{
 "as_of": "2026-11-08",
 "cmr": "us-cm-kg/NASDAQ/NBBK",
 "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# NB Bancorp, Inc. (NASDAQ: NBBK) — research page\n\nAs of 2026-11-08 · us-cm-kg · record version 1\n\n## Identity and listing\n\nThe issuer is NB Bancorp, Inc., listed on NASDAQ under the ticker NBBK, with ISIN US63945M1071. The LEI is not on the record. The security type is Corporate, the sector is 6036 Savings Institutions, Not Federally Chartered, and the segment and jurisdiction are not on the record. The issuer is listed and not halted.\n\n## The disclosure read\n\nThe record holds 79 filings across 37 filing days in the twelve months to 2026-11-08. The median gap between filing days is 5.5 days, against a NASDAQ median of 6.0 days and a sector median of 6.5 days. The median latency from filing to record date is 2 days, against a NASDAQ median of 5.0 days and a sector median of 2.0 days. The latest filing is dated 2026-11-06 and is of type corporate_news.\n\n## Auditor\n\nThe auditor is not on the record, because the latest annual report cover carries no auditor name tag. The auditor location is not on the record. The record holds no auditor changes.\n\n## Events and halts\n\nThe record holds no listing, delisting, name change, or segment move entries. The domicile change is not on the record. The issuer is listed and not halted.\n\n## Orderability\n\nThe outcome is not determinable under rule version acm-68000/us/reasonable-basis-suitability-finra-rule-2111/r1, because the chapter's orderability section names no client categories. 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 sealed years holding the issuer are 2023, 2024, 2025 and 2026. The market's earliest sealed date is 2021-01-04, and the live record began on 2026-09-12.\n\n## Sources\n\n7 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/CIK0001979330.json (identity.name)\n- https://mcp.us-cm-kg.ai/events/NASDAQ/NBBK (the disclosure lines)\n- https://www.nasdaqtrader.com/rss.aspx?feed=tradehalts (the halt flag)\n- https://mcp.us-cm-kg.ai/book/aio.json (the orderability chapter)\n- https://mcp.us-cm-kg.ai/record/NASDAQ/NBBK (the record)\n",
 "market": "US",
 "node": "us-cm-kg",
 "numbers": {
  "as_of_depth": {
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    "2024",
    "2025",
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   "live_record_began": "2026-09-12",
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    "2026"
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   "record_version": 1,
   "sealed": true
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  "auditor": {
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    "reason": "no dei:AuditorName tag on the latest annual report cover (foreign private issuers and older filings carry none)",
    "state": "not_on_record"
   },
   "auditor_firm_id": {
    "market": "US",
    "state": "not_on_record"
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    "market": "US",
    "state": "not_on_record"
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  "cmr": "us-cm-kg/NASDAQ/NBBK",
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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"
  },
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   "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": 6.5,
     "median_filings": 56,
     "median_latency_days": 2,
     "name": "6036 Savings Institutions, Not Federally Chartered"
    }
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    "corporate_news": 7,
    "directors_dealings": 50,
    "regulatory_filing": 11,
    "results": 8,
    "takeover": 1
   },
   "cadence_median_gap_days": 5.5,
   "filing_days": 37,
   "filings": 79,
   "latency_days": 2,
   "latest": [
    {
     "category": "8-K",
     "date": "2026-11-06",
     "source": "https://www.sec.gov/Archives/edgar/data/1979330/000110465926123880/nbbk-20261106x8k.htm",
     "title": "8-K — 8-K (items 1.01,2.03,7.01,9.01)",
     "type": "corporate_news"
    },
    {
     "category": "10-Q",
     "date": "2026-11-04",
     "source": "https://www.sec.gov/Archives/edgar/data/1979330/000110465926122645/nbbk-20260930x10q.htm",
     "title": "10-Q — 10-Q",
     "type": "results"
    },
    {
     "category": "8-K",
     "date": "2026-10-15",
     "source": "https://www.sec.gov/Archives/edgar/data/1979330/000110465926116250/nbbk-20261015x8k.htm",
     "title": "8-K — 8-K (items 2.02,7.01,8.01,9.01)",
     "type": "results"
    },
    {
     "category": "4",
     "date": "2026-08-21",
     "source": "https://www.sec.gov/Archives/edgar/data/1979330/000110465926099729/xslF345X06/tm2623740-2_4seq1.xml",
     "title": "4 — OWNERSHIP DOCUMENT",
     "type": "directors_dealings"
    },
    {
     "category": "4",
     "date": "2026-08-21",
     "source": "https://www.sec.gov/Archives/edgar/data/1979330/000110465926099677/xslF345X06/tm2623740-1_4seq1.xml",
     "title": "4 — OWNERSHIP DOCUMENT",
