{
 "as_of": "2026-11-08",
 "cmr": "us-cm-kg/NASDAQ/CSTL",
 "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# CASTLE BIOSCIENCES INC (NASDAQ: CSTL) — research page\n\nAs of 2026-11-08 · us-cm-kg · record version 1\n\n## Identity and listing\n\nCASTLE BIOSCIENCES INC is listed on NASDAQ under the ticker CSTL, with ISIN US14843C1053 and LEI 2549007M2Q4HLR1XD252. Its security type is Corporate, its segment is not on the record, its sector is 8071 Services-Medical Laboratories, and its jurisdiction is United States, Delaware. Its listing status is listed, not halted.\n\n## The disclosure read\n\nThe record holds 143 filings on 87 filing days in the window 2025-11-08 to 2026-11-08. Of these, 89 are directors' dealings, 42 are regulatory filings, 9 are results and 3 are AGM/EGM filings. The median gap between filing days is 3.0 days. The latest filing is a results filing dated 2026-11-05, 3 days before the record date of 2026-11-08. The NASDAQ median is 52 filings, a median cadence gap of 6.0 days and a median latency of 5.0 days across 4359 issuers. The 8071 Services-Medical Laboratories sector median is 79 filings, a median cadence gap of 5.5 days and a median latency of 3 days across 29 issuers.\n\n## Auditor\n\nThe auditor of record is KPMG LLP, located in Houston, TX. The record holds no auditor changes.\n\n## Events and halts\n\nThe record holds listing lines dated 2026-08-14 and 2026-08-17. It holds no delisting, name change or domicile change entries, and the domicile change field is not on the record. The segment move field is not on the record. The halt flag shows listed, not halted.\n\n## Orderability\n\nThe orderability 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\nThe issuer's investor-relations page names 10 research houses: Baird, BTIG, Canaccord, Guggenheim, KeyBanc, Mizuho Securities, Roth Capital Partners, Stephens, Lake Street and Leerink Partners.\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 this issuer. The market's earliest sealed date is 2021-01-04, and the live record began on 2026-09-12.\n\n## Sources\n\n10 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/CIK0001447362.json (identity.jurisdiction)\n- https://api.gleif.org/api/v1/lei-records/2549007M2Q4HLR1XD252 (identity.lei)\n- https://mcp.us-cm-kg.ai/events/NASDAQ/CSTL (the disclosure lines)\n- https://www.nasdaqtrader.com/rss.aspx?feed=tradehalts (the halt flag)\n- https://www.sec.gov/Archives/edgar/data/1447362/000162828026012272/cstl-20251231.htm (the auditor)\n- https://mcp.us-cm-kg.ai/book/aio.json (the orderability chapter)\n- https://ir.castlebiosciences.com/stock-data/analyst-coverage (coverage)\n- https://mcp.us-cm-kg.ai/record/NASDAQ/CSTL (the record)\n",
 "market": "US",
 "node": "us-cm-kg",
 "numbers": {
  "as_of_depth": {
   "issuer_years_sealed": [
    "2021",
    "2022",
    "2023",
    "2024",
    "2025",
    "2026"
   ],
   "live_record_began": "2026-09-12",
   "node_history_from": "2021-01-04",
   "node_years_sealed": [
    "2021",
    "2022",
    "2023",
    "2024",
    "2025",
    "2026"
   ],
   "record_version": 1,
   "sealed": true
  },
  "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/1447362/000162828026012272/cstl-20251231.htm",
    "state": "sourced",
    "value": "KPMG 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/1447362/000162828026012272/cstl-20251231.htm",
    "state": "sourced",
    "value": "185"
   },
   "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/1447362/000162828026012272/cstl-20251231.htm",
    "state": "sourced",
    "value": "Houston, TX"
   },
   "changes": []
  },
  "cmr": "us-cm-kg/NASDAQ/CSTL",
