Security Snapshot

Arq, Inc. - Common Stock, $0.001 par value (ARQ) Institutional Ownership

CUSIP: 00770C101

13F Institutional Holders and Ownership History from Q1 2014 to Q1 2026

Latest Period

Q4 2025

Institutions Reporting

100

Shares (Excl. Options)

15,856,224

Price

$3.27

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Type / Class
Equity / Common Stock, $0.001 par value
Symbol
ARQ on Nasdaq
Shares outstanding
42,798,398
Price per share
$2.56
All holders as of 31 Dec 2025
Q4 2025
Total 13F shares
15,856,224
Total reported value
$51,850,430
% of total 13F portfolios
0%
Share change
-1,482,710
Value change
-$12,662,729
Number of holders
100
Price from insider filings
$2.56
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors

Quick Takeaways

  • ARQ - Arq, Inc. - Common Stock, $0.001 par value is tracked under CUSIP 00770C101.
  • 100 institutions reported positions in Q4 2025.
  • 2 significant owners is listed from Schedule 13D/13G reporting.

What Changed

  • Holder count moved from 100 to 10 between Q4 2025 and Q1 2026.
  • Reported value moved from $51,850,430 to $93,728.

Why This Matters

  • You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
  • 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.

Source Evidence

Source: SEC Form 13F

Latest holder context comes from 100 institutions filings for Q4 2025.

Open SEC Evidence

Investment Quick Answers

What is CUSIP 00770C101?
CUSIP 00770C101 identifies ARQ - Arq, Inc. - Common Stock, $0.001 par value in SEC 13F datasets.

Where can I see the latest institutional holders?
Review the Q4 2025 holders report and the ownership history table below.

Significant Owners of Arq, Inc. - Common Stock, $0.001 par value (ARQ) based on Schedule 13D/G filings

Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
HIRSCHMAN ORIN 5.8% -20% $8,107,928 -$1,778,484 2,470,950 -18% Orin Hirschman 31 Dec 2025
Kaufman Daniel Louis 5.1% $8,436,420 2,191,278 Daniel Kaufman 11 Mar 2026

As of 31 Dec 2025, 100 institutional investors reported holding 15,856,224 shares of Arq, Inc. - Common Stock, $0.001 par value (ARQ). This represents 37% of the company’s total 42,798,398 outstanding shares.

Top 25 Institutional Shareholders

The largest institutional shareholders of Arq, Inc. - Common Stock, $0.001 par value (ARQ) together control 33% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.

Institution Ownership % Shares Held Share Change % Portfolio % Holdings Value
AIGH Capital Management LLC 5.3% 2,273,092 -12% 2.2% $7,433,010
BlackRock, Inc. 4.8% 2,045,938 +1.9% 0% $6,690,217
VANGUARD GROUP INC 4.3% 1,830,017 +5.5% 0% $5,984,156
ROYCE & ASSOCIATES LP 3.4% 1,458,444 +6.2% 0.05% $4,769,112
DIMENSIONAL FUND ADVISORS LP 2.1% 919,640 +7.4% 0% $3,007,041
Alta Fundamental Advisers LLC 1.8% 781,088 -7.7% 1.2% $2,554,158
GEODE CAPITAL MANAGEMENT, LLC 1.8% 778,142 +0.45% 0% $2,544,974
STATE STREET CORP 1.3% 561,888 +0.97% 0% $1,837,374
MARSHALL WACE, LLP 1% 444,207 0% $1,452,556
RENAISSANCE TECHNOLOGIES LLC 0.96% 412,299 +486% 0% $1,348,218
MORGAN STANLEY 0.85% 362,538 +23% 0% $1,185,500
AQR CAPITAL MANAGEMENT LLC 0.7% 299,787 0% $980,304
JACOBS LEVY EQUITY MANAGEMENT, INC 0.61% 262,330 0% $857,819
DCF Advisers, LLC 0.61% 260,570 0.28% $852,064
Peapod Lane Capital LLC 0.53% 228,564 0.64% $747,404
NORTHERN TRUST CORP 0.47% 200,769 -15% 0% $656,515
Marex Group plc 0.44% 190,000 -24% 0.01% $621,300
GSA CAPITAL PARTNERS LLP 0.38% 161,836 0.05% $529,000
GRATIA CAPITAL, LLC 0.36% 155,000 -65% 0.45% $506,850
GOLDMAN SACHS GROUP INC 0.3% 129,537 +27% 0% $423,586
LAZARD ASSET MANAGEMENT LLC 0.26% 110,783 0% $362,260
CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.23% 99,993 +13% 0% $326,977
AMERICAN CENTURY COMPANIES INC 0.2% 84,356 +4.8% 0% $275,844
MILLENNIUM MANAGEMENT LLC 0.19% 80,093 -39% 0% $261,904
BANK OF AMERICA CORP /DE/ 0.19% 79,604 +12% 0% $260,305

