{
  "schema_version": "yc-founder-professional-history-public-v2",
  "artifact": "yc-founder-history-2026-09-18.json",
  "generated_at": "2026-09-20",
  "source_scope": {
    "source_snapshot_date": "2026-09-18",
    "roster_rows": 1586,
    "roster_sha256": "e18917eb02e8338ba579c7cf2d974d68a97e41781a0d5f0f1f0a523bbf2fb406",
    "screen_candidate_rows": 114,
    "no_explicit_cue_rows": 1472,
    "purpose_selected_rows": 50,
    "source_review_method": "Model-assisted source review of public company descriptions; not manual human annotation.",
    "selection_rule": "Purpose-selected distinct cases with explicit professional-history text; not random and not a prevalence estimate. Missing text is unknown.",
    "source_type": "Current public YC directory descriptions written by the companies; self-reported and not independently employment-verified.",
    "identity_rule": "company_id is yc:<source_object_id>; original_membership_id preserves the source cohort membership separately."
  },
  "selection_replacements": [
    {
      "requested_company_name": "Freestyle",
      "replacement_company_name": "Nex",
      "replacement_company_id": "yc:33342",
      "reason": "Freestyle is duplicated in the current roster, so the name is not resolved by cohort or URL. Nex is a unique current candidate with an explicit ex-HubSpot workflow history."
    }
  ],
  "records": [
    {
      "company_id": "yc:30078",
      "original_membership_id": "yc:Fall 2024:30078",
      "source_object_id": "30078",
      "company_name": "Abundant",
      "program": "Y Combinator",
      "cohort": "Fall 2024",
      "official_profile_url": "https://www.ycombinator.com/companies/abundant",
      "source_snapshot_date": "2026-09-18",
      "professional_signal": "Founding team includes prior Waymo, Google, Meta and AWS data/ML experience.",
      "professional_signal_category": "team_prior_roles",
      "professional_signal_category_label": "Team description names prior professional roles or operating backgrounds.",
      "source_excerpt_quote": "founding team consists of second-time founders, ML engineers and data leads from Waymo, Google, Meta and AWS.",
      "source_excerpt_quote_word_count": 17,
      "source_excerpt_redacted": false,
      "description_sha256": "b45b8baf94ed18485d8d29e23b2c85e226a00e9749bce07697f9879e3fb4dbfe",
      "supports": "The current public company description reports this prior professional or operating history.",
      "does_not_support": "Employment verification, current role, founder quality, product quality, market fit, causal performance, demographics or personal-contact information."
    },
    {
      "company_id": "yc:30044",
      "original_membership_id": "yc:Fall 2024:30044",
      "source_object_id": "30044",
      "company_name": "Sandra AI",
      "program": "Y Combinator",
      "cohort": "Fall 2024",
      "official_profile_url": "https://www.ycombinator.com/companies/sandra-ai",
      "source_snapshot_date": "2026-09-18",
      "professional_signal": "McKinsey, HEC and MIT alumni who met at École Polytechnique.",
      "professional_signal_category": "team_prior_roles",
      "professional_signal_category_label": "Team description names prior professional roles or operating backgrounds.",
      "source_excerpt_quote": "Founded by 3 McKinsey, HEC & MIT alumni who met 10 years ago at Ecole Polytechnique",
      "source_excerpt_quote_word_count": 16,
      "source_excerpt_redacted": false,
      "description_sha256": "5a1e091538632685ec566703a56e7da0556758e84060abcd9361ab2a41f269cc",
      "supports": "The current public company description reports this prior professional or operating history.",
      "does_not_support": "Employment verification, current role, founder quality, product quality, market fit, causal performance, demographics or personal-contact information."
    },
    {
      "company_id": "yc:30937",
      "original_membership_id": "yc:Fall 2025:30937",
      "source_object_id": "30937",
      "company_name": "Anto Biosciences",
      "program": "Y Combinator",
      "cohort": "Fall 2025",
      "official_profile_url": "https://www.ycombinator.com/companies/anto-biosciences",
      "source_snapshot_date": "2026-09-18",
      "professional_signal": "Second-time founders with research and clinical-company backgrounds.",
      "professional_signal_category": "repeat_founder_and_domain_history",
      "professional_signal_category_label": "Description names repeat-founder history alongside domain or research work.",
      "source_excerpt_quote": "Nature-published researcher … David (Harvard Medical School Gastroenterology, J&J), second-time founders",
      "source_excerpt_quote_word_count": 11,
      "source_excerpt_redacted": false,
      "description_sha256": "eb958c8e2948850786f7f9aaf81f794f70b10f6239ada978e0f02a5c3ff79e53",
      "supports": "The current public company description reports this prior professional or operating history.",
      "does_not_support": "Employment verification, current role, founder quality, product quality, market fit, causal performance, demographics or personal-contact information."
    },
    {
      "company_id": "yc:30847",
      "original_membership_id": "yc:Fall 2025:30847",
      "source_object_id": "30847",
      "company_name": "Brickwise",
      "program": "Y Combinator",
      "cohort": "Fall 2025",
      "official_profile_url": "https://www.ycombinator.com/companies/brickwise",
      "source_snapshot_date": "2026-09-18",
      "professional_signal": "Former founder at LiveLink AI.",
      "professional_signal_category": "prior_founder_and_operating_scale",
      "professional_signal_category_label": "Description names a prior founder role and operating scale.",
      "source_excerpt_quote": "co-founder & CEO, is an ex-Founder at LiveLink AI",
      "source_excerpt_quote_word_count": 9,
      "source_excerpt_redacted": false,
      "description_sha256": "ad07ad46d52b296fdd07c9fdf7f330ea112a60f79958211b9e1aa34f774f6c01",
      "supports": "The current public company description reports this prior professional or operating history.",
      "does_not_support": "Employment verification, current role, founder quality, product quality, market fit, causal performance, demographics or personal-contact information."
    },
    {
      "company_id": "yc:30930",
      "original_membership_id": "yc:Fall 2025:30930",
      "source_object_id": "30930",
      "company_name": "Cortex AI",
      "program": "Y Combinator",
      "cohort": "Fall 2025",
      "official_profile_url": "https://www.ycombinator.com/companies/cortex-ai",
      "source_snapshot_date": "2026-09-18",
      "professional_signal": "Prior co-founder of Carousell, a consumer-to-consumer marketplace.",
      "professional_signal_category": "prior_founder_and_company_scale",
      "professional_signal_category_label": "Description names a prior founder role and company-scale context.",
      "source_excerpt_quote": "previous experience as co-founder of Carousell, a C2C marketplace that scaled to a $1B+ valuation.",
      "source_excerpt_quote_word_count": 15,
      "source_excerpt_redacted": false,
      "description_sha256": "fcc2281277e8593e1d9a1936dfdf997406d031602cc01bebfce06cdaacb8d37d",
      "supports": "The current public company description reports this prior professional or operating history.",
      "does_not_support": "Employment verification, current role, founder quality, product quality, market fit, causal performance, demographics or personal-contact information."
