The company is actively hiring to support its growth and product development, with engineers making up nearly half the workforce.
Filing excerpt
Our team, which as of December 31, 2025, consisted of more than 900 passionate employees, including more than 430 engineers, aims to build the most sophisticated education platform in the world.
What this signalsFilings often name leadership changes, deals and spending plans.
Technologies
sec-10kmarketExpansionGet every 10-K signal for Duolingo and the companies you sell to, in the tools you already use.
Connect Autobound to Claude, Claude Code or Cursor with MCP. Then ask: “What changed at Duolingo this week?”
The Signal API returns 10-K signals for any list of companies as JSON, for your CRM, warehouse or app.
Sign up and spend your free credits on the companies you sell to.
This page shows a preview. The full sec-10k record in the Signal API and MCP can also have these 8 fields. Some fields are empty for some signals.
Company
linkedin_urlValue in the APIindustriesValue in the APIemployee_count_lowValue in the APIemployee_count_highValue in the APIrevenueValue in the APIdescriptionValue in the APISignal
signal_nameValue in the APIassociationValue in the APIGET /v1/signals/f738b6fa-8c9b-4249-8e7d-28e0fa898a56 returns this record as JSON. POST /v1/companies/enrich returns every signal for duolingo.com.
{
"signal_id": "f738b6fa-8c9b-4249-8e7d-28e0fa898a56",
"signal_type": "sec-10k",
"signal_subtype": "marketExpansion",
"detected_at": "2026-03-03T06:11:06.935+00:00",
"company": {
"name": "Duolingo",
"domain": "duolingo.com"
},
"data": {
"detail": "The company is actively hiring to support its growth and product development, with engineers making up nearly half the workforce. This signals budget for recruitment platforms, HR software, and developer tools to attract, manage, and retain top talent.",
"metrics": {
"timeframe": "next_year"
},
"summary": "Duolingo expects continued headcount growth, with over 430 engineers on a 900+ person team.",
"excerpts": "Our team, which as of December 31, 2025, consisted of more than 900 passionate employees, including more than 430 engineers, aims to build the most sophisticated education platform in the world.",
"relevance": 0.8,
"sentiment": "positive",
"confidence": "high",
"source_url": "https://www.sec.gov/Archives/edgar/data/1562088/000162828026012494/duol-20251231.htm",
"filing_date": "2026-02-26",
"filing_year": 2026,
"fiscal_year_end": "12/31",
"sales_relevance": "Scaling infrastructure needed",
"signal_category": "market",
"technologies_mentioned": [
"AI",
"data analytics"
]
}
}
curl https://signals.autobound.ai/v1/signals/f738b6fa-8c9b-4249-8e7d-28e0fa898a56 \
-H "X-API-KEY: $AUTOBOUND_API_KEY"curl -X POST https://signals.autobound.ai/v1/companies/enrich \
-H "X-API-KEY: $AUTOBOUND_API_KEY" \
-H "Content-Type: application/json" \
-d '{"domain":"duolingo.com","limit":20}'Long text fields are shortened on this page.
Looking up one signal by its id is free. Enrich costs 2 credits per signal returned; a call with no results is free.