     "type": "directors_dealings"
    }
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   "latest_filing_date": "2026-11-06",
   "read": "the node's event lines (list_events_since), as get_filings serves them",
   "source": "https://mcp.us-cm-kg.ai/events/NASDAQ/NBBK",
   "window": {
    "from": "2025-11-08",
    "to": "2026-11-08"
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   "exchange": {
    "read_by": "EDGAR company_tickers_exchange.json (SEC list of exchange-listed filers)",
    "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": "2026-10-13",
    "read_date_basis": "last_seen",
    "source": "https://www.sec.gov/data-research/sec-markets-data/fails-deliver-data",
    "state": "sourced",
    "value": "US63945M1071"
   },
   "jurisdiction": {
    "market": "US",
    "state": "not_on_record"
   },
   "lei": {
    "market": "US",
    "reason": "no GLEIF record with the exact legal name in jurisdiction US",
    "state": "not_on_record"
   },
   "name": {
    "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/CIK0001979330.json",
    "state": "sourced",
    "value": "NB Bancorp, 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/CIK0001979330.json",
    "state": "sourced",
    "value": "6036 Savings Institutions, Not Federally Chartered"
   },
   "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/CIK0001979330.json",
    "state": "sourced",
    "value": "Corporate"
   },
   "segment": {
    "market": "US",
    "state": "not_on_record"
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   "ticker": {
    "read_by": "EDGAR company_tickers_exchange.json (SEC list of exchange-listed filers)",
    "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": "NBBK"
   },
   "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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  "market": "US",
  "node": "us-cm-kg",
  "numbers_hash": "sha256:607b5e8d65b0b03035eff88c04a5d7488030dc215a459b7b9d540fe8958c6a68",
  "open_research": {
   "read_date": "2026-11-11",
   "rows": [],
   "state": "none_found"
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  "orderability": {
   "chapter_as_of": "2026-11-04",
   "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"
  },
  "record": {
   "as_of": "2026-11-08",
   "url": "https://mcp.us-cm-kg.ai/record/NASDAQ/NBBK",
   "version": 1
  },
  "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": "sha256:607b5e8d65b0b03035eff88c04a5d7488030dc215a459b7b9d540fe8958c6a68",
 "path": "/us/NASDAQ/NBBK",
 "schema": "research-page v0.1 (USR-02, 2026-11-11)",
 "sections": [
  {
   "id": "identity",
   "text": "The issuer is NB Bancorp, Inc., listed on NASDAQ under the ticker NBBK, with ISIN US63945M1071. The LEI is not on the record. The security type is Corporate, the sector is 6036 Savings Institutions, Not Federally Chartered, and the segment and jurisdiction are not on the record. The issuer is listed and not halted.",
   "title": "Identity and listing"
  },
  {
   "id": "disclosure",
   "text": "The record holds 79 filings across 37 filing days in the twelve months to 2026-11-08. The median gap between filing days is 5.5 days, against a NASDAQ median of 6.0 days and a sector median of 6.5 days. The median latency from filing to record date is 2 days, against a NASDAQ median of 5.0 days and a sector median of 2.0 days. The latest filing is dated 2026-11-06 and is of type corporate_news.",
   "title": "The disclosure read"
  },
  {
   "id": "auditor",
   "text": "The auditor is not on the record, because the latest annual report cover carries no auditor name tag. The auditor location is not on the record. The record holds no auditor changes.",
   "title": "Auditor"
  },
  {
   "id": "events",
   "text": "The record holds no listing, delisting, name change, or segment move entries. The domicile change is not on the record. The issuer is listed and not halted.",
   "title": "Events and halts"
  },
  {
   "id": "orderability",
   "text": "The outcome is not determinable under rule version acm-68000/us/reasonable-basis-suitability-finra-rule-2111/r1, because the chapter's orderability section names no client categories. 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 sealed years holding the issuer are 2023, 2024, 2025 and 2026. 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": "7 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.name",
   "source": "https://data.sec.gov/submissions/CIK0001979330.json"
  },
  {
   "for": "the disclosure lines",
   "source": "https://mcp.us-cm-kg.ai/events/NASDAQ/NBBK"
  },
  {
   "for": "the halt flag",
   "source": "https://www.nasdaqtrader.com/rss.aspx?feed=tradehalts"
  },
  {
   "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/NBBK"
  }
 ],
 "title": "NB Bancorp, Inc. (NBBK) — research page",
 "writer": {
  "by": "Claude through the platform account, Haiku class; one pass; checked against the numbers",
  "engine": "claude-haiku-5-5"
 }
}