X0609 4 2026-04-13 0001817229 Vor Biopharma Inc. VOR 0001346824 RA CAPITAL MANAGEMENT, L.P. false 200 BERKELEY STREET 18TH FLOOR BOSTON MA 02116 true false true false 0001315082 RA Capital Healthcare Fund LP false 200 BERKELEY STREET, 18TH FLOOR BOSTON MA 02116 1 0 1 0 0001384859 Kolchinsky Peter false C/O RA CAPITAL MANAGEMENT, L.P. 200 BERKELEY STREET, 18TH FLOOR BOSTON MA 02116 1 0 1 0 0001619841 Shah Rajeev M. false C/O RA CAPITAL MANAGEMENT, L.P. 200 BERKELEY STREET, 18TH FLOOR BOSTON MA 02116 1 0 1 0 0 Common Stock 2026-04-13 4 S 0 530610 16.15 D 3404998 I See footnotes Common Stock 2026-04-14 4 S 0 153735 15.97 D 3251263 I See footnotes Common Stock 2026-04-15 4 S 0 53644 16.01 D 3197619 I See footnotes The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $15.94 to $16.32 inclusive. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. RA Capital Management, L.P. (the "Adviser") is the investment manager for RA Capital Healthcare Fund, L.P. (the "Fund"). The general partner of the Adviser is RA Capital Management GP, LLC (the "Adviser GP"), of which Dr. Peter Kolchinsky and Mr. Rajeev Shah are the managing members. Each of the Adviser, the Adviser GP, the Fund, Dr. Kolchinsky and Mr. Shah disclaims beneficial ownership of any of the reported securities, except to the extent of its or his respective pecuniary interest therein. Held directly by the Fund. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $15.75 to $16.17 inclusive. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $16.005 to $16.10 inclusive. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. Dr. Andrew Levin, a Partner and Managing Director of the Adviser, serves on the Issuer's board of directors. /s/ Peter Kolchinsky, Manager of RA Capital Management, L.P. 2026-04-15 /s/ Peter Kolchinsky, Manager of RA Capital Healthcare GP, LLC, the General Partner of RA Capital Healthcare Fund, L.P. 2026-04-15 /s/ Peter Kolchinsky, individually 2026-04-15 /s/ Rajeev Shah, individually 2026-04-15