Diversified Energy Co.

DEC·NYSE·$15.11Share Price as of 11/2·$1BMarket Cap as of 11/2

Financials

10-QQ2 ended 06/30/2608/05/26 10-QQ1 ended 03/31/2605/06/26 10-KFY 202502/26/26 20-FAnnual report (foreign)03/17/25 20-FAnnual report (foreign)03/19/24

Disclosures

8-K/ACurrent report (amended)09/18/26 8-KCurrent report09/09/26 8-KCurrent report09/03/26 8-KCurrent report08/14/26 8-KCurrent report08/10/26

Prospectuses and Registrations

424B7Prospectus03/11/26 424B7Prospectus03/10/26 S-3ASRAutomatic shelf registration03/09/26 S-8Registration of securities for employees11/25/25 S-8 POSPost-effective amendment (S-8)11/25/25

Proxies

DEF 14ADefinitive proxy03/24/26 DEFA14AAdditional proxy materials03/24/26

Ownership

Form 4Insider transaction10/01/26 Form 4Insider transaction10/01/26 Form 4Insider transaction10/01/26 Form 4Insider transaction10/01/26 Form 4Insider transaction10/01/26

Other

SDConflict Minerals disclosure09/28/26 ARSAnnual report to shareholders03/24/26 15-12GCertification of termination of registration12/04/25 25-NSERemoval from listing11/24/25 8-K12BCurrent report11/24/25