ARCH Venture Partners XII LLC insider trades

Open-market stock purchases and sales by ARCH Venture Partners XII LLC, Unknown at Seaport Therapeutics, Inc, from SEC Form 4 filings since Sep 22, 2023.

Track record: 9% of 23 scored buys are up 5% or more since purchase, averaging -46%.

Recent trades

DateStockTradeValue
May 4, 2026SPTX Seaport Therapeutics, IncBought (not open market)—
May 4, 2026SPTX Seaport Therapeutics, IncBought$19.8M
May 4, 2026SPTX Seaport Therapeutics, IncBought (not open market)—
Nov 13, 2025MTSR Metsera, IncSold (not open market)—
Nov 13, 2025MTSR Metsera, IncSold (not open market)—
Oct 27, 2025NMRA Neumora Therapeutics, IncBought$5M

Companies traded

  • SPTX Seaport Therapeutics, Inc: 1 buy, last May 4, 2026
  • MTSR Metsera, Inc: 2 buys, last Nov 13, 2025
  • NMRA Neumora Therapeutics, Inc: 19 buys, last Oct 27, 2025
  • PRME Prime Medicine, Inc: 2 buys, last Aug 1, 2025
  • RAPP Rapport Therapeutics, Inc: other filings, last Jun 10, 2024

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