    },
    {
      "company_id": "yc:30993",
      "original_membership_id": "yc:Fall 2025:30993",
      "source_object_id": "30993",
      "company_name": "DiligenceSquared",
      "program": "Y Combinator",
      "cohort": "Fall 2025",
      "official_profile_url": "https://www.ycombinator.com/companies/diligencesquared-inc",
      "source_snapshot_date": "2026-09-18",
      "professional_signal": "Repeat founder and former Google engineer with BCG market-diligence context.",
      "professional_signal_category": "repeat_founder_and_prior_role",
      "professional_signal_category_label": "Description names repeat-founder history and a prior professional role.",
      "source_excerpt_quote": "Soren sold them as a Principal at BCG … Harshil is a repeat founder and former Software Engineer at Google.",
      "source_excerpt_quote_word_count": 20,
      "source_excerpt_redacted": false,
      "description_sha256": "71def71c66a90867f129f0405f47ae549836bf6945cc517c9f53e43d227daacb",
      "supports": "The current public company description reports this prior professional or operating history.",
      "does_not_support": "Employment verification, current role, founder quality, product quality, market fit, causal performance, demographics or personal-contact information."
    },
    {
      "company_id": "yc:29161",
      "original_membership_id": "yc:Fall 2025:29161",
      "source_object_id": "29161",
      "company_name": "Goldbridge",
      "program": "Y Combinator",
      "cohort": "Fall 2025",
      "official_profile_url": "https://www.ycombinator.com/companies/goldbridge",
      "source_snapshot_date": "2026-09-18",
      "professional_signal": "2x YC founder, White House advisor and real-estate operator history.",
      "professional_signal_category": "repeat_founder_and_operator_history",
      "professional_signal_category_label": "Description names repeat-founder history and operating experience.",
      "source_excerpt_quote": "founding team includes a 2x YC founder, former White House advisor, and 100-unit real estate owner/operator",
      "source_excerpt_quote_word_count": 16,
      "source_excerpt_redacted": false,
      "description_sha256": "b0e7f4e9c75bc12f5430985ebaf83a8fb805da5d3de6c28f5ff6f1c7de72cc20",
      "supports": "The current public company description reports this prior professional or operating history.",
      "does_not_support": "Employment verification, current role, founder quality, product quality, market fit, causal performance, demographics or personal-contact information."
    },
    {
      "company_id": "yc:30972",
      "original_membership_id": "yc:Fall 2025:30972",
      "source_object_id": "30972",
      "company_name": "Jarmin",
      "program": "Y Combinator",
      "cohort": "Fall 2025",
      "official_profile_url": "https://www.ycombinator.com/companies/jarmin",
      "source_snapshot_date": "2026-09-18",
      "professional_signal": "Multiple named prior employers and professional functions in founding-team description.",
      "professional_signal_category": "team_prior_roles",
      "professional_signal_category_label": "Team description names prior professional roles or operating backgrounds.",
      "source_excerpt_quote": "founding team is from Meta SuperIntelligence Labs (Staff Engineers), Apple (Machine Learning Engineer), AWS (scaling infra), Lockheed-Martin (Research), and JPMorganChase",
      "source_excerpt_quote_word_count": 20,
      "source_excerpt_redacted": false,
      "description_sha256": "e23ba7479ac766660c89018effb531056880429afcb9667ebfb5388b7081e823",
      "supports": "The current public company description reports this prior professional or operating history.",
      "does_not_support": "Employment verification, current role, founder quality, product quality, market fit, causal performance, demographics or personal-contact information."
    },
    {
      "company_id": "yc:30997",
      "original_membership_id": "yc:Fall 2025:30997",
      "source_object_id": "30997",
      "company_name": "LunaBill",
      "program": "Y Combinator",
      "cohort": "Fall 2025",
      "official_profile_url": "https://www.ycombinator.com/companies/lunabill",
      "source_snapshot_date": "2026-09-18",
      "professional_signal": "2x founder and medical-billing operator history.",
      "professional_signal_category": "repeat_founder_and_domain_history",
      "professional_signal_category_label": "Description names repeat-founder history alongside domain or research work.",
      "source_excerpt_quote": "2x founder, with 3+ years of experience building in healthcare including operating a medical billing company with 200+ healthcare clients.",
      "source_excerpt_quote_word_count": 20,
      "source_excerpt_redacted": false,
      "description_sha256": "79957a43234f92ec2d1ce7cec2fab268308822fa4161d2b5df46ef200fb5275e",
      "supports": "The current public company description reports this prior professional or operating history.",
      "does_not_support": "Employment verification, current role, founder quality, product quality, market fit, causal performance, demographics or personal-contact information."
    },
    {
      "company_id": "yc:30449",
      "original_membership_id": "yc:Spring 2025:30449",
      "source_object_id": "30449",
      "company_name": "Attune",
      "program": "Y Combinator",
      "cohort": "Spring 2025",
      "official_profile_url": "https://www.ycombinator.com/companies/attune",
      "source_snapshot_date": "2026-09-18",
      "professional_signal": "FOSSA engineering and product leadership, Teleport product leadership, and build-systems experience.",
      "professional_signal_category": "prior_company_roles",
      "professional_signal_category_label": "Description names prior company roles or employers.",
      "source_excerpt_quote": "FOSSA … Head of Engineering … Head of Product … build systems expertise … VP of Product at Teleport",
      "source_excerpt_quote_word_count": 19,
      "source_excerpt_redacted": false,
      "description_sha256": "2752cb63bd4f1d520a56be6a5893c4c8608d0ed4fa55707d87677a19353467c8",
      "supports": "The current public company description reports this prior professional or operating history.",
      "does_not_support": "Employment verification, current role, founder quality, product quality, market fit, causal performance, demographics or personal-contact information.",
      "source_excerpt_omissions": "Ellipses separate verbatim fragments in original order."
    },
    {
      "company_id": "yc:30461",
      "original_membership_id": "yc:Spring 2025:30461",
      "source_object_id": "30461",
      "company_name": "Combinely",
      "program": "Y Combinator",
      "cohort": "Spring 2025",
      "official_profile_url": "https://www.ycombinator.com/companies/combinely",
      "source_snapshot_date": "2026-09-18",
      "professional_signal": "An ex-Deloitte and Google team.",
      "professional_signal_category": "prior_company_roles",
      "professional_signal_category_label": "Description names prior company roles or employers.",
      "source_excerpt_quote": "Built by an ex-Deloitte/Google team",
      "source_excerpt_quote_word_count": 5,
      "source_excerpt_redacted": false,
      "description_sha256": "224873409a7b4a57a62cc3116aa5f66f0814f74417c0c0feba4714013da904e7",
      "supports": "The current public company description reports this prior professional or operating history.",
      "does_not_support": "Employment verification, current role, founder quality, product quality, market fit, causal performance, demographics or personal-contact information."
