LYTIR

Company · DUOL

Duolingo, Inc.

Nasdaq's symbol directory lists DUOL on Nasdaq as “Duolingo, Inc. - Class A Common Stock”.

In the 12 months to Nov 8, 2026: insiders sold on 13 occasions ($39.7M); 9 planned-sale notices; 5 filings by holders of 5% or more; 1 company report (Form 8-K, since May 26, 2026).

All insider filings at the SEC · Appeared in No. 19, No. 18

Insider purchases and sales, by month (last 12 months)Insider purchases: $0 in total; Insider sales: $39.7M in total.Aug: Insider sales $874KSep: Insider sales $20.1MOct: Insider sales $16.7MNov: Insider sales $2.0MDecJanFebMarAprMayJunJulAugSepOctNov
Insider purchases above the line: $0Insider sales below: $39.7M
Dollar value of open-market purchases and sales reported on SEC Form 4, by the month traded. Sales include pre-arranged 10b5-1 plan sales.

Insider trades · SEC Form 4

Those inside the hall

Open-market purchases and sales only. Legs one person filed for one day are combined.

Who traded

  1. Luis von Ahn, President & CEO, Co-Founder sold on 5 days all under a 10b5-1 plan latest Oct 7, 2026 sold $34.1M
  2. William B. Gordon sold on 2 days all under a 10b5-1 plan latest Nov 2, 2026 sold $2.8M
  3. Stephen C. Chen, General Counsel sold on 3 days 2 of them under a 10b5-1 plan latest Nov 4, 2026 sold $2.0M
  4. Glance Natalie, Chief Engineering Officer sold on 2 days all under a 10b5-1 plan latest Aug 18, 2026 sold $567K
  5. Meese Robert, Chief Business Officer sold on 1 day latest Aug 17, 2026 sold $175K
Every trade (13)
  1. SELLStephen C. Chen, General Counsel sold Nov 4, 2026 3,700 shares 10b5-1 plan (scheduled) filing $648K
  2. SELLWilliam B. Gordon sold Nov 2, 2026 10,000 shares 8 legs combined 10b5-1 plan (scheduled) filing $1.4M
  3. SELLLuis von Ahn, President & CEO, Co-Founder sold Oct 7, 2026 110,046 shares 4 legs combined 10b5-1 plan (scheduled) filing $16.7M
  4. SELLLuis von Ahn, President & CEO, Co-Founder sold Sep 24, 2026 46,682 shares 3 legs combined 10b5-1 plan (scheduled) filing $7.0M
  5. SELLLuis von Ahn, President & CEO, Co-Founder sold Sep 22, 2026 3,614 shares 2 legs combined 10b5-1 plan (scheduled) filing $549K
  6. SELLLuis von Ahn, President & CEO, Co-Founder sold Sep 21, 2026 37,366 shares 2 legs combined 10b5-1 plan (scheduled) filing $5.6M
  7. SELLLuis von Ahn, President & CEO, Co-Founder sold Sep 16, 2026 28,292 shares 2 legs combined 10b5-1 plan (scheduled) filing $4.3M
  8. SELLStephen C. Chen, General Counsel sold Sep 14, 2026 8,072 shares 2 legs combined 10b5-1 plan (scheduled) filing $1.2M
  9. SELLWilliam B. Gordon sold Sep 8, 2026 10,000 shares 6 legs combined 10b5-1 plan (scheduled) filing $1.5M
  10. SELLGlance Natalie, Chief Engineering Officer sold Aug 18, 2026 1,539 shares 2 legs combined 10b5-1 plan (scheduled) filing $212K
  11. SELLGlance Natalie, Chief Engineering Officer sold Aug 17, 2026 2,751 shares 10b5-1 plan (scheduled) filing $355K
  12. SELLMeese Robert, Chief Business Officer sold Aug 17, 2026 1,354 shares filing $175K
  13. SELLStephen C. Chen, General Counsel sold Aug 17, 2026 1,024 shares filing $132K

Planned sales · SEC Form 144

Notice given

A Form 144 is filed before an insider sells restricted stock. It states an intent; the sale, if it happens, appears later on a Form 4. Every recent notice

  1. STEPHEN CHEN filed Nov 4, 2026 Officer 3,700 shares planned sale date 11/04/2026 filing $474K
  2. LUIS VON AHN ARELLANO filed Oct 7, 2026 Director 110,046 shares planned sale date 10/07/2026 filing $16.3M
  3. LUIS VON AHN ARELLANO filed Sep 24, 2026 Director 46,682 shares planned sale date 09/24/2026 filing $6.8M
  4. LUIS VON AHN ARELLANO filed Sep 22, 2026 Director 3,614 shares planned sale date 09/22/2026 filing $540K
  5. LUIS VON AHN ARELLANO filed Sep 21, 2026 Director 37,366 shares planned sale date 09/21/2026 filing $5.3M
  6. LUIS VON AHN FOUNDATION filed Sep 21, 2026 Director 34,992 shares planned sale date 09/21/2026 filing $5.0M
  7. LUIS VON AHN ARELLANO filed Sep 16, 2026 Director 28,292 shares planned sale date 09/16/2026 filing $4.4M
  8. LUIS VON AHN FOUNDATION filed Sep 16, 2026 Director 19,008 shares planned sale date 09/16/2026 filing $2.9M
  9. STEPHEN CHEN filed Sep 14, 2026 Officer 8,072 shares planned sale date 09/14/2026 filing $1.2M

Large holders · SEC Schedules 13D and 13G

Five percent and over

Anyone who comes to hold more than 5% of a company's voting shares must tell the SEC. A Schedule 13D is filed by a holder who may seek to influence the company; a 13G by one who states it is a passive investor. An amendment updates an earlier filing, and a stake reported as 0% means the holder says it has sold all, or nearly all, of its shares. Every recent 13D and 13G

  1. Vanguard Capital Management filed Oct 30, 2026 Schedule 13G/A passive 1,934,392 shares filing 4.78%
  2. BAILLIE GIFFORD & CO filed Oct 20, 2026 Schedule 13G/A passive 4,554,894 shares filing 11.3%
  3. Von Ahn Luis filed Aug 12, 2026 Schedule 13G/A passive filing 8.2%
  4. AQR Capital Management, LLC filed Aug 12, 2026 Schedule 13G passive 2,332,543 shares filing 5.8%
  5. Vanguard Capital Management filed Jul 31, 2026 Schedule 13G passive 2,054,884 shares filing 5.1%

Company reports · SEC Form 8-K

In its own words

Current reports the company filed with the SEC; most items are due within four business days of the event. Each line lists the report's items by the SEC's own titles; the filing says what happened. Reports collected since May 26, 2026; every 8-K at the SEC.

  1. Results of operations and financial condition filing Nov 3, 2026

Sources: SEC EDGAR (Forms 4, 144 and 8-K) and STOCK Act periodic transaction reports. Filings can be late, amended or wrong at the source; see methodology.