{
 "as_of": "2026-11-08",
 "cmr": "us-cm-kg/NASDAQ/AMPH",
 "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# Amphastar Pharmaceuticals, Inc. (NASDAQ: AMPH) — research page\n\nAs of 2026-11-08 · us-cm-kg · record version 1\n\n## Identity and listing\n\nAmphastar Pharmaceuticals, Inc. is listed on NASDAQ under ticker AMPH, with ISIN US03209R1032 and LEI 54930055TH0ZLSAQMJ38. Its security type is Corporate and its sector is 2834 Pharmaceutical Preparations. Its segment and jurisdiction are not on the record. Its listing status is listed, not halted.\n\n## The disclosure read\n\nThe record holds 66 filings across 35 filing days in the window 2025-11-08 to 2026-11-08. The median gap between filing days is 4.5 days, against a NASDAQ median of 6.0 days and a 2834 Pharmaceutical Preparations sector median of 6.0 days. The latest filing is dated 2026-11-06, two days before the record date, and is of type directors_dealings; the NASDAQ median latency is 5.0 days and the sector median latency is 4.0 days.\n\n## Auditor\n\nThe auditor and its location are not on the record, because the latest annual report cover carries no dei:AuditorName tag. The record holds no auditor changes.\n\n## Events and halts\n\nThe record holds no listing, delisting or name change lines. Domicile change is not on the record, and segment move is not on the record. The issuer is listed, not halted.\n\n## Orderability\n\nThe outcome is not determinable, because the chapter's orderability section names no 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 page.\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 issuer is held in sealed years 2021, 2022, 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\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://mapping.gleif.org/api/v2/isin-lei/latest/download (identity.lei)\n- https://data.sec.gov/submissions/CIK0001297184.json (identity.name)\n- https://mcp.us-cm-kg.ai/events/NASDAQ/AMPH (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/AMPH (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": {
    "market": "US",
    "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"
   },
   "auditor_location": {
    "market": "US",
    "state": "not_on_record"
   },
   "changes": []
  },
  "cmr": "us-cm-kg/NASDAQ/AMPH",
  "coverage": {
   "count": 0,
   "houses": [],
   "pages_checked": [
    {
     "page": "https://ir.amphastar.com/stock-information/analyst-coverage",
     "result": "read: 0 of 7 named houses found on the page; the page does not name the issuer"
    }
   ],
   "read_by": "Perplexity sonar (search) · page read by this rail",
   "read_date": "2026-11-11",
   "since": null,
   "state": "none_found"
  },
  "disclosure": {
   "against": {
    "exchange": {
     "issuers": 4359,
     "median_cadence_gap_days": 6,
     "median_filings": 52,
     "median_latency_days": 5,
     "name": "NASDAQ"
    },
    "sector": {
     "issuers": 526,
     "median_cadence_gap_days": 6,
     "median_filings": 63,
     "median_latency_days": 4,
     "name": "2834 Pharmaceutical Preparations"
    }
   },
   "by_type": {
    "agm_egm": 3,
    "corporate_news": 4,
    "director_change": 2,
    "directors_dealings": 34,
    "regulatory_filing": 15,
    "results": 8
   },
   "cadence_median_gap_days": 4.5,
   "filing_days": 35,
   "filings": 66,
   "latency_days": 2,
   "latest": [
    {
     "category": "4",
     "date": "2026-11-06",
     "source": "https://www.sec.gov/Archives/edgar/data/1297184/000126313626000016/xslF345X06/form4-11062026_091102.xml",
     "title": "4",
     "type": "directors_dealings"
    },
    {
     "category": "144",
     "date": "2026-11-05",
     "source": "https://www.sec.gov/Archives/edgar/data/1297184/000196922326001133/xsl144X01/primary_doc.xml",
     "title": "144",
     "type": "regulatory_filing"
    },
    {
     "category": "10-Q",
     "date": "2026-11-05",
     "source": "https://www.sec.gov/Archives/edgar/data/1297184/000129718426000053/amph-20260930x10q.htm",
     "title": "10-Q — 10-Q",
     "type": "results"
    },
    {
     "category": "8-K",
     "date": "2026-11-05",
     "source": "https://www.sec.gov/Archives/edgar/data/1297184/000129718426000051/amph-20261105x8k.htm",
     "title": "8-K — 8-K (items 2.02,9.01)",
     "type": "results"
    },
    {
     "category": "144",
     "date": "2026-11-04",
     "source": "https://www.sec.gov/Archives/edgar/data/1297184/000196922326001127/xsl144X01/primary_doc.xml",
     "title": "144",
     "type": "regulatory_filing"
    }
   ],
