Security key
42238H108
HeartBeam, Inc. - Common Stock, par value $.0001 per share (BEAT)
CUSIP: 42238H108
Q3 2026 13F Holders as of 30 Sep 2026
- Security type / class
- Equity / Common Stock, par value $.0001 per share
- Total 13F shares
- 12,000
- Total 13F value
- $4,399
- Share change
- +6,000
- SEC-reported price per share
- $0.37
- Number of holders
- 1
- Value change
- +$2,199
- Number of buys
- 1
- Shares outstanding
- 55,355,882
Holder snapshot
5 signals
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q3 2026
Institutions
1
Top holders
1
BEAT full security history
Ownership snapshot
Full 13F holder table
Previous quarter: Q2 2026
HeartBeam, Inc. SEC filings
HeartBeam, Inc. company facts
Broader feeds
Reporting periods
Holder history for CUSIP 42238H108
Recent filing periods:
Ownership snapshot
Top reported holders of BEAT - HeartBeam, Inc. - Common Stock, par value $.0001 per share (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
Mark E. Strome
Disclosed value leader
Mark E. Strome
Comparable rows
15/15
Latest evidence
30 Jun 2026
3/4/5
13D/G
13F
Lead comparable stake: 6.8%
13D/G row: Mark E. Strome
Showing 1-6 of 15 holder rows.
Quick read
Mark E. Strome leads the comparable SEC ownership view at 6.8%.
15 of 15 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 Mark E. Strome's linked filing trail.
Comparable ownership
Top 5
Mark E. Strome
6.8%
VANGUARD CAPITAL MANAGEMENT LLC
3.9%
BlackRock, Inc.
1.8%
CORSAIR CAPITAL MANAGEMENT, L.P.
1.6%
Bleichroeder LP
1.1%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Mark E. Strome |
3/4/5
13D/G
Director · STROME MARK E
|
6.8%
from 13D/G
|
$3,050,743
3,751,863 shares
mixed-class rows
|
-$295,000 | 16 Apr 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC |
13F
Company
|
3.9%
|
$1,603,134
2,137,512 shares
|
— | 30 Jun 2026 |
| BlackRock, Inc. |
13F
Company
|
1.8%
|
$740,878
987,837 shares
|
— | 30 Jun 2026 |
| CORSAIR CAPITAL MANAGEMENT, L.P. |
13F
Company
|
1.6%
|
$684,375
912,500 shares
|
— | 30 Jun 2026 |
| Bleichroeder LP |
13F
Company
|
1.1%
|
$468,750
625,000 shares
|
— | 30 Jun 2026 |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
Company
|
0.87%
|
$359,585
479,386 shares
|
— | 30 Jun 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.
13F holder rows
Institutional holders as of Q3 2026
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
1
Shares
12,000
Rows available
1
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q3 2026 vs Q2 2026 Across Filers
Q2 2026 holders
41
Q3 2026 holders
1
Holder diff
-40
| Investor | Q2 2026 Shares | Q3 2026 Shares | Share Diff | Share Chg % | Q2 2026 value | Q3 2026 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend