Cartesian Growth Corp III: 5%+ holders

As of November 10, 2026, 6 holders' latest Schedule 13D or 13G filings report owning 5% or more of Cartesian Growth Corp III. The largest reported stake is Huang Siyu's, at 19.1%. 28 filings are on record since August 5, 2025 (Schedule 13D, June 12, 2026).

Picton Mahoney Asset Management also filed stake reports on 20 other companies ↓

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Key facts

• Filing 2026-08-14 · Reporting person: Alyeska Investment Group, L.P. · Sole voting: 0 · Shared voting: 7,366,196 · Sole dispositive: 0 · Shared dispositive: 7,366,196 · SCHEDULE 13G, 2026-08-14
• Filing 2026-08-14 · Reporting person: Millennium Management LLC · Sole voting: 0 · Shared voting: 456,706 · Sole dispositive: 0 · Shared dispositive: 456,706 · SCHEDULE 13G/A, 2026-08-14
• Filing 2026-08-14 · Reporting person: Highbridge Capital Management, LLC · Sole voting: 0 · Shared voting: 0 · Sole dispositive: 0 · Shared dispositive: 0 · SCHEDULE 13G/A, 2026-08-14
• Filed 2026-08-14 · Holder: Tenor Capital Management Company, L.P. · Percent: 0% · SCHEDULE 13G/A
• Filed 2026-08-14 · Holder: Fort Baker Capital Management LP · Percent: 0% · SCHEDULE 13G/A

Cartesian Growth Corp III has 28 Schedule 13D or 13G filings on record since 2025-08-05. 6 holders' latest filing reports 5% or more of class a common stock. Each figure below is the holder's own, as filed, with the filing linked.

Holders

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More on Cartesian Growth Corp III and the records around it.

Cartesian Growth Corp III elsewhere on the record

• Who owns it

Companies that share a holder

• Picton Mahoney Asset Management also filed stake reports on 20 other companies: Blue Water Acquisition Corp. III (Oct 2026), Launch One Acquisition Corp. (Oct 2026), Pono Capital Four, Inc. (Oct 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), Churchill Capital Corp IX/Cayman (Aug 2026)
• Tenor Capital Management Company, L.P. also filed stake reports on 41 other companies: Archimedes Tech SPAC Partners II Co. (Aug 2026), Armada Acquisition Corp. II (Aug 2026), Blue Acquisition Corp. (Aug 2026)

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What the Full Report on Cartesian Growth Corp III covers

1. The Short Answer

2. Which Company This Is

3. What They Do, And How The Money Works

4. Who Runs It, And How To Reach Them

5. The Money: Funding, Valuation, Runway

6. Who Pays Them, And Who They Are Up Against

7. Warning Bells

8. Sources

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Voting and dispositive power, as filed

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The latest filing identifies Cartesian Growth Corp III by CUSIP 30347G103 and gives its principal executive office as 805 Middlesex Turnpike, Billerica, MA 01821 (SCHEDULE 13G, 2026-08-14).

What the percentages are based on

9.2%. The foregoing percentage is calculated based on 91,510,501 shares of the Issuer's Series A Common Stock outstanding as of June 5, 2026, as reported in the Issuer's Current Report on Form 8-K filed on June 10, 2026.CGC III Sponsor LLC, SCHEDULE 13G/A, 2026-08-10

Source of funds (Item 3)

Business Combination On June 5, 2026, pursuant to the Business Combination Agreement (as amended, the "Business Combination Agreement"), dated December 17, 2025, by and among the Issuer (formerly known as Cartesian Growth Corporation III), Fenway MS, Inc., a Delaware corporation and wholly-owned subsidiary of the Issuer ("Merger Sub"), and Factorial Inc., a Delaware corporation ("Legacy Factorial"), Merger Sub merged with and into Legacy Factorial, with Legacy Factorial surviving the merger as a wholly-owned subsidiary of the Issuer (the "Business Combination").Huang Siyu, SCHEDULE 13D, 2026-06-12

The shares of Class A common stock of the Issuer (the "Class A Common Stock") reported as beneficially owned by the Reporting Persons were acquired by the Funds on June 5, 2026 (the "Closing") in connection with the consummation of the Issuer's business combination with Cartesian Growth Corporation III, a Cayman Islands exempted company (the "Business Combination"), as a result of which the Company is named Factorial Energy Inc.WAVE Factorial Energy I, LLC, SCHEDULE 13D, 2026-06-26

Purpose of Transaction (Item 4)

