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Disclosery

MNTK MONTAUK RENEWABLES INC

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COMMON STOCK (common), issuer CIK 1826600

82 managers (83 13F filers) reported a position in MNTK shares at 2025-12-31, 19,895,125 shares in all. 4 filers opened a position and 12 filers sold out during the quarter.

Managers
82
13F filers
83
New
4
Added
25
Reduced
34
Sold out
12
Shares held by filers
19,895,125

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q4 2025

Filers in the available 13F reports with a share position at 2025-12-31, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
BlackRock, Inc.in group BlackRock, Inc.4,324,286$7.22M<0.01%+57,52113F-HRTimelineGroup
VANGUARD GROUP INCin group VANGUARD GROUP INC3,528,926$5.89M<0.01%-422,56913F-HRTimelineGroup
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC1,724,933$2.88M<0.01%+37,31513F-HRTimelineGroup
Baader Bank Aktiengesellschaft1,605,000$2.68M0.22%013F-HRTimeline
STATE STREET CORPin group STATE STREET CORP1,385,960$2.31M<0.01%-7,34313F-HRTimelineGroup
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC955,111$1.6M<0.01%013F-HRTimelineGroup
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP832,534$1.39M<0.01%-143,50413F-HRTimelineGroup
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co544,649$910K<0.01%-36013F-HRTimelineGroup
NORTHERN TRUST CORPin group NORTHERN TRUST CORP465,735$778K<0.01%-61,49913F-HRTimelineGroup
Hosking Partners LLP396,250$662K0.02%+30213F-HRTimeline
RENAISSANCE TECHNOLOGIES LLC342,700$572K<0.01%+6,30013F-HRTimeline
FIRST TRUST ADVISORS LPin group FIRST TRUST ADVISORS LP338,219$565K<0.01%+65913F-HRTimelineGroup
MORGAN STANLEYin group MORGAN STANLEY328,662$549K<0.01%+91,58113F-HR/ATimelineGroup
GSA CAPITAL PARTNERS LLP242,646$405K0.03%+30,14213F-HRTimeline
JTC Employer Solutions Trustee Ltd197,859$363K0.02%013F-HRTimeline
Bank of New York Mellon Corpin group Bank of New York Mellon Corp209,568$350K<0.01%-56,40513F-HRTimelineGroup
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC200,021$334K<0.01%-4,68613F-HRTimelineGroup
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC196,032$327K<0.01%+30,27313F-HR/ATimelineGroup
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.192,348$321K<0.01%-30,92913F-HRTimelineGroup
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO172,192$288K<0.01%-5,66313F-HRTimelineGroup
Nuveen, LLCin group TIAA138,750$232K<0.01%013F-HRTimelineGroup
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC130,687$229K<0.01%+32,36413F-HRTimelineGroup
BARCLAYS PLCin group BARCLAYS PLC109,376$183K<0.01%-138,28013F-HRTimelineGroup
STOREBRAND ASSET MANAGEMENT AS99,407$166K<0.01%-32,45413F-HRTimeline
ALLIANCEBERNSTEIN L.P.97,520$163K<0.01%013F-HRTimeline
RHUMBLINE ADVISERS96,708$161K<0.01%-29,00413F-HRTimeline
Rathbones Group PLC92,000$154K<0.01%013F-HR/ATimeline
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN75,049$125K<0.01%+25,64513F-HRTimelineGroup
UBS Group AGin group UBS Group AG69,056$115K<0.01%-3,47113F-HRTimelineGroup
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/59,149$98.8K<0.01%+28,41213F-HRTimelineGroup
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\47,007$78.5K<0.01%+46,78313F-HRTimelineGroup
Andina Capital Management, LLC41,572$69.4K0.04%+9,10713F-HRTimeline
TWO SIGMA INVESTMENTS, LPgroup of 2 filers holding40,015$66.8K+12,760Timeline
STRS OHIO40,000$66.8K<0.01%013F-HRTimeline
TWO SIGMA SECURITIES, LLC37,293$62.3K0.01%-10,59413F-HRTimeline
LOS ANGELES CAPITAL MANAGEMENT LLC29,205$58.7K<0.01%013F-HRTimeline
PRICE T ROWE ASSOCIATES INC /MD/33,876$57K<0.01%013F-HRTimeline