    },
    {
      "company_id": "yc:30540",
      "original_membership_id": "yc:Spring 2025:30540",
      "source_object_id": "30540",
      "company_name": "Lumari",
      "program": "Y Combinator",
      "cohort": "Spring 2025",
      "official_profile_url": "https://www.ycombinator.com/companies/lumari",
      "source_snapshot_date": "2026-09-18",
      "professional_signal": "Engineers from Google, Tesla, Amazon and Stripe with supply-chain systems experience.",
      "professional_signal_category": "team_prior_roles",
      "professional_signal_category_label": "Team description names prior professional roles or operating backgrounds.",
      "source_excerpt_quote": "Founded by engineers from Google, Tesla, Amazon, and Stripe … supply chain systems serving millions of users.",
      "source_excerpt_quote_word_count": 17,
      "source_excerpt_redacted": false,
      "description_sha256": "cc8964606250cc8ab14829774b13222d901cab7b1d2e37a3c77dec8ba2cf1b49",
      "supports": "The current public company description reports this prior professional or operating history.",
      "does_not_support": "Employment verification, current role, founder quality, product quality, market fit, causal performance, demographics or personal-contact information."
    },
    {
      "company_id": "yc:30523",
      "original_membership_id": "yc:Spring 2025:30523",
      "source_object_id": "30523",
      "company_name": "Mesmer",
      "program": "Y Combinator",
      "cohort": "Spring 2025",
      "official_profile_url": "https://www.ycombinator.com/companies/mesmer",
      "source_snapshot_date": "2026-09-18",
      "professional_signal": "Repeat founders and CTOs with engineering leadership at Origin Financial.",
      "professional_signal_category": "repeat_founder_and_prior_company",
      "professional_signal_category_label": "Description names repeat-founder history and a prior company.",
      "source_excerpt_quote": "repeat founders and CTOs with 15+ years of experience, including leading engineering together at Origin Financial ($400M)",
      "source_excerpt_quote_word_count": 17,
      "source_excerpt_redacted": false,
      "description_sha256": "75efeaf115830ccf6b07ba404e681b6ae8616668f0fd5c0a69439b08fb52ff31",
      "supports": "The current public company description reports this prior professional or operating history.",
      "does_not_support": "Employment verification, current role, founder quality, product quality, market fit, causal performance, demographics or personal-contact information."
    },
    {
      "company_id": "yc:30496",
      "original_membership_id": "yc:Spring 2025:30496",
      "source_object_id": "30496",
      "company_name": "QualGent",
      "program": "Y Combinator",
      "cohort": "Spring 2025",
      "official_profile_url": "https://www.ycombinator.com/companies/qualgent",
      "source_snapshot_date": "2026-09-18",
      "professional_signal": "Google engineering leadership across Android XR, Stadia, Quick Share and foldable devices.",
      "professional_signal_category": "prior_company_workflow",
      "professional_signal_category_label": "Description names prior company workflow experience.",
      "source_excerpt_quote": "founders’ experience leading engineering teams at Google across Android XR, Stadia, Quick Share, and foldable devices",
      "source_excerpt_quote_word_count": 16,
      "source_excerpt_redacted": false,
      "description_sha256": "817a317819e7d37b7a58481d038afe409be5dd32f46567d80314a6706433c9d7",
      "supports": "The current public company description reports this prior professional or operating history.",
      "does_not_support": "Employment verification, current role, founder quality, product quality, market fit, causal performance, demographics or personal-contact information."
    },
    {
      "company_id": "yc:30514",
      "original_membership_id": "yc:Spring 2025:30514",
      "source_object_id": "30514",
      "company_name": "Scalar Field",
      "program": "Y Combinator",
      "cohort": "Spring 2025",
      "official_profile_url": "https://www.ycombinator.com/companies/scalar-field",
      "source_snapshot_date": "2026-09-18",
      "professional_signal": "Prior trading and Microsoft engineering leadership.",
      "professional_signal_category": "prior_operator_roles",
      "professional_signal_category_label": "Description names a prior operating role.",
      "source_excerpt_quote": "trader at Tower Research and Goldman Sachs … led engineering teams at Microsoft",
      "source_excerpt_quote_word_count": 13,
      "source_excerpt_redacted": false,
      "description_sha256": "54e85fc290a2aa72fa31e85147978685e784a583b7cc71778fdfeac254e04065",
      "supports": "The current public company description reports this prior professional or operating history.",
      "does_not_support": "Employment verification, current role, founder quality, product quality, market fit, causal performance, demographics or personal-contact information."
    },
    {
      "company_id": "yc:30456",
      "original_membership_id": "yc:Spring 2025:30456",
      "source_object_id": "30456",
      "company_name": "Tinfoil",
      "program": "Y Combinator",
      "cohort": "Spring 2025",
      "official_profile_url": "https://www.ycombinator.com/companies/tinfoil",
      "source_snapshot_date": "2026-09-18",
      "professional_signal": "Cloudflare security engineering and MIT security research.",
      "professional_signal_category": "prior_company_and_academic_roles",
      "professional_signal_category_label": "Description names prior company and academic or professional roles.",
      "source_excerpt_quote": "systems engineer at Cloudflare … Jules and Sacha hold PhDs from MIT",
      "source_excerpt_quote_word_count": 12,
      "source_excerpt_redacted": false,
      "description_sha256": "4aec3cfe92965076f01e9459c020d3cf00c9b73c92e32ffc80fe388c1c51c884",
      "supports": "The current public company description reports this prior professional or operating history.",
      "does_not_support": "Employment verification, current role, founder quality, product quality, market fit, causal performance, demographics or personal-contact information."
    },
    {
      "company_id": "yc:30404",
      "original_membership_id": "yc:Spring 2025:30404",
      "source_object_id": "30404",
      "company_name": "Vybe",
      "program": "Y Combinator",
      "cohort": "Spring 2025",
      "official_profile_url": "https://www.ycombinator.com/companies/vybe",
      "source_snapshot_date": "2026-09-18",
      "professional_signal": "Two repeat YC founders with prior companies Plato and Wolfia.",
      "professional_signal_category": "prior_founder_and_exit_history",
      "professional_signal_category_label": "Description names prior founder companies or exits.",
      "source_excerpt_quote": "2 repeat YC founders … We founded Plato (W16, sold to Coda) and Wolfia (S22).",
      "source_excerpt_quote_word_count": 15,
      "source_excerpt_redacted": false,
      "description_sha256": "f77d27773c4922cd14cf20c1b69b8731e6ced43f05ce62a9a39afcb04eb2ba22",
      "supports": "The current public company description reports this prior professional or operating history.",
      "does_not_support": "Employment verification, current role, founder quality, product quality, market fit, causal performance, demographics or personal-contact information."
    },
    {
      "company_id": "yc:31576",
      "original_membership_id": "yc:Spring 2026:31576",
      "source_object_id": "31576",
      "company_name": "Akkari",
      "program": "Y Combinator",
      "cohort": "Spring 2026",
      "official_profile_url": "https://www.ycombinator.com/companies/akkari",
      "source_snapshot_date": "2026-09-18",
      "professional_signal": "2x YC founders with prior OrderAhead and BLADE companies.",
      "professional_signal_category": "repeat_founder_and_prior_company",
      "professional_signal_category_label": "Description names repeat-founder history and a prior company.",
      "source_excerpt_quote": "2x YC founders … OrderAhead (acquired by Square) … BLADE to $1.2B+ in monthly trading volume.",
      "source_excerpt_quote_word_count": 16,
      "source_excerpt_redacted": false,
      "description_sha256": "e4610f8b246adacb88b46a25cbe5e1f5a3335c903ad06c64dc81fed597db68ea",
      "supports": "The current public company description reports this prior professional or operating history.",
      "does_not_support": "Employment verification, current role, founder quality, product quality, market fit, causal performance, demographics or personal-contact information."
