As of November 7, 2026, 4 holders' latest Schedule 13D or 13G filings report owning 5% or more of Karbon Capital Partners Corp. The largest reported stake is Karbon Capital Partners Core Holdings, LLC's, at 21.6%. 9 filings are on record since December 16, 2025 (Schedule 13D, July 24, 2026).
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Key facts
- · Reporting person: Fort Baker Capital Management LP · Sole voting: 0 · Shared voting: 1,499,756 · Sole dispositive: 0 · Shared dispositive: 1,499,756 · SCHEDULE 13G/A, 2026-08-14
- · Reporting person: Karbon Capital Partners Core Holdings, LLC · Sole voting: 0 · Shared voting: 890,000 · Sole dispositive: 0 · Shared dispositive: 890,000 · SCHEDULE 13D, 2026-07-24
- · Holder: Empyrean Capital Partners, LP · Percent: 9.18% · SCHEDULE 13G/A
- · Holder: Fort Baker Capital Management LP · Percent: 5.9% · SCHEDULE 13G
- · Holder: Millennium Management LLC · Percent: 5.1% · SCHEDULE 13G/A
Karbon Capital Partners Corp. has 9 Schedule 13D or 13G filings on record since 2025-12-16. 4 holders' latest filing reports 5% or more of class a ordinary shares, par value $0.0001 per share. Each figure below is the holder's own, as filed, with the filing linked.
Holders
| Holder | Percent | Shares | Latest | Event date |
|---|---|---|---|---|
| Karbon Capital Partners Core Holdings, LLC | 21.6% | 890,000 | SCHEDULE 13D, 2026-07-24 | 2026-06-30 |
| Empyrean Capital Partners, LP | 9.18% | 3,248,553 | SCHEDULE 13G/A, 2026-05-15 | 2026-03-31 |
| Adage Capital Management, L.P. | 7.63% | 2,700,000 | SCHEDULE 13G, 2026-02-12 | 2025-12-31 |
| Millennium Management LLC | 5.1% | 1,818,585 | SCHEDULE 13G/A, 2026-05-08 | 2026-03-31 |
| Fort Baker Capital Management LP | 4.2% | 1,499,756 | SCHEDULE 13G/A, 2026-08-14 | 2026-06-30 |
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More on Karbon Capital Partners Corp. and the records around it.
Companies that share a holder
- Empyrean Capital Partners, LP also filed stake reports on 9 other companies: Churchill Capital Corp XI (Aug 2026), Churchill Capital Corp. XII (Aug 2026), Altice USA, Inc. (Aug 2026)
- Fort Baker Capital Management LP also filed stake reports on 26 other companies: Agriculture & Natural Solutions Acquisition Corp (Aug 2026), Bleichroeder Acquisition Corp. II (Aug 2026), Cartesian Growth Corp III (Aug 2026)
- Millennium Management LLC also filed stake reports on 121 other companies: StepStone Group Inc. (Nov 2026), Catalyst Acquisition Corp. (Nov 2026), RxSight, Inc. (Nov 2026)
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Voting and dispositive power, as filed
| Reporting person | Sole voting | Shared voting | Sole dispositive | Shared dispositive | Filing |
|---|---|---|---|---|---|
| Karbon Capital Partners Core Holdings, LLC | 0 | 890,000 | 0 | 890,000 | SCHEDULE 13D, 2026-07-24 |
| Karbon Capital Partners Core Holdings II, LLC | 0 | 8,625,000 | 0 | 8,625,000 | SCHEDULE 13D, 2026-07-24 |
| Thomas F. Karam | 0 | 9,515,000 | 0 | 9,515,000 | SCHEDULE 13D, 2026-07-24 |
| Jeffrey Zajkowski | 0 | 9,515,000 | 0 | 9,515,000 | SCHEDULE 13D, 2026-07-24 |
| Fort Baker Capital Management LP | 0 | 1,499,756 | 0 | 1,499,756 | SCHEDULE 13G/A, 2026-08-14 |
| Steven Patrick Pigott | 0 | 1,499,756 | 0 | 1,499,756 | SCHEDULE 13G/A, 2026-08-14 |
| Fort Baker Capital, LLC | 0 | 1,499,756 | 0 | 1,499,756 | SCHEDULE 13G/A, 2026-08-14 |
The latest filing identifies Karbon Capital Partners Corp. by CUSIP G5225W100 and gives its principal executive office as 321 Biden Street, 12th Floor, Scranton, PA 18505 (SCHEDULE 13G/A, 2026-08-14).
