{ "as_of": "2026-11-06", "cmr": "uk-cm-kg/LSE/COST", "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# COSTAIN GROUP PLC (LSE Main Market: COST) — research page\n\nAs of 2026-11-06 · uk-cm-kg · record version 1\n\n## Identity and listing\n\nThe issuer is COSTAIN GROUP PLC, listed on the LSE Main Market under ticker COST, with ISIN GB00B64NSP76 and LEI 213800PKIJBZ2EDTKC88. The security type is Corporate, the segment is STMM, the sector is Construction and Materials [501010], and the jurisdiction is England and Wales (Companies House jurisdiction field). The listing status is listed, not halted.\n\n## The disclosure read\n\nThe record holds 193 filings in the window 2025-11-06 to 2026-11-06, across 121 filing days. The median gap between filing days is 2.0 days. The latest filing is dated 2026-11-04, is of type ch_capital, and falls 2 days before the record date of 2026-11-06. The LSE Main Market median cadence gap is 4 days across 892 issuers, with a median of 29.0 filings and a median latency of 3 days. The Construction and Materials [501010] sector median cadence gap is 6.0 days across 36 issuers, with a median of 42.5 filings and a median latency of 3.0 days. The filings by type are: agm_record_date 2, ch_accounts_filed 1, ch_capital 63, ch_confirmation_statement 1, ch_resolution 1, corporate_action 40, director_dealing 13, early_warning 46, financial_statement 6, regulatory_announcement 20.\n\n## Auditor\n\nThe auditor of record is PricewaterhouseCoopers LLP. The auditor's location is not on the record. Auditor changes are not on the record, as this register has no lifecycle type map yet (SHELF-01: us and ca first).\n\n## Events and halts\n\nListing, delisting, name change, domicile change and segment move are not on the record, as this register has no lifecycle type map yet (SHELF-01: us and ca first). The halt flag is listed, not halted.\n\n## Orderability\n\nFor the elective professional client category, the signal is ACM-200 and the outcome is determinable. For the eligible counterparty category, the signal is ACM-200 and the outcome is determinable. The rule version is acm-68000/uk/product-governance-fca-prod-sourcebook/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. The count is 0.\n\n## Open research\n\nNo openly published research notes were found. The count is 0.\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 vintage is not sealed. No issuer years are sealed on the record, and the market earliest sealed date is not on the record. The live record began on 2026-09-11. The years 2021, 2022, 2023, 2024, 2025 and 2026 are sealed in the store but not served as of a date, and the as-of door answers not_sealed.\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.londonstockexchange.com/live-markets/market-data-dashboard/price-explorer (identity.exchange)\n- https://api.londonstockexchange.com/api/gw/lse/instruments/alldata/COST (identity.isin)\n- https://find-and-update.company-information.service.gov.uk/company/01393773 (identity.jurisdiction)\n- https://mapping.gleif.org/api/v2/isin-lei/latest/download (identity.lei)\n- https://www.londonstockexchange.com/stock/COST/costain-group-plc/company-page (identity.sector)\n- https://mcp.uk-cm-kg.ai/events/LSE/COST (the disclosure lines)\n- https://marketsecurities.fca.org.uk/officiallist (the halt flag)\n- https://www.costain.com/media/5sthahwm/ara-2025-final_for-web.pdf (the auditor)\n- https://mcp.uk-cm-kg.ai/book/aio.json (the orderability chapter)\n- https://mcp.uk-cm-kg.ai/record/LSE/COST (the record)\n", "market": "UK", "node": "uk-cm-kg", "numbers": { "as_of_depth": { "issuer_years_sealed": [], "live_record_began": "2026-09-11", "node_history_from": null, "node_years_sealed": [], "note": "6 years are sealed in the UK store; their Replay split is not built, so the as-of door answers not_sealed and the record is the live record as of 2026-11-06", "record_version": 1, "sealed": false, "store_years_sealed_not_served": [ "2021", "2022", "2023", "2024", "2025", "2026" ] }, "auditor": { "auditor": { "read_by": "Tavily regex", "read_date": "2026-11-06", "read_date_basis": "the record version