{
 "as_of": "2026-11-08",
 "cmr": "us-cm-kg/NASDAQ/LUCD",
 "fence": "The page is the record's research on the issuer — no analyst, no rating, no view.",
 "markdown": "The page is the record's research on the issuer — no analyst, no rating, no view.\n\n# Lucid Diagnostics Inc. (NASDAQ: LUCD) — research page\n\nAs of 2026-11-08 · us-cm-kg · record version 1\n\n## Identity and listing\n\nThe issuer is Lucid Diagnostics Inc., listed on NASDAQ under ticker LUCD, with ISIN US54948X1090. The LEI is not on the record. The security type is Corporate, the sector is 3841 Surgical & Medical Instruments & Apparatus, and the jurisdiction is United States, Delaware. The segment is not on the record. The listing status is listed, not halted.\n\n## The disclosure read\n\nThe record holds 41 filings in the window 2025-11-08 to 2026-11-08, across 21 filing days. The median gap between filing days is 9.0 days. The latest filing is dated 2026-10-22, 17 days before the record date, and its type is ad_hoc. The NASDAQ median gap is 6.0 days, the sector median gap is 6 days, the NASDAQ median latency is 5.0 days, and the sector median latency is 4 days.\n\n## Auditor\n\nThe auditor of record is Marcum LLP, located in New York, NY. The record holds no auditor changes.\n\n## Events and halts\n\nThe record holds no listing, delisting or name change lines. The domicile change is not on the record, and the segment move is not on the record. The halt flag is listed, not halted.\n\n## Orderability\n\nThe outcome is not determinable. The chapter's orderability section carries no client categories, so the outcome cannot name its client category. The rule version is acm-68000/us/reasonable-basis-suitability-finra-rule-2111/r1, and the chapter is as of 2026-11-04.\n\n## Coverage\n\nNo research houses were found on the issuer's investor-relations pages read.\n\n## Open research\n\nNo openly published research notes were found on the record.\n\n## Licensed\n\nLicensed research: none loaded. A licensed row is served only to an agent whose firm holds that licence (licensor, entitlement). No licensed row is loaded.\n\n## As-of depth\n\nThe record holds sealed years 2021, 2022, 2023, 2024, 2025 and 2026 for the issuer. The market's earliest sealed date is 2021-01-04, and the live record began on 2026-09-12.\n\n## Sources\n\n8 source pages are named on this page; every value above carries its own source page and read date in the numbers.\n\n- https://www.sec.gov/files/company_tickers_exchange.json (identity.exchange)\n- https://www.sec.gov/data-research/sec-markets-data/fails-deliver-data (identity.isin)\n- https://data.sec.gov/submissions/CIK0001799011.json (identity.jurisdiction)\n- https://mcp.us-cm-kg.ai/events/NASDAQ/LUCD (the disclosure lines)\n- https://www.nasdaqtrader.com/rss.aspx?feed=tradehalts (the halt flag)\n- https://www.sec.gov/Archives/edgar/data/1799011/000143774926009805/lucd20251231_10k.htm (the auditor)\n- https://mcp.us-cm-kg.ai/book/aio.json (the orderability chapter)\n- https://mcp.us-cm-kg.ai/record/NASDAQ/LUCD (the record)\n",
 "market": "US",
 "node": "us-cm-kg",
 "numbers": {
  "as_of_depth": {
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    "2022",
    "2023",
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   ],
   "live_record_began": "2026-09-12",
   "node_history_from": "2021-01-04",
   "node_years_sealed": [
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    "2022",
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   "sealed": true
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  "auditor": {
   "auditor": {
    "read_by": "EDGAR 10-K cover page iXBRL tag (dei:AuditorName, dei:AuditorLocation, dei:AuditorFirmId, dei:DocumentPeriodEndDate)",
    "read_date": "2026-11-08",
    "read_date_basis": "the record version as_of",
    "source": "https://www.sec.gov/Archives/edgar/data/1799011/000143774926009805/lucd20251231_10k.htm",
    "state": "sourced",
    "value": "Marcum LLP"
   },
   "auditor_firm_id": {
    "read_by": "EDGAR 10-K cover page iXBRL tag (dei:AuditorName, dei:AuditorLocation, dei:AuditorFirmId, dei:DocumentPeriodEndDate)",
    "read_date": "2026-11-08",
    "read_date_basis": "the record version as_of",
    "source": "https://www.sec.gov/Archives/edgar/data/1799011/000143774926009805/lucd20251231_10k.htm",
    "state": "sourced",
    "value": "199"
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   "auditor_location": {
