InsiderTrades

Form 4 for ARQ Arq, Inc.

Accepted 2026-03-03 00:00:00 ET · period of report 2026-02-27 · accession 0001515156-26-000011 · SEC index · Original document

Summary rows

Aggregated the way they appear in lists: one row per insider, transaction code and security table.

X Filed Traded Ticker Insider Title Type Price Qty Owned ΔOwn Value
D 2026-03-03 2026-02-27 ARQ Williamson Jeremy COO M - OptEx — +68.6K 203.9K +51% —
D 2026-03-03 2026-02-27 ARQ Williamson Jeremy COO F - Tax $3.51 -18.3K 185.6K -9% -$64.2K
D 2026-03-03 2026-02-27 ARQ Williamson Jeremy COO M - OptEx $0.00 -51.5K 0 -100% $0

Purchase Sale Sale after option exercise All abbreviations

Every reported transaction

#TableSecurityDateCodeA/DSharesPriceOwned afterOwnExercise / expiryUnderlyingFootnotes
1 Common Common Stock 2026-02-27 M A 68,600 — 203,888 D — — (F1) On February 27, 2026, the Compensation Committee of the Board of Directors of the Issuer determined that of the 51,467 performance share units ("PSUs") awarded to the reporting person on March 23, 2023 pursuant to the 2023 Long Term Incentive Plan under the Issuer's 2022 Omnibus Equity Incentive Plan, 68,600 PSUs vested based on the achievement of specific performance criteria over a three year performance period ended December 31, 2025. Each vested PSU represented the right to receive one share of the Issuer's common stock.
2 Common Common Stock 2026-02-27 F D 18,282 $3.51 185,606 D — — (F2) Reflects the withholding of shares of the Issuer's common stock to satisfy tax withholding obligations in connection with the vesting of PSUs on February 27, 2026.
3 Derivative Performance Share Units 2026-02-27 M D 51,467 $0.00 0 D — · — to 2026-03-10 102,934 Common Stock (F1) On February 27, 2026, the Compensation Committee of the Board of Directors of the Issuer determined that of the 51,467 performance share units ("PSUs") awarded to the reporting person on March 23, 2023 pursuant to the 2023 Long Term Incentive Plan under the Issuer's 2022 Omnibus Equity Incentive Plan, 68,600 PSUs vested based on the achievement of specific performance criteria over a three year performance period ended December 31, 2025. Each vested PSU represented the right to receive one share of the Issuer's common stock.