as_of", "source": "https://www.costain.com/media/5sthahwm/ara-2025-final_for-web.pdf", "state": "confirmed", "value": "PricewaterhouseCoopers LLP" }, "auditor_firm_id": { "market": "UK", "state": "not_on_record" }, "auditor_location": { "market": "UK", "state": "not_on_record" }, "changes": { "market": "UK", "reason": "no lifecycle type map for this register yet (SHELF-01: us and ca first)", "state": "not_on_record" } }, "cmr": "uk-cm-kg/LSE/COST", "coverage": { "count": 0, "houses": [], "pages_checked": [], "read_by": "Perplexity sonar (search) · page read by this rail", "read_date": "2026-11-12", "since": null, "state": "none_found" }, "disclosure": { "against": { "exchange": { "issuers": 892, "median_cadence_gap_days": 4, "median_filings": 29, "median_latency_days": 3, "name": "LSE Main Market" }, "sector": { "issuers": 36, "median_cadence_gap_days": 6, "median_filings": 42.5, "median_latency_days": 3, "name": "Construction and Materials [501010]" } }, "by_type": { "agm_record_date": 2, "ch_accounts_filed": 1, "ch_capital": 63, "ch_confirmation_statement": 1, "ch_resolution": 1, "corporate_action": 40, "director_dealing": 13, "early_warning": 46, "financial_statement": 6, "regulatory_announcement": 20 }, "cadence_median_gap_days": 2, "filing_days": 121, "filings": 193, "latency_days": 2, "latest": [ { "category": null, "date": "2026-11-04", "source": "https://find-and-update.company-information.service.gov.uk/company/01393773/filing-history/MzU1MzUxODc3NGFkaXF6a2N4/document?format=pdf&download=0", "title": "capital cancellation shares — 2026-09-30", "type": "ch_capital" }, { "category": null, "date": "2026-11-04", "source": "https://find-and-update.company-information.service.gov.uk/company/01393773/filing-history/MzU1MzUxODc3N2FkaXF6a2N4/document?format=pdf&download=0", "title": "capital return purchase own shares", "type": "ch_capital" }, { "category": null, "date": "2026-11-03", "source": "https://www.investegate.co.uk/announcement/rns/costain-group--cost/holding-s-in-company/9856602", "title": "Holding(s) in Company", "type": "early_warning" }, { "category": null, "date": "2026-11-02", "source": "https://www.investegate.co.uk/announcement/rns/costain-group--cost/total-voting-rights/9853068", "title": "Total Voting Rights", "type": "corporate_action" }, { "category": null, "date": "2026-10-29", "source": "https://find-and-update.company-information.service.gov.uk/company/01393773/filing-history/MzU1MjIwMjg2MGFkaXF6a2N4/document?format=pdf&download=0", "title": "capital return purchase own shares", "type": "ch_capital" } ], "latest_filing_date": "2026-11-04", "read": "the node's event lines (list_events_since), as get_filings serves them", "source": "https://mcp.uk-cm-kg.ai/events/LSE/COST", "window": { "from": "2025-11-06", "to": "2026-11-06" } }, "identity": { "exchange": { "read_by": "LSE price explorer (exchange list)", "read_date": "2026-11-06", "read_date_basis": "the record version as_of", "source": "https://www.londonstockexchange.com/live-markets/market-data-dashboard/price-explorer (price-explorer feed api.londonstockexchange.com/api/v1/components/refresh, markets=MAINMARKET, categories=EQUITY, showonlylse=true)", "state": "sourced", "value": "LSE Main Market" }, "isin": { "read_by": "LSE instrument reference record (exchange site)", "read_date": "2026-11-06", "read_date_basis": "the record version as_of", "source": "https://api.londonstockexchange.com/api/gw/lse/instruments/alldata/COST", "state": "confirmed", "value": "GB00B64NSP76" }, "jurisdiction": { "read_by": "Companies House REST API (company profile) (jurisdiction field)", "read_date": "2026-11-06", "read_date_basis": "the record version as_of", "source": "https://find-and-update.company-information.service.gov.uk/company/01393773", "state": "confirmed", "value": "England and Wales (Companies House jurisdiction field)" }, "lei": { "read_by": "GLEIF ISIN-to-LEI mapping file (daily), LEI by exact ISIN", "read_date": "2026-11-09", "read_date_basis": "the field", "source": "https://mapping.gleif.org/api/v2/isin-lei/latest/download (ISIN GB00B64NSP76)", "state": "sourced", "value": "213800PKIJBZ2EDTKC88" }, "name": { "read_by": "LSE