days.

$12.0M

Bought

$63.5M

Sold

6 / 1

Buys / Sells

3

Companies

Companies

  • SEPNDirector

    Septerna, Inc.

    1 sell, $63.5M

  • ARTVDirector

    Artiva Biotherapeutics, Inc.

    5 buys, $5.1M

  • PBLSDirector

    Parabilis Medicines, Inc.

    1 buy, $6.9M

Reported Trades

Open-market transactions only (code P and S), outside any 10b5-1 plan, dated by the day the filing reached EDGAR. Each row links to the filing.

FiledCompanyTradeValue
Aug 14, 2026SEPNDirectorsell67.3% of stake$63.5M
Jul 31, 2026ARTVDirectorbuy$456K
Jul 28, 2026ARTVDirectorbuy$413K
Jul 23, 2026ARTVDirectorbuy$2.6M
Jul 22, 2026PBLSDirectorbuy$6.9M
Jul 20, 2026ARTVDirectorbuy$1.4M
Jul 14, 2026ARTVDirectorbuy$194K

Other Insiders at These Companies

Everyone else who reported a significant open-market trade at the same companies in the last 180 days. Several buyers inside one week is cluster buying.

How to Read This Page

These are the trades an insider chose to make with their own money, not grants, option exercises or tax withholding. A purchase is the stronger signal (why buys carry more information than sales), and an insider who buys is locked out of selling for six months by the short-swing rule. Several insiders buying at the same company in the same week is cluster buying, the pattern the research literature rates highest. The window here is 180 days; the full filing history lives on EDGAR.

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Ra Capital Management, L.P. Insider Trades - InsiderWatch