Bluejay Diagnostics, Inc. (BJDX) Insider Trading
Over the last 3 months, BJDX insiders made 5 open-market buys and 0 sales, a net purchase of $125K (SEC Form 4). Multiple insiders bought within days of each other (cluster buying). Over the last 6 months, 0 institutions increased and 0 reduced their position (13F).
Insider Activity
Sentiment
100/100
Buys (3m)
5
Sells (3m)
0
Net (3m)
$125.0K
Insiders buyingCluster buying
Insider trades by month Buys Sells
Mar
Apr
Sep
Mar
Dec
May
Context3-month price +178.9%Institutions mixed (13F)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| May 18, 2026 | Dey Indranildirector, officer: President and CEO | Buy | 12,500 | $2.00 |
| May 18, 2026 | ZEIDMAN FRED Sdirector | Buy | 12,500 | $2.00 |
| May 18, 2026 | CHASE DONALD Rdirector | Buy | 12,500 | $2.00 |
| May 18, 2026 | Wurth Douglas Clarkdirector | Buy | 12,500 | $2.00 |
| May 18, 2026 | Dey Svetlanadirector | Buy | 12,500 | $2.00 |
| Dec 14, 2023 | Dey Indranildirector, 10 percent owner, officer: President and CEO | Buy | 500 | $3.27 |
| Dec 14, 2023 | Dey Svetlanadirector | Buy | 500 | $3.07 |
| Mar 31, 2023 | Dey Indranildirector, officer: President and CEO | Buy | 8,000 | $0.44 |
| Mar 31, 2023 | Dey Svetlanadirector | Buy | 10,000 | $0.44 |
| Mar 31, 2023 | Dey Indranildirector, officer: President and CEO | Buy | 2,000 | $0.44 |
| Mar 28, 2023 | Dey Indranildirector, officer: President and CEO | Grant | 2,000 | $0.44 |
| Mar 28, 2023 | Dey Indranildirector, officer: President and CEO | Grant | 8,000 | $0.44 |
| Mar 24, 2023 | Dey Svetlanadirector | Grant | 10,000 | $0.44 |
| Feb 16, 2023 | Gemignani Gary Gdirector | Grant | 27,500 | $0.44 |
| Feb 13, 2023 | Fisher Kenneth Rofficer: Chief Financial Officer | Tax | 39,316 | $0.44 |
| Feb 13, 2023 | ZEIDMAN FRED Sdirector | Grant | 27,500 | $0.44 |
| Feb 13, 2023 | Wurth Douglas Clarkdirector | Grant | 27,500 | $0.44 |
| Feb 13, 2023 | Dey Svetlanadirector | Grant | 27,500 | $0.44 |
| Feb 13, 2023 | Dey Indranildirector, officer: President and CEO | Grant | 159,090 | $0.44 |
| Feb 13, 2023 | Dey Indranildirector, officer: President and CEO | Tax | 55,612 | $0.44 |
| Feb 13, 2023 | Fisher Kenneth Rofficer: Chief Financial Officer | Grant | 112,500 | $0.44 |
| Feb 13, 2023 | CHASE DONALD Rdirector | Grant | 27,500 | $0.44 |
| Sep 7, 2022 | Fisher Kenneth Rdirector: Chief Financial Officer | Buy | 20,000 | $1.03 |
| Apr 27, 2022 | Fisher Kenneth Rofficer: Chief Financial Officer | Buy | 20,000 | $0.99 |
| Mar 28, 2022 | Fisher Kenneth Rofficer: Chief Financial Officer | Grant | 65,000 | — |
| Mar 23, 2022 | CHASE DONALD Rdirector: | Grant | 2,500 | — |
| Mar 23, 2022 | Gemignani Gary Gdirector: | Grant | 2,500 | — |
| Mar 23, 2022 | ZEIDMAN FRED Sdirector: | Grant | 2,500 | — |
| Mar 23, 2022 | Wurth Douglas Clarkdirector: | Grant | 2,500 | — |
| Mar 23, 2022 | Dey Svetlanadirector: | Grant | 2,500 | — |
Source: BJDX SEC Form 4 filings, latest May 18, 2026. For informational purposes only — not investment advice.
Institutional activity (13F)
How institutions changed their BJDX positions over the last 6 months (SEC Form 13F).
Increased
0
New positions
6
Reduced
0
Sold out
5
Largest moves
| Institution | Action | Shares | Filed |
|---|---|---|---|
| SABBY MANAGEMENT, LLC | New Position | 29K | May 15, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | New Position | 28K | May 15, 2026 |
| TOWER RESEARCH CAPITAL LLC (TRC) | New Position | 2K | May 15, 2026 |
| UBS GROUP AG | New Position | 124 | May 5, 2026 |
| L1 Global Manager Pty Ltd | New Position | 120 | May 15, 2026 |
| CAITONG INTERNATIONAL ASSET MANAGEMENT CO., LTD | New Position | 3 | May 11, 2026 |
| TWO SIGMA SECURITIES, LLC | Sold Out | 0 | May 15, 2026 |
| CITADEL ADVISORS LLC | Sold Out | 0 | May 15, 2026 |
| ARMISTICE CAPITAL, LLC | Sold Out | 0 | May 15, 2026 |
| RENAISSANCE TECHNOLOGIES LLC | Sold Out | 0 | May 14, 2026 |
| BANK OF AMERICA CORP /DE/ | Sold Out | 0 | May 18, 2026 |
Source: SEC Form 13F filings. For informational purposes only — not investment advice.