// company-profile
Lucid Diagnostics Inc.
LUCDExchangeNasdaqSectorSurgical & Medical Instruments & ApparatusInc.DEFilings42Insiders12
// api This Lucid Diagnostics Inc. insider-trading data is served live by the Form4API insider trading API. Get the same data via API.
// activity-summary
No insider transactions in the last 30 days.
// 90-day insight
Over the last 90 days, Lucid Diagnostics Inc. insiders bought $245K across 1 transaction with no open-market sales.
- Most active insider: Matheis Dennis with 1 transaction totaling $245K.
- Largest single purchase: $245K by Matheis Dennis on May 20, 2026.
Activity skews bullish — buys outpace sales.
Institutional Ownership
Top 13F-HR holders of Lucid Diagnostics Inc. as of 2026-03-31
Total reported AUM
$39.4M
QoQ change
+29.8%
Reporting period
2026-03-31
#1
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
$4.8M
4.2M shares
#2
MASTERS CAPITAL MANAGEMENT LLC
CIK 1104186
$4.6M
4.0M shares
#3
Aberdeen Group plc
CIK 1716774
$4.2M
3.6M shares
Data source: SEC Form 13F-HR filings. Joined with insider activity above — see who's loading up institutionally while insiders are trading. Full 13F-HR API →
Insider Transactions
Sourced from SEC EDGAR Form 4 filings. Updated hourly.
| Date | Insider | Company | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| May 20, 2026 | Matheis Dennis | LUCD | Purchase | 245,000 | $1.00 | $245K |
| Feb 20, 2026 | Aklog Lishan | LUCD | Award | 2,170,000 | $0.00 | $0K |
| Feb 20, 2026 | Cox James L | LUCD | Award | 123,000 | $0.00 | $0K |
| Feb 20, 2026 | Matheis Dennis | LUCD | Award | 123,000 | $0.00 | $0K |
| Feb 20, 2026 | White Debra | LUCD | Award | 123,000 | $0.00 | $0K |
45 more transactions hidden
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