    },
    {
      "company_id": "yc:31362",
      "original_membership_id": "yc:Spring 2026:31362",
      "source_object_id": "31362",
      "company_name": "Discovered Materials",
      "program": "Y Combinator",
      "cohort": "Spring 2026",
      "official_profile_url": "https://www.ycombinator.com/companies/discovered-materials",
      "source_snapshot_date": "2026-09-18",
      "professional_signal": "Stanford semiconductor research and prior Persona AI applied-science work.",
      "professional_signal_category": "prior_research_company",
      "professional_signal_category_label": "Description names prior research or company work.",
      "source_excerpt_quote": "PhD at Stanford on material discovery for semiconductors … founding applied scientist at Persona AI (acquired by Luma Labs)",
      "source_excerpt_quote_word_count": 19,
      "source_excerpt_redacted": false,
      "description_sha256": "571248823bb6e33c1943d0a8e44b4809b30c5096215dd394ebcf26916c28c6e8",
      "supports": "The current public company description reports this prior professional or operating history.",
      "does_not_support": "Employment verification, current role, founder quality, product quality, market fit, causal performance, demographics or personal-contact information."
    },
    {
      "company_id": "yc:31445",
      "original_membership_id": "yc:Spring 2026:31445",
      "source_object_id": "31445",
      "company_name": "Harbor",
      "program": "Y Combinator",
      "cohort": "Spring 2026",
      "official_profile_url": "https://www.ycombinator.com/companies/runharbor",
      "source_snapshot_date": "2026-09-18",
      "professional_signal": "Clinical trials/regulatory workflow and prior Google/Ramp engineering.",
      "professional_signal_category": "prior_domain_workflow",
      "professional_signal_category_label": "Description names prior domain workflow experience.",
      "source_excerpt_quote": "four years in clinical trials and regulatory strategy … first-in-human trials to FDA authorization. … software at Google and Ramp",
      "source_excerpt_quote_word_count": 20,
      "source_excerpt_redacted": false,
      "description_sha256": "d8dc8224f5945f910d39a66bd0418568f146fc70ef3e374924a58f40d128fa21",
      "supports": "The current public company description reports this prior professional or operating history.",
      "does_not_support": "Employment verification, current role, founder quality, product quality, market fit, causal performance, demographics or personal-contact information.",
      "source_excerpt_omissions": "Ellipses separate verbatim fragments in original order."
    },
    {
      "company_id": "yc:31393",
      "original_membership_id": "yc:Spring 2026:31393",
      "source_object_id": "31393",
      "company_name": "KelAI",
      "program": "Y Combinator",
      "cohort": "Spring 2026",
      "official_profile_url": "https://www.ycombinator.com/companies/kelai",
      "source_snapshot_date": "2026-09-18",
      "professional_signal": "Prior portfolio-manager role and strategy domain.",
      "professional_signal_category": "prior_investment_role",
      "professional_signal_category_label": "Description names prior investment or portfolio role.",
      "source_excerpt_quote": "Founded by former WorldQuant portfolio manager & head of event driven systematic strategies Jeremie Cohen",
      "source_excerpt_quote_word_count": 15,
      "source_excerpt_redacted": false,
      "description_sha256": "80e0a8b65e43271aa8850e04c177f8b9f132c83d387ed8d93577b398f2856a9b",
      "supports": "The current public company description reports this prior professional or operating history.",
      "does_not_support": "Employment verification, current role, founder quality, product quality, market fit, causal performance, demographics or personal-contact information."
    },
    {
      "company_id": "yc:31420",
      "original_membership_id": "yc:Spring 2026:31420",
      "source_object_id": "31420",
      "company_name": "Kimpton",
      "program": "Y Combinator",
      "cohort": "Spring 2026",
      "official_profile_url": "https://www.ycombinator.com/companies/kimpton",
      "source_snapshot_date": "2026-09-18",
      "professional_signal": "Goldman/SpaceX roles and prior fund operation.",
      "professional_signal_category": "prior_company_and_founder_history",
      "professional_signal_category_label": "Description names prior company and founder history.",
      "source_excerpt_quote": "ex-Goldman engineers and an ex-SpaceX engineer … start our own quantitative systematic hedge fund",
      "source_excerpt_quote_word_count": 14,
      "source_excerpt_redacted": false,
      "description_sha256": "f328ddb0a21ef9a697b4d482e0124e9ecda2fe5dc37becd58bd0728b570d2ba8",
      "supports": "The current public company description reports this prior professional or operating history.",
      "does_not_support": "Employment verification, current role, founder quality, product quality, market fit, causal performance, demographics or personal-contact information."
    },
    {
      "company_id": "yc:31539",
      "original_membership_id": "yc:Spring 2026:31539",
      "source_object_id": "31539",
      "company_name": "Klaimee",
      "program": "Y Combinator",
      "cohort": "Spring 2026",
      "official_profile_url": "https://www.ycombinator.com/companies/klaimee",
      "source_snapshot_date": "2026-09-18",
      "professional_signal": "Insurance operator role and product-scaling history.",
      "professional_signal_category": "prior_domain_operator_role",
      "professional_signal_category_label": "Description names prior domain or operator role.",
      "source_excerpt_quote": "ex-General Manager at SafetyWing, grew insurance product from $5M to $60M revenue, 5 years launching insurance products from scratch",
      "source_excerpt_quote_word_count": 19,
      "source_excerpt_redacted": false,
      "description_sha256": "f51b09fc2a9991d0fddb57d417cc81a25b3d814a4b5f627b6731ea033cdb0fb5",
      "supports": "The current public company description reports this prior professional or operating history.",
      "does_not_support": "Employment verification, current role, founder quality, product quality, market fit, causal performance, demographics or personal-contact information."
    },
    {
      "company_id": "yc:31360",
      "original_membership_id": "yc:Spring 2026:31360",
      "source_object_id": "31360",
      "company_name": "LightSprint",
      "program": "Y Combinator",
      "cohort": "Spring 2026",
      "official_profile_url": "https://www.ycombinator.com/companies/lightsprint",
      "source_snapshot_date": "2026-09-18",
      "professional_signal": "Prior SEA Group and Temasek AI-product experience.",
      "professional_signal_category": "team_prior_roles",
      "professional_signal_category_label": "Team description names prior professional roles or operating backgrounds.",
      "source_excerpt_quote": "AI investor who previously scaled AI products at SEA Group (NYSE: SE) and Temasek ($300B fund)",
      "source_excerpt_quote_word_count": 16,
      "source_excerpt_redacted": false,
      "description_sha256": "5f8dc1456cb1e456104610496be2b64a55e6c2c7c01269323abcb3acc46a520b",
      "supports": "The current public company description reports this prior professional or operating history.",
      "does_not_support": "Employment verification, current role, founder quality, product quality, market fit, causal performance, demographics or personal-contact information."
