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ARCH Venture Fund XII, L.P.

Activist investor & 5%+ owner · SC 13D/13G filings

Total Filings

2

Stocks Covered

1

Latest Filing

Nov 14, 2025

Filings

MTSR

Metsera, Inc.

SC 13D/A · Nov 14, 2025

0.0%

0 shares

MTSR

Metsera, Inc.

SC 13D · Feb 11, 2025

25.5%

26.8M shares