Form SCHEDULE 13G - Statement of Beneficial Ownership by Certain Investors:
SEC Accession No. 0000950170-25-021267
Filing Date
2025-02-14
Accepted
2025-02-14 16:23:29
Documents
2

Document Format Files

Seq Description Document Type Size
1 primary_doc.html SCHEDULE 13G  
1 primary_doc.xml SCHEDULE 13G 11373
2 EX-99.I ck0001669811-ex99_i.pdf EX-99.I 75774
  Complete submission text file 0000950170-25-021267.txt   117572
Mailing Address 228 HAMILTON AVENUE, 3RD FLOOR PALO ALTO CA 94301
Business Address 228 HAMILTON AVENUE, 3RD FLOOR PALO ALTO CA 94301 650-798-5495
TCG Crossover GP I, LLC (Filed by) CIK: 0001839947 (see all company filings)

EIN.: 000000000 | State of Incorp.: DE | Fiscal Year End: 1231
Type: SCHEDULE 13G

Mailing Address 890 WINTER STREET, SUITE 200 WALTHAM MA 02451
Business Address 890 WINTER STREET, SUITE 200 WALTHAM MA 02451 781-208-2466
Upstream Bio, Inc. (Subject) CIK: 0002022626 (see all company filings)

EIN.: 000000000 | State of Incorp.: DE | Fiscal Year End: 1231
Type: SCHEDULE 13G | Act: 34 | File No.: 005-94651 | Film No.: 25629363
SIC: 2834 Pharmaceutical Preparations
(CF Office: 03 Life Sciences)