    "read_by": "EDGAR 10-K cover page iXBRL tag (dei:AuditorName, dei:AuditorLocation, dei:AuditorFirmId, dei:DocumentPeriodEndDate)",
    "read_date": "2026-11-08",
    "read_date_basis": "the record version as_of",
    "source": "https://www.sec.gov/Archives/edgar/data/1799011/000143774926009805/lucd20251231_10k.htm",
    "state": "sourced",
    "value": "New York, NY"
   },
   "changes": []
  },
  "cmr": "us-cm-kg/NASDAQ/LUCD",
  "coverage": {
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   "houses": [],
   "pages_checked": [],
   "read_by": "Perplexity sonar (search) · page read by this rail",
   "read_date": "2026-11-11",
   "since": null,
   "state": "none_found"
  },
  "disclosure": {
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     "issuers": 4359,
     "median_cadence_gap_days": 6,
     "median_filings": 52,
     "median_latency_days": 5,
     "name": "NASDAQ"
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    "sector": {
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     "median_cadence_gap_days": 6,
     "median_filings": 64,
     "median_latency_days": 4,
     "name": "3841 Surgical & Medical Instruments & Apparatus"
    }
   },
   "by_type": {
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    "agm_egm": 4,
    "corporate_news": 3,
    "directors_dealings": 14,
    "halt_suspension": 1,
    "prospectus": 4,
    "regulatory_filing": 6,
    "results": 8
   },
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   "filing_days": 21,
   "filings": 41,
   "latency_days": 17,
   "latest": [
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     "category": "8-K",
     "date": "2026-10-22",
     "source": "https://www.sec.gov/Archives/edgar/data/1799011/000149315226048114/form8-k.htm",
     "title": "8-K — 8-K (items 3.02,3.03,5.03,9.01)",
     "type": "ad_hoc"
    },
    {
     "category": "8-K",
     "date": "2026-10-16",
     "source": "https://www.sec.gov/Archives/edgar/data/1799011/000149315226047404/form8-k.htm",
     "title": "8-K — 8-K (items 3.01,9.01)",
     "type": "halt_suspension"
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    {
     "category": "8-K",
     "date": "2026-09-22",
     "source": "https://www.sec.gov/Archives/edgar/data/1799011/000149315226043659/form8-k.htm",
     "title": "8-K — 8-K (items 7.01,9.01)",
     "type": "corporate_news"
    },
    {
     "category": "8-K",
     "date": "2026-08-13",
     "source": "https://www.sec.gov/Archives/edgar/data/1799011/000149315226037596/form8-k.htm",
     "title": "8-K — 8-K (items 2.02,7.01,9.01)",
     "type": "results"
    },
    {
     "category": "10-Q",
     "date": "2026-08-12",
     "source": "https://www.sec.gov/Archives/edgar/data/1799011/000143774926027335/lucd20260630_10q.htm",
     "title": "10-Q — FORM 10-Q",
     "type": "results"
    }
   ],
   "latest_filing_date": "2026-10-22",
   "read": "the node's event lines (list_events_since), as get_filings serves them",
   "source": "https://mcp.us-cm-kg.ai/events/NASDAQ/LUCD",
   "window": {
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    "to": "2026-11-08"
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    "read_date": "2026-11-08",
    "read_date_basis": "the record version as_of",
    "source": "https://www.sec.gov/files/company_tickers_exchange.json",
    "state": "sourced",
    "value": "NASDAQ"
   },
   "isin": {
    "read_by": "SEC Fails-to-Deliver data (CUSIP for the symbol) · ISIN = US + CUSIP + ISO 6166 check digit",
    "read_date": "2026-10-14",
    "read_date_basis": "last_seen",
    "source": "https://www.sec.gov/data-research/sec-markets-data/fails-deliver-data",
    "state": "sourced",
    "value": "US54948X1090"
   },
   "jurisdiction": {
    "read_by": "EDGAR submissions API (issuer header as filed) (stateOfIncorporation)",
    "read_date": "2026-11-08",
    "read_date_basis": "the record version as_of",
    "source": "https://data.sec.gov/submissions/CIK0001799011.json",
    "state": "sourced",
    "value": "United States — Delaware"
   },
   "lei": {
    "market": "US",
    "reason": "no GLEIF record with the exact legal name in jurisdiction US-DE",
    "state": "not_on_record"
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   "name": {
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    "read_date": "2026-11-08",
    "read_date_basis": "the record version as_of",
    "source": "https://data.sec.gov/submissions/CIK0001799011.json",
    "state": "sourced",
    "value": "Lucid Diagnostics Inc."
