Rhythm Pharmaceuticals, Inc.

RYTM·NASDAQ·$89.82Share Price as of 11/2·$6BMarket Cap as of 11/2

Financials

10-QQ2 ended 06/30/2608/04/26 10-QQ1 ended 03/31/2605/05/26 10-KFY 202502/26/26 10-QQ3 ended 09/30/2511/04/25 10-QQ2 ended 06/30/2508/05/25

Disclosures

8-KCurrent report08/04/26 8-KCurrent report06/25/26 8-KCurrent report06/15/26 8-KCurrent report05/05/26 8-KCurrent report04/03/26

Prospectuses and Registrations

S-8Registration of securities for employees05/05/26 S-3ASRAutomatic shelf registration02/26/26 S-8Registration of securities for employees02/26/26 S-8Registration of securities for employees01/16/26 424B5Prospectus supplement07/10/25

Proxies

DEFA14AAdditional proxy materials05/29/26 DEFA14AAdditional proxy materials05/05/26 DEF 14ADefinitive proxy04/29/26 DEF 14ADefinitive proxy04/29/25 DEFA14AAdditional proxy materials04/29/25

Ownership

SC 13GBeneficial ownership10/13/26 144Proposed sale of securities09/14/26 Form 4Insider transaction09/14/26 Form 4Insider transaction09/01/26 144Proposed sale of securities08/31/26

Other

ARSAnnual report to shareholders04/29/26 ARSAnnual report to shareholders04/29/25 ARSAnnual report to shareholders04/26/24 ARSAnnual report to shareholders04/27/23 EFFECTRequest for effectiveness11/15/21