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Delisting risk

BJDX · NASDAQ · Medical - Devices

Bluejay Diagnostics (BJDX)

Develops near-patient IL-6 diagnostics for sepsis risk assessment.

$0.8500

Pre-market+0.00 (+0.57%)

At close$0.8452(−0.27%)

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Breakdown13F · 13D/G · Form 4

Institutions6 holders · as of Mar 31, 2026	5.69%	58.8K shares
Insiders5 holders · as of Aug 18, 2026	8.76%	90.7K shares
Strategic holders2 holders · as of Jul 22, 2026	8.90%	92.1K shares
Otherremainder	76.65%	793.2K shares

1.03M company shares as of Aug 25, 2026 · institutions as of Mar 31, 2026 · holders as of their latest filing

Two share counts disagree (4.47M in the company's Sep 3, 2026 report, 1.03M elsewhere); stakes use the report.

A stock split fell inside the quarter, so quarter-on-quarter changes are not shown.

Top shareholders13F · 13D/G · Form 4

Holder	Stake	Shares	Evidence
Ayrton Capital LLCInstitution	10.41%	107,722	13Gfiled Aug 13, 2026 ↗
HRT Financial LPStrategic10 percent owner	8.90%	92,055	Form 4filed Jul 13, 2026 ↗
Indranil DeyInsiderdirector, officer: President and CEO	3.92%	40,522	Form 4filed Aug 18, 2026 ↗
Sabby Management, LLCInstitution	2.78%	28,726	13Fas of Mar 31, 2026
Geode Capital Management, LLCInstitution	2.72%	28,127	13Fas of Mar 31, 2026
Douglas Clark WurthInsiderdirector	1.22%	12,608	Form 4filed May 18, 2026 ↗
Donald R. ChaseInsiderdirector	1.21%	12,525	Form 4filed May 18, 2026 ↗
Svetlana DeyInsiderdirector	1.21%	12,501	Form 4filed May 18, 2026 ↗
Fred S. ZeidmanInsiderdirector	1.21%	12,500	Form 4filed May 18, 2026 ↗
Tower Research Capital LLC (TRC)Institution	0.17%	1,729	13Fas of Mar 31, 2026
UBS Group AGInstitution	0.01%	124	13Fas of Mar 31, 2026
L1 Global Manager PTY LtdInstitution	0.01%	120	13Fas of Mar 31, 2026
Bank of America Corp /DE/Strategic10 percent owner	0.00%	8	Form 4filed Jul 22, 2026 ↗
Caitong International Asset Management Co., LtdInstitution	0.00%	3	13Fas of Mar 31, 2026
Armistice Capital, LLCStrategic	—9.99% of class, as filed	—	13Gfiled Aug 14, 2026 ↗
Douglas C. WurthInsider	—27.26% of class, as filed	—	13Dfiled Dec 22, 2021 ↗
Indranil (Neil) DeyInsider	—35.76% of class, as filed	—	13Dfiled Dec 22, 2021 ↗
L1 Capital Global Opportunities Master Fund, Ltd.Institution	—9.99% of class, as filed	—	13Gfiled Jul 3, 2024 ↗
Mitchell P. KopinInsider	—9.99% of class, as filed	—	13Gfiled Jun 5, 2026 ↗
Kenneth R. Fisher¹Insiderofficer: Chief Financial Officer	0.00%	4	Form 4filed Feb 13, 2023 ↗
Jason Cook²Insiderofficer: Chief Technology Officer	0.00%	1	Form 4filed Mar 16, 2023 ↗
Gary G. Gemignani³Insiderdirector	0.00%	1	Form 4filed Feb 16, 2023 ↗
Gordon Winston Kinder⁴Insiderofficer: Chief Financial Officer	0.00%	1	Form 4filed Mar 21, 2022 ↗

Last filed Feb 13, 2023; leaving the company requires no filing. Not in the bar.
Last filed Mar 16, 2023; leaving the company requires no filing. Not in the bar.
Last filed Feb 16, 2023; leaving the company requires no filing. Not in the bar.
Last filed Mar 21, 2022; leaving the company requires no filing. Not in the bar.

13F — a manager's quarterly holdings · 13D/13G — an ownership statement filed at 5% or more · Form 4 — an insider's transaction report

Institutions13F, as of Mar 31, 2026

6 holders · 58.8K shares

Holder	Shares	% outstanding	Filed
Sabby Management, LLC	28.7K	2.78%	May 15, 2026
Geode Capital Management, LLC	28.1K	2.72%	May 15, 2026
Tower Research Capital LLC (TRC)	1.7K	0.17%	May 15, 2026
UBS Group AG	124	0.01%	May 5, 2026
L1 Global Manager PTY Ltd	120	0.01%	May 15, 2026
Caitong International Asset Management Co., Ltd	3	0.00%	May 11, 2026

Ownership statements13D/G · 5% or more, as filed

Holder	% of class	Shares	Form	Filed
Armistice Capital, LLC	9.99%	142.7K	13G	Aug 14, 2026 ↗
Ayrton Capital LLC	9.99%	107.7K	13G	Aug 13, 2026 ↗
Mitchell P. Kopin	9.99%	0	13G	Jun 5, 2026 ↗
Moez Kassamincl. Tony Moore, Anson Advisors Inc. +3 more	5.10%		13G	Nov 14, 2024 ↗

Insider tradesForm 4

Latest trades

Date	Insider	Type	Shares	Avg price	Owned after
Jul 10, 2026	HRT Financial LP10 percent owner	Sale	34,938	$1.40	92,055
Jul 9, 2026	HRT Financial LP10 percent owner	Purchase	64,047	$1.51	126,993
Mar 14, 2026	Svetlana Deydirector	Purchase	12,500	$2.00	12,501
Mar 14, 2026	Fred S. Zeidmandirector	Purchase	12,500	$2.00	12,500
Mar 14, 2026	Donald R. Chasedirector	Purchase	12,500	$2.00	12,525
Mar 14, 2026	Indranil Deydirector, officer: President and CEO	Purchase	12,500	$2.00	12,522
Mar 14, 2026	Douglas Clark Wurthdirector	Purchase	12,500	$2.00	12,608

CongressHouse and Senate disclosures

Not reported.