Lucid Diagnostics Inc. (LUCD) Insider Trading & SEC Filings

Updated Jul 16, 2026 · Last SEC filing 2026-05-21

Lucid Diagnostics Inc. (LUCD) has filed 1 SEC Form 4 insider transactions in the last 90 days, with the most recent on 2026-05-21. 4 Form 8-K material event filings were reported by LUCD in the last 90 days. InsiderAlpha tracks every LUCD SEC filing — Form 4, Form 144, and 8-K — in real time, including Rule 10b5-1 plan detection.

About Lucid Diagnostics Inc. (LUCD)

SIC classification	Surgical & Medical Instruments & Apparatus (SIC 3841)
SEC CIK	0001799011

90-Day SEC Filing Activity

Form 4 filings (90d)	1
Form 8-K filings (90d)	4
Latest Form 4 filing	2026-05-21

Recent LUCD Insider Transactions (Form 4)

Date	Insider	Role	Transaction	Shares	Price	Value	Filing
2026-05-20	Matheis Dennis	Director	P — Open-market purchase	245.0K	$1.00	$245K	SEC
2026-02-20	Gordon Michael Adam	General Counsel and Secretary	A — Grant or award	300.0K	$0.00	—	SEC
2026-02-20	Aklog Lishan	Chief Executive Officer	A — Grant or award	2.17M	$0.00	—	SEC
2026-02-20	Matheis Dennis	Director	A — Grant or award	123.0K	$0.00	—	SEC
2026-02-20	White Debra	Director	A — Grant or award	123.0K	$0.00	—	SEC
2026-02-20	Sparks Ronald M	Director	A — Grant or award	123.0K	$0.00	—	SEC
2026-02-20	PALUMBO JOHN R	Director	A — Grant or award	123.0K	$0.00	—	SEC
2026-02-20	Lapidus Stanley	Director	A — Grant or award	123.0K	$0.00	—	SEC
2026-02-20	Cox James L	Director	A — Grant or award	123.0K	$0.00	—	SEC
2026-02-20	MCGRATH DENNIS M	Chief Financial Officer	A — Grant or award	470.0K	$0.00	—	SEC
2026-02-20	O'Neil Shaun	President and COO	A — Grant or award	620.0K	$0.00	—	SEC
2026-02-20	SOKOLOV JACQUE J	Director	A — Grant or award	123.0K	$0.00	—	SEC
2025-08-20	Matheis Dennis	Director	P — Open-market purchase	100.0K	$1.02	$102K	SEC

All transactions sourced from SEC EDGAR Form 4 filings for Lucid Diagnostics Inc. (LUCD). Updated in real time as new filings are submitted to the SEC.

Most-Active LUCD Insiders — Last 90 Days

Insider	Form 4 filings	Total transaction value
Matheis Dennis	1	$245K

Recent LUCD Form 8-K Material Events

2026-06-24 — Item 5.03, 5.07, 9.01 [SEC]
2026-05-14 — Item 2.02, 7.01, 9.01 [SEC]
2026-04-24 — Item 7.01, 8.01, 9.01 · Financing · neutral [SEC]
Lucid Diagnostics closed an underwritten public offering of 18 million shares at $1.00 per share, raising approximately $16.8 million in net proceeds after underwriting costs. The company intends to use the proceeds for working capital and general corporate purposes.
2026-04-23 — Item 1.01, 7.01, 9.01 · Financing · neutral [SEC]
Lucid Diagnostics Inc. entered into an underwriting agreement on April 23, 2026 for a public offering of 18,000,000 shares of common stock at $1.00 per share, with gross proceeds of $18,000,000 before underwriting discounts and expenses. The offering is expected to close on April
2026-03-26 — Item 2.02, 7.01, 9.01 · Earnings · neutral [SEC]
Lucid Diagnostics Inc. announced financial results for fiscal year ended December 31, 2025 and provided a business update on March 26, 2026. The filing contains standard annual earnings disclosure without explicit beat/miss or guidance language.

Recent Insider Filings

2026-05-21 — Matheis Dennis (Director)
2026-02-25 — Aklog Lishan (Chief Executive Officer)
2026-02-24 — Matheis Dennis (Director)
2026-02-24 — White Debra (Director)
2026-02-24 — Sparks Ronald M (Director)

Form 4 Transaction Code Reference

SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in LUCD insider filings:

P	Open-market purchase by the insider
S	Open-market sale by the insider
A	Grant, award, or other acquisition from the issuer
M	Exercise or conversion of derivative security (e.g. options)
F	Payment of exercise price or tax liability via share withholding
G	Bona-fide gift of securities
D	Disposition to the issuer (e.g. share buyback participation)
J	Other acquisition or disposition
X	Exercise of in-the-money or at-the-money derivative security
C	Conversion of derivative security
V	Transaction voluntarily reported earlier than required

LUCD Insider Trading — FAQ

What is the latest insider trade for LUCD?: Lucid Diagnostics Inc. (LUCD) had 1 insider filings in the last 90 days, with the most recent on 2026-05-21. InsiderAlpha tracks every Form 4, 10-K, 10-Q, and 8-K filing in real time.
How many insiders are buying LUCD stock?: 0 insider purchases of LUCD were filed in the last 90 days.
How many insiders are selling LUCD stock?: 0 insider sales of LUCD were filed in the last 90 days.
Where can I see LUCD SEC filings (Form 4, 10-K, 10-Q, 8-K)?: InsiderAlpha aggregates every LUCD SEC filing — Form 4 insider transactions, 10-K and 10-Q quarterly reports, and 8-K material event disclosures — in one timeline.

Related Companies — Recent Insider Activity

Learn More

Open the live LUCD dashboard on InsiderAlpha for real-time alerts, charting, and full historical filing search.