  "coverage": {
   "count": 10,
   "houses": [
    {
     "analyst": "Robert Bamberger",
     "house": "Baird",
     "read_by": "issuer IR page, fetched by this rail; each house name read on the page",
     "read_date": "2026-11-11",
     "source": "https://ir.castlebiosciences.com/stock-data/analyst-coverage",
     "state": "sourced"
    },
    {
     "analyst": "Mark Massaro",
     "house": "BTIG",
     "read_by": "issuer IR page, fetched by this rail; each house name read on the page",
     "read_date": "2026-11-11",
     "source": "https://ir.castlebiosciences.com/stock-data/analyst-coverage",
     "state": "sourced"
    },
    {
     "analyst": "Kyle Mikson",
     "house": "Canaccord",
     "read_by": "issuer IR page, fetched by this rail; each house name read on the page",
     "read_date": "2026-11-11",
     "source": "https://ir.castlebiosciences.com/stock-data/analyst-coverage",
     "state": "sourced"
    },
    {
     "analyst": "Subbu Nambi",
     "house": "Guggenheim",
     "read_by": "issuer IR page, fetched by this rail; each house name read on the page",
     "read_date": "2026-11-11",
     "source": "https://ir.castlebiosciences.com/stock-data/analyst-coverage",
     "state": "sourced"
    },
    {
     "analyst": "Paul Knight",
     "house": "KeyBanc",
     "read_by": "issuer IR page, fetched by this rail; each house name read on the page",
     "read_date": "2026-11-11",
     "source": "https://ir.castlebiosciences.com/stock-data/analyst-coverage",
     "state": "sourced"
    },
    {
     "analyst": "Bradley Bowers",
     "house": "Mizuho Securities",
     "read_by": "issuer IR page, fetched by this rail; each house name read on the page",
     "read_date": "2026-11-11",
     "source": "https://ir.castlebiosciences.com/stock-data/analyst-coverage",
     "state": "sourced"
    },
    {
     "analyst": "Max Masucci",
     "house": "Roth Capital Partners",
     "read_by": "issuer IR page, fetched by this rail; each house name read on the page",
     "read_date": "2026-11-11",
     "source": "https://ir.castlebiosciences.com/stock-data/analyst-coverage",
     "state": "sourced"
    },
    {
     "analyst": "Mason Carrico",
     "house": "Stephens",
     "read_by": "issuer IR page, fetched by this rail; each house name read on the page",
     "read_date": "2026-11-11",
     "source": "https://ir.castlebiosciences.com/stock-data/analyst-coverage",
     "state": "sourced"
    },
    {
     "analyst": "Thomas Flaten",
     "house": "Lake Street",
     "read_by": "issuer IR page, fetched by this rail; each house name read on the page",
     "read_date": "2026-11-11",
     "source": "https://ir.castlebiosciences.com/stock-data/analyst-coverage",
     "state": "sourced"
    },
    {
     "analyst": "Puneet Souda",
     "house": "Leerink Partners",
     "read_by": "issuer IR page, fetched by this rail; each house name read on the page",
     "read_date": "2026-11-11",
     "source": "https://ir.castlebiosciences.com/stock-data/analyst-coverage",
     "state": "sourced"
    }
   ],
   "pages_checked": [
    {
     "page": "https://ir.castlebiosciences.com/stock-data/analyst-coverage",
     "result": "read: 10 of 20 named houses found on the page"
    }
   ],
   "read_by": "Perplexity sonar (search) · page read by this rail",
   "read_date": "2026-11-11",
   "since": "not stated on the page read",
   "state": "found"
  },
  "disclosure": {
   "against": {
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     "issuers": 4359,
     "median_cadence_gap_days": 6,
     "median_filings": 52,
     "median_latency_days": 5,
     "name": "NASDAQ"
    },
