Latest Period
Q1 2026
Security Snapshot
Montauk Renewables, Inc. - Common Stock (MNTK) Institutional Ownership
CUSIP: 61218C103
13F Institutional Holders and Ownership History from Q1 2021 to Q2 2026
Institutions Reporting
93
Shares (Excl. Options)
20,808,993
Price
$1.15
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- Security type / class
- Equity / Common Stock
- Symbol
- MNTK on Nasdaq
- All holders as of 31 Mar 2026
- Q1 2026
- Total 13F shares
- 20,808,993
- Total 13F value
- $23,972,870
- Portfolio coverage rank
- 0%
- Share change
- +908,858
- Value change
- +$863,520
- Number of holders
- 93
- Shares outstanding
- 142,023,490
- SEC-reported price per share
- $1.61
- Insider filing price
- $1.61
Latest holder snapshot
5 signals
Issuer context
Names, identifiers, and filing context for this profile.
3 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Key facts
- MNTK - Montauk Renewables, Inc. - Common Stock is tracked under CUSIP 61218C103.
- 93 institutions reported positions in Q1 2026.
- 2 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 93 to 33 between Q1 2026 and Q2 2026.
- SEC-reported value moved from $23,972,870 to $14,415,634.
Research use
- 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.
Evidence
Source: SEC Form 13F
Open SEC evidence
Latest holder context comes from 93 institutions filings for Q1 2026.
Security key
61218C103
Latest holder period
Q1 2026
13F holders
93
13D/G owners
2
CIK / CUSIP context first
Open Q1 2026 holders
MNTK full holder history
Montauk Renewables, Inc. SEC filings
Montauk Renewables, Inc. company facts
Montauk Renewables, Inc. insider transactions
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 61218C103:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
2
Security
MNTK
| 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 Mar 2026, 93 institutional investors reported holding 20,808,993 shares of Montauk Renewables, Inc. - Common Stock (MNTK). This represents 15% of the company’s total 142,023,490 outstanding shares.
13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
14%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| BlackRock, Inc. | 3% | 4,218,997 | -2.4% | 0% | $4,851,846 |
| VANGUARD CAPITAL MANAGEMENT LLC | 1.9% | 2,688,714 | 0% | 0% | $3,092,021 |
| GEODE CAPITAL MANAGEMENT, LLC | 1.2% | 1,759,278 | +2% | 0% | $2,023,613 |
| Baader Bank Aktiengesellschaft | 1.1% | 1,605,000 | 0% | 0.18% | $1,845,750 |
| STATE STREET CORP | 0.96% | 1,365,473 | -1.5% | 0% | $1,570,294 |
| BARCLAYS PLC | 0.73% | 1,038,917 | +850% | 0% | $1,194,755 |
| AMERICAN CENTURY COMPANIES INC | 0.67% | 954,468 | -0.07% | 0% | $1,097,638 |
| DIMENSIONAL FUND ADVISORS LP | 0.52% | 736,584 | -12% | 0% | $847,298 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 0.37% | 520,611 | -4.4% | 0% | $598,703 |
| NORTHERN TRUST CORP | 0.36% | 505,374 | +8.5% | 0% | $581,179 |
| VANGUARD FIDUCIARY TRUST CO | 0.3% | 432,268 | 0% | 0% | $497,108 |
| Hosking Partners LLP | 0.28% | 396,932 | +0.17% | 0.02% | $456,472 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 0.27% | 388,919 | 0% | 0% | $447,257 |
| RENAISSANCE TECHNOLOGIES LLC | 0.25% | 354,600 | +3.5% | 0% | $407,790 |
| GOLDMAN SACHS GROUP INC | 0.23% | 331,189 | +69% | 0% | $380,867 |
| FIRST TRUST ADVISORS LP | 0.22% | 311,950 | -7.8% | 0% | $358,742 |
| GSA CAPITAL PARTNERS LLP | 0.2% | 289,894 | +19% | 0.02% | $333,000 |
| MORGAN STANLEY | 0.18% | 261,398 | -20% | 0% | $300,607 |
| MILLENNIUM MANAGEMENT LLC | 0.15% | 206,854 | +706% | 0% | $237,882 |
| MARSHALL WACE, LLP | 0.14% | 204,636 | 0% | $235,331 | |
| JTC Employer Solutions Trustee Ltd | 0.14% | 197,859 | 0% | 0.02% | $217,000 |
| Bank of New York Mellon Corp | 0.14% | 195,907 | -6.5% | 0% | $225,293 |
| JPMORGAN CHASE & CO | 0.11% | 162,252 | -5.8% | 0% | $193,080 |
| Nuveen, LLC | 0.1% | 139,608 | +0.62% | 0% | $160,550 |
| D. E. Shaw & Co., Inc. | 0.08% | 118,256 | -39% | 0% | $135,994 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
22
Latest
Q1 2026
Rows shown
1-22 of 22
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q2 | 9,238,755 | $14,415,634 | +$895,722 | $1.56 | 33 |
| 2026 Q1 | 20,808,993 | $23,972,870 | +$863,520 | $1.15 | 93 |
| 2025 Q4 | 19,895,013 | $33,278,695 | -$1,462,468 | $1.67 | 81 |
| 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 |