ARCH Venture Partners XII, LLC: insider buys
Every open-market stock purchase reported by ARCH Venture Partners XII, LLC to the SEC on Form 4.
Total bought$8.06M
Purchases2
Companies2
Last purchase filedOct 19, 2026
Return on these buys-48%
ARCH Venture Partners XII, LLC has made 2 open-market purchases worth $8.06M in 2 companies since Oct 29, 2025, according to SEC Form 4 filings. The most recent was filed on Oct 19, 2026: 170,000 shares of CTY at $18.00 (10% Owner), worth $3.06M. The largest was $5M of NMRA on Oct 27, 2025. Taken together, these purchases are down 48% at the latest closing prices (split-adjusted, weighted by amount).
Companies ARCH Venture Partners XII, LLC bought
| Ticker | Company | Role | Buys | Total | Since buy | Last filed |
|---|---|---|---|---|---|---|
| NMRA | Neumora Therapeutics, Inc. | 10% Owner | 1 | $5M | -86% | Oct 29 |
| CTY | City Therapeutics, Inc. | 10% Owner | 1 | $3.06M | +15% | Oct 19 |
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| Filed | Stock | Insider | Value | Shares | Price | Since buy | Stake | Trade | |
|---|---|---|---|---|---|---|---|---|---|
| Oct 19 | CTYCity Therapeutics, Inc. | ARCH Venture Partners XII, LL…10% Owner | $3.06M | 170,000 | $18.00 | +15% | +1% | Oct 19 | SEC |
| Oct 29 | NMRANeumora Therapeutics, Inc. | ARCH Venture Partners XII, LL…10% Owner | $5M | 1,915,700 | $2.61 | -86% | +46% | Oct 27 | SEC |