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HeartBeam

BEAT on Nasdaq. Market value $37m.

Watch this stockFree. We tell you when something changes.

Should I look at this?

Look carefully before going further

Why it could be worth it

Nothing stands out yet.

What to watch out for

Read the warning sign in its own filings

This is not advice.

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Who owns it

None of the long-term investors we follow own it. 42 funds in all.

Jun '25
Dec '25
Jun '26
Largest holders overall

From 13F filings for the quarter ended 30 June 2026.

Big holders and activists

1 investor owns more than 5%.

  • STROME MARK E
    Passive investor
    at least 6.8%
    (filed with 3 related holders)
    Since 16 April 2026
    What they said

    The Reporting Persons acquired the shares of common stock to which this Schedule 13D relates in the ordinary course of business for investment purposes.

    Read the filing

From Schedule 13D and 13G filings: anyone owning more than 5% must file one.

What insiders did

In the last 12 months, 8 insiders bought $901,000 of shares on the open market. 1 sold $182,090.

  • Ferrari Richard
    Director
    Bought
    Date
    16 April 2026
    Shares
    57,500
    Price
    $0.80
    Value
    $46,000
  • Cruickshank Tim
    CFO
    Bought
    Date
    16 April 2026
    Shares
    31,250
    Price
    $0.80
    Value
    $25,000
  • Elfrink Willem
    Director
    Bought
    Date
    16 April 2026
    Shares
    187,500
    Price
    $0.80
    Value
    $150,000
  • JAFF MICHAEL R
    Director
    Bought
    Date
    16 April 2026
    Shares
    31,250
    Price
    $0.80
    Value
    $25,000
  • Vajdic Branislav
    Director
    Bought
    Date
    16 April 2026
    Shares
    31,250
    Price
    $0.80
    Value
    $25,000
  • ENO Robert Paul
    President
    Bought
    Date
    16 April 2026
    Shares
    12,500
    Price
    $0.80
    Value
    $10,000
  • Ortigas-Wedekind Marga
    Director
    Bought
    Date
    16 April 2026
    Shares
    25,000
    Price
    $0.80
    Value
    $20,000
  • STROME MARK E
    Director
    Bought
    Date
    16 April 2026
    Shares
    750,000
    Price
    $0.80
    Value
    $600,000
  • de Urioste George
    Director
    Sold
    Date
    18 December 2025
    Shares
    33,185
    Price
    $2.83
    Value
    $93,914
  • de Urioste George
    Director
    Sold
    Date
    17 December 2025
    Shares
    23,961
    Price
    $3.68
    Value
    $88,176

From Form 4 filings: insiders must report trades in their own company's shares within two days.

Warning signs in its filings

Problems the company itself reported to the SEC, in its own words.

1 serious warning sign in HeartBeam’s filings.

We look for five warning signs: doubt it can keep going, weak checks on its own accounts, a notice that its past accounts can't be relied on, a change of auditor, and one customer bringing in a big share of sales. We don't check lawsuits, investigations or debt yet.

We checked the auditor's report, internal controls, restatement notices, auditor changes and big customers in the 10-K filed 12 Mar 2026, plus the 10-Q filed 13 Aug 2026 and 6 later 8-Ks.

  • Doubt it can keep going

    Serious

    The company or its auditor warned it may not have enough money to last the next year.

    “These factors raise substantial doubt regarding the Company’s ability to continue as a going concern.”
    Show the full paragraph
    Based on the current business plan assumptions, existing financing arrangements and expected cash burn rate, the Company believes that its existing liquidity is insufficient to fund operations for the next twelve months following the issuance of these financial statements. These factors raise substantial doubt regarding the Company’s ability to continue as a going concern.

    From the 10-Q filed 13 August 2026, Part I, Item 1. Financial Statements. Read it in the filing

A 10-K is the yearly report every US company files with the SEC. An 8-K is a short notice of a big event.

The deep dive

Everything above is arithmetic on public filings. The deep dive reads the last ten years of annual reports, the proxy statements, and the earnings calls, then argues the case the way Buffett, Klarman, and Hohn would, and checks every claim against the source.

  • What the business is worth, as a range, and the margin of safety at today’s price
  • Prices to start buying, buy, and buy hard
  • The three things that would make this a mistake
  • Every number footnoted to the filing it came from
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What a finished deep dive looks like

Not advice. Numbers on this page come from SEC filings and are updated each night; prices are updated again after the US market closes. The five-year figures are rounded.