Fairmount Funds Management LLC

Director, 10% Owner · CRESCENT BIOPHARMA, INC.

Every open-market stock purchase Fairmount Funds Management LLC 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 how the prices paid compare to where the stock trades now.

Total bought
$60.4M
Open-market buys
4
Companies
4
Last buy
Jul 16, 2026

Where the buys stand today

  • COGT
    Cogent Biosciences, Inc.

    One purchase totalling $25.0M at an average of $9.00 per share. See all insider buying in COGT

    Avg price paid
    $9.00
    Latest price
    Market cap
    Unknown
  • VRDN
    Viridian Therapeutics, Inc.\DE
    +11.7% vs price paid

    One purchase totalling $20.0M at an average of $17.00 per share; the stock last traded at $18.99. See all insider buying in VRDN

    Avg price paid
    $17.00
    Latest price
    $18.99
    Market cap
    $2.1B
  • CBIO
    CRESCENT BIOPHARMA, INC.

    One purchase totalling $12.4M at an average of $14.50 per share. See all insider buying in CBIO

    Avg price paid
    $14.50
    Latest price
    Market cap
    Unknown
  • ZBIO
    Zenas BioPharma, Inc.
    +40.0% vs price paid

    One purchase totalling $3.0M at an average of $20.00 per share; the stock last traded at $28.00. See all insider buying in ZBIO

    Avg price paid
    $20.00
    Latest price
    $28.00
    Market cap
    $1.8B

All reported buys

DateTickerSharesPriceValueFiling
Jul 16, 2026853,450$14.50$12.4MSEC ↗
May 11, 20261,176,470$17.00$20.0MSEC ↗
Mar 31, 2026150,000$20.00$3.0MSEC ↗
Jul 10, 20252,777,777$9.00$25.0MSEC ↗

Get alerted the next time Fairmount Funds Management LLC — 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 Fairmount Funds Management LLC's Form 4 filings on SEC EDGAR (CIK 1802528) 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.