ARCH Venture Fund X, L.P.

10% Owner · Aspen Neuroscience, Inc.

Every open-market stock purchase ARCH Venture Fund X, L.P. has reported to the SEC on Form 4 that met our signal bar, parsed straight from the filings. This page tracks where those buys landed inside insider clusters and how the prices paid compare to where the stock trades now.

Total bought

$20.0M

Open-market buys

Companies

Last buy

Nov 2, 2026

Where the buys stand today

ASPE
Aspen Neuroscience, Inc.
3 purchases totalling $20.0M at an average of $15.00 per share. See all insider buying in ASPE →
Avg price paid
$15.00
Latest price
—
Market cap
Unknown

Cluster participation

Qualifying buys grouped with other insiders buying the same stock — the pattern this site exists to catch.

ASPENov 2 – Nov 2, 2026
2 insiders$38.0M

All reported buys

Date	Ticker	Shares	Price	Value	Filing
Nov 2, 2026	ASPEcluster	66,666	$15.00	$1.0M	SEC ↗
Nov 2, 2026	ASPEcluster	66,667	$15.00	$1.0M	SEC ↗
Nov 2, 2026	ASPEcluster	1,200,000	$15.00	$18.0M	SEC ↗

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About this data

Figures are parsed from ARCH Venture Fund X, L.P.'s Form 4 filings on SEC EDGAR (CIK 1757011) 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.