ARCH Venture Partners X, LLC insider trades: Aspen Neuroscience (ASPE) stock buys and sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where ARCH Venture Partners X, LLC reports to the SEC
and 2 more companies
Open-market buys and sales
13 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Nov 2, 2026 | ASPE | ↑ Buy | 1,200,000 | $15.00 | $18.0M | Indirect | Nov 2, 2026 (0d) |
| Nov 2, 2026 | ASPE | ↑ Buy | 133,333 | $15.00 | $2.0M | Direct | Nov 2, 2026 (0d) |
| Jul 1, 2026 | BOLD | ↓ Sell | 16,000 | $2.49 | $40K | Indirect | Jul 6, 2026 (5d) |
| Oct 27, 2025 | NMRA | ↑ Buy | 1,915,700 | $2.61 | $5.0M | By ARCH Venture Fund XII, L.P. | Oct 29, 2025 (2d) |
| Aug 1, 2025 | PRME | ↑ Buy | 3,030,300 | $3.30 | $10.0M | By ARCH Venture Fund XII, L.P. | Aug 1, 2025 (0d) |
| Apr 2, 2024 | BOLD | ↑ Buy | 200,000 | $16.00 | $3.2M | Indirect | Apr 4, 2024 (2d) |
| Feb 15, 2024 | PRME | ↑ Buy | 3,200,000 | $6.25 | $20.0M | By ARCH Venture Fund XII, L.P. | Feb 20, 2024 (5d) |
| Feb 8, 2024 | SANA | ↑ Buy | 1,090,909 | $5.50 | $6.0M | Indirect | Feb 12, 2024 (4d) |
| Sep 19, 2023 | NMRA | ↑ Buy | 1,500,000 | $17.00 | $25.5M | By ARCH Venture Fund XII, L.P. | Sep 20, 2023 (1d) |
| Sep 19, 2023 | NMRA | ↑ Buy | 1,500,000 | $17.00 | $25.5M | By ARCH Venture Fund XII, L.P. | Sep 20, 2023 (1d) |
| Oct 24, 2022 | PRME | ↑ Buy | 400,000 | $17.00 | $6.8M | By ARCH Venture Fund X Overage, L.P. | Oct 26, 2022 (2d) |
| Oct 24, 2022 | PRME | ↑ Buy | 400,000 | $17.00 | $6.8M | By ARCH Venture Fund X, L.P. | Oct 26, 2022 (2d) |
| Feb 22, 2019 | SNNA | ↑ Buy | 2,165,800 | $2.50 | $5.4M | Indirect | Feb 26, 2019 (4d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other ASPE insiders
Open-market trades in the last 12 months
About ARCH Venture Partners X, LLC's insider trades
ARCH Venture Partners X, LLC is an insider at Aspen Neuroscience (ASPE). Since Feb 22, 2019, it has reported 12 open-market purchases worth $134.2M and 1 sale worth $40K on SEC Form 4. In the last 12 months: 2 buys ($20.0M) and 1 sale ($40K).
Its filings also include conversions (8 filings), option exercises (1 filing), other transactions (1 filing). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every ASPE insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.