Source of funds (Item 3)
The aggregate purchase price for the ordinary shares currently beneficially owned by the Reporting Persons was $8,925,000. The source of these funds was the capital of Sponsor.Karbon Capital Partners Core Holdings, LLC, SCHEDULE 13D, 2026-07-24
Purpose of Transaction (Item 4)
Karbon Capital Partners Core Holdings, LLC
On September 18, 2025, Issuer entered into a securities subscription agreement with Karbon Capital Partners CH resulting in the issuance of 8,625,000 Class B Shares. On December 12, 2025, simultaneously with the consummation of the IPO, Karbon Capital Partners CH purchased 890,000 units ("Placement Units") of the Issuer at $10.00 per Placement Unit, pursuant to a Private Placement Unit Purchase Agreement December 10, 2025 (the "Purchase Agreement"), as more fully described in Item 6 of this Schedule 13D, which information is incorporated herein by reference. Each Placement Unit consists of one Class A Share and one-fourth (1/4) of a redeemable warrant, each whole warrant exercisable to purchase one Class A Share, at an exercise price of $11.50 per share. The ordinary shares and units owned by the Reporting Persons have been acquired for investment purposes. The Reporting Persons may make further acquisitions of the Issuer's securities from time to time, however, all of such shares are subject to lock-up restrictions as further described in Item 6 below. Except for the foregoing, the Reporting Persons have no plans or proposals which relate to, or could result in, any of the matters referred to in paragraphs (a) and (c) through (j) of Item 4 of this Schedule 13D. With respect to paragraph (b) of Item 4, the Issuer is a blank check company formed for the purpose of effecting a merger, share exchange, asset acquisition, stock purchase, recapitalization, reorganization or …The first part of Item 4 of the SCHEDULE 13D filed 2026-07-24; the filing has the rest
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2025-12-16 | Millennium Management LLC | 6.4% | SCHEDULE 13G |
| 2026-02-12 | Adage Capital Management, L.P. | 7.63% | SCHEDULE 13G |
| 2026-02-17 | Karbon Capital Partners Core Holdings, LLC | 21.6% | SCHEDULE 13G |
| 2026-02-17 | Empyrean Capital Partners, LP | 7.4% | SCHEDULE 13G |
| 2026-05-08 | Millennium Management LLC | 5.1% | SCHEDULE 13G/A |
| 2026-05-15 | Empyrean Capital Partners, LP | 9.18% | SCHEDULE 13G/A |
| 2026-05-15 | Fort Baker Capital Management LP | 5.9% | SCHEDULE 13G |
| 2026-07-24 | Karbon Capital Partners Core Holdings, LLC | 21.6% | SCHEDULE 13D |
| 2026-08-14 | Fort Baker Capital Management LP | 4.2% | SCHEDULE 13G/A |
Questions about who owns Karbon Capital Partners Corp.
Who owns Karbon Capital Partners Corp.?
On this page, 4 holders' latest ownership filings report 5% or more of Karbon Capital Partners Corp.: Karbon Capital Partners Core Holdings, LLC (21.6%, Schedule 13D, filed 2026-07-24), Empyrean Capital Partners, LP (9.18%, Schedule 13G/A, filed 2026-05-15), Adage Capital Management, L.P. (7.63%, Schedule 13G, filed 2026-02-12) and Millennium Management LLC (5.1%, Schedule 13G/A, filed 2026-05-08).
Who are the largest shareholders of Karbon Capital Partners Corp.?
By the share each holder's latest filing reports, the largest holders of Karbon Capital Partners Corp. on this page are Karbon Capital Partners Core Holdings, LLC (21.6%), Empyrean Capital Partners, LP (9.18%) and Adage Capital Management, L.P. (7.63%).
When did Karbon Capital Partners Core Holdings, LLC buy into Karbon Capital Partners Corp.?
The filings give report dates, not purchase dates. The earliest filing from Karbon Capital Partners Core Holdings, LLC on this page is the Schedule 13G, filed 2026-02-17, reporting 21.6%; its latest, Schedule 13D filed 2026-07-24, reports 21.6%.
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 Karbon Capital Partners Corp.
| Date | Record | Figure | Our page | Source |
|---|---|---|---|---|
| December 12, 2025 | IPO filing, Form 424B4 | — | IPO filings | Source |
| December 8, 2025 | IPO filing, Form S-1/A | — | IPO filings | Source |
| October 15, 2025 | IPO filing, Form S-1/A | — | IPO filings | Source |
| October 2, 2025 | IPO filing, Form S-1 | — | 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.