Filing excerpt
information indicating that the DAU growth rate onAugust 17, 2026 was estimated to be 27.4% relative to the comparable day of the prior year and therehad been similar estimated growth rates for the previous days in August.
The company inadvertently disclosed a preliminary estimate of 27.4% year-over-year growth in Daily Active Users (DAUs), indicating rapid user base expansion.
Filing excerpt
information indicating that the DAU growth rate onAugust 17, 2026 was estimated to be 27.4% relative to the comparable day of the prior year and therehad been similar estimated growth rates for the previous days in August.
What this signalsFilings often name leadership changes, deals and spending plans.
sec-8kbacklogGrowthGet every 8-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 8-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-8k 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/1212d7a3-9cbb-45ab-97f0-fad4a61ac3d8 returns this record as JSON. POST /v1/companies/enrich returns every signal for duolingo.com.
{
"signal_id": "1212d7a3-9cbb-45ab-97f0-fad4a61ac3d8",
"signal_type": "sec-8k",
"signal_subtype": "backlogGrowth",
"detected_at": "2026-08-25T07:04:23.412+00:00",
"company": {
"name": "Duolingo",
"domain": "duolingo.com"
},
"data": {
"detail": "The company inadvertently disclosed a preliminary estimate of 27.4% year-over-year growth in Daily Active Users (DAUs), indicating rapid user base expansion. This level of growth creates pressure to scale infrastructure, analytics, and user engagement systems to maintain performance and capitalize on momentum.",
"metrics": {
"pct": 27.4,
"timeframe": "current_quarter",
"pct_context": "Estimated year-over-year DAU growth rate on August 17, 2026"
},
"summary": "Duolingo accidentally reveals strong DAU growth of 27.4% in August",
"excerpts": "information indicating that the DAU growth rate onAugust 17, 2026 was estimated to be 27.4% relative to the comparable day of the prior year and therehad been similar estimated growth rates for the previous days in August.",
"relevance": 0.8,
"sentiment": "positive",
"confidence": "high",
"source_url": "https://www.sec.gov/Archives/edgar/data/1562088/000162828026057818/duol-20260818.htm",
"filing_date": "2026-08-18",
"filing_year": 2026,
"fiscal_year_end": "08/18",
"sales_relevance": "Capacity/fulfillment needs",
"signal_category": "revenue"
}
}
curl https://signals.autobound.ai/v1/signals/1212d7a3-9cbb-45ab-97f0-fad4a61ac3d8 \
-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.