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Form 3 - Initial statement of beneficial ownership of securities:
SEC Accession No. 0000950170-24-114162
Filing Date
2024-10-10
Accepted
2024-10-10 20:33:38
Documents
2
Period of Report
2024-10-10

Document Format Files

Seq Description Document Type Size
1 3 ownership.html 3  
1 3 ownership.xml 3 10930
2 EX-24 ck0002022626-ex24.htm EX-24 13738
  Complete submission text file 0000950170-24-114162.txt   26054
Mailing Address P.O. BOX 4023 HERZLIYA PITUACH L3 4614001
Business Address
Chimovits Erez (Reporting) CIK: 0001706399 (see all company filings)

Type: 3 | Act: 34 | File No.: 001-42366 | Film No.: 241366150

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. (Issuer) CIK: 0002022626 (see all company filings)

IRS No.: 000000000 | State of Incorp.: DE | Fiscal Year End: 1231
SIC: 2834 Pharmaceutical Preparations
(CF Office: 03 Life Sciences)