Arq Inc
Ownership
Ownership Structure
Who owns Arq Inc (ARQ)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 74.6% of the shares are freely tradable; institutional investors hold 35.5%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 4.80 | 2,097,522 | +2.5 | 03/31/2026 |
| Royce & Associates, LP | 4.00 | 1,748,444 | +19.9 | 03/31/2026 |
| Vanguard Capital Management, LLC | 3.28 | 1,431,450 | +0.0 | 03/31/2026 |
| AQR Capital Management LLC | 2.49 | 1,085,710 | +262.2 | 03/31/2026 |
| Marshall Wace Asset Management Ltd | 1.85 | 809,705 | +82.3 | 03/31/2026 |
| Geode Capital Management, LLC | 1.83 | 801,231 | +3.0 | 03/31/2026 |
| Peapod Lane Capital LLC | 1.80 | 787,880 | +1.6 | 06/30/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Vanguard MStar Total Stk Mkt Idx Invest | 2.42 | 1,056,800 | +0.0 | 07/31/2026 |
| Royce Small-Cap Opportunity Invmt | 2.08 | 910,377 | +1.2 | 06/30/2026 |
| FTGF RY US SmCp Opp A USD Dis(A) | 2.08 | 910,010 | +0.0 | 06/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider holdings
| Person | Role | Shares | Value | As of | Type |
|---|---|---|---|---|---|
| Wong Joseph M | Chief Technology Officer | 506,648 | 1,063,961 $ | Aug 14, 2026 | direct |
| Steinmetz Shimon | Chief Financial Officer | 368,023 | 772,848 $ | Sep 8, 2026 | both |
| Owino Peter Oluoch | Chief Accounting Officer | 161,047 | 338,199 $ | Sep 1, 2026 | direct |
| Smith Claiborne Benson | Gen Counsel, Corp Secretary | 155,513 | 326,577 $ | Aug 1, 2026 | direct |
Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.
Insiders
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Sep 8, 2026 | Steinmetz Shimon | Chief Financial Officer | Buy | 1,874 | 2.34 | 4,384 |
| Sep 8, 2026 | Steinmetz Shimon | Chief Financial Officer | Buy | 1,098 | 2.34 | 2,569 |
| Sep 4, 2026 | Steinmetz Shimon | Chief Financial Officer | Buy | 4,356 | 2.27 | 9,904 |
| Sep 4, 2026 | Steinmetz Shimon | Chief Financial Officer | Buy | 1,402 | 2.29 | 3,209 |
| Sep 3, 2026 | Steinmetz Shimon | Chief Financial Officer | Buy | 8,770 | 2.23 | 19,514 |
| Sep 3, 2026 | Steinmetz Shimon | Chief Financial Officer | Buy | 7,500 | 2.22 | 16,634 |
| Sep 1, 2026 | Owino Peter Oluoch | Chief Accounting Officer | Other | 61,047 | 0.00 | – |
| Sep 1, 2026 | Owino Peter Oluoch | Chief Accounting Officer | Other | 100,000 | 0.00 | – |
| Aug 14, 2026 | Wong Joseph M | Chief Technology Officer | Other | 55,000 | 0.00 | – |
| Aug 1, 2026 | Steinmetz Shimon | Chief Financial Officer | Other | 93,023 | 0.00 | – |
| Aug 1, 2026 | Smith Claiborne Benson | Gen Counsel, Corp Secretary | Other | 61,047 | 0.00 | – |
| Aug 1, 2026 | Wong Joseph M | Chief Technology Officer | Other | 61,047 | 0.00 | – |
| Jul 31, 2026 | Steinmetz Shimon | Chief Financial Officer | Other | 250,000 | 0.00 | – |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →
Data as of: September 18, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.