Peter Oluoch Owino - 01 Sep 2026 Form 4 Insider Report for Arq, Inc. (ARQ)

Reporting relationship: Chief Accounting Officer
Issuer ticker: ARQ
Reported as of: 01 Sep 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 03 Sep 2026, 17:32:56 UTC
Prior SEC filing: 24 Jun 2026
Source filing: View source filing
Reporting owner signature: /s/ Peter Oluoch Owino

Key filing fact

Peter Oluoch Owino filed Form 4 for Arq, Inc. (ARQ) on 03 Sep 2026.

Key facts

This page summarizes Peter Oluoch Owino's Form 4 filing for Arq, Inc. (ARQ).
3 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 03 Sep 2026, 17:32.

Change

Previous filing in this sequence was filed on 24 Jun 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0002141907 Primary reporting owner

Owino Peter Oluoch

Relationship: Chief Accounting Officer
Address: 8051 E MAPLEWOOD AVE, STE 210, GREENWOOD VILLAGE
Signature: /s/ Peter Oluoch Owino
Signature date: 03 Sep 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

ARQ transaction

Common Stock

Award

Transaction value
Shares: +100,000
Change %
Price: $0.000000^*
Shares after: 100,000
Date: 01 Sep 2026
Ownership: Direct
Footnotes: F1

ARQ transaction

Common Stock

Award

Transaction value
Shares: +61,047
Change %: +61%
Price: $0.000000^*
Shares after: 161,047
Date: 01 Sep 2026
Ownership: Direct
Footnotes: F2

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

ARQ transaction Derivative

Performance Share Units

Award

Transaction value
Shares: +61,047
Change %
Price: $0.000000^*
Shares after: 61,047
Date: 01 Sep 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 122,094
Exercise price
Footnotes: F3, F4, F5

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 5 footnotes

Footnote F1

Represents restricted stock awards ("RSAs") granted to Mr. Owino as an employment inducement award. 33,333 RSAs will vest on each of September 1, 2027 and September 1, 2028, and 33,334 RSAs will vest on September 1, 2029.

Footnote F2

Represents RSAs granted in accordance with the Issuer's long-term incentive plan under the Issuer's 2026 Omnibus Incentive Plan, approved by stockholders on June 10, 2026. The RSAs shall vest in three equal installments, on each of September 1, 2027, March 23, 2028, and March 23, 2029.

Footnote F3

Represents performance share units ("PSUs") granted in accordance with the Issuer's long-term incentive plan under the Issuer's 2026 Omnibus Incentive Plan.

Footnote F4

Each PSU represents a contingent right to receive one share of the Issuer's common stock upon vesting of the PSU, which will occur, if at all, no later than March 15, 2029 subject to the reporting person's continuous service with the Issuer or its related entities and the achievement of certain pre-established goals to be measured as of December 31, 2028.

Footnote F5

Represents the maximum number of PSUs that will vest, if at all, which is 200% of the target award.