Infleqtion, Inc.: 5%+ holders

As of November 10, 2026, 3 holders' latest Schedule 13D or 13G filings report owning 5% or more of Infleqtion, Inc. The largest reported stake is Michael Klein's, at 20.4%. 22 filings are on record since August 12, 2025 (Schedule 13D/A, September 11, 2025).

MCV Management Company, LLC also filed stake reports on 5 other companies ↓

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Key facts

• Filing 2026-06-11 · Reporting person: S&G Foundation · Sole voting: 11,573,878 · Shared voting: 0 · Sole dispositive: 11,573,878 · Shared dispositive: 0 · SCHEDULE 13G, 2026-06-11
• Filing 2026-06-09 · Reporting person: Global Frontier Investments LLC · Sole voting: 0 · Shared voting: 2,364,753 · Sole dispositive: 0 · Shared dispositive: 2,364,753 · SCHEDULE 13G/A, 2026-06-09
• Filed 2026-05-26 · Holder: Maverick Capital, Ltd. · Percent: 3.6% · SCHEDULE 13D/A
• Filed 2026-04-28 · Holder: Tyler Brous · Percent: 0.7% · SCHEDULE 13G/A
• Filed 2026-03-10 · Holder: BOKA Group Holdings I LP · Percent: 5.75% · SCHEDULE 13G

Infleqtion, Inc. has 22 Schedule 13D or 13G filings on record since 2025-08-12. 3 holders' latest filing reports 5% or more of common stock, $0.0001 par value per share. Each figure below is the holder's own, as filed, with the filing linked.

Holders

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More on Infleqtion, Inc. and the records around it.

Infleqtion, Inc. elsewhere on the record

• Leadership changes May 2026
• Form D filing Feb 2026
• Who owns it

Companies that share a holder

• MCV Management Company, LLC also filed stake reports on 5 other companies: Invivyd, Inc. (Feb 2026), Peabody Energy Corporation (Feb 2026), Curis, Inc. (Nov 2025)
• 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)
• Merus Global Investments, LLC also filed stake reports on 10 other companies: General Fusion Group Ltd. (Aug 2026), D. Boral ARC Acquisition I Corp. (Jun 2026), Bleichroeder Acquisition Corp. II (Jun 2026)

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What the Full Report on Infleqtion, Inc. 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 Infleqtion, Inc. by CUSIP 45676K103 and gives its principal executive office as 1315 West Century Drive, Suite 150, Louisville, CO 80027 (SCHEDULE 13G, 2026-06-11).

What the percentages are based on

5.3%. The percentage of beneficial ownership reported herein, and on the Reporting Person's cover page to this Schedule 13G, are based on a total of 218,196,891 shares of Common Stock issued and outstanding as of May 12, 2026, as reported in the most recent quarterly report of the Issuer on Form 10-Q for its fiscal quarter ended March 31, 2026.S&G Foundation, SCHEDULE 13G, 2026-06-11

Purpose of Transaction (Item 4)

Michael Klein

Merger Agreement As disclosed in the Current Report on Form 8-K filed by the Churchill Capital Corp X (the "Issuer") on September 8, 2025, the Issuer entered into an Agreement and Plan of Merger and Reorganization (the "Merger Agreement") by and among the Issuer, AH Merger Sub I, Inc., a Delaware corporation and direct, wholly-owned subsidiary of the Issuer ("Merger Sub I"), AH Merger Sub II, LLC, a Delaware limited liability company and a direct, wholly-owned subsidiary of the Issuer ("Merger Sub II") and ColdQuanta, Inc., a Delaware corporation (the "Company"). Pursuant to the Merger Agreement, and on the terms and subject to the satisfaction or waiver of the conditions set forth therein, the parties thereto intend to effect a business combination transaction by which Merger Sub I will merge with and into the Company, with the Company continuing as the surviving corporation and a wholly-owned subsidiary of Churchill ("First Merger"), and immediately following the First Merger, the surviving corporation of the First Merger will merge with and into Merger Sub II, with Merger Sub II continuing as the surviving entity (the "Second Merger" and, together with the First Merger, the "Mergers"). The transactions contemplated by the Merger Agreement, including the PIPE Investment (as defined below), are referred to as the "Transactions." The proposed Mergers are expected to be consummated following the receipt of the required approvals by the shareholders of the Issuer and the …The first part of Item 4 of the SCHEDULE 13D/A filed 2025-09-11; the filing has the rest

Churchill Sponsor X LLC

The following amends and restates the information set forth in Item 4 of Amendment No. 1 by adding the following at the end thereof: Pursuant to the Merger Agreement, the Domestication and the Mergers were completed on February 12 and February 13, 2026, respectively. Prior to the consummation of the Domestication and the Mergers, the Reporting Person held (i) 10,350,000 Class B ordinary shares of Churchill Capital Corp X ("Churchill") and (ii) 300,000 private placement units of Churchill (each unit consisting of one Class A ordinary share, par value $0.0001 per share, of Churchill and one quarter of one warrant, with the warrant only becoming exercisable 30 days after the completion of the Mergers). Upon the Domestication and pursuant to the Merger Agreement, the securities of Churchill held by the Reporting Person automatically converted into (i) 10,650,000 shares of common stock, par value $0.0001 per share, of the Issuer ("Common Stock") and (ii) 75,000 private placement warrants of the Issuer, which will become exercisable 30 days after the completion of the Mergers. Effective upon the completion of the Mergers, the A&R Registration Rights Agreement and Advisory Agreement became effective in accordance with their terms, as previously reported.Item 4 of the SCHEDULE 13D/A filed 2026-02-17

Timeline

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Questions about who owns Infleqtion, Inc.

Who owns Infleqtion, Inc.?

On this page, 3 holders' latest ownership filings report 5% or more of Infleqtion, Inc.: Michael Klein (20.4%, Schedule 13D/A, filed 2025-09-11), BOKA Group Holdings I LP (5.75%, Schedule 13G, filed 2026-03-10) and S&G Foundation (5.3%, Schedule 13G, filed 2026-06-11).

Who are the largest shareholders of Infleqtion, Inc.?

By the share each holder's latest filing reports, the largest holders of Infleqtion, Inc. on this page are Michael Klein (20.4%), BOKA Group Holdings I LP (5.75%) and S&G Foundation (5.3%).

When did Michael Klein buy into Infleqtion, Inc.?

The filings give report dates, not purchase dates. The earliest filing from Michael Klein on this page is the Schedule 13D/A, filed 2025-09-11, reporting 20.4%. 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%); 22 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 Infleqtion, Inc.

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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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