Arq, Inc.

ARQ·NASDAQ·$2.49Share Price as of 11/2·$107MMarket Cap as of 11/2

Financials

10-QQ2 ended 06/30/2608/10/26 10-QQ1 ended 03/31/2605/06/26 10-KFY 202503/10/26 10-QQ3 ended 09/30/2511/05/25 10-QQ2 ended 06/30/2508/11/25

Disclosures

8-KCurrent report08/28/26 8-KCurrent report08/10/26 8-KCurrent report07/23/26 8-KCurrent report07/02/26 8-KCurrent report06/18/26

Prospectuses and Registrations

S-8Registration of securities for employees09/17/26 S-8Registration of securities for employees06/26/26 424B5Prospectus supplement09/20/24 424B5Prospectus supplement09/19/24 S-3Shelf registration08/23/24

Proxies

DEF 14ADefinitive proxy04/28/26 DEFA14AAdditional proxy materials04/28/26 PRE 14APreliminary proxy04/17/26 DEF 14ADefinitive proxy04/21/25 DEFA14AAdditional proxy materials04/21/25

Ownership

Form 4Insider transaction09/10/26 Form 4Insider transaction09/09/26 Form 4Insider transaction09/08/26 Form 4Insider transaction09/03/26 Form 4Insider transaction08/18/26

Other

ARSAnnual report to shareholders04/28/26 8-A12B/A8-A12B/A04/17/26 ARSAnnual report to shareholders04/21/25 8-A12B/A8-A12B/A04/11/25 EFFECTRequest for effectiveness09/04/24