Prime Medicine, Inc.

PRME·NASDAQ·$2.97Share Price as of 11/2·$536MMarket Cap as of 11/2

Financials

10-QQ2 ended 06/30/2608/06/26 10-QQ1 ended 03/31/2605/07/26 10-KFY 202503/03/26 10-QQ3 ended 09/30/2511/07/25 10-QQ2 ended 06/30/2508/07/25

Disclosures

8-KCurrent report08/06/26 8-KCurrent report07/08/26 8-KCurrent report06/08/26 8-KCurrent report05/07/26 8-KCurrent report04/16/26

Prospectuses and Registrations

POS AMPost-effective amendment03/03/26 POSASRProspectus / registration03/03/26 S-8Registration of securities for employees03/03/26 S-3ASRAutomatic shelf registration11/07/25 424B5Prospectus supplement07/31/25

Proxies

DEF 14ADefinitive proxy04/23/26 DEFA14AAdditional proxy materials04/23/26 DEF 14ADefinitive proxy07/14/25 PRE 14APreliminary proxy07/02/25 DEFA14AAdditional proxy materials05/19/25

Ownership

Form 4Insider transaction06/08/26 Form 4Insider transaction06/08/26 Form 4Insider transaction06/08/26 Form 4Insider transaction06/08/26 Form 4Insider transaction06/08/26

Other

ARSAnnual report to shareholders04/23/26 EFFECTRequest for effectiveness03/04/26 ARSAnnual report to shareholders04/22/25 EFFECTRequest for effectiveness12/20/24 CORRESPCorrespondence with the SEC12/18/24