Form 4 - Statement of changes in beneficial ownership of securities:
SEC Accession No. 0001415889-25-017903
Filing Date
2025-06-20
Accepted
2025-06-20 18:46:21
Documents
1
Period of Report
2025-06-17

Document Format Files

Seq Description Document Type Size
1 form4-06202025_100616.html 4  
1 form4-06202025_100616.xml 4 10230
  Complete submission text file 0001415889-25-017903.txt   13978
Mailing Address 200 BERKELEY STREET 18TH FLOOR BOSTON MA 02116
Business Address 200 BERKELEY STREET 18TH FLOOR BOSTON MA 02116 6177782500
RA Capital Healthcare Fund LP (Reporting) CIK: 0001315082 (see all company filings)

State of Incorp.: DE | Fiscal Year End: 1231
Type: 4 | Act: 34 | File No.: 001-42382 | Film No.: 251062651

Mailing Address 200 BERKELEY STREET, 18TH FLOOR BOSTON MA 02116
Business Address 200 BERKELEY STREET, 18TH FLOOR BOSTON MA 02116 617-778-2500
RA CAPITAL MANAGEMENT, L.P. (Reporting) CIK: 0001346824 (see all company filings)

State of Incorp.: DE | Fiscal Year End: 1231
Type: 4 | Act: 34 | File No.: 001-42382 | Film No.: 251062652

Mailing Address 200 BERKELEY STREET 18TH FLOOR BOSTON MA 02116
Business Address
Kolchinsky Peter (Reporting) CIK: 0001384859 (see all company filings)

Type: 4 | Act: 34 | File No.: 001-42382 | Film No.: 251062649

Mailing Address 200 BERKELEY STREET 18TH FLOOR BOSTON MA 02116
Business Address
Shah Rajeev M. (Reporting) CIK: 0001619841 (see all company filings)

Type: 4 | Act: 34 | File No.: 001-42382 | Film No.: 251062648

Mailing Address 200 BERKELEY STREET, 18TH FLOOR BOSTON MA 02116
Business Address 200 BERKELEY STREET, 18TH FLOOR BOSTON MA 02116 617-778-2500
RA Capital Nexus Fund III, L.P. (Reporting) CIK: 0001883840 (see all company filings)

State of Incorp.: DE | Fiscal Year End: 1231
Type: 4 | Act: 34 | File No.: 001-42382 | Film No.: 251062650

Mailing Address 250 EAST GRAND AVENUE, SUITE 65 SOUTH SAN FRANCISCO CA 94080
Business Address 250 EAST GRAND AVENUE, SUITE 65 SOUTH SAN FRANCISCO CA 94080 650-338-3533
Septerna, Inc. (Issuer) CIK: 0001984086 (see all company filings)

EIN.: 843891440 | State of Incorp.: DE | Fiscal Year End: 1231
SIC: 2834 Pharmaceutical Preparations
(CF Office: 03 Life Sciences)