Form 4 - Statement of changes in beneficial ownership of securities:
SEC Accession No. 0001193125-26-170468
Filing Date
2026-04-22
Accepted
2026-04-22 16:15:58
Documents
1
Period of Report
2026-04-21

Document Format Files

Seq Description Document Type Size
1 4 ownership.html 4  
1 4 ownership.xml 4 17076
  Complete submission text file 0001193125-26-170468.txt   21497
Mailing Address BAKER BROS. ADVISORS LP 860 WASHINGTON STREET 3RD FLOOR NEW YORK NY 10014
Business Address
BAKER JULIAN (Reporting) CIK: 0001087939 (see all company filings)

Type: 4 | Act: 34 | File No.: 001-39527 | Film No.: 26883991

Mailing Address BAKER BROS. ADVISORS LP 860 WASHINGTON STREET 3RD FLOOR NEW YORK NY 10014
Business Address
BAKER FELIX (Reporting) CIK: 0001087940 (see all company filings)

Type: 4 | Act: 34 | File No.: 001-39527 | Film No.: 26883992

Mailing Address 860 WASHINGTON STREET 3RD FLOOR NEW YORK NY 10014
Business Address 860 WASHINGTON STREET 3RD FLOOR NEW YORK NY 10014 2123395600
BAKER BROS. ADVISORS LP (Reporting) CIK: 0001263508 (see all company filings)

State of Incorp.: DE | Fiscal Year End: 1231
Type: 4 | Act: 34 | File No.: 001-39527 | Film No.: 26883996

Mailing Address 860 WASHINGTON STREET 3RD FLOOR NEW YORK NY 10014
Business Address 860 WASHINGTON STREET 3RD FLOOR NEW YORK NY 10014 212-339-5600
Baker Brothers Life Sciences LP (Reporting) CIK: 0001363364 (see all company filings)

State of Incorp.: DE | Fiscal Year End: 1231
Type: 4 | Act: 34 | File No.: 001-39527 | Film No.: 26883993

Mailing Address 860 WASHINGTON STREET 3RD FLOOR NEW YORK NY 10014
Business Address 860 WASHINGTON STREET 3RD FLOOR NEW YORK NY 10014 212-339-5600
667, L.P. (Reporting) CIK: 0001551139 (see all company filings)

State of Incorp.: DE | Fiscal Year End: 1231
Type: 4 | Act: 34 | File No.: 001-39527 | Film No.: 26883995

Mailing Address 860 WASHINGTON STREET 3RD FLOOR NEW YORK NY 10014
Business Address 860 WASHINGTON STREET 3RD FLOOR NEW YORK NY 10014 (212)339-5600
Baker Bros. Advisors (GP) LLC (Reporting) CIK: 0001580575 (see all company filings)

State of Incorp.: DE | Fiscal Year End: 1231
Type: 4 | Act: 34 | File No.: 001-39527 | Film No.: 26883994

Mailing Address 175 INNOVATION BOULEVARD WILMINGTON DE 19805
Business Address 175 INNOVATION BOULEVARD WILMINGTON DE 19805 (302) 467-1280
Prelude Therapeutics Inc (Issuer) CIK: 0001678660 (see all company filings)

EIN.: 811384762 | State of Incorp.: DE | Fiscal Year End: 1231
SIC: 2834 Pharmaceutical Preparations
(CF Office: 03 Life Sciences)