Arch Venture Fund X, L.P.
At a glance: Arch Venture Fund X, L.P. is 10% Owner at Aspen Neuroscience (ASPE). Their latest SEC Form 4, filed Nov 2, 2026, reported a purchase of $1000K. On file: 3 purchase lines ($20.0M) and 0 sale lines ($0).
10% Owner at Aspen Neuroscience, Inc. (ASPE)
Purchase track record
Not enough history. Based on 0 purchases with a full 90 days of price history.
Every purchase since 2024
From the SEC's insider data sets: each open-market buy by Arch Venture Fund X, L.P., matched to how the stock did over the next 90 days against the S&P 500.
1 of 1 buy beat the S&P 500 (100%), median +15.7% vs. the index. Small sample: treat with care. All insider buys: 46%.
| Stock | Filed | 90 days vs. S&P 500 |
|---|---|---|
| SANA | Feb 12, 2024 | +15.7% |
Buys made close together in one stock count once. Price-only returns; history, not a prediction.
Reported trades
| Filed | Stock | Type | Shares | Price | Value | Since |
|---|---|---|---|---|---|---|
| Nov 2SEC | ASPEAspen Neuroscience, Inc. | Buy | 66,666new position | $15.00 | $1000K | -18.7% |
| Nov 2SEC | ASPEAspen Neuroscience, Inc. | Buy | 66,667new position | $15.00 | $1.0M | -18.7% |
| Nov 2SEC | ASPEAspen Neuroscience, Inc. | Buy | 1,200,000new position | $15.00 | $18.0M | -18.7% |
- Buy
10% Owner Arch Venture Fund X, L.P. bought $1000K of ASPE at $15.00 — first open-market purchase in our records; opens a new position.
- Buy
10% Owner Arch Venture Fund X, L.P. bought $1.0M of ASPE at $15.00 — opens a new position.
- Buy
10% Owner Arch Venture Fund X, L.P. bought $18.0M of ASPE at $15.00 — largest purchase by this insider in our records; opens a new position.