RA Capital Nexus Fund III, L.P.

Director · Mineralys Therapeutics, Inc.

Every open-market stock purchase RA Capital Nexus Fund III, L.P. has reported to the SEC on Form 4 that met our signal bar, parsed straight from the filings. Insiders sell for many reasons, but they buy with their own money for one — this page tracks where those buys landed inside insider clusters and how the prices paid compare to where the stock trades now.

Total bought
$50.5M
Open-market buys
3
Companies
2
Last buy
Mar 13, 2025

Where the buys stand today

  • BCAX
    Bicara Therapeutics Inc.
    +60.6% vs price paid

    2 purchases totalling $33.0M at an average of $18.00 per share; the stock last traded at $28.91. See all insider buying in BCAX

    Avg price paid
    $18.00
    Latest price
    $28.91
    Market cap
    $1.9B
  • MLYS
    Mineralys Therapeutics, Inc.
    +115.7% vs price paid

    One purchase totalling $17.5M at an average of $13.50 per share; the stock last traded at $29.12. See all insider buying in MLYS

    Avg price paid
    $13.50
    Latest price
    $29.12
    Market cap
    $2.6B

Cluster participation

Buys that landed within days of other insiders buying the same stock — the pattern this site exists to catch.

All reported buys

DateTickerSharesPriceValueFiling
Mar 13, 2025
MLYScluster
1,296,296$13.50$17.5MSEC ↗
Sep 16, 2024
BCAXcluster
1,680,520$18.00$30.2MSEC ↗
Sep 16, 2024
BCAXcluster
152,480$18.00$2.7MSEC ↗

Get alerted the next time RA Capital Nexus Fund III, L.P. — or any insider — buys

We watch every Form 4 as it hits SEC EDGAR and alert you when insiders cluster into the same stock.

About this data

Figures are parsed from RA Capital Nexus Fund III, L.P.'s Form 4 filings on SEC EDGAR (CIK 1883840) and cover open-market purchases (transaction code P) — grants, option exercises, and sales are excluded, which is why totals here can differ from raw filing counts. Every row links to its source document.

This page is informational and reflects public filing data. It is not investment advice.