price explorer (exchange list)", "read_date": "2026-11-06", "read_date_basis": "the record version as_of", "source": "https://www.londonstockexchange.com/live-markets/market-data-dashboard/price-explorer (price-explorer feed api.londonstockexchange.com/api/v1/components/refresh, markets=MAINMARKET, categories=EQUITY, showonlylse=true)", "state": "sourced", "value": "COSTAIN GROUP PLC" }, "sector": { "read_by": "LSE issuer profile (exchange site)", "read_date": "2026-11-06", "read_date_basis": "the record version as_of", "source": "https://www.londonstockexchange.com/stock/COST/costain-group-plc/company-page", "state": "sourced", "value": "Construction and Materials [501010]" }, "security_type": { "read_by": "LSE price explorer (exchange list)", "read_date": "2026-11-06", "read_date_basis": "the record version as_of", "source": "https://www.londonstockexchange.com/live-markets/market-data-dashboard/price-explorer (price-explorer feed api.londonstockexchange.com/api/v1/components/refresh, markets=MAINMARKET, categories=EQUITY, showonlylse=true)", "state": "sourced", "value": "Corporate" }, "segment": { "read_by": "LSE price explorer (exchange list)", "read_date": "2026-11-06", "read_date_basis": "the record version as_of", "source": "https://www.londonstockexchange.com/live-markets/market-data-dashboard/price-explorer (price-explorer feed api.londonstockexchange.com/api/v1/components/refresh, markets=MAINMARKET, categories=EQUITY, showonlylse=true)", "state": "sourced", "value": "STMM" }, "ticker": { "read_by": "LSE price explorer (exchange list)", "read_date": "2026-11-06", "read_date_basis": "the record version as_of", "source": "https://www.londonstockexchange.com/live-markets/market-data-dashboard/price-explorer (price-explorer feed api.londonstockexchange.com/api/v1/components/refresh, markets=MAINMARKET, categories=EQUITY, showonlylse=true)", "state": "sourced", "value": "COST" }, "website": { "read_by": "LSE issuer profile (exchange site)", "read_date": "2026-11-06", "read_date_basis": "the record version as_of", "source": "https://www.londonstockexchange.com/stock/COST/costain-group-plc/company-page", "state": "sourced", "value": "http://www.costain.com" } }, "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": { "market": "UK", "reason": "no lifecycle type map for this register yet (SHELF-01: us and ca first)", "state": "not_on_record" }, "domicile_change": { "market": "UK", "reason": "no lifecycle type map for this register yet (SHELF-01: us and ca first)", "state": "not_on_record" }, "listing": { "market": "UK", "reason": "no lifecycle type map for this register yet (SHELF-01: us and ca first)", "state": "not_on_record" }, "name_change": { "market": "UK", "reason": "no lifecycle type map for this register yet (SHELF-01: us and ca first)", "state": "not_on_record" }, "segment_move": { "market": "UK", "reason": "no lifecycle type map for this register yet (SHELF-01: us and ca first)", "state": "not_on_record" } }, "market": "UK", "node": "uk-cm-kg", "numbers_hash": "sha256:f415719ce51e2cce8ce7b0c234d5a79b0f9dc98f2a0684c6c8a3622f15bbf839", "open_research": { "read_date": "2026-11-12", "rows": [], "state": "none_found" }, "orderability": { "chapter_as_of": "2026-11-04", "client_categories": [ "elective professional client", "eligible counterparty" ], "outcomes": { "elective professional client": { "determinable": true, "signal": "ACM-200" }, "eligible counterparty": { "determinable": true, "signal": "ACM-200" } }, "read": { "basis": "one live read per instrument class, halt state and client category on this market; this issuer's group", "chapter": "https://mcp.uk-cm-kg.ai/book/aio.json", "door": "https://mcp.uk-cm-kg.ai/mcp", "tool": "get_orderability" }, "rule_version": "acm-68000/uk/product-governance-fca-prod-sourcebook/r1", "section": "uk.aio.v16" }, "record": { "as_of": "2026-11-06", "url": "https://mcp.uk-cm-kg.ai/record/LSE/COST", "version": 1 }, "schema": "research-numbers v0.1 (USR-01, 2026-11-11)", "status": { "read_date": "2026-11-09", "source": "https://marketsecurities.fca.org.uk/officiallist", "value": "listed, not