    "sector": {
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     "median_cadence_gap_days": 5.5,
     "median_filings": 79,
     "median_latency_days": 3,
     "name": "8071 Services-Medical Laboratories"
    }
   },
   "by_type": {
    "agm_egm": 3,
    "directors_dealings": 89,
    "regulatory_filing": 42,
    "results": 9
   },
   "cadence_median_gap_days": 3,
   "filing_days": 87,
   "filings": 143,
   "latency_days": 3,
   "latest": [
    {
     "category": "10-Q",
     "date": "2026-11-05",
     "source": "https://www.sec.gov/Archives/edgar/data/1447362/000162828026071038/cstl-20260930.htm",
     "title": "10-Q — 10-Q",
     "type": "results"
    },
    {
     "category": "8-K",
     "date": "2026-11-05",
     "source": "https://www.sec.gov/Archives/edgar/data/1447362/000162828026071030/cstl-20261105.htm",
     "title": "8-K — 8-K (items 2.02,7.01,9.01)",
     "type": "results"
    },
    {
     "category": "4",
     "date": "2026-11-04",
     "source": "https://www.sec.gov/Archives/edgar/data/1447362/000162828026070131/xslF345X06/wk-form4_1793826430.xml",
     "title": "4 — FORM 4",
     "type": "directors_dealings"
    },
    {
     "category": "144",
     "date": "2026-11-02",
     "source": "https://www.sec.gov/Archives/edgar/data/1447362/000195824426000684/xsl144X01/primary_doc.xml",
     "title": "144",
     "type": "regulatory_filing"
    },
    {
     "category": "4",
     "date": "2026-10-30",
     "source": "https://www.sec.gov/Archives/edgar/data/1447362/000162828026068566/xslF345X06/wk-form4_1793390764.xml",
     "title": "4 — FORM 4",
     "type": "directors_dealings"
    }
   ],
   "latest_filing_date": "2026-11-05",
   "read": "the node's event lines (list_events_since), as get_filings serves them",
   "source": "https://mcp.us-cm-kg.ai/events/NASDAQ/CSTL",
   "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": "2026-09-18",
    "read_date_basis": "last_seen",
    "source": "https://www.sec.gov/data-research/sec-markets-data/fails-deliver-data",
    "state": "sourced",
    "value": "US14843C1053"
   },
   "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/CIK0001447362.json",
    "state": "sourced",
    "value": "United States — Delaware"
   },
   "lei": {
    "read_by": "GLEIF name-exact (jurisdiction US-DE; GLEIF golden copy 2026-09-12)",
    "read_date": "2026-11-08",
    "read_date_basis": "the record version as_of",
    "source": "https://api.gleif.org/api/v1/lei-records/2549007M2Q4HLR1XD252",
    "state": "filled",
    "value": "2549007M2Q4HLR1XD252"
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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/CIK0001447362.json",
    "state": "sourced",
    "value": "CASTLE BIOSCIENCES 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/CIK0001447362.json",
    "state": "sourced",
    "value": "8071 Services-Medical Laboratories"
   },
   "security_type": {
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    "source": "https://data.sec.gov/submissions/CIK0001447362.json",
    "state": "sourced",
    "value": "Corporate"
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   "segment": {
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    "state": "not_on_record"
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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": "CSTL"
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    "state": "not_on_record"
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   "rows": [],
   "rule": "A licensed row is served only to an agent whose firm holds that licence (licensor, entitlement). No licensed row is loaded."
