Septerna, Inc.

SEPN·NASDAQ·$30.65Share Price as of 11/2·$1BMarket Cap as of 11/2

Financials

10-QQ2 ended 06/30/2608/10/26 10-QQ1 ended 03/31/2605/11/26 10-KFY 202503/09/26 10-QQ3 ended 09/30/2511/10/25 10-QQ2 ended 06/30/2508/11/25

Disclosures

8-KCurrent report08/25/26 8-KCurrent report08/10/26 8-KCurrent report06/30/26 8-KCurrent report05/11/26 8-KCurrent report04/13/26

Prospectuses and Registrations

S-3ASRAutomatic shelf registration03/10/26 S-8Registration of securities for employees03/09/26 S-8Registration of securities for employees03/27/25 424B4Prospectus10/25/24 S-8Registration of securities for employees10/25/24

Proxies

DEF 14ADefinitive proxy04/30/26 DEFA14AAdditional proxy materials04/30/26 DEF 14ADefinitive proxy04/29/25 DEFA14AAdditional proxy materials04/29/25

Ownership

Form 4Insider transaction10/19/26 144Proposed sale of securities10/01/26 144Proposed sale of securities10/01/26 Form 4Insider transaction09/10/26 Form 3Initial insider ownership09/03/26

Other

ARSAnnual report to shareholders04/30/26 ARSAnnual report to shareholders04/29/25 CERTCEO/CFO certification10/24/24 EFFECTRequest for effectiveness10/24/24 8-A12B8-A12B10/22/24