    },
    {
      "company_id": "yc:29636",
      "original_membership_id": "yc:Summer 2024:29636",
      "source_object_id": "29636",
      "company_name": "Bayesline",
      "program": "Y Combinator",
      "cohort": "Summer 2024",
      "official_profile_url": "https://www.ycombinator.com/companies/bayesline",
      "source_snapshot_date": "2026-09-18",
      "professional_signal": "Ex-Bloomberg and BlackRock finance leadership.",
      "professional_signal_category": "prior_finance_roles",
      "professional_signal_category_label": "Description names prior finance roles.",
      "source_excerpt_quote": "Sebastian, CFA (ex Bloomberg Quant & AI Research) and Misha, PhD (ex BlackRock Managing Director)",
      "source_excerpt_quote_word_count": 15,
      "source_excerpt_redacted": false,
      "description_sha256": "10873192f52f9d24532e684993ef5255a29ee042ee526e661820c74e70c41fa1",
      "supports": "The current public company description reports this prior professional or operating history.",
      "does_not_support": "Employment verification, current role, founder quality, product quality, market fit, causal performance, demographics or personal-contact information."
    },
    {
      "company_id": "yc:29840",
      "original_membership_id": "yc:Summer 2024:29840",
      "source_object_id": "29840",
      "company_name": "Blaze",
      "program": "Y Combinator",
      "cohort": "Summer 2024",
      "official_profile_url": "https://www.ycombinator.com/companies/blaze-2",
      "source_snapshot_date": "2026-09-18",
      "professional_signal": "Prior startup and Spotify/Artsy team experience.",
      "professional_signal_category": "prior_founder_and_scale",
      "professional_signal_category_label": "Description names repeat-founder history and company scale.",
      "source_excerpt_quote": "scaled their last startup to $1M in ARR … led teams at Spotify and Artsy.",
      "source_excerpt_quote_word_count": 15,
      "source_excerpt_redacted": false,
      "description_sha256": "ff7486343d3cc8fd037f4539f3b267b5951f426c8d3826685520e922b6f08165",
      "supports": "The current public company description reports this prior professional or operating history.",
      "does_not_support": "Employment verification, current role, founder quality, product quality, market fit, causal performance, demographics or personal-contact information."
    },
    {
      "company_id": "yc:29729",
      "original_membership_id": "yc:Summer 2024:29729",
      "source_object_id": "29729",
      "company_name": "Clearly AI",
      "program": "Y Combinator",
      "cohort": "Summer 2024",
      "official_profile_url": "https://www.ycombinator.com/companies/clearly-ai",
      "source_snapshot_date": "2026-09-18",
      "professional_signal": "Prior security-review workflow at Amazon/Moveworks.",
      "professional_signal_category": "prior_workflow_experience",
      "professional_signal_category_label": "Description names prior workflow experience.",
      "source_excerpt_quote": "performed hundreds of reviews at Amazon and Moveworks",
      "source_excerpt_quote_word_count": 8,
      "source_excerpt_redacted": false,
      "description_sha256": "042266cf19538c748e6f77f5d2ccd2b2e00750a9cf80b95f8eefbcb2e94a1f3e",
      "supports": "The current public company description reports this prior professional or operating history.",
      "does_not_support": "Employment verification, current role, founder quality, product quality, market fit, causal performance, demographics or personal-contact information."
    },
    {
      "company_id": "yc:29683",
      "original_membership_id": "yc:Summer 2024:29683",
      "source_object_id": "29683",
      "company_name": "CodeViz",
      "program": "Y Combinator",
      "cohort": "Summer 2024",
      "official_profile_url": "https://www.ycombinator.com/companies/codeviz",
      "source_snapshot_date": "2026-09-18",
      "professional_signal": "Prior Tesla engineering roles.",
      "professional_signal_category": "prior_engineering_roles",
      "professional_signal_category_label": "prior_engineering_roles",
      "source_excerpt_quote": "founded by two ex-Tesla engineers",
      "source_excerpt_quote_word_count": 5,
      "source_excerpt_redacted": false,
      "description_sha256": "fa229bc2755218bcc4a1a5d9b9b11af0989227dca43b72af9dc6dad8d5522595",
      "supports": "The current public company description reports this prior professional or operating history.",
      "does_not_support": "Employment verification, current role, founder quality, product quality, market fit, causal performance, demographics or personal-contact information."
    },
    {
      "company_id": "yc:29635",
      "original_membership_id": "yc:Summer 2024:29635",
      "source_object_id": "29635",
      "company_name": "DigitalCarbon",
      "program": "Y Combinator",
      "cohort": "Summer 2024",
      "official_profile_url": "https://www.ycombinator.com/companies/digitalcarbon",
      "source_snapshot_date": "2026-09-18",
      "professional_signal": "First and second hires at prior YC company AssemblyAI.",
      "professional_signal_category": "prior_company_and_ai_experience",
      "professional_signal_category_label": "Description names prior company and AI experience.",
      "source_excerpt_quote": "first and second hires at a previous YC company AssemblyAI",
      "source_excerpt_quote_word_count": 10,
      "source_excerpt_redacted": false,
      "description_sha256": "d9acd40c3a68c3a42202906865e52850385b37bb0ac04900fe774112d1c918cb",
      "supports": "The current public company description reports this prior professional or operating history.",
      "does_not_support": "Employment verification, current role, founder quality, product quality, market fit, causal performance, demographics or personal-contact information."
    },
    {
      "company_id": "yc:29841",
      "original_membership_id": "yc:Summer 2024:29841",
      "source_object_id": "29841",
      "company_name": "Elayne",
      "program": "Y Combinator",
      "cohort": "Summer 2024",
      "official_profile_url": "https://www.ycombinator.com/companies/elayne",
      "source_snapshot_date": "2026-09-18",
      "professional_signal": "Investor and repeat-founder history.",
      "professional_signal_category": "prior_domain_and_founder_history",
      "professional_signal_category_label": "Description names prior domain and founder history.",
      "source_excerpt_quote": "former large-cap investor … Rebecca, a repeat fintech and mental health founder",
      "source_excerpt_quote_word_count": 12,
      "source_excerpt_redacted": false,
      "description_sha256": "8b4abf028b39d156d96011bb9bf11dd0881ef6a1200ea56b850f6cf9543498fd",
      "supports": "The current public company description reports this prior professional or operating history.",
      "does_not_support": "Employment verification, current role, founder quality, product quality, market fit, causal performance, demographics or personal-contact information."
    },
    {
      "company_id": "yc:29768",
      "original_membership_id": "yc:Summer 2024:29768",
      "source_object_id": "29768",
      "company_name": "Ember Robotics",
      "program": "Y Combinator",
      "cohort": "Summer 2024",
      "official_profile_url": "https://www.ycombinator.com/companies/ember-robotics",
      "source_snapshot_date": "2026-09-18",
      "professional_signal": "Prior Tesla Autopilot engineering roles.",
      "professional_signal_category": "prior_engineering_roles",
      "professional_signal_category_label": "prior_engineering_roles",
      "source_excerpt_quote": "Founded by former Tesla Autopilot engineers",
      "source_excerpt_quote_word_count": 6,
      "source_excerpt_redacted": false,
      "description_sha256": "96d3cc36a21f8d9f4e907e5dbca37ff09dc543f91a614d26ad0468f22fc44e20",
      "supports": "The current public company description reports this prior professional or operating history.",
      "does_not_support": "Employment verification, current role, founder quality, product quality, market fit, causal performance, demographics or personal-contact information."
