DIANTHUS THERAPEUTICS

2025 ANNUAL MEETING

INVESTOR MATERIALS

ANNUAL REPORT

View our annual report summarizing our financial and operational performance for the past year.

PROXY STATEMENT

View our proxy statement outlining key information about the upcoming shareholder meeting.

REQUEST PAPER MATERIALS

Request paper copies of the above proxy materials online now, via email or via phone
by dialing 866-648-8133.

Materials
Voting

VOTING

Your vote is important! Please be sure to vote your shares online now or via phone by dialing 866-230-6343.

Annual Meeting Details

Date

May 22, 2025

Virtual Meeting

Note: You must register to be eligible to participate in the meeting.

Time

9:00 a.m. Eastern Time

ABOUT US

We envision the full potential of complement therapeutics lies within the power of selectivity. Our lead antibody, DNTH103, is purposefully engineered with extended half-life, improved potency, and high selectivity for only the active C1s complement protein that drives disease pathology – enabling less frequent and more convenient self-administered subcutaneous injections to improve the lives of patients.