secwatch.observer — SEC 8-K summary
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Issuer:     Arq, Inc. (ARQ)
CIK:        0001515156
Form:       8-K
Filed at:   2026-05-01T23:59:59+00:00
Accession:  0001515156-26-000057
Event type: leadership
Sentiment:  neutral
Materiality: 0.60
Item codes: 5.02, 9.01
LLM model:  deepseek-v4-flash:cloud@v2

Arq finalizes separation agreements with former COO and CFO, including cash severance and equity acceleration
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- COO Williamson receives 12 months' base salary (~$361,500), COBRA lump-sum, accelerated vesting of 34,270 restricted stock and 49,736 PSUs.
- CFO Voncannon gets accelerated vesting of 50,000 restricted shares; no additional cash severance beyond statutory COBRA.
- Both departures effective April 18, 2026; separation agreements became effective April 29, 2026 after revocation period.

Source:
  EDGAR index:    https://www.sec.gov/Archives/edgar/data/1515156/000151515626000057/0001515156-26-000057-index.htm
  Primary doc:    https://www.sec.gov/Archives/edgar/data/1515156/000151515626000057/ades-20260429.htm
  HTML page:      https://secwatch.observer/filing/0001515156-26-000057

License: Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer