Comparable stake leader
H.E.S.T. Australia Ltd. as trustee for HESTA
SEC ownership of EBR Systems, Inc.
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001347123.
Disclosed value leader
Exor N.V.
Comparable rows
4/16
Latest evidence
06 May 2026
- Public ticker
- EBRCZ on OTC
- Parsed ownership sources
- 13D/G, 13F, and 3/4/5
- Largest SEC-reported holder
- H.E.S.T. Australia Ltd. as trustee for HESTA
- Latest 13D/G holder
- H.E.S.T. Australia Ltd. as trustee for HESTA
- Latest parsed ownership date
- 06 May 2026
- Issuer CIK
- 0001347123
- Issuer location
- Sunnyvale, CA
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
2 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of EBR Systems, Inc. (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
H.E.S.T. Australia Ltd. a...
Disclosed value leader
Exor N.V.
Comparable rows
4/16
Latest evidence
06 May 2026
13D/G
13F
3/4/5
Lead comparable stake: 8.5%
12 rows are not safely comparable across share classes.
13D/G row: H.E.S.T. Australia Ltd. as trustee for HESTA
Showing 1-8 of 16 holder rows.
Quick read
H.E.S.T. Australia Ltd. as trustee for HESTA leads the comparable SEC ownership view at 8.5%.
4 of 16 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens H.E.S.T. Australia Ltd. as trustee for HESTA's linked filing trail.
Comparable ownership
Top 4
H.E.S.T. Australia Ltd. as truste...
8.5%
Exor N.V.
617%
ORBIMED ADVISORS LLC
21%
Strategic Investment Solutions, I...
0%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 16 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| H.E.S.T. Australia Ltd. as trustee for HESTA |
13D/G
H.E.S.T. Australia Ltd.
|
8.5%
|
—
36,581,484 shares
|
$0 | 30 Jun 2025 |
| Exor N.V. |
13F
Company
|
617%
|
$5,001,704,778
182,543,970 shares
|
— | 31 Mar 2026 |
| ORBIMED ADVISORS LLC |
13F
Company
|
21%
|
$22,079,801
6,210,899 shares
|
— | 31 Mar 2026 |
| Strategic Investment Solutions, Inc. /IL |
13F
Company
|
0%
|
$29,157
127 shares
|
— | 31 Mar 2026 |
| Host-Plus Pty Ltd as trustee for the HOSTPLUS Pooled Superannuation Trust |
3/4/5
10%+ Owner
|
—
class O/S missing
|
$23,109,790
42,795,906 shares
|
— | 30 Sep 2024 |
| Mark H. Carnegie |
3/4/5
10%+ Owner
|
—
class O/S missing
|
$22,197,343
41,106,191 shares
|
— | 30 Sep 2024 |
| Christopher Nave |
3/4/5
Director
|
—
mixed-class rows
|
$11,298,488
209,992 shares
mixed-class rows
|
— | 06 May 2026 |
| Allan R. Will |
3/4/5
Director
|
—
mixed-class rows
|
$831,211
12,465,054 shares
mixed-class rows
|
— | 06 May 2026 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
Insider buy and sell flow is broadly balanced over the last 12 months. No Buy or Sell transactions have been reported since 07 Jun 2025.
Buys
$0
Insiders: 0
Sells
$0
Insiders: 0
Net
$0
Shares: 0
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 0
Shares: 0
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 0 | $0 | $0 | $0 |
| 3-6 | 0 | 0 | $0 | $0 | $0 |
| 6-9 | 0 | 0 | $0 | $0 | $0 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-12 of 12 reporting-owner rows connected to EBR Systems, Inc.. Open a relationship link for the CIK-to-CIK filing trail.