halted" } }, "numbers_hash": "sha256:f415719ce51e2cce8ce7b0c234d5a79b0f9dc98f2a0684c6c8a3622f15bbf839", "path": "/uk/LSE/COST", "schema": "research-page v0.1 (USR-02, 2026-11-11)", "sections": [ { "id": "identity", "text": "The issuer is COSTAIN GROUP PLC, listed on the LSE Main Market under ticker COST, with ISIN GB00B64NSP76 and LEI 213800PKIJBZ2EDTKC88. The security type is Corporate, the segment is STMM, the sector is Construction and Materials [501010], and the jurisdiction is England and Wales (Companies House jurisdiction field). The listing status is listed, not halted.", "title": "Identity and listing" }, { "id": "disclosure", "text": "The record holds 193 filings in the window 2025-11-06 to 2026-11-06, across 121 filing days. The median gap between filing days is 2.0 days. The latest filing is dated 2026-11-04, is of type ch_capital, and falls 2 days before the record date of 2026-11-06. The LSE Main Market median cadence gap is 4 days across 892 issuers, with a median of 29.0 filings and a median latency of 3 days. The Construction and Materials [501010] sector median cadence gap is 6.0 days across 36 issuers, with a median of 42.5 filings and a median latency of 3.0 days. The filings by type are: agm_record_date 2, ch_accounts_filed 1, ch_capital 63, ch_confirmation_statement 1, ch_resolution 1, corporate_action 40, director_dealing 13, early_warning 46, financial_statement 6, regulatory_announcement 20.", "title": "The disclosure read" }, { "id": "auditor", "text": "The auditor of record is PricewaterhouseCoopers LLP. The auditor's location is not on the record. Auditor changes are not on the record, as this register has no lifecycle type map yet (SHELF-01: us and ca first).", "title": "Auditor" }, { "id": "events", "text": "Listing, delisting, name change, domicile change and segment move are not on the record, as this register has no lifecycle type map yet (SHELF-01: us and ca first). The halt flag is listed, not halted.", "title": "Events and halts" }, { "id": "orderability", "text": "For the elective professional client category, the signal is ACM-200 and the outcome is determinable. For the eligible counterparty category, the signal is ACM-200 and the outcome is determinable. The rule version is acm-68000/uk/product-governance-fca-prod-sourcebook/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. The count is 0.", "title": "Coverage" }, { "id": "open_research", "text": "No openly published research notes were found. The count is 0.", "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 vintage is not sealed. No issuer years are sealed on the record, and the market earliest sealed date is not on the record. The live record began on 2026-09-11. The years 2021, 2022, 2023, 2024, 2025 and 2026 are sealed in the store but not served as of a date, and the as-of door answers not_sealed.", "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": [ { "for": "identity.exchange", "source": "https://www.londonstockexchange.com/live-markets/market-data-dashboard/price-explorer" }, { "for": "identity.isin", "source": "https://api.londonstockexchange.com/api/gw/lse/instruments/alldata/COST" }, { "for": "identity.jurisdiction", "source": "https://find-and-update.company-information.service.gov.uk/company/01393773" }, { "for": "identity.lei", "source": "https://mapping.gleif.org/api/v2/isin-lei/latest/download" }, { "for": "identity.sector", "source": "https://www.londonstockexchange.com/stock/COST/costain-group-plc/company-page" }, { "for": "the disclosure lines", "source": "https://mcp.uk-cm-kg.ai/events/LSE/COST" }, { "for": "the halt flag", "source": "https://marketsecurities.fca.org.uk/officiallist" }, { "for": "the auditor", "source": "https://www.costain.com/media/5sthahwm/ara-2025-final_for-web.pdf" }, { "for": "the orderability chapter", "source": "https://mcp.uk-cm-kg.ai/book/aio.json" }, { "for": "the record", "source": "https://mcp.uk-cm-kg.ai/record/LSE/COST" } ], "title": "COSTAIN GROUP PLC (COST) — research page", "writer": { "by": "Claude through the platform account, Haiku class; one pass; checked against the numbers", "engine": "claude-haiku-5-5" } }