{
 "as_of": "2026-11-08",
 "cmr": "us-cm-kg/NASDAQ/CRBU",
 "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# Caribou Biosciences, Inc. (NASDAQ: CRBU) — research page\n\nAs of 2026-11-08 · us-cm-kg · record version 1\n\n## Identity and listing\n\nCaribou Biosciences, Inc. is listed on NASDAQ under the ticker CRBU, with ISIN US1420381089. The LEI is not on the record, as no GLEIF record carries the exact legal name in jurisdiction US-DE. The security type is Corporate, the segment is not on the record, the sector is 2836 Biological Products, (No Diagnostic Substances), and the jurisdiction is United States, Delaware. The issuer is listed and not halted.\n\n## The disclosure read\n\nThe record holds 39 filings across 18 filing days in the window 2025-11-08 to 2026-11-08. Of these, 14 are directors' dealings, 10 are results, 7 are regulatory filings, 5 are AGM/EGM filings, 2 are corporate news, and 1 is a director change. The median gap between filing days is 10 days. The latest filing is a results filing dated 2026-11-05, 3 days before the record date of 2026-11-08. The NASDAQ peer median is 52 filings, a cadence gap of 6.0 days, and a latency of 5.0 days across 4,359 issuers. The sector peer median is 65.5 filings, a cadence gap of 5.5 days, and a latency of 4.0 days across 176 issuers.\n\n## Auditor\n\nThe auditor of record is Deloitte & Touche LLP, located in San Francisco, California. The record holds no auditor changes.\n\n## Events and halts\n\nThe record holds no listing, delisting, or name change events. The domicile change is not on the record, as EDGAR states no dated change of state of incorporation on a filing line. The segment move is not on the record, as the exchanges' tier transfers are not EDGAR filings. The halt flag is not set.\n\n## Orderability\n\nThe outcome is not determinable, because the chapter's orderability section carries no client categories and so the outcome cannot name its client category. The rule version is acm-68000/us/reasonable-basis-suitability-finra-rule-2111/r1, with the chapter 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 this issuer. The earliest sealed date for the US market is 2021-01-04. 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/CIK0001619856.json (identity.jurisdiction)\n- https://mcp.us-cm-kg.ai/events/NASDAQ/CRBU (the disclosure lines)\n- https://www.nasdaqtrader.com/rss.aspx?feed=tradehalts (the halt flag)\n- https://www.sec.gov/Archives/edgar/data/1619856/000161985626000008/crbu-20251231.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/CRBU (the record)\n",
 "market": "US",
 "node": "us-cm-kg",
 "numbers": {
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   "live_record_began": "2026-09-12",
   "node_history_from": "2021-01-04",
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   "record_version": 1,
   "sealed": true
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   "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/1619856/000161985626000008/crbu-20251231.htm",
    "state": "sourced",
    "value": "Deloitte & Touche LLP"
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   "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/1619856/000161985626000008/crbu-20251231.htm",
    "state": "sourced",
    "value": "34"
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    "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/1619856/000161985626000008/crbu-20251231.htm",
    "state": "sourced",
    "value": "San Francisco, California"
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  "cmr": "us-cm-kg/NASDAQ/CRBU",
  "coverage": {
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   "houses": [],
   "pages_checked": [],
   "read_by": "Perplexity sonar (search) · page read by this rail",
   "read_date": "2026-11-11",
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   "state": "none_found"
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  "disclosure": {
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     "median_filings": 52,
     "median_latency_days": 5,
     "name": "NASDAQ"
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     "name": "2836 Biological Products, (No Diagnostic Substances)"
    }
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    "regulatory_filing": 7,
    "results": 10
   },
   "cadence_median_gap_days": 10,
   "filing_days": 18,
   "filings": 39,
   "latency_days": 3,
   "latest": [
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     "category": "10-Q",
     "date": "2026-11-05",
     "source": "https://www.sec.gov/Archives/edgar/data/1619856/000161985626000061/crbu-20260930.htm",
     "title": "10-Q — 10-Q",
     "type": "results"
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    {
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     "date": "2026-11-05",
     "source": "https://www.sec.gov/Archives/edgar/data/1619856/000161985626000060/crbu-20261105.htm",
     "title": "8-K — 8-K (items 2.02,9.01)",
     "type": "results"
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    {
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     "date": "2026-10-06",
     "source": "https://www.sec.gov/Archives/edgar/data/1619856/000119312526415559/d235175d8k.htm",
     "title": "8-K — 8-K (items 2.05,5.02,7.01,8.01,9.01)",
     "type": "director_change"
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    {
     "category": "10-Q",
     "date": "2026-08-13",
     "source": "https://www.sec.gov/Archives/edgar/data/1619856/000161985626000055/crbu-20260630.htm",
     "title": "10-Q — 10-Q",
     "type": "results"
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    {
     "category": "8-K",
     "date": "2026-08-13",
     "source": "https://www.sec.gov/Archives/edgar/data/1619856/000161985626000053/crbu-20260813.htm",
     "title": "8-K — 8-K (items 2.02,9.01)",
     "type": "results"
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   "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/CRBU",
   "window": {
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    "to": "2026-11-08"
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    "source": "https://www.sec.gov/files/company_tickers_exchange.json",
    "state": "sourced",
    "value": "NASDAQ"
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   "isin": {
