Sec Form 3 Filing - Host-Plus Pty Ltd as trustee for the HOSTPLUS Pooled Superannuation Trust @ EBR Systems, Inc. - 2024-09-30

FORM 3 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL OMB Number: 3235-0287 Expires: November 30, 2011 Estimated average burden hours per response... 0.5

1. Name and Address of Reporting Person Host-Plus Pty Ltd as trustee for the HOSTPLUS Pooled Superannuation Trust 2. Issuer Name and Ticker or Trading Symbol EBR Systems, Inc. [ NONE] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director X __ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) LEVEL 9, 114 WILLIAM STREET 3. Date of Earliest Transaction (MM/DD/YY) 09/30/2024 (Street) MELBOURNE, C330000 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 26,551,391 ( 1 ) I By MRCF3 Service (HP) Pty Ltd atf MRCF 3 (HP) Trust ( 2 ) Common Stock 8,376,377 ( 1 ) I By MRCF3 Service (SW) Pty Ltd atf MRCF 3 (SW) Trust ( 3 ) Common Stock 7,868,138 ( 1 ) I By BB6 SERVICE (HP) COINVESTMENT TRUSCO PTY LTD atf BCP (HP) Co- Investment Trust ( 4 )

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares Warrant (right to buy) $ 0.5891 08/26/2019 08/26/2029 Common Stock 472,350 I By MRCF3 Service (HP) Pty Ltd atf MRCF 3 (HP) Trust ( 2 ) Warrant (right to buy) $ 0.5891 03/12/2020 03/12/2030 Common Stock 472,350 I By MRCF3 Service (HP) Pty Ltd atf MRCF 3 (HP) Trust ( 2 ) Warrant (right to buy) $ 0.5891 02/12/2021 02/12/2031 Common Stock 188,940 I By MRCF3 Service (HP) Pty Ltd atf MRCF 3 (HP) Trust ( 2 ) Warrant (right to buy) $ 0.5891 06/25/2021 06/25/2031 Common Stock 479,099 I By MRCF3 Service (HP) Pty Ltd atf MRCF 3 (HP) Trust ( 2 ) Warrant (right to buy) $ 0.5891 10/04/2021 10/04/2031 Common Stock 482,141 I By MRCF3 Service (HP) Pty Ltd atf MRCF 3 (HP) Trust ( 2 ) Warrant (right to buy) $ 0.5891 08/26/2019 08/26/2029 Common Stock 295,287 I By MRCF3 Service (SW) Pty Ltd atf MRCF 3 (SW) Trust ( 3 ) Warrant (right to buy) $ 0.5891 03/12/2020 03/12/2030 Common Stock 295,287 I By MRCF3 Service (SW) Pty Ltd atf MRCF 3 (SW) Trust ( 3 ) Warrant (right to buy) $ 0.5891 02/12/2021 02/12/2031 Common Stock 118,115 I By MRCF3 Service (SW) Pty Ltd atf MRCF 3 (SW) Trust ( 3 ) Warrant (right to buy) $ 0.5891 06/25/2021 06/25/2031 Common Stock 157,342 I By MRCF3 Service (SW) Pty Ltd atf MRCF 3 (SW) Trust ( 3 ) Warrant (right to buy) $ 0.5891 10/04/2021 10/04/2031 Common Stock 158,341 I By MRCF3 Service (SW) Pty Ltd atf MRCF 3 (SW) Trust ( 3 )

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Host-Plus Pty Ltd as trustee for the HOSTPLUS Pooled Superannuation Trust LEVEL 9 114 WILLIAM STREET MELBOURNE, C330000 X Signatures /s/ D avid Elia, CEO 11/26/2024 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Represents shares of the Issuer's common stock underlying the same amount of Chess Depositary Interests ("CDIs"). The CDIs are traded on the Australian Securities Exchange (the "ASX") and are held by CHESS Depositary Nominees Pty, Limited, a subsidiary of ASX Limited, the company that operates the ASX. ( 2 )The Securities are held directly by MRCF3 Service (HP) Pty Ltd as trustee of MRCF3 (HP) Trust. The Reporting Person is the sole beneficiary of MRCF3 (HP) Trust and exercises sole voting and dispositive power over the securities described, held by MRCF3 Service (HP) Pty Ltd. ( 3 )The Securities are held directly by MRCF3 Service (SW) Pty Ltd as trustee of MRCF3 (SW) Trust. The Reporting Person is the sole beneficiary of MRCF3 (SW) Trust and exercises sole voting and dispositive power over the securities described, held by MRCF3 Service (SW) Pty Ltd. ( 4 )The Securities are held directly by BB6 SERVICE (HP) COINVESTMENT TRUSCO PTY LTD as trustee of BCP (HP) Co- Investment Trust. The Reporting Person is the sole beneficiary of BCP (HP) Co- Investment Trust and exercises sole voting and dispositive power over the securities described, held by BB6 SERVICE (HP) COINVESTMENT TRUSCO PTY LTD.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.