{
 "as_of": "2026-11-08",
 "cmr": "us-cm-kg/NASDAQ/SION",
 "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# Sionna Therapeutics, Inc. (NASDAQ: SION) — research page\n\nAs of 2026-11-08 · us-cm-kg · record version 1\n\n## Identity and listing\n\nSionna Therapeutics, Inc. is listed on NASDAQ under the ticker SION, with ISIN US8294011080. The LEI is not on the record (no GLEIF record with the exact legal name in jurisdiction US-DE). The security type is Corporate, the sector is 2834 Pharmaceutical Preparations, and the jurisdiction is United States, Delaware. The segment is not on the record. The issuer is listed and not halted.\n\n## The disclosure read\n\nThe record holds 92 filings across 38 filing days in the window 2025-11-08 to 2026-11-08. Of these, 45 are directors' dealings, 35 are regulatory filings, 6 are results, 3 are AGM/EGM filings, 1 is corporate news, 1 is a director change and 1 is a prospectus. The median gap between filing days is 4 days. The latest filing is a regulatory filing dated 2026-09-21, 48 days before the record date. The NASDAQ medians are 52 filings, a cadence gap of 6.0 days and a latency of 5.0 days across 4,359 issuers. The sector medians are 63.0 filings, a cadence gap of 6.0 days and a latency of 4.0 days across 526 issuers.\n\n## Auditor\n\nThe auditor of record is Deloitte & Touche LLP, located in Boston, Massachusetts. 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 (EDGAR states no dated change of state of incorporation on a filing line). The segment move is not on the record (the exchanges' tier transfers are not EDGAR filings). The halt flag reads 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, with the chapter 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.\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 that hold the issuer are 2024, 2025 and 2026. The market's earliest sealed date 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/CIK0002036042.json (identity.jurisdiction)\n- https://mcp.us-cm-kg.ai/events/NASDAQ/SION (the disclosure lines)\n- https://www.nasdaqtrader.com/rss.aspx?feed=tradehalts (the halt flag)\n- https://www.sec.gov/Archives/edgar/data/2036042/000162828026012996/sionna-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/SION (the record)\n",
 "market": "US",
 "node": "us-cm-kg",
 "numbers": {
  "as_of_depth": {
   "issuer_years_sealed": [
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    "2025",
    "2026"
   ],
   "live_record_began": "2026-09-12",
   "node_history_from": "2021-01-04",
   "node_years_sealed": [
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    "2022",
    "2023",
    "2024",
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   "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/2036042/000162828026012996/sionna-20251231.htm",
    "state": "sourced",
    "value": "Deloitte & Touche 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/2036042/000162828026012996/sionna-20251231.htm",
    "state": "sourced",
    "value": "34"
   },
   "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/2036042/000162828026012996/sionna-20251231.htm",
    "state": "sourced",
    "value": "Boston, Massachusetts"
   },
   "changes": []
  },
  "cmr": "us-cm-kg/NASDAQ/SION",
  "coverage": {
   "count": 0,
   "houses": [],
   "pages_checked": [
    {
     "page": "https://investors.sionnatx.com/stock-information/analyst-coverage",
     "result": "not the issuer's own investor-relations page — not read"
    }
   ],
   "read_by": "Perplexity sonar (search) · page read by this rail",
   "read_date": "2026-11-11",
   "since": null,
   "state": "none_found"
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  "disclosure": {
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     "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": 63,
     "median_latency_days": 4,
     "name": "2834 Pharmaceutical Preparations"
    }
   },
   "by_type": {
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    "corporate_news": 1,
    "director_change": 1,
    "directors_dealings": 45,
    "prospectus": 1,
    "regulatory_filing": 35,
    "results": 6
   },
   "cadence_median_gap_days": 4,
   "filing_days": 38,
   "filings": 92,
   "latency_days": 48,
   "latest": [
    {
     "category": "SCHEDULE 13D/A",
     "date": "2026-09-21",
     "source": "https://www.sec.gov/Archives/edgar/data/2036042/000134682426000239/xslSCHEDULE_13D_X02/primary_doc.xml",
     "title": "SCHEDULE 13D/A",
     "type": "regulatory_filing"
    },
    {
     "category": "4",
     "date": "2026-09-21",
     "source": "https://www.sec.gov/Archives/edgar/data/2036042/000123191926001201/xslF345X06/form4-09212026_100937.xml",
     "title": "4",
     "type": "directors_dealings"
    },
    {
     "category": "4",
     "date": "2026-09-18",
     "source": "https://www.sec.gov/Archives/edgar/data/2036042/000206185126000009/xslF345X06/edgardoc.xml",