    "read_by": "SEC Fails-to-Deliver data (CUSIP for the symbol) · ISIN = US + CUSIP + ISO 6166 check digit",
    "read_date": "2026-10-08",
    "read_date_basis": "last_seen",
    "source": "https://www.sec.gov/data-research/sec-markets-data/fails-deliver-data",
    "state": "sourced",
    "value": "US1420381089"
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    "read_date_basis": "the record version as_of",
    "source": "https://data.sec.gov/submissions/CIK0001619856.json",
    "state": "sourced",
    "value": "United States — Delaware"
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   "lei": {
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    "reason": "no GLEIF record with the exact legal name in jurisdiction US-DE",
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    "read_date": "2026-11-08",
    "read_date_basis": "the record version as_of",
    "source": "https://data.sec.gov/submissions/CIK0001619856.json",
    "state": "sourced",
    "value": "Caribou 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/CIK0001619856.json",
    "state": "sourced",
    "value": "2836 Biological Products, (No Diagnostic Substances)"
   },
   "security_type": {
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    "read_date_basis": "the record version as_of",
    "source": "https://data.sec.gov/submissions/CIK0001619856.json",
    "state": "sourced",
    "value": "Corporate"
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   "segment": {
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    "state": "not_on_record"
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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": "CRBU"
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   "website": {
    "market": "US",
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  "licensed": {
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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."
  },
  "lifecycle": {
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   "domicile_change": {
    "market": "US",
    "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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    "market": "US",
    "reason": "the exchanges' tier transfers are not EDGAR filings",
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  "node": "us-cm-kg",
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  "orderability": {
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   "client_categories": [],
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   "read": {
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    "door": "https://mcp.us-cm-kg.ai/mcp",
    "tool": "get_orderability"
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   "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/CRBU",
   "version": 1
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  "status": {
   "read_date": "2026-11-08",
   "source": "https://www.nasdaqtrader.com/rss.aspx?feed=tradehalts",
   "value": "listed, not halted"
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 },
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 "path": "/us/NASDAQ/CRBU",
 "schema": "research-page v0.1 (USR-02, 2026-11-11)",
 "sections": [
  {
   "id": "identity",
   "text": "Caribou Biosciences, Inc. is listed on NASDAQ under the ticker CRBU, with ISIN US1420381089. The LEI is not on the record, as no GLEIF record carries the exact legal name in jurisdiction US-DE. The security type is Corporate, the segment is not on the record, the sector is 2836 Biological Products, (No Diagnostic Substances), and the jurisdiction is United States, Delaware. The issuer is listed and not halted.",
   "title": "Identity and listing"
  },
  {
   "id": "disclosure",
   "text": "The record holds 39 filings across 18 filing days in the window 2025-11-08 to 2026-11-08. Of these, 14 are directors' dealings, 10 are results, 7 are regulatory filings, 5 are AGM/EGM filings, 2 are corporate news, and 1 is a director change. The median gap between filing days is 10 days. The latest filing is a results filing dated 2026-11-05, 3 days before the record date of 2026-11-08. The NASDAQ peer median is 52 filings, a cadence gap of 6.0 days, and a latency of 5.0 days across 4,359 issuers. The sector peer median is 65.5 filings, a cadence gap of 5.5 days, and a latency of 4.0 days across 176 issuers.",
   "title": "The disclosure read"
  },
  {
   "id": "auditor",
   "text": "The auditor of record is Deloitte & Touche LLP, located in San Francisco, California. The record holds no auditor changes.",
   "title": "Auditor"
  },
  {
   "id": "events",
   "text": "The record holds no listing, delisting, or name change events. The domicile change is not on the record, as EDGAR states no dated change of state of incorporation on a filing line. The segment move is not on the record, as the exchanges' tier transfers are not EDGAR filings. The halt flag is not set.",
   "title": "Events and halts"
  },
  {
   "id": "orderability",
   "text": "The outcome is not determinable, because the chapter's orderability section carries no client categories and so the outcome cannot name its client category. The rule version is acm-68000/us/reasonable-basis-suitability-finra-rule-2111/r1, with the chapter 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 this issuer. The earliest sealed date for the US market is 2021-01-04. 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",
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  },
  {
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   "source": "https://www.sec.gov/data-research/sec-markets-data/fails-deliver-data"
  },
  {
   "for": "identity.jurisdiction",
   "source": "https://data.sec.gov/submissions/CIK0001619856.json"
  },
  {
   "for": "the disclosure lines",
   "source": "https://mcp.us-cm-kg.ai/events/NASDAQ/CRBU"
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   "source": "https://www.nasdaqtrader.com/rss.aspx?feed=tradehalts"
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  },
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   "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/CRBU"
  }
 ],
 "title": "Caribou Biosciences, Inc. (CRBU) — research page",
 "writer": {
  "by": "Claude through the platform account, Haiku class; one pass; checked against the numbers",
  "engine": "claude-haiku-5-5"
 }
}