Rows
12
Largest Forms 3/4/5 holder
Host-Plus Pty Ltd as trustee for the HOSTPLUS Pooled Superannuation Trust
Net 12M change
$0
Latest report
06 May 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Host-Plus Pty Ltd as trustee for the HOSTPLUS Pooled Superannuation Trust | 10%+ Owner | $23,109,790 | Mixed | 30 Sep 2024 | ||
| Mark H. Carnegie | 10%+ Owner | $22,197,343 | Mixed | 30 Sep 2024 | ||
| Christopher Nave | Director | $11,298,488 | Mixed | 06 May 2026 | ||
| Allan R. Will | Director | $831,211 | Mixed | 06 May 2026 | ||
| Bronwyn Evans | Director | $308,694 | Mixed | 06 May 2026 | ||
| Michael Hendricksen | Chief Operating Officer | Mixed | 25 Jun 2025 | |||
| Karen Drexler | Director | Mixed | 06 May 2026 | |||
| John McCutcheon | President and CEO, Director | Mixed | 06 May 2026 | |||
| Erik Strandberg | Chief Commercial Officer | Mixed | 25 Jun 2025 | |||
| Gary W. Doherty | Chief Financial Officer | Mixed | 25 Jun 2025 | |||
| David Steinhaus | Director | Mixed | 06 May 2026 | |||
| Trevor J. Moody | Director | Mixed | 06 May 2026 |
Recent insider transactions for EBR Systems, Inc.
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Allan R. Will | EBRCZ | Stock Option (right to buy) | Award | 42,106 | 42,106 | 06 May 2026 | Direct | |||
| David Steinhaus | EBRCZ | Stock Option (right to buy) | Award | 34,211 | 34,211 | 06 May 2026 | Direct | |||
| Christopher Nave | EBRCZ | Stock Option (right to buy) | Award | 34,211 | 34,211 | 06 May 2026 | Direct | |||
| Trevor J. Moody | EBRCZ | Stock Option (right to buy) | Award | 34,211 | 34,211 | 06 May 2026 | Direct | |||
| John McCutcheon | EBRCZ | Stock Option (right to buy) | Award | 188,462 | 188,462 | 06 May 2026 | Direct | |||
| Bronwyn Evans | EBRCZ | Stock Option (right to buy) | Award | 34,211 | 34,211 | 06 May 2026 | Direct | |||
| Karen Drexler | EBRCZ | Stock Option (right to buy) | Award | 34,211 | 34,211 | 06 May 2026 | Direct | |||
| John McCutcheon | EBRCZ | Common Stock | Options Exercise | 109,100 | 109,100 | 23 Mar 2026 | Direct | |||
| John McCutcheon | EBRCZ | Stock Option (right to buy) | Options Exercise | -6.86% | -109,100 | 1,480,900 | 23 Mar 2026 | Direct | ||
| Allan R. Will | EBRCZ | Common Stock | Options Exercise | 58,500 | 58,500 | 26 Feb 2026 | Direct | |||
| Allan R. Will | EBRCZ | Stock Option (right to buy) | Options Exercise | -100% | -58,500 | 0 | 26 Feb 2026 | Direct | ||
| Bronwyn Evans | EBRCZ | Common Stock | Options Exercise | 55% | 195,796 | 551,579 | 18 Aug 2025 | By Bronwyn Evans and Peter Douglas Gordon | ||
| Bronwyn Evans | EBRCZ | Employee Stock Option (right to buy) | Options Exercise | -100% | -32,159 | 0 | 18 Aug 2025 | Direct | ||
| Bronwyn Evans | EBRCZ | Employee Stock Option (right to buy) | Options Exercise | -100% | -163,637 | 0 | 18 Aug 2025 | By Bronwyn Evans and Peter Douglas Gordon | ||
| Michael Hendricksen | EBRCZ | Stock Option (right to buy) | Award | 500,000 | 500,000 | 25 Jun 2025 | Direct | |||
| Erik Strandberg | EBRCZ | Stock Option (right to buy) | Award | 400,000 | 400,000 | 25 Jun 2025 | Direct | |||
| Gary W. Doherty | EBRCZ | Stock Option (right to buy) | Award | 500,000 | 500,000 | 25 Jun 2025 | Direct | |||
| Bronwyn Evans | EBRCZ | Common Stock | Exercise of in-the-money or at-the-money derivative security | 9.21% | 30,000 | 355,783 | 19 Jun 2025 | By Bronwyn Evans and Peter Douglas Gordon | ||
| Bronwyn Evans | EBRCZ | Subscription Rights (right to buy) | Exercise of in-the-money or at-the-money derivative security | -100% | -30,000 | 0 | 19 Jun 2025 | By Bronwyn Evans and Peter Douglas Gordon |
* marks a reported price that did not pass the local price check.