The Securities and Exchange Commission has not necessarily reviewed the information in this filing and has not determined if it is accurate and complete.
The reader should not assume that the information is accurate and complete.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 13F

FORM 13F COVER PAGE

OMB APPROVAL
OMB Number: 3235-0006
Estimated average burden
hours per response: 23.8

Report for the Calendar Year or Quarter Ended: 06-30-2024
Check here if Amendment    Amendment Number:
This Amendment (Check only one.):    is a restatement.
   adds new holdings entries.
Institutional Investment Manager Filing this Report:
Name: RA CAPITAL MANAGEMENT, L.P.
Address: 200 Berkeley Street, 18th Floor
Boston, MA  02116
Form 13F File Number: 028-12884
CRD Number (if applicable):
SEC File Number (if applicable):

The institutional investment manager filing this report and the person by whom it is signed hereby represent that the person signing the report is authorized to submit it, that all information contained herein is true, correct and complete, and that it is understood that all required items, statements, schedules, lists, and tables, are considered integral parts of this form.

Person Signing this Report on Behalf of Reporting Manager:
Name: Rajeev Shah
Title: Authorized Signatory
Phone: 617-778-2500
Signature, Place, and Date of Signing:
/s/ Rajeev Shah BostonMA 08-14-2024
[Signature] [City, State] [Date]
The shares of Eliem Therapeutics, Inc. listed in the Information Table with "OTR" investment discretion represent shares held by Sera Medicines, LLC ("Sera"). Funds advised by the Reporting Manager collectively own approximately 81% of the outstanding equity interests of Sera. Investment discretion with respect to the shares held by Sera is shared with individuals not affiliated with the Reporting Manager.
Report Type (Check only one.):
X 13F HOLDINGS REPORT. (Check here if all holdings of this reporting manager are reported in this report.)
   13F NOTICE. (Check here if no holdings reported are in this report, and all holdings are reported by other reporting manager(s).)
   13F COMBINATION REPORT. (Check here if a portion of the holdings for this reporting manager are reported in this report and a portion are reported by other reporting manager(s).)
Form 13F Summary Page
Report Summary:
Number of Other Included Managers: 0
Form 13F Information Table Entry Total: 79
Form 13F Information Table Value Total: 7,560,766,669
(round to nearest dollar)
List of Other Included Managers:
Provide a numbered list of the name(s) and Form 13F file number(s) of all institutional investment managers with respect to which this report is filed, other than the manager filing this report.
[If there are no entries in this list, state “NONE” and omit the column headings and list entries.]
NONE