As of November 6, 2026, 2 holders' latest Schedule 13D or 13G filings report owning 5% or more of West Enclave Merger Corp. The largest reported stake is West Enclave Sponsor, LLC's, at 16.2%. 2 filings are on record since May 12, 2026 (Schedule 13D, May 12, 2026).
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West Enclave Merger Corp. has 2 Schedule 13D or 13G filings on record since 2026-05-12. 2 holders' latest filing reports 5% or more of 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 |
|---|---|---|---|---|
| West Enclave Sponsor, LLC | 16.2% | 2,603,333 | SCHEDULE 13D, 2026-05-12 | 2026-05-01 |
| Adage Capital Management, L.P. | 5.61% | 900,000 | SCHEDULE 13G, 2026-08-12 | 2026-06-30 |
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More on West Enclave Merger Corp. and the records around it.
Companies that share a holder
- 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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Voting and dispositive power, as filed
| Reporting person | Sole voting | Shared voting | Sole dispositive | Shared dispositive | Filing |
|---|---|---|---|---|---|
| Adage Capital Management, L.P. | 0 | 900,000 | 0 | 900,000 | SCHEDULE 13G, 2026-08-12 |
| Robert Atchinson | 0 | 900,000 | 0 | 900,000 | SCHEDULE 13G, 2026-08-12 |
| Phillip Gross | 0 | 900,000 | 0 | 900,000 | SCHEDULE 13G, 2026-08-12 |
The latest filing identifies West Enclave Merger Corp. by CUSIP G9600E107 and gives its principal executive office as C. Calderon De La Barca 22, C/O WEST ENCLAVE MERGER CORP., Ciudad De Mexico (SCHEDULE 13G, 2026-08-12).
Purpose of Transaction (Item 4)
West Enclave Sponsor, LLC
On December 17, 2025, the Issuer issued an aggregate of 3,833,333 ordinary shares to Sponsor for an aggregate purchase price of $25,000. Third party designees of the sponsor purchased an aggregate of 147,500 of the private units Sponsor purchased, Jean-Michel Enriquez Dahlhaus, one of the Issuer's independent directors, purchased 5,000 of the private units Sponsor has purchased, and an entity affiliated with Hector Madero Rivero, another of the Issuer's independent directors, has purchased 20,000 of the private units Sponsor purchased, in each case at $10.00 per private unit. Sponsor transferred an aggregate of 1,380,000 ordinary shares of the Issuer (the "founder shares") on the closing of the initial public offering for an aggregate consideration of approximately $9,000, or approximately $0.0065 per founder share (including 40,000 founder shares to Mr. Enriquez and 160,000 founder shares to the entity affiliated with Mr. Madero). On May 1, 2026, the Issuer consummated its initial public offering ("IPO") and in connection with the consummation, Sponsor purchased an aggregate of 300,000 units for an aggregate purchase price of $3,000,000. On May 4, 2026, the underwriters of the Issuer, notified the Company of their exercise of the over-allotment option in full and purchased 1,500,000 additional units at $10.00 per unit upon the closing of the over-allotment option, generating gross proceeds of $15,000,000. The over-allotment option closed on May 6, 2026 simultaneously with a …The first part of Item 4 of the SCHEDULE 13D filed 2026-05-12; the filing has the rest
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2026-05-12 | West Enclave Sponsor, LLC | 16.2% | SCHEDULE 13D |
| 2026-08-12 | Adage Capital Management, L.P. | 5.61% | SCHEDULE 13G |
Questions about who owns West Enclave Merger Corp.
Who owns West Enclave Merger Corp.?
On this page, 2 holders' latest ownership filings report 5% or more of West Enclave Merger Corp.: West Enclave Sponsor, LLC (16.2%, Schedule 13D, filed 2026-05-12) and Adage Capital Management, L.P. (5.61%, Schedule 13G, filed 2026-08-12).
Who are the largest shareholders of West Enclave Merger Corp.?
By the share each holder's latest filing reports, the largest holders of West Enclave Merger Corp. on this page are West Enclave Sponsor, LLC (16.2%) and Adage Capital Management, L.P. (5.61%).
When did West Enclave Sponsor, LLC buy into West Enclave Merger Corp.?
The filings give report dates, not purchase dates. The earliest filing from West Enclave Sponsor, LLC on this page is the Schedule 13D, filed 2026-05-12, reporting 16.2%.
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%); 2 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 West Enclave Merger Corp.
| Date | Record | Figure | Our page | Source |
|---|---|---|---|---|
| May 4, 2026 | Leadership change filing (Form 8-K, Item 5.02) | — | Leadership changes | Source |
| April 30, 2026 | IPO filing, Form 424B4 | $10 a share | IPO filings | Source |
| April 20, 2026 | IPO filing, Form S-1/A | — | IPO filings | Source |
| March 20, 2026 | IPO filing, Form S-1/A | — | IPO filings | Source |
| March 9, 2026 | 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.