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Maxcyte

MXCT on Nasdaq. Market value $111m.

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We have not checked this company yet

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Who owns it

None of the long-term investors we follow own it. 123 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

2 investors own more than 5%.

  • 7.7%
    Since 30 January 2026
  • at least 3.5%−4.2 pts
    (filed with 2 related holders)
    Since 31 December 2025
  • BlackRock, Inc.
    Passive investor
    Sold down below 5%
    Since 30 June 2026
  • RIVER GLOBAL INVESTORS LLP
    Sold down below 5%
    Since 31 July 2026
    What they said

    (b) An extraordinary corporate transaction, such as a merger, reorganization or liquidation, involving the issuer or any of its subsidiaries. As per the Announcement on 24 June 2026 (RNS Number: 4421J), the FCA has approved the change in control and proposed acquisition of River…

    Read the filing
  • Sold down below 5%
    Since 31 March 2026
  • The Vanguard Group
    Passive investor
    Sold down below 5%
    Since 13 March 2026

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

What insiders did

No insider bought shares on the open market in the last 12 months. 1 sold $8,316.

  • Swirsky Douglas J
    CHIEF FINANCIAL OFFICER
    Sold
    Date
    17 March 2026
    Shares
    10,142
    Price
    $0.82
    Value
    $8,316

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.

None of the serious warning signs we check for were found. 1 thing worth knowing.

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 25 Mar 2026, plus the 10-Q filed 13 Aug 2026 and 5 later 8-Ks.

  • One big customer

    Worth knowing

    One customer brings in a big share of sales: 26% last year. Losing that customer would hurt.

    “During the years ended December 31, 2025 and 2024, one customer represented 26% and 23% of revenue, respectively.”

    From the 10-K filed 25 March 2026, Item 8. Financial Statements and Notes. 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.