# EDGAR Filing Document

**Accession Number:** 0001347123
**File Stem:** 0000950170-25-101596
**Filing Date:** 2025-8
**Character Count:** 8993
**Document Hash:** dcc8c24ecc1b1d802cb1aca22214f28f
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000950170-25-101596.hdr.sgml**: 20250804

**ACCESSION NUMBER**: 0000950170-25-101596

**CONFORMED SUBMISSION TYPE**: SCHEDULE 13G/A

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20250804

**DATE AS OF CHANGE**: 20250804

**SUBJECT COMPANY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** EBR Systems, Inc.
- **CENTRAL INDEX KEY:** 0001347123
- **STANDARD INDUSTRIAL CLASSIFICATION:** SURGICAL & MEDICAL INSTRUMENTS & APPARATUS [3841]
- **ORGANIZATION NAME:** 08 Industrial Applications and Services
- **EIN:** 571164669
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13G/A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 005-94707
- **FILM NUMBER:** 251177882

**BUSINESS ADDRESS:**
- **STREET 1:** 480 OAKMEAD PARKWAY
- **CITY:** SUNNYVALE
- **STATE:** CA
- **ZIP:** 94085
- **BUSINESS PHONE:** 408 720-1906

**MAIL ADDRESS:**
- **STREET 1:** 480 OAKMEAD PARKWAY
- **CITY:** SUNNYVALE
- **STATE:** CA
- **ZIP:** 94085

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** EBR Systems Inc
- **DATE OF NAME CHANGE:** 20051216
**FILED BY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** H.E.S.T. Australia Ltd. as trustee for HESTA
- **CENTRAL INDEX KEY:** 0002043018

**ORGANIZATION NAME:**
- **EIN:** 980488143
- **STATE OF INCORPORATION:** C3
- **FISCAL YEAR END:** 0630

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13G/A

**BUSINESS ADDRESS:**
- **STREET 1:** LEVEL 20
- **STREET 2:** 2 LONSDALE STREET
- **CITY:** MELBOURNE
- **STATE:** C3
- **ZIP:** 3000
- **BUSINESS PHONE:** 61 03 8660 1600

**MAIL ADDRESS:**
- **STREET 1:** LEVEL 20
- **STREET 2:** 2 LONSDALE STREET
- **CITY:** MELBOURNE
- **STATE:** C3
- **ZIP:** 3000

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## SCHEDULE 13G

### Under the Securities Exchange Act of 1934

**(Amendment No. 1)**

**Issuer:** EBR SYSTEMS, INC.

**Title of Class of Securities:** Common Stock, par value $0.0001 per share

**CUSIP Number:** 000000000

**Date of Event Which Requires Filing of this Statement:** 06/30/2025

**Check the appropriate box to designate the rule pursuant to which this Schedule is filed:**

- [ ] Rule 13d-1(b)

- [ ] Rule 13d-1(c)

- [x] Rule 13d-1(d)

---

| 1. | Names of Reporting Persons<br>H.E.S.T. Australia Ltd. | Names of Reporting Persons<br>H.E.S.T. Australia Ltd. |
|:---|:---|:---|:---|
| 2. | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [ ] | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [ ] |
| 3. | SEC Use Only | SEC Use Only |
| 4. | Citizenship or Place of Organization<br>C3 | Citizenship or Place of Organization<br>C3 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 5. | Sole Voting Power<br>17633860 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 6. | Shared Voting Power<br>18947624 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 7. | Sole Dispositive Power<br>17633860 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 8. | Shared Dispositive Power<br>18947624 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>36581484 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>36581484 |
| 10. | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] |
| 11. | Percent of Class Represented by Amount in Row (9)<br>8.5% | Percent of Class Represented by Amount in Row (9)<br>8.5% |
| 12. | Type of Reporting Person (See Instructions)<br>OO | Type of Reporting Person (See Instructions)<br>OO |

**Comment for Type of Reporting Person:** Rows 5 and 7 include 17,633,860 shares of common stock, par value $0.0001 per share ("common stock"), underlying the same amount of CHESS Depositary Interests ("CDIs") of EBR Systems, Inc. (the "Issuer") held by H.E.S.T. Australia Ltd. (the "Reporting Person"), as trustee for HESTA. Each CDI represents the right to receive one share of common stock. The CDIs are held by CHESS Depositary Nominees Pty Limited, a subsidiary of ASX Limited.