  },
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   "domicile_change": {
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    "reason": "EDGAR states no dated change of state of incorporation on a filing line",
    "state": "not_on_record"
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   "listing": [
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     "source": "https://www.sec.gov/Archives/edgar/data/1447362/000162828026056924/a8-axnasdaqtexaslistingxau.htm",
     "title": "8-A12B — 8-A12B"
    },
    {
     "date": "2026-08-17",
     "source": "https://www.sec.gov/Archives/edgar/data/1447362/000087679626000017/8A_CERT_CSTL_0001447362.pdf",
     "title": "CERT"
    }
   ],
   "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": "sha256:8f8c16aff53c0febe74f7cad9e2fa47aa4817a115e4739489c056a474e6963f9",
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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": {
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   "url": "https://mcp.us-cm-kg.ai/record/NASDAQ/CSTL",
   "version": 1
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  "status": {
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   "source": "https://www.nasdaqtrader.com/rss.aspx?feed=tradehalts",
   "value": "listed, not halted"
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 },
 "numbers_hash": "sha256:8f8c16aff53c0febe74f7cad9e2fa47aa4817a115e4739489c056a474e6963f9",
 "path": "/us/NASDAQ/CSTL",
 "schema": "research-page v0.1 (USR-02, 2026-11-11)",
 "sections": [
  {
   "id": "identity",
   "text": "CASTLE BIOSCIENCES INC is listed on NASDAQ under the ticker CSTL, with ISIN US14843C1053 and LEI 2549007M2Q4HLR1XD252. Its security type is Corporate, its segment is not on the record, its sector is 8071 Services-Medical Laboratories, and its jurisdiction is United States, Delaware. Its listing status is listed, not halted.",
   "title": "Identity and listing"
  },
  {
   "id": "disclosure",
   "text": "The record holds 143 filings on 87 filing days in the window 2025-11-08 to 2026-11-08. Of these, 89 are directors' dealings, 42 are regulatory filings, 9 are results and 3 are AGM/EGM filings. The median gap between filing days is 3.0 days. The latest filing is a results filing dated 2026-11-05, 3 days before the record date of 2026-11-08. The NASDAQ median is 52 filings, a median cadence gap of 6.0 days and a median latency of 5.0 days across 4359 issuers. The 8071 Services-Medical Laboratories sector median is 79 filings, a median cadence gap of 5.5 days and a median latency of 3 days across 29 issuers.",
   "title": "The disclosure read"
  },
  {
   "id": "auditor",
   "text": "The auditor of record is KPMG LLP, located in Houston, TX. The record holds no auditor changes.",
   "title": "Auditor"
  },
  {
   "id": "events",
   "text": "The record holds listing lines dated 2026-08-14 and 2026-08-17. It holds no delisting, name change or domicile change entries, and the domicile change field is not on the record. The segment move field is not on the record. The halt flag shows listed, not halted.",
   "title": "Events and halts"
  },
  {
   "id": "orderability",
   "text": "The orderability 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": "The issuer's investor-relations page names 10 research houses: Baird, BTIG, Canaccord, Guggenheim, KeyBanc, Mizuho Securities, Roth Capital Partners, Stephens, Lake Street and Leerink Partners.",
   "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 this 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": "10 source pages are named on this page; every value above carries its own source page and read date in the numbers.",
   "title": "Sources"
  }
 ],
 "sources": [
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   "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/CIK0001447362.json"
  },
  {
   "for": "identity.lei",
   "source": "https://api.gleif.org/api/v1/lei-records/2549007M2Q4HLR1XD252"
  },
  {
   "for": "the disclosure lines",
   "source": "https://mcp.us-cm-kg.ai/events/NASDAQ/CSTL"
  },
  {
   "for": "the halt flag",
   "source": "https://www.nasdaqtrader.com/rss.aspx?feed=tradehalts"
  },
  {
   "for": "the auditor",
   "source": "https://www.sec.gov/Archives/edgar/data/1447362/000162828026012272/cstl-20251231.htm"
  },
  {
   "for": "the orderability chapter",
   "source": "https://mcp.us-cm-kg.ai/book/aio.json"
  },
  {
   "for": "coverage",
   "source": "https://ir.castlebiosciences.com/stock-data/analyst-coverage"
  },
  {
   "for": "the record",
   "source": "https://mcp.us-cm-kg.ai/record/NASDAQ/CSTL"
  }
 ],
 "title": "CASTLE BIOSCIENCES INC (CSTL) — research page",
 "writer": {
  "by": "Claude through the platform account, Haiku class; one pass; checked against the numbers",
  "engine": "claude-haiku-5-5"
 }
}