   },
   "sector": {
    "read_by": "EDGAR submissions API (issuer header as filed) (SIC code as assigned by the SEC)",
    "read_date": "2026-11-08",
    "read_date_basis": "the record version as_of",
    "source": "https://data.sec.gov/submissions/CIK0001799011.json",
    "state": "sourced",
    "value": "3841 Surgical & Medical Instruments & Apparatus"
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   "security_type": {
    "read_by": "EDGAR submissions API (issuer header as filed)",
    "read_date": "2026-11-08",
    "read_date_basis": "the record version as_of",
    "source": "https://data.sec.gov/submissions/CIK0001799011.json",
    "state": "sourced",
    "value": "Corporate"
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   "segment": {
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   "ticker": {
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    "read_date": "2026-11-08",
    "read_date_basis": "the record version as_of",
    "source": "https://www.sec.gov/files/company_tickers_exchange.json",
    "state": "sourced",
    "value": "LUCD"
   },
   "website": {
    "market": "US",
    "state": "not_on_record"
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  "licensed": {
   "columns": [
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    "entitlement",
    "title",
    "date",
    "source"
   ],
   "rows": [],
   "rule": "A licensed row is served only to an agent whose firm holds that licence (licensor, entitlement). No licensed row is loaded."
  },
  "lifecycle": {
   "delisting": [],
   "domicile_change": {
    "market": "US",
    "reason": "EDGAR states no dated change of state of incorporation on a filing line",
    "state": "not_on_record"
   },
   "listing": [],
   "name_change": [],
   "segment_move": {
    "market": "US",
    "reason": "the exchanges' tier transfers are not EDGAR filings",
    "state": "not_on_record"
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  "node": "us-cm-kg",
  "numbers_hash": "sha256:859776e5603d151b02c7b2a051a7d7deb2e6a7a99e5641882ce75dc5e8f3b275",
  "open_research": {
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   "rows": [],
   "state": "none_found"
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  "orderability": {
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   "client_categories": [],
   "determinable": false,
   "read": {
    "chapter": "https://mcp.us-cm-kg.ai/book/aio.json",
    "door": "https://mcp.us-cm-kg.ai/mcp",
    "tool": "get_orderability"
   },
   "reason": "the chapter's orderability section carries no client_categories: the outcome cannot name its client category",
   "rule_version": "acm-68000/us/reasonable-basis-suitability-finra-rule-2111/r1",
   "section": "us.aio.v8"
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  "record": {
   "as_of": "2026-11-08",
   "url": "https://mcp.us-cm-kg.ai/record/NASDAQ/LUCD",
   "version": 1
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  "schema": "research-numbers v0.1 (USR-01, 2026-11-11)",
  "status": {
   "read_date": "2026-11-08",
   "source": "https://www.nasdaqtrader.com/rss.aspx?feed=tradehalts",
   "value": "listed, not halted"
  }
 },
 "numbers_hash": "sha256:859776e5603d151b02c7b2a051a7d7deb2e6a7a99e5641882ce75dc5e8f3b275",
 "path": "/us/NASDAQ/LUCD",
 "schema": "research-page v0.1 (USR-02, 2026-11-11)",
 "sections": [
  {
   "id": "identity",