Rows 6 and 8 include 15,875,392 CDIs and 3,072,232 shares of common stock issuable upon exercise of certain warrants held by MRCF3 Service (H) Pty Ltd ("MRCF3 Service (H)") on trust for MRCF3 (H) Trust. MRCF3 Service (H) is the trustee of MRCF3 (H) Trust. The Reporting Person is the sole unitholder in MRCF3 (H) Trust. Pursuant to a Part B Management Agreement, dated April 22, 2015, among MRCF3 Service (H), BCP3 Pty Ltd and the Reporting Person, the Reporting Person may be deemed to share voting and investment power with respect to the CDIs and shares of common stock issuable upon exercise of certain warrants held by MRCF3 (H) Trust. Based on information provided by the Issuer in Amendment No. 3 to the Issuer's Form 10, filed with the U.S. Securities and Exchange Commission ("SEC") on November 21, 2024, Christopher Nave and Henry Thompson are the members of MRCF3 Service (H) and share voting and investment power over the CDIs held by the Reporting Person.

Row 11 is based on the sum of (i) 373,076,861 shares of the Issuer's common stock outstanding (including shares underlying all issued and outstanding CDIs) as of May 12, 2025, as disclosed in the Issuer's Quarterly Report on Form 10-Q for the quarter ended March 31, 2025, filed with the SEC on May 13, 2025 and (ii) 55,900,000 CDIs issued in an underwritten placement to institutional investors on May 26, 2025, as reported in the Issuer's Current Report on Form 8-K filed with the SEC on May 29, 2025.

---

**Item 1(a). Name of Issuer:**
EBR SYSTEMS, INC.

**Item 1(b). Address of Issuer's Principal Executive Offices:**
480 Oakmead Parkway, Sunnyvale, CA 94085

**Item 2(a). Name of Person Filing:**
H.E.S.T. Australia Ltd.

**Item 2(b). Address of Principal Business Office:**
Level 20, 2 Lonsdale Street, Melbourne, Victoria, 3000

**Item 2(c). Citizenship:**
Australia

**Item 2(d). Title of Class of Securities:**
Common Stock, par value $0.0001 per share

**Item 2(e). CUSIP Number:**
000000000

**Item 3. If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:**

(a) [ ] Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o).

(b) [ ] Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c).

(c) [ ] Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c).

(d) [ ] Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8).

(e) [ ] An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);

(f) [ ] An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);

(g) [ ] A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);

(h) [ ] A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);

(i) [ ] A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);

(j) [ ] A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), if filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:

(k) [ ] Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).

**Item 4. Ownership:**

**(a) Amount beneficially owned:**

36,581,484

**(b) Percent of class:**

8.5

**(c) Number of shares as to which the person has:**

**(i) Sole power to vote or to direct the vote:**

17,633,860

**(ii) Shared power to vote or to direct the vote:**

18,947,624

**(iii) Sole power to dispose or to direct the disposition of:**

17,633,860

**(iv) Shared power to dispose or to direct the disposition of:**

18,947,624

**Item 5. Ownership of Five Percent or Less of a Class.**

[ ] If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than five percent of the class of securities, check the following.

**Item 6. Ownership of More than 5 Percent on Behalf of Another Person.**

Not Applicable

**Item 7. Identification and Classification of the Subsidiary**

Not Applicable

**Item 8. Identification and Classification of Members of the Group**

Not Applicable

**Item 9. Notice of Dissolution of Group**

Not Applicable

**Item 10. Certification:**

—

### SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**H.E.S.T. Australia Ltd.**

**Date:** 08/01/2025

**By:** /s/ Bruce Cooper

**Name & Title:** Attorney-in-Fact