ARCH Venture Fund X, L.P.

This profile gathers the share dealings of ARCH Venture Fund X, L.P. across 2 companies, led by Aspen Neuroscience, Inc. and Sana Biotechnology, Inc. Between 8 February 2021 and 2 November 2026, the trades on record add up to 23 filings.

Every open-market trade on record is a purchase: 6 purchases worth €27.2M, and no sale. Open-market purchases are the filings investors watch most closely, because the insider pays for the shares out of pocket. In 2026 alone, the filings show 3 purchases and no sales.

In size, the median ticket on the buying side is €2.8M. On 5 out of 5 purchases, another insider of the same company was buying within the same 30 days. Purchases made close together by different insiders form what is called a cluster.

Most recently, on 2 November 2026, the filings show a transaction in Aspen Neuroscience, Inc. The last insider purchase was made public on 2 November 2026, 6 days ago. Filings reach the SEC (Form 4) feed a median of 2 days after the trade. For comparison, the SEC allows two business days to file a Form 4. Every figure here comes from the filings published by SEC (Form 4) and describes the past, not future prices; it is not investment advice.