As of November 6, 2026, 5 holders' latest Schedule 13D or 13G filings report owning 5% or more of CO2 Energy Transition Corp. The largest reported stake is Karpus Management, Inc.'s, at 18.04%. 9 filings are on record since August 12, 2025 (Schedule 13G/A, August 7, 2026).
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Key facts
- · Reporting person: Karpus Management, Inc. · Sole voting: 670,404 · Shared voting: 0 · Sole dispositive: 670,404 · Shared dispositive: 0 · SCHEDULE 13G/A, 2026-08-07
- · Holder: Barclays PLC · Percent: 5.23% · SCHEDULE 13G
- · Holder: Td Securities (Usa) LLC · Percent: 5.3% · SCHEDULE 13G
- · Holder: MMCAP International Inc. SPC · Percent: 6.3% · SCHEDULE 13G/A
- · Holder: Barclays PLC · Percent: 2.92% · SCHEDULE 13G/A
CO2 Energy Transition Corp. has 9 Schedule 13D or 13G filings on record since 2025-08-12. 5 holders' latest filing reports 5% or more of common. Each figure below is the holder's own, as filed, with the filing linked.
Holders
| Holder | Percent | Shares | Latest | Event date |
|---|---|---|---|---|
| Karpus Management, Inc. | 18.04% | 670,404 | SCHEDULE 13G/A, 2026-08-07 | 2026-07-31 |
| Mizuho Financial Group, Inc. | 8.7% | 838,309 | SCHEDULE 13G/A, 2025-08-13 | 2025-06-30 |
| MMCAP International Inc. SPC | 6.3% | 590,000 | SCHEDULE 13G/A, 2026-02-13 | 2025-12-31 |
| Td Securities (Usa) LLC | 5.3% | 511,082 | SCHEDULE 13G, 2026-02-13 | 2025-12-31 |
| Barclays PLC | 5.23% | 501,776 | SCHEDULE 13G, 2026-05-14 | 2026-03-31 |
| Rivernorth Capital Management, LLC | 0% | 0 | SCHEDULE 13G/A, 2025-11-14 | 2025-09-30 |
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More on CO2 Energy Transition Corp. and the records around it.
CO2 Energy Transition Corp. elsewhere on the record
- Leadership changes Jul 2026
Companies that share a holder
- RIVERNORTH CAPITAL MANAGEMENT, LLC also filed stake reports on 23 other companies: FG Merger II Corp. (Oct 2026), YHN Acquisition I Ltd (Oct 2026), BLACKROCK MUNIYIELD QUALITY FUND III, INC. (Aug 2026)
- TD SECURITIES (USA) LLC also filed stake reports on 27 other companies: Cal Redwood Acquisition Corp. (Aug 2026), CANTOR EQUITY PARTNERS III, INC. (Aug 2026), GigCapital7 Corp. (Aug 2026)
- MMCAP International Inc. SPC also filed stake reports on 52 other companies: BHAV Acquisition Corp II (Nov 2026), Haymaker Acquisition Corp V (Sep 2026), Thunder Bridge Capital Partners V, Ltd. (Aug 2026)
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What the Full Report on CO2 Energy Transition Corp. covers
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Voting and dispositive power, as filed
| Reporting person | Sole voting | Shared voting | Sole dispositive | Shared dispositive | Filing |
|---|---|---|---|---|---|
| Karpus Management, Inc. | 670,404 | 0 | 670,404 | 0 | SCHEDULE 13G/A, 2026-08-07 |
The latest filing identifies CO2 Energy Transition Corp. by CUSIP 12664M103 and gives its principal executive office as 1334 Brittmoore Road, Suite 190, Houston, TX 77043 (SCHEDULE 13G/A, 2026-08-07).