   "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/AMPH",
   "window": {
    "from": "2025-11-08",
    "to": "2026-11-08"
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  },
  "identity": {
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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": "2026-09-17",
    "read_date_basis": "last_seen",
    "source": "https://www.sec.gov/data-research/sec-markets-data/fails-deliver-data",
    "state": "sourced",
    "value": "US03209R1032"
   },
   "jurisdiction": {
    "market": "US",
    "state": "not_on_record"
   },
   "lei": {
    "read_by": "GLEIF ISIN-to-LEI mapping file (daily), LEI by exact ISIN",
    "read_date": "2026-11-08",
    "read_date_basis": "the field",
    "source": "https://mapping.gleif.org/api/v2/isin-lei/latest/download (ISIN US03209R1032)",
    "state": "sourced",
    "value": "54930055TH0ZLSAQMJ38"
   },
   "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/CIK0001297184.json",
    "state": "sourced",
    "value": "Amphastar Pharmaceuticals, 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/CIK0001297184.json",
    "state": "sourced",
    "value": "2834 Pharmaceutical Preparations"
   },
   "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/CIK0001297184.json",
    "state": "sourced",
    "value": "Corporate"
   },
   "segment": {
    "market": "US",
    "state": "not_on_record"
   },
   "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": "AMPH"
   },
   "website": {
    "market": "US",
    "state": "not_on_record"
   }
  },
  "licensed": {
   "columns": [
    "licensor",
    "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"
   }
  },
  "market": "US",
  "node": "us-cm-kg",
  "numbers_hash": "sha256:a11d77156648b6c06cb362c741cb66ddcc6251749094cf569f5873b62ac0cfd0",
  "open_research": {
   "read_date": "2026-11-11",
   "rows": [],
   "state": "none_found"
  },
  "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/AMPH",
   "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:a11d77156648b6c06cb362c741cb66ddcc6251749094cf569f5873b62ac0cfd0",
 "path": "/us/NASDAQ/AMPH",
 "schema": "research-page v0.1 (USR-02, 2026-11-11)",
 "sections": [
  {
   "id": "identity",
   "text": "Amphastar Pharmaceuticals, Inc. is listed on NASDAQ under ticker AMPH, with ISIN US03209R1032 and LEI 54930055TH0ZLSAQMJ38. Its security type is Corporate and its sector is 2834 Pharmaceutical Preparations. Its segment and jurisdiction are not on the record. Its listing status is listed, not halted.",
   "title": "Identity and listing"
  },
  {
   "id": "disclosure",
   "text": "The record holds 66 filings across 35 filing days in the window 2025-11-08 to 2026-11-08. The median gap between filing days is 4.5 days, against a NASDAQ median of 6.0 days and a 2834 Pharmaceutical Preparations sector median of 6.0 days. The latest filing is dated 2026-11-06, two days before the record date, and is of type directors_dealings; the NASDAQ median latency is 5.0 days and the sector median latency is 4.0 days.",
   "title": "The disclosure read"
  },
  {
   "id": "auditor",
   "text": "The auditor and its location are not on the record, because the latest annual report cover carries no dei:AuditorName tag. The record holds no auditor changes.",
   "title": "Auditor"
  },
  {
   "id": "events",
   "text": "The record holds no listing, delisting or name change lines. Domicile change is not on the record, and segment move is not on the record. The issuer is listed, not halted.",
   "title": "Events and halts"
  },
  {
   "id": "orderability",
   "text": "The outcome is not determinable, because the chapter's orderability section names no 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 page.",
   "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 issuer is held in sealed years 2021, 2022, 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": "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.lei",
   "source": "https://mapping.gleif.org/api/v2/isin-lei/latest/download"
  },
  {
   "for": "identity.name",
   "source": "https://data.sec.gov/submissions/CIK0001297184.json"
  },
  {
   "for": "the disclosure lines",
   "source": "https://mcp.us-cm-kg.ai/events/NASDAQ/AMPH"
  },
  {
   "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/AMPH"
  }
 ],
 "title": "Amphastar Pharmaceuticals, Inc. (AMPH) — research page",
 "writer": {
  "by": "Claude through the platform account, Haiku class; one pass; checked against the numbers",
  "engine": "claude-haiku-5-5"
 }
}