Huang Siyu

The information set forth in Items 3 and 6 of this Schedule 13D is hereby incorporated by reference into this Item 4. The Reporting Persons each intend to review each of their respective investments in the Issuer on a continuing basis. Any actions the Reporting Persons might each undertake may be made at any time and from time to time without prior notice and will be dependent upon each of their respective review of numerous factors, including, but not limited to: an ongoing evaluation of the Issuer's business, financial condition, operations and prospects; price levels of the Issuer's securities; general market, industry and economic conditions; the relative attractiveness of alternative business and investment opportunities; and other future developments. In connection with the vesting, settlement or exercise of equity awards of the Issuer, the Reporting Persons may each have shares of Series A Common Stock withheld for taxes or sold in open-market transactions in connection with the payment of applicable taxes or otherwise. The Reporting Persons, subject to certain provisions of the law, may each respectively acquire additional securities of the Issuer, or retain or sell all or a portion of the securities then held, in the open market or in privately negotiated transactions. In addition, each of Dr. Huang, including in her positions as Chief Executive Officer and a member of the Board, and Dr. Yu, including in his positions as Chief Technology Officer and a member of …The first part of Item 4 of the SCHEDULE 13D filed 2026-06-12; the filing has the rest

Mercedes-Benz Corporate Investments LLC

The disclosure in Item 3 of this Schedule 13D is incorporated by reference into this Item 4. MBCI holds its securities of the Issuer for investment purposes. In connection with the completion of the Business Combination, Uwe Keller, Director of Battery Development at Mercedes-Benz Group AG, who was previously a director of Factorial, was elected to the board of the Issuer. MBCI expects to review from time to time its investment in the Issuer and may, depending on the market and other conditions and subject to applicable law: (i) acquire beneficial ownership of additional securities of the Issuer in the open market, in privately negotiated transactions or otherwise; (ii) dispose of all or part of its holdings of securities of the Issuer; or (iii) take other actions which could involve one or more of the types of transactions or have one or more of the results described in Item 4 of Schedule 13D. Except as set forth herein, MBCI does not have any plans or proposals which relate to, or could result in, any of the matters referred to in paragraphs (a) through (j), inclusive, of the instructions to Item 4 of Schedule 13D. MBCI may, at any time and from time to time, review or reconsider its position and/or change its purpose and/or formulate plans or proposals with respect thereto.Item 4 of the SCHEDULE 13D filed 2026-06-12

Stellantis N.V.

The Reporting Persons acquired the securities disclosed herein based on the belief that the securities, when acquired, represented an attractive investment opportunity. In connection with the completion of the Business Combination, Jon Nelson, Chief Executive of Stellantis Financial Services, was elected to the board of directors of the Issuer (the "Board"). Except as otherwise disclosed in this Item 4, the Reporting Persons do not have any present plan or proposal which would relate to or result in any of the matters set forth in subparagraphs (a)-(j) of Item 4 of Schedule 13D. The Reporting Persons may from time to time engage in discussions with management and the Board and other shareholders and potential shareholders of the Issuer and other parties concerning, among other things, the business, operations and future plans of the Issuer. Depending on various factors including without limitation, the Issuer's financial position and business strategy and the execution of that strategy by management, the price levels of the securities of the Issuer, conditions in the securities markets and general economic and industry conditions, the Reporting Persons may in the future take such actions with respect to their respective investments in the Issuer as they deem appropriate including, without limitation, purchasing additional securities of the Issuer, selling some or all of its securities of the Issuer, or changing its intention with respect to any and all matters referred to …The first part of Item 4 of the SCHEDULE 13D filed 2026-06-17; the filing has the rest

WAVE Factorial Energy I, LLC

The Reporting Persons acquired the Class A Common Stock reported herein as a result of the Business Combination and hold such securities for investment purposes. The shares held by the Funds are being registered for resale by the Issuer on a Registration Statement on Form S-1. Other than as described in this Item 4, none of the Reporting Persons presently has any plans or proposals that relate to or would result in any of the transactions or matters specified in clauses (a) through (j) of Item 4 of Schedule 13D, although the Reporting Persons may review or reconsider their position and formulate plans or proposals with respect thereto.Item 4 of the SCHEDULE 13D filed 2026-06-26

Timeline

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Questions about who owns Cartesian Growth Corp III

Who owns Cartesian Growth Corp III?

On this page, 6 holders' latest ownership filings report 5% or more of Cartesian Growth Corp III: Huang Siyu (19.1%, Schedule 13D, filed 2026-06-12), WAVE Factorial Energy I, LLC (10.7%, Schedule 13D, filed 2026-06-26), Stellantis N.V. (9.5%, Schedule 13D, filed 2026-06-17), CGC III Sponsor LLC (9.2%, Schedule 13G/A, filed 2026-08-10) and Mercedes-Benz Corporate Investments LLC (8.1%, Schedule 13D, filed 2026-06-12); 1 more is listed above.

Who are the largest shareholders of Cartesian Growth Corp III?

By the share each holder's latest filing reports, the largest holders of Cartesian Growth Corp III on this page are Huang Siyu (19.1%), WAVE Factorial Energy I, LLC (10.7%) and Stellantis N.V. (9.5%).

When did Huang Siyu buy into Cartesian Growth Corp III?

The filings give report dates, not purchase dates. The earliest filing from Huang Siyu on this page is the Schedule 13D, filed 2026-06-12, reporting 19.1%.

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%); 28 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 Cartesian Growth Corp III

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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.

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