    },
    {
      "company_id": "yc:33342",
      "original_membership_id": "yc:Summer 2026:33342",
      "source_object_id": "33342",
      "company_name": "Nex",
      "program": "Y Combinator",
      "cohort": "Summer 2026",
      "official_profile_url": "https://www.ycombinator.com/companies/nex",
      "source_snapshot_date": "2026-09-18",
      "professional_signal": "Ex-HubSpotters who ran three customer platforms.",
      "professional_signal_category": "prior_company_workflow",
      "professional_signal_category_label": "Description names prior company workflow experience.",
      "source_excerpt_quote": "ex-HubSpotters who ran its three largest customer platforms",
      "source_excerpt_quote_word_count": 8,
      "source_excerpt_redacted": false,
      "description_sha256": "28aa2e183f06647024f570bc68c1ba5cbdfb111c1f5f4e8d9b958299e3d245fe",
      "supports": "The current public company description reports this prior professional or operating history.",
      "does_not_support": "Employment verification, current role, founder quality, product quality, market fit, causal performance, demographics or personal-contact information."
    },
    {
      "company_id": "yc:29610",
      "original_membership_id": "yc:Summer 2024:29610",
      "source_object_id": "29610",
      "company_name": "Hamming AI",
      "program": "Y Combinator",
      "cohort": "Summer 2024",
      "official_profile_url": "https://www.ycombinator.com/companies/hamming-ai",
      "source_snapshot_date": "2026-09-18",
      "professional_signal": "Head of Data at Citizen and data science at Tesla.",
      "professional_signal_category": "prior_data_and_ai_roles",
      "professional_signal_category_label": "Description names prior data or AI roles.",
      "source_excerpt_quote": "previously Head of Data at Citizen and Senior Staff Data Scientist at Tesla",
      "source_excerpt_quote_word_count": 13,
      "source_excerpt_redacted": false,
      "description_sha256": "c1912351916beccd34c2bbfdfb1fa72daf5b533951504aca0ae5b4fff873a530",
      "supports": "The current public company description reports this prior professional or operating history.",
      "does_not_support": "Employment verification, current role, founder quality, product quality, market fit, causal performance, demographics or personal-contact information."
    },
    {
      "company_id": "yc:29799",
      "original_membership_id": "yc:Summer 2024:29799",
      "source_object_id": "29799",
      "company_name": "Helium",
      "program": "Y Combinator",
      "cohort": "Summer 2024",
      "official_profile_url": "https://www.ycombinator.com/companies/helium",
      "source_snapshot_date": "2026-09-18",
      "professional_signal": "Prior Uber growth, Alexa LLM, and Meta ML roles.",
      "professional_signal_category": "prior_growth_and_ai_roles",
      "professional_signal_category_label": "Description names prior growth and AI roles.",
      "source_excerpt_quote": "growth experiments at Uber … LLM features for Alexa … worked at Meta building ML",
      "source_excerpt_quote_word_count": 15,
      "source_excerpt_redacted": false,
      "description_sha256": "52a9f11a387cb1aa8a4abd01e70f8e378c399d2578b5d5c3a97bff8adfc6cda4",
      "supports": "The current public company description reports this prior professional or operating history.",
      "does_not_support": "Employment verification, current role, founder quality, product quality, market fit, causal performance, demographics or personal-contact information."
    },
    {
      "company_id": "yc:29715",
      "original_membership_id": "yc:Summer 2024:29715",
      "source_object_id": "29715",
      "company_name": "Kastle",
      "program": "Y Combinator",
      "cohort": "Summer 2024",
      "official_profile_url": "https://www.ycombinator.com/companies/kastle",
      "source_snapshot_date": "2026-09-18",
      "professional_signal": "Redfin product and Verkada engineering roles.",
      "professional_signal_category": "prior_product_and_engineering_roles",
      "professional_signal_category_label": "prior_product_and_engineering_roles",
      "source_excerpt_quote": "founding Product Manager for Redfin’s Mortgage Marketplace … patented Verkada’s motion search system",
      "source_excerpt_quote_word_count": 13,
      "source_excerpt_redacted": false,
      "description_sha256": "6b491c91a451c20d6d4ae33b7251aac335792e3bcf22a5a7b680a89e061b7986",
      "supports": "The current public company description reports this prior professional or operating history.",
      "does_not_support": "Employment verification, current role, founder quality, product quality, market fit, causal performance, demographics or personal-contact information."
    },
    {
      "company_id": "yc:29820",
      "original_membership_id": "yc:Summer 2024:29820",
      "source_object_id": "29820",
      "company_name": "Kontigo",
      "program": "Y Combinator",
      "cohort": "Summer 2024",
      "official_profile_url": "https://www.ycombinator.com/companies/kontigo",
      "source_snapshot_date": "2026-09-18",
      "professional_signal": "Named prior fintech employers and founding-team scaling history.",
      "professional_signal_category": "team_prior_roles",
      "professional_signal_category_label": "Team description names prior professional roles or operating backgrounds.",
      "source_excerpt_quote": "founding team has built and scaled fintechs in Latam, and it’s ex-Venmo, Nubank, Rappi, MercadoLibre, Ualá, Platzi, and Yuno.",
      "source_excerpt_quote_word_count": 19,
      "source_excerpt_redacted": false,
      "description_sha256": "27d61091e92bd0afed037d4067bf0f8bfdcbbfdc22e3457fbfe56ffc46656157",
      "supports": "The current public company description reports this prior professional or operating history.",
      "does_not_support": "Employment verification, current role, founder quality, product quality, market fit, causal performance, demographics or personal-contact information."
    },
    {
      "company_id": "yc:29685",
      "original_membership_id": "yc:Summer 2024:29685",
      "source_object_id": "29685",
      "company_name": "Lore",
      "program": "Y Combinator",
      "cohort": "Summer 2024",
      "official_profile_url": "https://www.ycombinator.com/companies/joinlore",
      "source_snapshot_date": "2026-09-18",
      "professional_signal": "Ex-Google Photos/AI engineering history.",
      "professional_signal_category": "prior_company_roles",
      "professional_signal_category_label": "Description names prior company roles or employers.",
      "source_excerpt_quote": "Founded by a team of ex-Google Photos and AI engineers",
      "source_excerpt_quote_word_count": 10,
      "source_excerpt_redacted": false,
      "description_sha256": "8c402e6eaaf4d3e70e98e05c820f2325b4f53dd0da1fab3e5dfe7f66e8ec49e1",
      "supports": "The current public company description reports this prior professional or operating history.",
      "does_not_support": "Employment verification, current role, founder quality, product quality, market fit, causal performance, demographics or personal-contact information."
