Form 3 - Initial statement of beneficial ownership of securities:
SEC Accession No. 0000950170-25-062086
Filing Date
2025-05-01
Accepted
2025-05-01 17:58:01
Documents
1
Period of Report
2025-04-28

Document Format Files

Seq Description Document Type Size
1 3 ownership.html 3  
1 3 ownership.xml 3 13049
  Complete submission text file 0000950170-25-062086.txt   16256
Mailing Address 200 BARR HARBOR DRIVE SUITE 400 WEST CONSHOHOCKEN PA 19428
Business Address
Harwin Peter Evan (Reporting) CIK: 0001663607 (see all company filings)

Type: 3 | Act: 34 | File No.: 001-40544 | Film No.: 25904709

Mailing Address 200 BARR HARBOR DRIVE SUITE 400 WEST CONSHOHOCKEN PA 19428
Business Address 200 BARR HARBOR DRIVE SUITE 400 WEST CONSHOHOCKEN PA 19428 (267) 760-4066
Fairmount Healthcare Fund II L.P. (Reporting) CIK: 0001769651 (see all company filings)

State of Incorp.: DE | Fiscal Year End: 1231
Type: 3 | Act: 34 | File No.: 001-40544 | Film No.: 25904711

Mailing Address 221 CRESCENT ST. BUILDING 23, SUITE 105 WALTHAM MA 02453
Business Address 221 CRESCENT ST. BUILDING 23, SUITE 105 WALTHAM MA 02453 (781) 312-3013
Jade Biosciences, Inc. (Issuer) CIK: 0001798749 (see all company filings)

EIN.: 831377888 | State of Incorp.: DE | Fiscal Year End: 1231
SIC: 2834 Pharmaceutical Preparations
(CF Office: 03 Life Sciences)

Mailing Address 200 BARR HARBOR DRIVE SUITE 400 WEST CONSHOHOCKEN PA 19428
Business Address 200 BARR HARBOR DRIVE SUITE 400 WEST CONSHOHOCKEN PA 19428 267-262-5300
Fairmount Funds Management LLC (Reporting) CIK: 0001802528 (see all company filings)

State of Incorp.: DE | Fiscal Year End: 1231
Type: 3 | Act: 34 | File No.: 001-40544 | Film No.: 25904712

Mailing Address 200 BARR HARBOR DRIVE SUITE 400 WEST CONSHOHOCKEN PA 19428
Business Address
Kiselak Tomas (Reporting) CIK: 0001830177 (see all company filings)

Type: 3 | Act: 34 | File No.: 001-40544 | Film No.: 25904710