   "text": "The issuer is Lucid Diagnostics Inc., listed on NASDAQ under ticker LUCD, with ISIN US54948X1090. The LEI is not on the record. The security type is Corporate, the sector is 3841 Surgical & Medical Instruments & Apparatus, and the jurisdiction is United States, Delaware. The segment is not on the record. The listing status is listed, not halted.",
   "title": "Identity and listing"
  },
  {
   "id": "disclosure",
   "text": "The record holds 41 filings in the window 2025-11-08 to 2026-11-08, across 21 filing days. The median gap between filing days is 9.0 days. The latest filing is dated 2026-10-22, 17 days before the record date, and its type is ad_hoc. The NASDAQ median gap is 6.0 days, the sector median gap is 6 days, the NASDAQ median latency is 5.0 days, and the sector median latency is 4 days.",
   "title": "The disclosure read"
  },
  {
   "id": "auditor",
   "text": "The auditor of record is Marcum LLP, located in New York, NY. The record holds no auditor changes.",
   "title": "Auditor"
  },
  {
   "id": "events",
   "text": "The record holds no listing, delisting or name change lines. The domicile change is not on the record, and the segment move is not on the record. The halt flag is listed, not halted.",
   "title": "Events and halts"
  },
  {
   "id": "orderability",
   "text": "The outcome is not determinable. The chapter's orderability section carries no client categories, so the outcome cannot name its client category. The rule version is acm-68000/us/reasonable-basis-suitability-finra-rule-2111/r1, and the chapter is as of 2026-11-04.",
   "title": "Orderability"
  },
  {
   "id": "coverage",
   "text": "No research houses were found on the issuer's investor-relations pages read.",
   "title": "Coverage"
  },
  {
   "id": "open_research",
   "text": "No openly published research notes were found on the record.",
   "title": "Open research"
  },
  {
   "id": "licensed",
   "text": "Licensed research: none loaded. A licensed row is served only to an agent whose firm holds that licence (licensor, entitlement). No licensed row is loaded.",
   "title": "Licensed"
  },
  {
   "id": "depth",
   "text": "The record holds sealed years 2021, 2022, 2023, 2024, 2025 and 2026 for the issuer. The market's earliest sealed date is 2021-01-04, and the live record began on 2026-09-12.",
   "title": "As-of depth"
  },
  {
   "id": "sources",
   "text": "8 source pages are named on this page; every value above carries its own source page and read date in the numbers.",
   "title": "Sources"
  }
 ],
 "sources": [
  {
   "for": "identity.exchange",
   "source": "https://www.sec.gov/files/company_tickers_exchange.json"
  },
  {
   "for": "identity.isin",
   "source": "https://www.sec.gov/data-research/sec-markets-data/fails-deliver-data"
  },
  {
   "for": "identity.jurisdiction",
   "source": "https://data.sec.gov/submissions/CIK0001799011.json"
  },
  {
   "for": "the disclosure lines",
   "source": "https://mcp.us-cm-kg.ai/events/NASDAQ/LUCD"
  },
  {
   "for": "the halt flag",
   "source": "https://www.nasdaqtrader.com/rss.aspx?feed=tradehalts"
  },
  {
   "for": "the auditor",
   "source": "https://www.sec.gov/Archives/edgar/data/1799011/000143774926009805/lucd20251231_10k.htm"
  },
  {
   "for": "the orderability chapter",
   "source": "https://mcp.us-cm-kg.ai/book/aio.json"
  },
  {
   "for": "the record",
   "source": "https://mcp.us-cm-kg.ai/record/NASDAQ/LUCD"
  }
 ],
 "title": "Lucid Diagnostics Inc. (LUCD) — research page",
 "writer": {
  "by": "Claude through the platform account, Haiku class; one pass; checked against the numbers",
  "engine": "claude-haiku-5-5"
 }
}