Arq changes auditor to Baker Tilly after Moss Adams merger

Arq, Inc.

Moss Adams merged with Baker Tilly effective June 3, 2025; Moss Adams resigned as auditor.
Audit committee approved Baker Tilly as successor independent registered public accounting firm.
No disagreements or reportable events occurred during Moss Adams' tenure or interim period.
Moss Adams' letter to the SEC agreeing with disclosures is filed as Exhibit 16.1.

item 4.01item 9.01

This headline and bullets were generated automatically by deepseek-v4-flash:cloud@v2 from the public filing. Read the source on SEC.gov before relying on any specific claim. Not investment advice. See methodology for how this pipeline works.