     "title": "4 — PRIMARY DOCUMENT",
     "type": "directors_dealings"
    },
    {
     "category": "4",
     "date": "2026-09-18",
     "source": "https://www.sec.gov/Archives/edgar/data/2036042/000204643326000005/xslF345X06/edgardoc.xml",
     "title": "4 — PRIMARY DOCUMENT",
     "type": "directors_dealings"
    },
    {
     "category": "4",
     "date": "2026-09-18",
     "source": "https://www.sec.gov/Archives/edgar/data/2036042/000177251826000004/xslF345X06/edgardoc.xml",
     "title": "4 — PRIMARY DOCUMENT",
     "type": "directors_dealings"
    }
   ],
   "latest_filing_date": "2026-09-21",
   "read": "the node's event lines (list_events_since), as get_filings serves them",
   "source": "https://mcp.us-cm-kg.ai/events/NASDAQ/SION",
   "window": {
    "from": "2025-11-08",
    "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": "2026-10-05",
    "read_date_basis": "last_seen",
    "source": "https://www.sec.gov/data-research/sec-markets-data/fails-deliver-data",
    "state": "sourced",
    "value": "US8294011080"
   },
   "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/CIK0002036042.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"
   },
   "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/CIK0002036042.json",
    "state": "sourced",
    "value": "Sionna Therapeutics, 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/CIK0002036042.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/CIK0002036042.json",
    "state": "sourced",
    "value": "Corporate"
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   "segment": {
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    "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": "SION"
   },
   "website": {
    "market": "US",
    "state": "not_on_record"
   }
  },
  "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": "sha256:59194c468f843fe13b417cf3b5343156e91cbc0e3b5db9ed2466757711b26b5f",
  "open_research": {
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   "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/SION",
   "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": "sha256:59194c468f843fe13b417cf3b5343156e91cbc0e3b5db9ed2466757711b26b5f",
 "path": "/us/NASDAQ/SION",
 "schema": "research-page v0.1 (USR-02, 2026-11-11)",
 "sections": [
  {
   "id": "identity",
   "text": "Sionna Therapeutics, Inc. is listed on NASDAQ under the ticker SION, with ISIN US8294011080. The LEI is not on the record (no GLEIF record with the exact legal name in jurisdiction US-DE). The security type is Corporate, the sector is 2834 Pharmaceutical Preparations, and the jurisdiction is United States, Delaware. The segment is not on the record. The issuer is listed and not halted.",
   "title": "Identity and listing"
  },
  {
   "id": "disclosure",
   "text": "The record holds 92 filings across 38 filing days in the window 2025-11-08 to 2026-11-08. Of these, 45 are directors' dealings, 35 are regulatory filings, 6 are results, 3 are AGM/EGM filings, 1 is corporate news, 1 is a director change and 1 is a prospectus. The median gap between filing days is 4 days. The latest filing is a regulatory filing dated 2026-09-21, 48 days before the record date. The NASDAQ medians are 52 filings, a cadence gap of 6.0 days and a latency of 5.0 days across 4,359 issuers. The sector medians are 63.0 filings, a cadence gap of 6.0 days and a latency of 4.0 days across 526 issuers.",
   "title": "The disclosure read"
  },
  {
   "id": "auditor",
   "text": "The auditor of record is Deloitte & Touche LLP, located in Boston, Massachusetts. 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 (EDGAR states no dated change of state of incorporation on a filing line). The segment move is not on the record (the exchanges' tier transfers are not EDGAR filings). The halt flag reads 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, with the chapter 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.",
   "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 that hold the issuer are 2024, 2025 and 2026. The market's earliest sealed date 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",
   "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/CIK0002036042.json"
  },
  {
   "for": "the disclosure lines",
   "source": "https://mcp.us-cm-kg.ai/events/NASDAQ/SION"
  },
  {
   "for": "the halt flag",
   "source": "https://www.nasdaqtrader.com/rss.aspx?feed=tradehalts"
  },
  {
   "for": "the auditor",
   "source": "https://www.sec.gov/Archives/edgar/data/2036042/000162828026012996/sionna-20251231.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/SION"
  }
 ],
 "title": "Sionna Therapeutics, Inc. (SION) — research page",
 "writer": {
  "by": "Claude through the platform account, Haiku class; one pass; checked against the numbers",
  "engine": "claude-haiku-5-5"
 }
}