    },
    {
      "company_id": "yc:30690",
      "original_membership_id": "yc:Summer 2025:30690",
      "source_object_id": "30690",
      "company_name": "Flai",
      "program": "Y Combinator",
      "cohort": "Summer 2025",
      "official_profile_url": "https://www.ycombinator.com/companies/flai",
      "source_snapshot_date": "2026-09-18",
      "professional_signal": "Named prior voice-AI, Uber infrastructure and Netflix data work.",
      "professional_signal_category": "team_prior_workflow",
      "professional_signal_category_label": "Description names a team’s prior operating workflow.",
      "source_excerpt_quote": "voice AI products at HappyRobot … infrastructure at Uber for millions of users … data science at Netflix",
      "source_excerpt_quote_word_count": 18,
      "source_excerpt_redacted": false,
      "description_sha256": "9209d55c0cde933be03d8b8c8c6ccd0b52433cf1aa4e25acc9b4402aaeeb094b",
      "supports": "The current public company description reports this prior professional or operating history.",
      "does_not_support": "Employment verification, current role, founder quality, product quality, market fit, causal performance, demographics or personal-contact information."
    },
    {
      "company_id": "yc:30754",
      "original_membership_id": "yc:Summer 2025:30754",
      "source_object_id": "30754",
      "company_name": "Locata",
      "program": "Y Combinator",
      "cohort": "Summer 2025",
      "official_profile_url": "https://www.ycombinator.com/companies/locata",
      "source_snapshot_date": "2026-09-18",
      "professional_signal": "Meta Reality Labs, Stanford Medicine, and Google engineering/research roles.",
      "professional_signal_category": "prior_ai_research_and_engineering",
      "professional_signal_category_label": "Description names prior AI research or engineering roles.",
      "source_excerpt_quote": "senior software engineer at Meta’s Reality Labs … AI research at Stanford Medicine … software engineer at Google",
      "source_excerpt_quote_word_count": 18,
      "source_excerpt_redacted": false,
      "description_sha256": "ea2271d160598fdfd78145d31e16cd658de4eccc3b4bb7aba548393de97c53b3",
      "supports": "The current public company description reports this prior professional or operating history.",
      "does_not_support": "Employment verification, current role, founder quality, product quality, market fit, causal performance, demographics or personal-contact information."
    },
    {
      "company_id": "yc:30763",
      "original_membership_id": "yc:Summer 2025:30763",
      "source_object_id": "30763",
      "company_name": "Rebulk",
      "program": "Y Combinator",
      "cohort": "Summer 2025",
      "official_profile_url": "https://www.ycombinator.com/companies/rebulk",
      "source_snapshot_date": "2026-09-18",
      "professional_signal": "Supply-chain product and Tropic/AI startup roles.",
      "professional_signal_category": "prior_supply_chain_product_role",
      "professional_signal_category_label": "Description names prior supply-chain product work.",
      "source_excerpt_quote": "led product at a Series A supply chain software startup … companies moving and managing bulk commodities",
      "source_excerpt_quote_word_count": 17,
      "source_excerpt_redacted": false,
      "description_sha256": "165283c4f675f476b68cbd8e47884d996513f95695e1dd75a95651823165d54a",
      "supports": "The current public company description reports this prior professional or operating history.",
      "does_not_support": "Employment verification, current role, founder quality, product quality, market fit, causal performance, demographics or personal-contact information.",
      "source_excerpt_omissions": "Ellipses separate verbatim fragments in original order."
    },
    {
      "company_id": "yc:30724",
      "original_membership_id": "yc:Summer 2025:30724",
      "source_object_id": "30724",
      "company_name": "Risely AI",
      "program": "Y Combinator",
      "cohort": "Summer 2025",
      "official_profile_url": "https://www.ycombinator.com/companies/risely-ai",
      "source_snapshot_date": "2026-09-18",
      "professional_signal": "Salesforce Education Cloud product history.",
      "professional_signal_category": "prior_product_workflow",
      "professional_signal_category_label": "Description names prior product workflow.",
      "source_excerpt_quote": "previously built Salesforce’s Education Cloud … Student Information System widely used across higher education.",
      "source_excerpt_quote_word_count": 14,
      "source_excerpt_redacted": false,
      "description_sha256": "7ec01b641072ee2fa9120278e352eda9d898a07a1f0bfbdb392a94f0f64a8a89",
      "supports": "The current public company description reports this prior professional or operating history.",
      "does_not_support": "Employment verification, current role, founder quality, product quality, market fit, causal performance, demographics or personal-contact information.",
      "source_excerpt_omissions": "Ellipses separate verbatim fragments in original order."
    },
    {
      "company_id": "yc:33606",
      "original_membership_id": "yc:Summer 2026:33606",
      "source_object_id": "33606",
      "company_name": "Billow AI Labs",
      "program": "Y Combinator",
      "cohort": "Summer 2026",
      "official_profile_url": "https://www.ycombinator.com/companies/billow-ai-labs",
      "source_snapshot_date": "2026-09-18",
      "professional_signal": "Repeat founders and accounting/ERP operating experience.",
      "professional_signal_category": "repeat_founder_and_scale",
      "professional_signal_category_label": "Description names repeat-founder history and company scale.",
      "source_excerpt_quote": "Built by repeat founders … Joan built and exited an accounting/ERP platform",
      "source_excerpt_quote_word_count": 12,
      "source_excerpt_redacted": false,
      "description_sha256": "b603cc94deac6a3895c330b500d40e80e49b0384ca3d1e52a9daa4ff5e48380d",
      "supports": "The current public company description reports this prior professional or operating history.",
      "does_not_support": "Employment verification, current role, founder quality, product quality, market fit, causal performance, demographics or personal-contact information."
    },
    {
      "company_id": "yc:31258",
      "original_membership_id": "yc:Summer 2026:31258",
      "source_object_id": "31258",
      "company_name": "Dream",
      "program": "Y Combinator",
      "cohort": "Summer 2026",
      "official_profile_url": "https://www.ycombinator.com/companies/dream",
      "source_snapshot_date": "2026-09-18",
      "professional_signal": "X/xAI, Vexcel and AWS work.",
      "professional_signal_category": "prior_ai_roles",
      "professional_signal_category_label": "Description names prior AI roles.",
      "source_excerpt_quote": "worked at X/xAI and built aerial damage-detection vision at Vexcel Imaging. Alexander worked at AWS and trained edge-camera models",
      "source_excerpt_quote_word_count": 19,
      "source_excerpt_redacted": false,
      "description_sha256": "afb2195db8e9c9df8e1cb3e042f2aa5b1599d88b1f772832780be36fcda7411e",
      "supports": "The current public company description reports this prior professional or operating history.",
      "does_not_support": "Employment verification, current role, founder quality, product quality, market fit, causal performance, demographics or personal-contact information."
    },
    {
      "company_id": "yc:31582",
      "original_membership_id": "yc:Summer 2026:31582",
      "source_object_id": "31582",
      "company_name": "Edgerun",
      "program": "Y Combinator",
      "cohort": "Summer 2026",
      "official_profile_url": "https://www.ycombinator.com/companies/edgerun",
      "source_snapshot_date": "2026-09-18",
      "professional_signal": "Prior co-founder and aerospace-company history.",
      "professional_signal_category": "prior_founder_and_aerospace_roles",
      "professional_signal_category_label": "Description names prior founder and aerospace roles.",
      "source_excerpt_quote": "previously co-founded Durin (autonomous mining robotics) and worked at Stoke Space (at 19) and Hadrian.",
      "source_excerpt_quote_word_count": 15,
      "source_excerpt_redacted": false,
      "description_sha256": "8267844e480927a05ce960d0fce08b1e143aff2a5591e4b60e63b106fd841ace",
      "supports": "The current public company description reports this prior professional or operating history.",
      "does_not_support": "Employment verification, current role, founder quality, product quality, market fit, causal performance, demographics or personal-contact information."