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2025-08-12 | MMCAP International Inc. SPC | 6.16% | SCHEDULE 13G/A |
| 2025-08-13 | Mizuho Financial Group, Inc. | 8.7% | SCHEDULE 13G/A |
| 2025-08-14 | Rivernorth Capital Management, LLC | 5.98% | SCHEDULE 13G |
| 2025-11-14 | Rivernorth Capital Management, LLC | 0% | SCHEDULE 13G/A |
| 2026-02-11 | Barclays PLC | 2.92% | SCHEDULE 13G/A |
| 2026-02-13 | Td Securities (Usa) LLC | 5.3% | SCHEDULE 13G |
| 2026-02-13 | MMCAP International Inc. SPC | 6.3% | SCHEDULE 13G/A |
| 2026-05-14 | Barclays PLC | 5.23% | SCHEDULE 13G |
| 2026-08-07 | Karpus Management, Inc. | 18.04% | SCHEDULE 13G/A |
Questions about who owns CO2 Energy Transition Corp.
Who owns CO2 Energy Transition Corp.?
On this page, 5 holders' latest ownership filings report 5% or more of CO2 Energy Transition Corp.: Karpus Management, Inc. (18.04%, Schedule 13G/A, filed 2026-08-07), Mizuho Financial Group, Inc. (8.7%, Schedule 13G/A, filed 2025-08-13), MMCAP International Inc. SPC (6.3%, Schedule 13G/A, filed 2026-02-13), Td Securities (Usa) LLC (5.3%, Schedule 13G, filed 2026-02-13) and Barclays PLC (5.23%, Schedule 13G, filed 2026-05-14).
Who are the largest shareholders of CO2 Energy Transition Corp.?
By the share each holder's latest filing reports, the largest holders of CO2 Energy Transition Corp. on this page are Karpus Management, Inc. (18.04%), Mizuho Financial Group, Inc. (8.7%) and MMCAP International Inc. SPC (6.3%).
When did Karpus Management, Inc. buy into CO2 Energy Transition Corp.?
The filings give report dates, not purchase dates. The earliest filing from Karpus Management, Inc. on this page is the Schedule 13G/A, filed 2026-08-07, reporting 18.04%. That earliest filing is itself an amendment, which updates an earlier report.
Is this an audit or a full list?
Neither. The ownership list on this page covers only Schedule 13D and 13G filings, which holders make once they own 5% or more of a class of shares (an amendment can report a stake that has since fallen below 5%); 9 such filings are shown here. It is not an audit and not a full cap table: holders who never reached 5% are not listed, and a stake can change after its latest filing.
Also on the record for CO2 Energy Transition Corp.
| Date | Record | Figure | Our page | Source |
|---|---|---|---|---|
| July 31, 2026 | Leadership change: Charles Fox appointed, President and Chief Executive Officer | — | Leadership changes | Source |
| October 25, 2024 | IPO filing, Form S-1/A | — | IPO filings | Source |
| October 23, 2024 | IPO filing, Form S-1/A | — | IPO filings | Source |
| September 5, 2024 | IPO filing, Form S-1/A | — | IPO filings | Source |
| August 23, 2024 | IPO filing, Form S-1/A | — | IPO filings | Source |
| July 26, 2024 | IPO filing, Form S-1/A | — | IPO filings | Source |
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Where this comes from
Anyone who comes to own more than 5% of a class of a listed company's voting shares has to tell the SEC. A holder who may seek to change or influence the company files Schedule 13D, and has to say in Item 4, "Purpose of Transaction", what it intends to do. A holder with no such intent, such as many index and passive funds, may file the shorter Schedule 13G. Both are amended when the stake changes, including when it falls below 5%.
Every row here is one of those filings, linked to the filing itself. Percentages and share counts are exactly as the holder filed them, for the holder the filing names; an amendment showing a lower figure is shown as filed. Item 4 text is quoted word for word. Where a 13D's Item 4 contains a sentence stating a definite intent to influence the company, that sentence is marked and quoted; the page does not describe the holder or its motives beyond the words it filed. Nothing here is investment advice.