Institutional Holders of Arq, Inc. - Common Stock, $0.001 par value (ARQ) across Reporting Periods

Period Reported Shares, Excl. Options Value, Excl. Options Value Change Price (Median) Investors
2026 Q1 37,108 $93,728 -$135,191 $2.56 10
2025 Q4 15,856,224 $51,850,430 -$12,662,729 $3.27 100
2025 Q3 17,776,479 $127,280,438 +$9,536,364 $7.16 92
2025 Q2 16,454,807 $88,364,829 -$1,102,972 $5.37 81
2025 Q1 16,484,023 $68,740,521 -$2,947,794 $4.17 87
2024 Q4 16,302,847 $123,413,734 +$7,833,656 $7.57 89
2024 Q3 15,698,650 $92,150,824 +$25,544,894 $5.87 85
2024 Q2 11,246,225 $68,265,687 +$25,817,270 $6.07 70
2024 Q1 6,978,341 $45,241,610 +$5,670,507 $6.48 57
2023 Q4 6,135,655 $18,282,559 +$516,652 $2.98 44
2023 Q3 5,949,324 $10,589,332 +$482,733 $1.78 38
2023 Q2 5,671,910 $10,547,165 -$451,483 $1.86 35
2023 Q1 5,906,108 $11,694,316 -$1,030,803 $1.98 36
2022 Q4 6,375,876 $15,491,285 -$1,167,657 $2.43 41
2022 Q3 6,756,434 $18,439,278 -$1,694,760 $2.73 47
2022 Q2 7,123,555 $33,408,814 -$2,946,337 $4.69 54
2022 Q1 7,788,287 $48,435,821 -$3,593,296 $6.22 67
2021 Q4 8,346,783 $55,247,357 +$845,896 $6.62 66
2021 Q3 8,222,639 $52,541,345 -$7,744,877 $6.39 63
2021 Q2 9,360,167 $69,306,279 -$10,220,071 $7.41 73
2021 Q1 11,466,254 $63,063,036 -$3,629,729 $5.50 62
2020 Q4 12,107,401 $66,588,886 +$4,250,656 $5.50 57
2020 Q3 11,349,903 $46,078,765 -$924,388 $4.06 61
2020 Q2 11,492,528 $55,428,214 -$5,695,927 $4.85 67
2020 Q1 12,331,427 $81,014,084 -$3,635,599 $6.57 75
2019 Q4 12,775,012 $134,156,484 -$3,709,499 $10.50 73
2019 Q3 13,052,898 $193,682,224 -$2,030,961 $14.84 82
2019 Q2 13,278,341 $167,851,568 -$3,957,875 $12.64 76
2019 Q1 13,660,559 $157,912,971 +$5,428,225 $11.56 60
2018 Q4 13,224,013 $139,508,408 -$16,818,615 $10.55 59
2018 Q3 14,683,862 $175,619,999 -$5,561,930 $11.96 66
2018 Q2 15,157,110 $172,188,312 +$2,250,045 $11.36 65
2018 Q1 14,962,052 $170,865,784 +$3,461,595 $11.42 58
2017 Q4 14,730,155 $142,292,098 -$3,769,922 $9.66 54
2017 Q3 15,027,339 $164,844,680 +$6,145,991 $10.97 59
2017 Q2 14,551,195 $133,289,800 +$1,835,211 $9.16 49
2017 Q1 14,335,780 $136,760,000 +$16,561,501 $9.54 36
2016 Q4 13,463,014 $124,398,000 +$4,208,931 $9.24 30
2016 Q3 13,012,616 $97,854,000 +$90,532,684 $7.52 29
2016 Q2 973,982 $6,917,000 $7.11 4
2016 Q1 973,982 $6,477,000 -$1,000 $6.63 4
2015 Q4 974,002 $6,954,000 -$35,714 $7.14 4
2015 Q3 979,002 $6,461,000 -$159,684 $6.60 4
2015 Q2 992,008 $12,896,778 -$3,119,827 $13.00 6
2015 Q1 1,166,209 $20,035,341 -$291,444,197 $17.10 9
2014 Q4 13,867,653 $315,919,380 +$3,132,922 $22.79 78
2014 Q3 14,168,708 $301,901,409 +$9,873,243 $21.27 81
2014 Q2 13,336,402 $305,380,000 +$32,915,096 $22.93 83
2014 Q1 11,875,491 $290,842,922 +$127,312,333 $24.54 87