Mammoth Energy Services, Inc.

TUSK·NASDAQ·$3.23Share Price as of 11/2·$156MMarket Cap as of 11/2

Financials

10-QQ3 ended 09/30/2610/30/26 10-QQ2 ended 06/30/2608/07/26 10-QQ1 ended 03/31/2605/11/26 10-KFY 202503/06/26 10-QQ3 ended 09/30/2511/03/25

Disclosures

8-KCurrent report10/30/26 8-KCurrent report10/30/26 8-KCurrent report08/07/26 8-KCurrent report06/26/26 8-KCurrent report05/15/26

Prospectuses and Registrations

S-3Shelf registration06/13/24 S-8Registration of securities for employees06/12/24 S-3Shelf registration06/21/21 424B5Prospectus supplement06/28/18 424B5Prospectus supplement06/26/18

Proxies

DEF 14ADefinitive proxy05/15/26 DEFA14AAdditional proxy materials05/15/26 DEF 14ADefinitive proxy04/28/25 DEFA14AAdditional proxy materials04/28/25 DEF 14ADefinitive proxy04/29/24

Ownership

Form 4Insider transaction09/17/26 Form 4Insider transaction07/01/26 Form 4Insider transaction06/22/26 Form 4Insider transaction06/22/26 Form 4Insider transaction06/22/26

Other

ARSAnnual report to shareholders05/15/26 ARSAnnual report to shareholders04/28/25 EFFECTRequest for effectiveness06/26/24 CORRESPCorrespondence with the SEC06/24/24 UPLOADLetter from the SEC06/21/24