Bluejay Diagnostics, Inc.: 5%+ holders

As of November 10, 2026, 3 holders' latest Schedule 13D or 13G filings report owning 5% or more of Bluejay Diagnostics, Inc. The largest reported stake is Mitchell P. Kopin's, at 9.99%. 15 filings are on record since October 16, 2025 (Schedule 13G, June 5, 2026).

Northstrive Fund II LP also filed stake reports on 2 other companies ↓

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Key facts

• Filing 2026-08-14 · Reporting person: Armistice Capital, LLC · Sole voting: 0 · Shared voting: 142,728 · Sole dispositive: 0 · Shared dispositive: 142,728 · SCHEDULE 13G, 2026-08-14
• Filing 2026-08-13 · Reporting person: Ayrton Capital LLC · Sole voting: 107,722 · Shared voting: 0 · Sole dispositive: 107,722 · Shared dispositive: 0 · SCHEDULE 13G, 2026-08-13
• Filing 2026-06-05 · Reporting person: Mitchell P. Kopin · Sole voting: 0 · Shared voting: 114,840 · Sole dispositive: 0 · Shared dispositive: 114,840 · SCHEDULE 13G, 2026-06-05
• Event date 2026-06-02 · Holder: Braeden Lichti · Percent: 0% · Shares: 0 · SCHEDULE 13D/A
• Event date 2026-06-02 · Holder: NorthStrive Fund II LP · Percent: 0% · Shares: 0 · SCHEDULE 13D/A

Bluejay Diagnostics, Inc. has 15 Schedule 13D or 13G filings on record since 2025-10-16. 3 holders' latest filing reports 5% or more of common stock, par value $0.0001 per share. Each figure below is the holder's own, as filed, with the filing linked.

Holders

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More on Bluejay Diagnostics, Inc. and the records around it.

Bluejay Diagnostics, Inc. elsewhere on the record

• Who owns it

Companies that share a holder

• Northstrive Fund II LP also filed stake reports on 2 other companies: enVVeno Medical Corp (Feb 2026), ENVERIC BIOSCIENCES, INC. (Dec 2025)
• Braeden Lichti also filed stake reports on 3 other companies: enVVeno Medical Corp (Sep 2026), PMGC Holdings Inc. (Jun 2026), ENVERIC BIOSCIENCES, INC. (Dec 2025)
• Ayrton Capital LLC also filed stake reports on 31 other companies: BTC Digital Ltd. (Aug 2026), DEFSEC Technologies Inc. (Aug 2026), ENVERIC BIOSCIENCES, INC. (Aug 2026)

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What the Full Report on Bluejay Diagnostics, Inc. covers

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2. Which Company This Is

3. What They Do, And How The Money Works

4. Who Runs It, And How To Reach Them

5. The Money: Funding, Valuation, Runway

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8. Sources

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Voting and dispositive power, as filed

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The latest filing identifies Bluejay Diagnostics, Inc. by CUSIP 095633608 and gives its principal executive office as 360 Massachusetts Avenue, Suite 203, Acton, MA 01720 (SCHEDULE 13G, 2026-08-14).

What the percentages are based on

The percentages below are based on (i) 1,034,715 shares of Common Stock of the Issuer that were outstanding as of May 4, 2026; and (ii) 42,722 shares of Common Stock issuable on the exercise of the Warrants held by the Reporting Persons. The amount of shares outstanding was based upon a statement in the Issuer's 10-Q filed on May 7, 2026.Ayrton Capital LLC, SCHEDULE 13G, 2026-08-13

Source of funds (Item 3)

Not applicable. This Amendment reports only the disposition of all shares previously reported on the Schedule 13D and no additional securities were acquired since the Schedule 13D filed with the SEC on March 11, 2026 As of the date of this Amendment, the Reporting Persons beneficially own 0 shares of the Issuer's Common Stock.Braeden Lichti, SCHEDULE 13D/A, 2026-06-02

Not applicable. This Amendment reports only the disposition of all shares previously reported on the Schedule 13D and no additional securities were acquired since the Schedule 13D filed with the SEC on March 11, 2026 As of the date of this Amendment, the Reporting Persons beneficially own 0 shares of the Issuer's Common Stock.NorthStrive Fund II LP, SCHEDULE 13D/A, 2026-06-02

Purpose of Transaction (Item 4)

Braeden Lichti

Since the filing of the Reporting Persons' Schedule 13D with the SEC on March 11, 2026, the Reporting Persons have disposed of all shares of common stock of the Issuer. As of June 2, 2026, the Reporting Persons no longer beneficially own any shares of the Issuer's Common Stock.Item 4 of the SCHEDULE 13D/A filed 2026-06-02

NorthStrive Fund II LP

Since the filing of the Reporting Persons' Schedule 13D with the SEC on March 11, 2026, the Reporting Persons have disposed of all shares of common stock of the Issuer. As of June 2, 2026, the Reporting Persons no longer beneficially own any shares of the Issuer's Common Stock.Item 4 of the SCHEDULE 13D/A filed 2026-06-02

Timeline

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Questions about who owns Bluejay Diagnostics, Inc.

Who owns Bluejay Diagnostics, Inc.?

On this page, 3 holders' latest ownership filings report 5% or more of Bluejay Diagnostics, Inc.: Mitchell P. Kopin (9.99%, Schedule 13G, filed 2026-06-05), Armistice Capital, LLC (9.99%, Schedule 13G, filed 2026-08-14) and Ayrton Capital LLC (9.99%, Schedule 13G, filed 2026-08-13).

Who are the largest shareholders of Bluejay Diagnostics, Inc.?

By the share each holder's latest filing reports, the largest holders of Bluejay Diagnostics, Inc. on this page are Mitchell P. Kopin (9.99%), Armistice Capital, LLC (9.99%) and Ayrton Capital LLC (9.99%).

When did Mitchell P. Kopin buy into Bluejay Diagnostics, Inc.?

The filings give report dates, not purchase dates. The earliest filing from Mitchell P. Kopin on this page is the Schedule 13G, filed 2025-10-16, reporting 9.99%; its latest, Schedule 13G filed 2026-06-05, reports 9.99%.

Is this an audit or a full list?

Neither. The ownership list on this page covers only Schedule 13D and 13G filings, which holders make once they own 5% or more of a class of shares (an amendment can report a stake that has since fallen below 5%); 15 such filings are shown here. It is not an audit and not a full cap table: holders who never reached 5% are not listed, and a stake can change after its latest filing.

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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.

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