Montauk Renewables, Inc. - Common Stock (MNTK) Institutional Ownership

13F Institutional Holders and Ownership History from Q1 2021 to Q4 2025

Type / Class
Equity / Common Stock
Symbol
MNTK on Nasdaq
Shares outstanding
142,023,490
Price per share
$1.71
All holders as of 30 Sep 2025
Q3 2025
Total 13F shares
20,622,303
Total reported value
$41,452,351
% of total 13F portfolios
0%
Share change
-79,594
Value change
-$208,937
Number of holders
87
Price from insider filings
$1.71
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors

Significant Owners of Montauk Renewables, Inc. - Common Stock (MNTK) based on Schedule 13D/G filings

Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
Aktiv Investment Management (Pty) Ltd 16% $44,818,353 22,297,688 Aktiv Investment Management (Pty) Ltd 03 Nov 2025
Peresec Prime Brokers (Pty) Ltd 0.03% $72,231 35,936 Peresec Prime Brokers (Pty) Ltd 21 Nov 2025

As of 30 Sep 2025, 87 institutional investors reported holding 20,622,303 shares of Montauk Renewables, Inc. - Common Stock (MNTK). This represents 15% of the company’s total 142,023,490 outstanding shares.

Top 25 Institutional Shareholders

The largest institutional shareholders of Montauk Renewables, Inc. - Common Stock (MNTK) together control 14% 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
BlackRock, Inc. 3% 4,266,765 -2.5% 0% $8,576,197
VANGUARD GROUP INC 2.8% 3,951,495 -0.59% 0% $7,942,505
GEODE CAPITAL MANAGEMENT, LLC 1.2% 1,687,618 +0.59% 0% $3,392,888
Baader Bank Aktiengesellschaft 1.1% 1,605,000 0% 0.27% $3,226,050
STATE STREET CORP 0.98% 1,393,303 +2.3% 0% $2,800,539
DIMENSIONAL FUND ADVISORS LP 0.69% 976,038 -0.63% 0% $1,962,006
AMERICAN CENTURY COMPANIES INC 0.67% 955,111 0% 0% $1,919,773
CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.38% 545,009 +4% 0% $1,095,468
NORTHERN TRUST CORP 0.37% 527,234 +2% 0% $1,059,740
Hosking Partners LLP 0.28% 395,948 +0.05% 0.03% $795,855
FIRST TRUST ADVISORS LP 0.24% 337,560 -5.1% 0% $678,495
RENAISSANCE TECHNOLOGIES LLC 0.24% 336,400 -2.3% 0% $676,164
Bank of New York Mellon Corp 0.19% 265,973 -2.5% 0% $534,606
BARCLAYS PLC 0.17% 247,656 +58% 0% $497,788
MORGAN STANLEY 0.17% 237,081 -6.6% 0% $476,533
D. E. Shaw & Co., Inc. 0.16% 223,277 +24% 0% $448,787
GSA CAPITAL PARTNERS LLP 0.15% 212,504 -13% 0.04% $427,000
CITADEL ADVISORS LLC 0.14% 204,707 +178% 0% $411,462
MILLENNIUM MANAGEMENT LLC 0.14% 201,735 -6.6% 0% $405,487
JTC Employer Solutions Trustee Ltd 0.14% 197,859 0% 0.03% $400,000
JPMORGAN CHASE & CO 0.13% 177,855 +175% 0% $357,489
GOLDMAN SACHS GROUP INC 0.12% 165,759 +79% 0% $333,176
Nuveen, LLC 0.1% 138,750 0% 0% $278,888
RHUMBLINE ADVISERS 0.09% 125,712 +19% 0% $252,669
JANE STREET GROUP, LLC 0.07% 98,323 -8.4% 0% $197,070

Institutional Holders of Montauk Renewables, Inc. - Common Stock (MNTK) across Reporting Periods

Period Reported Shares, Excl. Options Value, Excl. Options Value Change Price (Median) Investors
2025 Q4 6,014 $10,044 +$5,272 $1.71 2
2025 Q3 20,622,303 $41,452,351 -$208,937 $2.01 87
2025 Q2 20,695,574 $45,957,924 -$1,642,514 $2.22 83
2025 Q1 21,468,259 $44,880,517 -$1,320,927 $2.09 91
2024 Q4 22,010,435 $87,637,235 -$895,881 $3.98 91
2024 Q3 21,928,678 $114,343,974 -$5,608,103 $5.21 92
2024 Q2 22,676,265 $129,333,489 -$2,140,502 $5.70 107
2024 Q1 23,218,099 $96,512,063 -$2,941,692 $4.16 106
2023 Q4 27,246 $242,762 +$3,181 $8.91 1
2023 Q3 22,671,693 $206,687,846 -$6,321,809 $9.11 93
2023 Q2 23,397,908 $174,071,735 -$4,125,980 $7.44 90
2023 Q1 23,916,560 $187,884,602 -$4,239,172 $7.87 91
2022 Q4 24,324,899 $268,304,562 +$17,523,117 $11.03 95
2022 Q3 21,991,390 $383,532,154 +$28,105,692 $17.44 86
2022 Q2 20,792,383 $208,950,950 +$68,201,813 $10.05 74
2022 Q1 13,959,178 $156,347,000 +$18,418,499 $11.20 45
2021 Q4 12,206,926 $125,148,000 +$9,002,517 $10.25 24
2021 Q3 6,244,811 $70,134,000 +$40,150,488 $11.23 19
2021 Q2 2,825,760 $22,672,000 -$12,841,487 $7.66 20
2021 Q1 3,648,931 $47,875,000 +$42,327,036 $12.08 24