EBR Systems, Inc.: 5%+ holders

As of November 9, 2026, 4 holders' latest Schedule 13D or 13G filings report owning 5% or more of EBR Systems, Inc. The largest reported stake is Host-Plus Pty Ltd as trustee for the HOSTPLUS Pooled Superannuation Trust's, at 18.5%. 8 filings are on record since August 4, 2025 (Schedule 13G/A, August 25, 2026).

Regal Partners Funds Management Pty Limited also filed stake reports on 1 other company ↓

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Key facts

• Filing 2026-11-02 · Reporting person: H.E.S.T. Australia Ltd. · Sole voting: 1,634,387 · Shared voting: 3,907,925 · Sole dispositive: 1,634,387 · Shared dispositive: 3,907,925 · SCHEDULE 13G/A, 2026-11-02
• Filing 2026-08-25 · Reporting person: Host-Plus Pty Ltd as trustee for the HOSTPLUS Pooled Superannuation Trust · Sole voting: 14,854,675 · Shared voting: 0 · Sole dispositive: 14,854,675 · Shared dispositive: 901,450 · SCHEDULE 13G/A, 2026-08-25
• Filing 2026-08-14 · Reporting person: Split Rock Partners, LP · Sole voting: 0 · Shared voting: 2,172,239 · Sole dispositive: 0 · Shared dispositive: 2,172,239 · SCHEDULE 13G/A, 2026-08-14
• Filing 2026-08-13 · Reporting person: M.H. Carnegie & Co Pty Ltd · Sole voting: 0 · Shared voting: 4,625,490 · Sole dispositive: 0 · Shared dispositive: 4,625,490 · SCHEDULE 13G/A, 2026-08-13
• Filed 2026-08-12 · Holder: H.E.S.T. Australia Ltd. · Percent: 5.3% · SCHEDULE 13G/A

EBR Systems, Inc. has 8 Schedule 13D or 13G filings on record since 2025-08-04. 4 holders' latest filing reports 5% or more of common stock, par value $0.0001 per share. Each figure below is the holder's own, as filed, with the filing linked.

Holders

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More on EBR Systems, Inc. and the records around it.

Companies that share a holder

• Regal Partners Funds Management Pty Limited also filed stake reports on 1 other company: Radiopharm Theranostics Limited (Oct 2026)

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Voting and dispositive power, as filed

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The latest filing identifies EBR Systems, Inc. by CUSIP 000000000 and gives its principal executive office as 480 Oakmead Parkway, Sunnyvale, CA 94085 (SCHEDULE 13G/A, 2026-11-02).

What the percentages are based on

Row 11 of the Reporting Person's cover page to this Schedule 13G sets forth the percentage of shares of common stock of the Issuer beneficially owned by the Reporting Person and is incorporated by reference.Host-Plus Pty Ltd as trustee for the HOSTPLUS Pooled Superannuation Trust, SCHEDULE 13G/A, 2026-08-25

Row 11 of each Reporting Person's cover page to this Schedule 13G sets forth the percentages of the securities of the Issuer beneficially owned by such Reporting Person as of June 30, 2026 and is incorporated by reference.Mark H. Carnegie, SCHEDULE 13G/A, 2026-08-13

Timeline

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Questions about who owns EBR Systems, Inc.

Who owns EBR Systems, Inc.?

On this page, 4 holders' latest ownership filings report 5% or more of EBR Systems, Inc.: Host-Plus Pty Ltd as trustee for the HOSTPLUS Pooled Superannuation Trust (18.5%, Schedule 13G/A, filed 2026-08-25), Regal Partners Funds Management Pty Limited (11.62%, Schedule 13G/A, filed 2026-07-06), H.E.S.T. Australia Ltd. (6.5%, Schedule 13G/A, filed 2026-11-02) and Mark H. Carnegie (6.3%, Schedule 13G/A, filed 2026-08-13).

Who are the largest shareholders of EBR Systems, Inc.?

By the share each holder's latest filing reports, the largest holders of EBR Systems, Inc. on this page are Host-Plus Pty Ltd as trustee for the HOSTPLUS Pooled Superannuation Trust (18.5%), Regal Partners Funds Management Pty Limited (11.62%) and H.E.S.T. Australia Ltd. (6.5%).

When did Host-Plus Pty Ltd as trustee for the HOSTPLUS Pooled Superannuation Trust buy into EBR Systems, Inc.?

The filings give report dates, not purchase dates. The earliest filing from Host-Plus Pty Ltd as trustee for the HOSTPLUS Pooled Superannuation Trust on this page is the Schedule 13G/A, filed 2026-07-07, reporting 10.6%; its latest, Schedule 13G/A filed 2026-08-25, reports 18.5%. 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%); 8 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.

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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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