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…32,588$55.3K<0.01%-18,83513F-HRTimelineGroup
ARROWSTREET CAPITAL, LIMITED PARTNERSHIPin group ARROWSTREET CAPITAL, LIMITED …32,288$53.9K<0.01%013F-HRTimelineGroup
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.in group Mirae Asset Global Investment…32,126$53.6K<0.01%+9813F-HRTimelineGroup
INTECH INVESTMENT MANAGEMENT LLC31,486$52.6K<0.01%-25,24813F-HRTimeline
Invesco Ltd.in group Invesco Ltd.31,055$51.9K<0.01%+8,05413F-HRTimelineGroup
R Squared Ltd28,945$48.3K0.02%+4,45413F-HRTimeline
HRT FINANCIAL LP26,353$44K<0.01%new13F-HRTimeline
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC25,650$42.8K<0.01%-176,08513F-HRTimelineGroup
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …20,582$34.4K<0.01%-1,70013F-HRTimelineGroup
Police & Firemen's Retirement System of…16,326$27.3K<0.01%013F-HRTimeline
SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO…15,812$26.4K<0.01%-6,03313F-HRTimelineGroup
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC14,557$24.3K<0.01%-1,92113F-HRTimelineGroup
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS14,407$24.1K<0.01%+1,23213F-HRTimelineGroup
VOYA INVESTMENT MANAGEMENT LLCin group VOYA INVESTMENT MANAGEMENT LLC13,694$22.9K<0.01%013F-HRTimelineGroup
Engineers Gate Manager LP13,574$22.7K<0.01%-5213F-HRTimeline
NEUBERGER BERMAN GROUP LLCin group NEUBERGER BERMAN GROUP LLC12,525$20.9K<0.01%-2,09713F-HRTimelineGroup
ProShare Advisors LLC12,291$20.5K<0.01%+78513F-HRTimeline
ACADIAN ASSET MANAGEMENT LLCin group ACADIAN ASSET MANAGEMENT LLC11,932$19K<0.01%+1,55413F-HRTimelineGroup
Point72 Asset Management, L.P.in group Point72 Asset Management, L.P.10,418$17.4K<0.01%new13F-HRTimelineGroup
N.E.W. Advisory Services LLC10,000$16.7K<0.01%013F-HRTimeline
FMR LLCin group FMR LLC9,158$15.3K<0.01%+7,51213F-HRTimelineGroup
Zurcher Kantonalbank (Zurich Cantonalba…8,324$13.9K<0.01%-51113F-HRTimeline
CITIGROUP INCin group CITIGROUP INC7,263$12.1K<0.01%-6,42713F-HRTimelineGroup
Ameritas Investment Partners, Inc.in group Ameritas Investment Partners,…6,625$11.1K<0.01%013F-HRTimelineGroup
Legal & General Group Plcin group Legal & General Group Plc6,061$10.1K<0.01%013F-HRTimelineGroup
GAMMA Investing LLC6,002$10K<0.01%+3,42413F-HRTimeline
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…5,875$9.81K<0.01%-4,15713F-HRTimelineGroup
CALIFORNIA STATE TEACHERS RETIREMENT SY…4,138$6.91K<0.01%-64713F-HRTimeline
NEW YORK STATE COMMON RETIREMENT FUND3,365$5.62K<0.01%013F-HRTimeline
Sterling Capital Management LLC3,145$5.25K<0.01%-54413F-HRTimeline
AMALGAMATED BANK2,114$4K<0.01%-12113F-HRTimeline
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA2,002$3K<0.01%-37,80113F-HRTimelineGroup
TOWARZYSTWO FUNDUSZY INWESTYCYJNYCH PZU…1,200$2K<0.01%013F-HRTimeline
CWM, LLCin group CWM, LLC1,127$2K<0.01%-31113F-HRTimelineGroup
Optiver Holding B.V.in group Optiver Holding B.V.1,084$1.81K<0.01%013F-HRTimelineGroup
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…288$481<0.01%+14313F-HRTimelineGroup
EverSource Wealth Advisors, LLCin group EverSource Wealth Advisors, L…123$205<0.01%-3213F-HRTimelineGroup
ROTHSCHILD INVESTMENT LLC86$144<0.01%new13F-HRTimeline
Farther Finance Advisors, LLC60$100<0.01%013F-HRTimeline
Essential Partners LLC22$37<0.01%+113F-HRTimeline
Allworth Financial LP15$26<0.01%new13F-HRTimeline
SBI Securities Co., Ltd.14$23<0.01%-413F-HRTimeline
True Wealth Design, LLC12$21<0.01%-8013F-HRTimeline
BESSEMER GROUP INCin group BESSEMER GROUP INC90$00%013F-HRTimelineGroupValue filed as zero, left out of ratios.
Covestor Ltd22$00%-113F-HRTimelineValue filed as zero, left out of ratios.