DUOL
Duolingo, Inc. · Technology · Market cap $6.9B
Insiders sold $37.7M net in the last 90 days ·5 sellers, 0 buyers· 9 of 11 sales under Rule 10b5-1 plans· latest Form 4 filed Oct 9, 2026
Insider Buying
$499K
reported purchases (SEC code P)
Insider Selling
$47.5M
reported sales (SEC code S)
Unique Insiders
8
in the rolling window
Latest filing
Oct 14, 2026
von Ahn Luis
Duolingo, Inc. (DUOL) has 48 SEC Form 4 filings (129 transaction rows) in the rolling window, disclosed by 8 distinct insiders. Most recent filing: Oct 14, 2026.
Inside the rolling window, 8 insiders at Duolingo, Inc. reported 1 open-market purchase totaling $499K and 32 open-market sales totaling $47.5M. The most active filer is General Counsel Chen Stephen C. with 8 filings. Insiders have net sold $38.8M over the trailing 6 months. The most recent open-market filing is a sale of 110,046 shares by President & CEO, Co-Founder von Ahn Luis, dated Oct 7, 2026, worth $16.7M.
- Industry:Software - Application
- CEO:Luis Alfonso von Ahn Arellano
- Employees:900
- HQ:Pittsburgh, PA, US
- IPO:2021-07-28
| Source | |||||||
|---|---|---|---|---|---|---|---|
| President & CEO, Co-Founder | