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
$1.54
All holders as of 31 Dec 2025
Q4 2025
Total 13F shares
19,795,584
Total reported value
$33,112,648
% of total 13F portfolios
0%
Share change
-827,951
Value change
-$1,408,272
Number of holders
79
Price from insider filings
$1.54
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 31 Dec 2025, 79 institutional investors reported holding 19,795,584 shares of Montauk Renewables, Inc. - Common Stock (MNTK). This represents 14% 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 13% 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% 4,324,286 +1.3% 0% $7,221,559
VANGUARD GROUP INC 2.5% 3,528,926 -11% 0% $5,893,306
GEODE CAPITAL MANAGEMENT, LLC 1.2% 1,724,933 +2.2% 0% $2,881,251
Baader Bank Aktiengesellschaft 1.1% 1,605,000 0% 0.22% $2,680,350
STATE STREET CORP 0.98% 1,385,960 -0.53% 0% $2,314,553
AMERICAN CENTURY COMPANIES INC 0.67% 955,111 0% 0% $1,595,035
DIMENSIONAL FUND ADVISORS LP 0.59% 832,534 -15% 0% $1,390,274
CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.38% 544,649 -0.07% 0% $909,564
NORTHERN TRUST CORP 0.33% 465,735 -12% 0% $777,778
Hosking Partners LLP 0.28% 396,250 +0.08% 0.02% $661,738
RENAISSANCE TECHNOLOGIES LLC 0.24% 342,700 +1.9% 0% $572,309
FIRST TRUST ADVISORS LP 0.24% 338,219 +0.2% 0% $564,825
MORGAN STANLEY 0.23% 328,662 +39% 0% $548,866
GSA CAPITAL PARTNERS LLP 0.17% 242,646 +14% 0.03% $405,000
Bank of New York Mellon Corp 0.15% 209,568 -21% 0% $349,979
CITADEL ADVISORS LLC 0.14% 200,021 -2.3% 0% $334,035
JTC Employer Solutions Trustee Ltd 0.14% 197,859 0% 0.02% $363,000
GOLDMAN SACHS GROUP INC 0.14% 196,032 +18% 0% $327,373
D. E. Shaw & Co., Inc. 0.14% 192,348 -14% 0% $321,221
JPMORGAN CHASE & CO 0.12% 172,192 -3.2% 0% $287,561
Nuveen, LLC 0.1% 138,750 0% 0% $231,712
JANE STREET GROUP, LLC 0.09% 130,687 +33% 0% $228,868
BARCLAYS PLC 0.08% 109,376 -56% 0% $182,658
ALLIANCEBERNSTEIN L.P. 0.07% 97,520 0% 0% $162,858
RHUMBLINE ADVISERS 0.07% 96,708 -23% 0% $161,491

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 19,795,584 $33,112,648 -$1,408,272 $1.67 79
2025 Q3 20,622,303 $41,452,351 -$208,935 $2.01 87
2025 Q2 20,695,574 $45,957,924 -$1,642,511 $2.22 83
2025 Q1 21,468,259 $44,880,550 -$1,321,297 $2.09 91
2024 Q4 22,011,635 $87,642,404 -$895,518 $3.98 92
2024 Q3 21,929,878 $114,349,758 -$5,659,702 $5.21 93
2024 Q2 22,686,719 $129,392,698 -$2,173,696 $5.70 109
2024 Q1 23,240,631 $96,605,666 -$2,568,239 $4.16 110
2023 Q4 23,478,789 $209,338,351 +$6,925,919 $8.91 102
2023 Q3 22,682,604 $206,787,455 -$5,960,956 $9.11 93
2023 Q2 23,403,001 $174,364,013 -$3,833,385 $7.44 91
2023 Q1 23,916,560 $187,884,179 -$4,238,954 $7.87 91
2022 Q4 24,350,029 $268,581,703 +$17,524,269 $11.03 96
2022 Q3 22,579,480 $393,788,421 +$32,583,731 $17.44 89
2022 Q2 20,792,383 $208,950,950 +$68,201,665 $10.05 74
2022 Q1 13,959,178 $156,347,000 +$18,420,249 $11.20 45
2021 Q4 12,313,711 $126,243,000 +$10,097,162 $10.25 26
2021 Q3 6,244,698 $70,133,000 +$39,931,143 $11.23 19
2021 Q2 2,825,760 $22,672,000 -$12,841,489 $7.66 20
2021 Q1 3,648,931 $47,875,000 +$42,327,000 $12.08 24