As of November 6, 2026, one holder's latest Schedule 13D or 13G filing report owning 5% or more of HeartBeam, Inc. The largest reported stake is Strome Mark E's, at 6.8%. One filing is on record since August 13, 2026 (Schedule 13D/A, August 13, 2026).
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Key facts
- · Reporting person: Strome Mark E · Sole voting: 114,200 · Shared voting: 3,650,000 · Sole dispositive: 114,200 · Shared dispositive: 3,650,000 · SCHEDULE 13D/A, 2026-08-13
- · Reporting person: Strome Group, Inc. · Sole voting: 0 · Shared voting: 3,650,000 · Sole dispositive: 0 · Shared dispositive: 3,650,000 · SCHEDULE 13D/A, 2026-08-13
- · Reporting person: Strome Investment Management LP · Sole voting: 0 · Shared voting: 3,650,000 · Sole dispositive: 0 · Shared dispositive: 3,650,000 · SCHEDULE 13D/A, 2026-08-13
- · Reporting person: Strome Mezzanine Fund II, LP · Sole voting: 0 · Shared voting: 3,650,000 · Sole dispositive: 0 · Shared dispositive: 3,650,000 · SCHEDULE 13D/A, 2026-08-13
- · Holder: Strome Mark E · Percent: 6.8% · SCHEDULE 13D/A
HeartBeam, Inc. has 1 Schedule 13D or 13G filing on record since 2026-08-13. 1 holder's latest filing reports 5% or more of common stock, par value $.0001 per share. Each figure below is the holder's own, as filed, with the filing linked.
Holders
| Holder | Percent | Shares | Latest | Event date |
|---|---|---|---|---|
| 6.8% | 3,764,200 | SCHEDULE 13D/A, 2026-08-13 | 2026-04-16 |
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More on HeartBeam, Inc. and the records around it.
HeartBeam, Inc. elsewhere on the record
- Leadership changes Aug 2026
Companies that share a holder
- STROME MARK E also filed stake reports on 2 other companies: Cue Biopharma, Inc. (Oct 2026), Zivo Bioscience (Feb 2026)
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Voting and dispositive power, as filed
| Reporting person | Sole voting | Shared voting | Sole dispositive | Shared dispositive | Filing |
|---|---|---|---|---|---|
| Strome Mark E | 114,200 | 3,650,000 | 114,200 | 3,650,000 | SCHEDULE 13D/A, 2026-08-13 |
| Strome Group, Inc. | 0 | 3,650,000 | 0 | 3,650,000 | SCHEDULE 13D/A, 2026-08-13 |
| Strome Investment Management LP | 0 | 3,650,000 | 0 | 3,650,000 | SCHEDULE 13D/A, 2026-08-13 |
| Strome Mezzanine Fund II, LP | 0 | 3,650,000 | 0 | 3,650,000 | SCHEDULE 13D/A, 2026-08-13 |
The latest filing identifies HeartBeam, Inc. by CUSIP 42238H108 and gives its principal executive office as 2118 Walsh Avenue, Suite 210, Santa Clara, CA 95050 (SCHEDULE 13D/A, 2026-08-13).
Source of funds (Item 3)
On April 16, 2026, the Fund purchased 750,000 shares of common stock in connection with the issuer's underwritten public offering of 12,500,000 shares of its common stock at $0.80 per share. Titan Partners, a division of American Capital Partners, acted as the sole bookrunner for the offering, which priced on April 14, 2026, and closed on April 16, 2026. The Fund funded the purchase in the amount of $600,000 with its own funds.Strome Mark E, SCHEDULE 13D/A, 2026-08-13
Purpose of Transaction (Item 4)
Strome Mark E
The Reporting Persons acquired the shares of common stock to which this Schedule 13D relates in the ordinary course of business for investment purposes.Item 4 of the SCHEDULE 13D/A filed 2026-08-13
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2026-08-13 | Strome Mark E | 6.8% | SCHEDULE 13D/A |
Also on the record for HeartBeam, Inc.
| Date | Record | Figure | Our page | Source |
|---|---|---|---|---|
| June 24, 2026 | Leadership change: Mark Strome departs | — | Leadership changes | Source |
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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.