Lucid Diagnostics Inc.
Lucid Diagnostics Inc. (LUCD) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · LUCD · as of Sep 30, 2025
Ownership Breakdown
86
Institutional Holders
▲ 14 vs Q2
$35.52M
Total Inst. Value
▲ $13.64M vs Q2
102.30M
Shares Outstanding
freeFloat 37.12%
35.17M
13F Shares Held
▲ 16.21M vs Q2
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
LUCD largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
VANGUARD GROUP INC surgical & medical instruments & apparatus | 4.52M | 4.57% | 4.57% | $4.57B | Nov 7, 2025 | ▲ 396.7K |
MASTERS CAPITAL MANAGEMENT LLC surgical & medical instruments & apparatus | 4.00M | 4.04% | 4.04% | $4.04B | Nov 14, 2025 | ▲ 1.27M |
BLACKROCK, INC. surgical & medical instruments & apparatus | 3.67M | 3.71% | 3.71% | $3.71B | Nov 12, 2025 | ▲ 51.0K |
TWO SEAS CAPITAL LP surgical & medical instruments & apparatus | 3.00M | 3.03% | 3.03% | $3.03B | Nov 14, 2025 | NEW |
AWM INVESTMENT COMPANY, INC. surgical & medical instruments & apparatus | 2.99M | 3.02% | 3.02% | $3.02B | Nov 13, 2025 | NEW |
GHISALLO CAPITAL MANAGEMENT LLC surgical & medical instruments & apparatus | 2.96M | 2.99% | 2.99% | $2.99B | Nov 14, 2025 | ▲ 2.96M |
ABRDN PLC surgical & medical instruments & apparatus | 2.50M | 2.53% | 2.53% | $2.52B | Nov 7, 2025 | NEW |
GEODE CAPITAL MANAGEMENT, LLC surgical & medical instruments & apparatus | 1.67M | 1.69% | 1.69% | $1.69B | Nov 12, 2025 | ▲ 96.8K |
ALYESKA INVESTMENT GROUP, L.P. surgical & medical instruments & apparatus | 1.38M | 1.40% | 1.40% | $1.40B | Nov 17, 2025 | ▲ 644.8K |
PERKINS CAPITAL MANAGEMENT INC surgical & medical instruments & apparatus | 1.13M | 1.14% | 1.14% | $1.14B | Oct 31, 2025 | NEW |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2025 vs prior quarter
Q3 2025
21
Increased
+7.30M shares10
New Positions
first time holders7
Decreased
−604.9K shares0
Sold Out
fully exitedNet shares change (top 50)
+6.69M
+7.30M / −604.9K
Net new holders
+24
10 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
LUCD insider trading · insider activity
Source: SEC Form 4
Insiders have been net buyers of shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
1
Buy transactions
0
Sell transactions
0.00
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
Matheis Dennis director | May 20, 2026 | Purchase | 245,000 | $1.00 | $245.3K | 1.03M | Form 4 ↗ |
Aklog Lishan Chief Executive Officer | Feb 20, 2026 | Award | 2,170,000 | — | — | 3.64M | Form 4 ↗ |
Matheis Dennis director | Feb 20, 2026 | Award | 123,000 | — | — | 788.4K | Form 4 ↗ |
White Debra director | Feb 20, 2026 | Award | 123,000 | — | — | 235.8K | Form 4 ↗ |
Sparks Ronald M director | Feb 20, 2026 | Award | 123,000 | — | — | 320.5K | Form 4 ↗ |
SOKOLOV JACQUE J director | Feb 20, 2026 | Award | 123,000 | — | — | 320.5K | Form 4 ↗ |
PALUMBO JOHN R director | Feb 20, 2026 | Award | 123,000 | — | — | 338.0K | Form 4 ↗ |
Lapidus Stanley director | Feb 20, 2026 | Award | 123,000 | — | — | 337.4K | Form 4 ↗ |
Cox James L director | Feb 20, 2026 | Award | 123,000 | — | — | 405.1K | Form 4 ↗ |
MCGRATH DENNIS M Chief Financial Officer | Feb 20, 2026 | Award | 470,000 | — | — | 1.81M | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
Lucid Diagnostics Inc. (LUCD) is primarily owned by institutional investors, who hold approximately 34.4% of total shares outstanding. Company insiders own approximately 62.88%, while retail and public investors account for the remaining 2.74%.
The largest institutional shareholder of Lucid Diagnostics Inc. is VANGUARD GROUP INC, holding approximately 4.52 million shares — equal to 4.57% of outstanding shares — as of September 30, 2025.
A total of 86 institutional investors currently hold LUCD stock, with a combined institutional value of approximately $35,524,169 as of the most recent 13F filing period.
Frequently asked questions
LUCD ownershipLucid Diagnostics Inc. (LUCD) is primarily owned by institutional investors, who hold approximately 34.4% of shares. The largest shareholder is VANGUARD GROUP INC with a 4.57% stake. Company insiders hold 62.88%. Data sourced from SEC Form 13F as of September 30, 2025.