As of November 6, 2026, 4 holders' latest Schedule 13D or 13G filings report owning 5% or more of Safeguard Acquisition Corp. The largest reported stake is Safeguard Acquisition Management LLC's, at 18.92%. 6 filings are on record since January 30, 2026 (Schedule 13D, January 30, 2026).
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Key facts
- · Reporting person: Linden Capital L.P. · Sole voting: 0 · Shared voting: 1,456,154 · Sole dispositive: 0 · Shared dispositive: 1,456,154 · SCHEDULE 13G/A, 2026-08-14
- · Reporting person: Harraden Circle Investments, LLC · Sole voting: 0 · Shared voting: 1,468,060 · Sole dispositive: 0 · Shared dispositive: 1,468,060 · SCHEDULE 13G/A, 2026-08-14
- · Holder: Harraden Circle Investments, LLC · Percent: 6.19% · SCHEDULE 13G
- · Holder: Linden Advisors LP · Percent: 5.3% · SCHEDULE 13G
- · Holder: Adage Capital Management, L.P. · Percent: 7.59% · SCHEDULE 13G
Safeguard Acquisition Corp. has 6 Schedule 13D or 13G filings on record since 2026-01-30. 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 |
|---|---|---|---|---|
| Safeguard Acquisition Management LLC | 18.92% | 7,981,667 | SCHEDULE 13D, 2026-01-30 | 2025-12-03 |
| Adage Capital Management, L.P. | 7.59% | 1,800,000 | SCHEDULE 13G, 2026-02-12 | 2025-12-31 |
| Linden Advisors LP | 6.4% | 1,510,000 | SCHEDULE 13G/A, 2026-08-14 | 2026-06-30 |
| Harraden Circle Investments, LLC | 6.19% | 1,468,060 | SCHEDULE 13G/A, 2026-08-14 | 2026-06-30 |
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More on Safeguard Acquisition Corp. and the records around it.
Companies that share a holder
- Linden Capital L.P. also filed stake reports on 73 other companies: Southport Acquisition Corp. II (Oct 2026), NewHold Investment Corp IV (Sep 2026), Haymaker Acquisition Corp V (Sep 2026)
- Harraden Circle Investments, LLC also filed stake reports on 95 other companies: Calisa Acquisition Corp (Nov 2026), Texas Ventures Acquisition III Corp (Nov 2026), Columbus Acquisition Corp (Oct 2026)
- Adage Capital Management, L.P. also filed stake reports on 136 other companies: ACP Holdings Acquisition Corp. (Aug 2026), AmperCap Acquisition Company (Aug 2026), Aura Biosciences, Inc. (Aug 2026)
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What the Full Report on Safeguard Acquisition Corp. covers
The Short Answer
Which Company This Is
What They Do, And How The Money Works
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Warning Bells
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Voting and dispositive power, as filed
| Reporting person | Sole voting | Shared voting | Sole dispositive | Shared dispositive | Filing |
|---|---|---|---|---|---|
| Linden Capital L.P. | 0 | 1,456,154 | 0 | 1,456,154 | SCHEDULE 13G/A, 2026-08-14 |
| Linden GP LLC | 0 | 1,456,154 | 0 | 1,456,154 | SCHEDULE 13G/A, 2026-08-14 |
| Linden Advisors LP | 0 | 1,510,000 | 0 | 1,510,000 | SCHEDULE 13G/A, 2026-08-14 |
| Siu Min Wong | 0 | 1,510,000 | 0 | 1,510,000 | SCHEDULE 13G/A, 2026-08-14 |
| Harraden Circle Investments, LLC | 0 | 1,468,060 | 0 | 1,468,060 | SCHEDULE 13G/A, 2026-08-14 |
| Frederick V. Fortmiller, Jr. | 0 | 1,468,060 | 0 | 1,468,060 | SCHEDULE 13G/A, 2026-08-14 |
The latest filing identifies Safeguard Acquisition Corp. by CUSIP G77676107 and gives its principal executive office as 7251 West Lake Mead Boulevard, Suite 300, Las Vegas, NV 89128 (SCHEDULE 13G/A, 2026-08-14).
Purpose of Transaction (Item 4)
Safeguard Acquisition Management LLC
Founder Shares On July 18, 2025, the Sponsor paid $25,000 to cover certain of Issuer's offering and formation costs in exchange for 7,666,667 Class B ordinary shares, par value $0.0001 per share of the Issuer (the "Class B ordinary shares" or the "Founder Shares"). The Founder Shares will automatically convert into Class A ordinary shares immediately prior to, concurrently with or immediately following the consummation of the Issuer's initial business combination (the "Business Combination") or earlier at the option of the holder on a one-for-one basis, subject to the adjustments and anti-dilution rights described under the heading "Description of Securities--Founder Shares " in the Issuer's prospectus (File No. 333-291300). Private Placement Units Simultaneously with the closing of the IPO, on December 3, 2025, pursuant to a Private Placement Units Purchase Agreement (the "Private Placement Units Purchase Agreement"), the Issuer completed the private sale of 470,000 units (the "Private Placement Units") at a purchase price of $10.00 per unit, to the Sponsor, generating gross proceeds to the Issuer of $4,700,000. Each Private Placement Unit consists of one Class A ordinary share and one-half of one warrant. The Private Placement Units are identical to the units sold in the IPO, except that the Private Placement Units (including the securities comprising such units) may not, subject to certain limited exceptions, be transferred, assigned or sold until 30 days after the …The first part of Item 4 of the SCHEDULE 13D filed 2026-01-30; the filing has the rest
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2026-01-30 | Safeguard Acquisition Management LLC | 18.92% | SCHEDULE 13D |
| 2026-02-12 | Adage Capital Management, L.P. | 7.59% | SCHEDULE 13G |
| 2026-04-24 | Linden Advisors LP | 5.3% | SCHEDULE 13G |
| 2026-04-29 | Harraden Circle Investments, LLC | 6.19% | SCHEDULE 13G |
| 2026-08-14 | Harraden Circle Investments, LLC | 6.19% | SCHEDULE 13G/A |
| 2026-08-14 | Linden Advisors LP | 6.4% | SCHEDULE 13G/A |
Questions about who owns Safeguard Acquisition Corp.
Who owns Safeguard Acquisition Corp.?
On this page, 4 holders' latest ownership filings report 5% or more of Safeguard Acquisition Corp.: Safeguard Acquisition Management LLC (18.92%, Schedule 13D, filed 2026-01-30), Adage Capital Management, L.P. (7.59%, Schedule 13G, filed 2026-02-12), Linden Advisors LP (6.4%, Schedule 13G/A, filed 2026-08-14) and Harraden Circle Investments, LLC (6.19%, Schedule 13G/A, filed 2026-08-14).
Who are the largest shareholders of Safeguard Acquisition Corp.?
By the share each holder's latest filing reports, the largest holders of Safeguard Acquisition Corp. on this page are Safeguard Acquisition Management LLC (18.92%), Adage Capital Management, L.P. (7.59%) and Linden Advisors LP (6.4%).
When did Safeguard Acquisition Management LLC buy into Safeguard Acquisition Corp.?
The filings give report dates, not purchase dates. The earliest filing from Safeguard Acquisition Management LLC on this page is the Schedule 13D, filed 2026-01-30, reporting 18.92%.
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%); 6 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 Safeguard Acquisition Corp.
| Date | Record | Figure | Our page | Source |
|---|---|---|---|---|
| December 4, 2025 | IPO filing, Form 424B4 | — | IPO filings | Source |
| November 6, 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.