    },
    {
      "company_id": "yc:30914",
      "original_membership_id": "yc:Summer 2026:30914",
      "source_object_id": "30914",
      "company_name": "Sunflower",
      "program": "Y Combinator",
      "cohort": "Summer 2026",
      "official_profile_url": "https://www.ycombinator.com/companies/sunflower",
      "source_snapshot_date": "2026-09-18",
      "professional_signal": "Prior growth leadership at Rupa.",
      "professional_signal_category": "prior_growth_role",
      "professional_signal_category_label": "Description names prior growth role.",
      "source_excerpt_quote": "founded by Koby who previously led Growth at Rupa from $5M to $75M/year.",
      "source_excerpt_quote_word_count": 13,
      "source_excerpt_redacted": false,
      "description_sha256": "bfd5c1183fad8aefc8ddc15c3d4fe00d0094b95062d535cbf19c53f8db7de798",
      "supports": "The current public company description reports this prior professional or operating history.",
      "does_not_support": "Employment verification, current role, founder quality, product quality, market fit, causal performance, demographics or personal-contact information."
    },
    {
      "company_id": "yc:29999",
      "original_membership_id": "yc:Winter 2025:29999",
      "source_object_id": "29999",
      "company_name": "Onlook",
      "program": "Y Combinator",
      "cohort": "Winter 2025",
      "official_profile_url": "https://www.ycombinator.com/companies/onlook",
      "source_snapshot_date": "2026-09-18",
      "professional_signal": "Design/growth leadership plus Amazon and ServiceNow engineering.",
      "professional_signal_category": "prior_product_and_engineering_roles",
      "professional_signal_category_label": "prior_product_and_engineering_roles",
      "source_excerpt_quote": "former Head of Growth … ex-Amazon and ex-ServiceNow engineer",
      "source_excerpt_quote_word_count": 9,
      "source_excerpt_redacted": false,
      "description_sha256": "7877129605d047aec8e63b7aec853ab48f191c901365de53bf20d396007e1f8b",
      "supports": "The current public company description reports this prior professional or operating history.",
      "does_not_support": "Employment verification, current role, founder quality, product quality, market fit, causal performance, demographics or personal-contact information."
    },
    {
      "company_id": "yc:31051",
      "original_membership_id": "yc:Winter 2026:31051",
      "source_object_id": "31051",
      "company_name": "Corvera",
      "program": "Y Combinator",
      "cohort": "Winter 2026",
      "official_profile_url": "https://www.ycombinator.com/companies/corvera",
      "source_snapshot_date": "2026-09-18",
      "professional_signal": "2x founder, ex-CEO, Google and product roles.",
      "professional_signal_category": "repeat_founder_and_prior_roles",
      "professional_signal_category_label": "Description names repeat-founder and prior roles.",
      "source_excerpt_quote": "2x Founder; ex-CEO at Better Nature … ex-Google Data & AI Lead … ex-Head of Product at Rosemark",
      "source_excerpt_quote_word_count": 18,
      "source_excerpt_redacted": false,
      "description_sha256": "40577b91ddfa526f4ad8adf74c9684733dc7955773a48abbed19d326a3337d13",
      "supports": "The current public company description reports this prior professional or operating history.",
      "does_not_support": "Employment verification, current role, founder quality, product quality, market fit, causal performance, demographics or personal-contact information."
    },
    {
      "company_id": "yc:31186",
      "original_membership_id": "yc:Winter 2026:31186",
      "source_object_id": "31186",
      "company_name": "End Close",
      "program": "Y Combinator",
      "cohort": "Winter 2026",
      "official_profile_url": "https://www.ycombinator.com/companies/end-close",
      "source_snapshot_date": "2026-09-18",
      "professional_signal": "Reconciliation leadership at Modern Treasury.",
      "professional_signal_category": "prior_finance_workflow",
      "professional_signal_category_label": "Description names prior finance workflow experience.",
      "source_excerpt_quote": "spent the last 6 years building the reconciliation org at Modern Treasury",
      "source_excerpt_quote_word_count": 12,
      "source_excerpt_redacted": false,
      "description_sha256": "e4e911b9f71c9098c3f7c35678e55a02180fb2a7888f4aa34074bc9d333c70c6",
      "supports": "The current public company description reports this prior professional or operating history.",
      "does_not_support": "Employment verification, current role, founder quality, product quality, market fit, causal performance, demographics or personal-contact information."
    },
    {
      "company_id": "yc:31062",
      "original_membership_id": "yc:Winter 2026:31062",
      "source_object_id": "31062",
      "company_name": "Hlabs",
      "program": "Y Combinator",
      "cohort": "Winter 2026",
      "official_profile_url": "https://www.ycombinator.com/companies/hlabs",
      "source_snapshot_date": "2026-09-18",
      "professional_signal": "2x YC founder and prior CEO tenure.",
      "professional_signal_category": "repeat_founder_and_company_history",
      "professional_signal_category_label": "Description names repeat-founder and prior company history.",
      "source_excerpt_quote": "a second time YC founder … ran Mystic as CEO for 6 years.",
      "source_excerpt_quote_word_count": 13,
      "source_excerpt_redacted": false,
      "description_sha256": "1e308dfc6b7d28e72681ead2246aff23b981718d43c41405acda16b2fd0e9a4f",
      "supports": "The current public company description reports this prior professional or operating history.",
      "does_not_support": "Employment verification, current role, founder quality, product quality, market fit, causal performance, demographics or personal-contact information."
    },
    {
      "company_id": "yc:31171",
      "original_membership_id": "yc:Winter 2026:31171",
      "source_object_id": "31171",
      "company_name": "Overshoot",
      "program": "Y Combinator",
      "cohort": "Winter 2026",
      "official_profile_url": "https://www.ycombinator.com/companies/overshoot",
      "source_snapshot_date": "2026-09-18",
      "professional_signal": "Uber/Meta systems engineering and a previously built-and-sold software product.",
      "professional_signal_category": "prior_founder_and_technical_roles",
      "professional_signal_category_label": "Description names prior founder and technical roles.",
      "source_excerpt_quote": "built low-latency high-throughput pricing systems (surge) at Uber and inference engines at Meta … built and sold a software product",
      "source_excerpt_quote_word_count": 20,
      "source_excerpt_redacted": false,
      "description_sha256": "b41904319b8bee8bfd19af65b7ee18d1fd9d6be17a7162431eb83265631a23e5",
      "supports": "The current public company description reports this prior professional or operating history.",
      "does_not_support": "Employment verification, current role, founder quality, product quality, market fit, causal performance, demographics or personal-contact information."
    }
  ],
  "public_limit": "Exact source excerpts are capped at 20 words per company. Original full bios and contact text remain local research inputs and are not redistributed.",
  "rerun_note": "A later directory rerun may differ as public descriptions, rows or cohorts change."
}
