Form 4 - Statement of changes in beneficial ownership of securities:
SEC Accession No. 0000950170-25-012579
Filing Date
2025-02-03
Accepted
2025-02-03 19:01:33
Documents
1
Period of Report
2025-02-03

Document Format Files

Seq Description Document Type Size
1 4 ownership.html 4  
1 4 ownership.xml 4 30381
  Complete submission text file 0000950170-25-012579.txt   36152
Mailing Address 8755 W. HIGGINS ROAD SUITE 1025 CHICAGO IL 60631
Business Address
CRANDELL KEITH (Reporting) CIK: 0001219039 (see all company filings)

Type: 4 | Act: 34 | File No.: 001-42489 | Film No.: 25584278

Mailing Address 8755 W. HIGGINS ROAD SUITE 1025 CHICAGO IL 60631
Business Address
NELSEN ROBERT (Reporting) CIK: 0001219042 (see all company filings)

Type: 4 | Act: 34 | File No.: 001-42489 | Film No.: 25584276

Mailing Address 8755 W. HIGGINS ROAD SUITE 1025 CHICAGO IL 60631
Business Address
GILLIS STEVEN (Reporting) CIK: 0001229592 (see all company filings)

Type: 4 | Act: 34 | File No.: 001-42489 | Film No.: 25584277

Mailing Address 8755 W. HIGGINS ROAD, SUITE 1025 CHICAGO IL 60631
Business Address 8755 W. HIGGINS ROAD, SUITE 1025 CHICAGO IL 60631 773-380-6600
ARCH Venture Fund XII, L.P. (Reporting) CIK: 0001906837 (see all company filings)

State of Incorp.: DE | Fiscal Year End: 1231
Type: 4 | Act: 34 | File No.: 001-42489 | Film No.: 25584283

Mailing Address 8755 W HIGGINS ROAD SUITE 1025 CHICAGO IL 60631
Business Address 8755 W HIGGINS ROAD SUITE 1025 CHICAGO IL 60631 7733806600
ARCH Venture Partners XII, LLC (Reporting) CIK: 0001979548 (see all company filings)

State of Incorp.: DE | Fiscal Year End: 1231
Type: 4 | Act: 34 | File No.: 001-42489 | Film No.: 25584284

Mailing Address 8755 W HIGGINS ROAD SUITE 1025 CHICAGO IL 60631
Business Address 8755 W HIGGINS ROAD SUITE 1025 CHICAGO IL 60631 7733806600
ARCH Venture Partners XII, L.P. (Reporting) CIK: 0001979765 (see all company filings)

State of Incorp.: DE | Fiscal Year End: 1231
Type: 4 | Act: 34 | File No.: 001-42489 | Film No.: 25584282

Mailing Address 8755 W. HIGGINS ROAD, SUITE 1025 CHICAGO IL 60631
Business Address 8755 W. HIGGINS ROAD, SUITE 1025 CHICAGO IL 60631 773-380-6600
ARCH Venture Fund XIII, L.P. (Reporting) CIK: 0002006772 (see all company filings)

State of Incorp.: DE | Fiscal Year End: 1231
Type: 4 | Act: 34 | File No.: 001-42489 | Film No.: 25584281

Mailing Address 8755 W HIGGINS ROAD SUITE 1025 CHICAGO IL 60631
Business Address 8755 W HIGGINS ROAD SUITE 1025 CHICAGO IL 60631 773-380-6600
ARCH Venture Partners XIII, LLC (Reporting) CIK: 0002016082 (see all company filings)

State of Incorp.: DE | Fiscal Year End: 1231
Type: 4 | Act: 34 | File No.: 001-42489 | Film No.: 25584279

Mailing Address 8755 W HIGGINS ROAD SUITE 1025 CHICAGO IL 60631
Business Address 8755 W HIGGINS ROAD SUITE 1025 CHICAGO IL 60631 773-380-6600
ARCH Venture Partners XIII, L.P. (Reporting) CIK: 0002016083 (see all company filings)

State of Incorp.: DE | Fiscal Year End: 1231
Type: 4 | Act: 34 | File No.: 001-42489 | Film No.: 25584280

Mailing Address 3 WORLD TRADE CENTER 175 GREENWICH STREET NEW YORK NY 10007
Business Address 3 WORLD TRADE CENTER 175 GREENWICH STREET NEW YORK NY 10007 (212) 784-6595
Metsera, Inc. (Issuer) CIK: 0002040807 (see all company filings)

EIN.: 000000000 | State of Incorp.: DE | Fiscal Year End: 1231
SIC: 2834 Pharmaceutical Preparations
(CF Office: 03 Life Sciences)