Net shares · 365d
+3.0M
3.0M buy · 0 sell
Net value · 365d
$24.8M
$24.8M in · $0 out
Sentiment · 365d
Net buying
100% buying · 0% selling
Open-market trades · 365d
2
3.0M buy · 0 sell
Trading track record · all companies
Not enough open-market trades to chart a track record yet.
Running net of open-market buys − sells across every company. Tap the line or a marker for details. ▲ buy · ▼ sell.
Transactions · 365d
-
SPTX Exercise·C
10% Owner
$0
5.2M sh · 2 lots
Own New
-
SPTX Buy·P
10% Owner
$19.8M
1.1M sh · $18.00
Own +21%
-
SPTX Exercise·C
10% Owner
—
5.2M sh · 2 lots
Own New
-
MTSR Other·D
Director,TenPercentOwner
—
26.8M sh · 2 lots
Own -100%
-
NMRA Buy·P
TenPercentOwner
$5.0M
1.9M sh · $2.61
Own +46%
| Date▾ | Ticker | Type | Shares | Value |
|---|---|---|---|---|
| May 4, 2026 | SPTX | Exercise C | 5.2M · 2 lots | $0 |
| May 4, 2026 | SPTX | Buy P | 1.1M | $19.8M |
| May 4, 2026 | SPTX | Exercise C | 5.2M · 2 lots | — |
| Nov 13, 2025 | MTSR | Other D | 26.8M · 2 lots | — |
| Oct 27, 2025 | NMRA | Buy P | 1.9M | $5.0M |
Buy Sell Non-market (grant · exercise · gift)
About ARCH Venture Partners XII, LLC
This profile aggregates every SEC Form 4 insider transaction reported by ARCH Venture Partners XII, LLC across all companies they trade. Open-market purchases (code P) and sales (code S) are the highest-signal, discretionary trades; grants (A), option exercises (M) and gifts (G) reflect compensation rather than conviction and carry no market price. Figures cover the selected period and update as new filings are ingested.