← United States · Coverage record
US · SEC FORM 4
Lucid Diagnostics Inc.
LUCD · Nasdaq · CIK 0001799011 · Healthcare · Medical Devices
INSIDER SIGNAL
1 buyers · 1 purchase transaction lines · $245.0K gross purchase
WHY THIS SIGNAL?
Score anatomy
Each bar shows the contribution to the current score; the weights and formula stay unchanged.
What is holding the score back?
- ⚠ Cluster breadth is moderate · 1 insider(s), not 4+
- ⚠ Purchase size is modest relative to the model scale
- ⚠ Purchase activity is becoming less recent
- ✓ Role scores high · most senior buyer: Director
Purchase-size comments are relative to the model scale. Average daily volume is a separate market-context diagnostic.
US-v1.2 ranks qualifying equity purchases under the current 180-day rules. The score is a research priority, not a return forecast or probability. Backtests have not shown that a higher US score is followed by better returns.
Insider activity timeline
Owner lanes show the latest 180 days. Symbol shape identifies the transaction type; sales remain context only.
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Purchase breadth & concentration
Roles in the peak window: Director. Concentration uses priced qualifying P lines only and does not change the saved score.
SIGNAL HISTORY
Latest recorded score
- 49.2
- 49.2
- 49.2
- 49.2
- 49.1
Only scores saved when a full US scoring run completed are shown; gaps are not reconstructed.
Recent Form 4 activity
P is an open-market or private purchase. S is a sale. M, F, A and G usually describe exercises, tax withholding, awards and gifts. These categories remain visually separate.
Market context
Market context provides additional background on recent price performance and risk. It does not affect the Insider Signal.
Price performance
- 1M
- -20.6%
- 3M
- -35.6%
- 6M
- -44.5%
- 12M
- -47.7%
Volatility & liquidity
- Volatility
- 69.3%
- Beta
- —
- Avg daily value
- USD 877,739
Valuation
- Market cap
- USD 129.7M
- P/E
- —
Fundamentals
- Profit margin
- —
- ROE
- -530.4%
- Industry
- Medical Devices
Market data
Price data up to: 2026-10-11 · Price source: OpenBB/yfinance; volume from price cache (yfinance) · From SEC filings: Market cap, ROE · Fiscal year ended: 2025-12-31 · Market cap is the shares outstanding stated on the filing cover multiplied by the latest close. Share count date: 2026-08-10 · Status: PASS
Short interest
Short interest is external context reported to FINRA by broker-dealers. It does not affect the Insider Signal.
- Shares short
- 13,455,236
- Previous report
- 12,830,303
- Avg daily volume
- 1,303,769
- Days to cover
- 10.3
FINRA settlement date: 2026-09-30 · Captured 2026-10-12 · FINRA equity short interest ↗. A share count, published about a week after each of two settlement dates a month; not a percentage of shares outstanding.
Historical equity purchases
Qualifying code P transactions in the local Form 4 history, including purchases outside the current signal window.
| Transaction date | Reporting owner | Type | Security | Shares | Avg. price | Approx. value | Source |
|---|---|---|---|---|---|---|---|
| 2026-05-20 | Matheis Dennis | Purchase (P) | Common Stock | 245,000 | USD 1.00 | USD 245,000 | SEC filing ↗ |
| 2025-08-20 | Matheis Dennis | Purchase (P) | Common Stock | 100,000 | USD 1.02 | USD 102,000 | SEC filing ↗ |
| 2025-05-22 | Matheis Dennis | Purchase (P) | Common Stock | 33,218 | USD 1.32 | USD 43,848 | SEC filing ↗ |
| 2025-05-22 | Matheis Dennis | Purchase (P) | Common Stock | 33,218 | USD 1.32 | USD 43,848 | SEC filing ↗ |
| 2025-05-21 | Matheis Dennis | Purchase (P) | Common Stock | 129,684 | USD 1.32 | USD 171,183 | SEC filing ↗ |
| 2025-05-21 | Matheis Dennis | Purchase (P) | Common Stock | 129,684 | USD 1.32 | USD 171,183 | SEC filing ↗ |
| 2025-05-20 | Matheis Dennis | Purchase (P) | Common Stock | 187,098 | USD 1.30 | USD 243,227 | SEC filing ↗ |
| 2025-05-20 | Matheis Dennis | Purchase (P) | Common Stock | 187,098 | USD 1.30 | USD 243,227 | SEC filing ↗ |
| 2021-10-18 | PAVmed Inc. | Purchase (P) | Common stock | 571,428 | USD 14.00 | USD 7,999,992 | SEC filing ↗ |
Form 4 evidence
12 transaction lines in the latest 365-day window; 61 in local history.
| Date | Owner | Type | Security | Shares | Avg. price | Approx. value | Source |
|---|---|---|---|---|---|---|---|
| 2026-05-20 | Matheis Dennis | Purchase (P) | Common Stock | 245,000 | USD 1.00 | USD 245,000 | SEC filing ↗ |
| 2026-02-20 | White Debra | Award / grant (A) | Common Stock | 123,000 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-02-20 | Sparks Ronald M | Award / grant (A) | Common stock | 123,000 | USD 0.00 | USD 0 | SEC filing ↗ |
Show recent Form 4 evidence (12 grouped rows)
| Date | Owner | Type | Security | Shares | Avg. price | Approx. value | Source |
|---|---|---|---|---|---|---|---|
| 2026-05-20 | Matheis Dennis | Purchase (P) | Common Stock | 245,000 | USD 1.00 | USD 245,000 | SEC filing ↗ |
| 2026-02-20 | White Debra | Award / grant (A) | Common Stock | 123,000 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-02-20 | Sparks Ronald M | Award / grant (A) | Common stock | 123,000 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-02-20 | SOKOLOV JACQUE J | Award / grant (A) | Common Stock | 123,000 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-02-20 | PALUMBO JOHN R | Award / grant (A) | Common Stock | 123,000 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-02-20 | O'Neil Shaun | Award / grant (A) | Common stock | 620,000 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-02-20 | Matheis Dennis | Award / grant (A) | Common Stock | 123,000 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-02-20 | MCGRATH DENNIS M | Award / grant (A) | Common stock | 470,000 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-02-20 | Lapidus Stanley | Award / grant (A) | Common Stock | 123,000 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-02-20 | Gordon Michael Adam | Award / grant (A) | Common stock | 300,000 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-02-20 | Cox James L | Award / grant (A) | Common Stock | 123,000 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-02-20 | Aklog Lishan | Award / grant (A) | Common Stock | 2,170,000 | USD 0.00 | USD 0 | SEC filing ↗ |
Multiple price lines in one filing are grouped and share-weighted. Price and value are blank when a grouped filing line lacks price evidence.
Snapshot & identity
| Snapshot date | 2026-10-18 |
|---|---|
| Ranking version | US-v1.2 |
| Data quality | PASS ELIGIBLE · — |
| Ticker | LUCD |
| CIK | 0001799011 |
| Sector | Healthcare |
| Industry | Medical Devices Yahoo Finance |
| SEC SIC | 3841 Surgical & Medical Instruments & Apparatus |
| Exchange | Nasdaq |
Data coverage
| Local Form 4 history | 61 transaction lines from 2021-10-18 to 2026-05-20 9 P purchase lines · 12 S sale lines · 40 other lines |
|---|---|
| SEC company submissions | Open SEC filings ↗ |
Local ledger as of 2026-10-18. Mapping status is an audit field and does not erase SEC filing evidence.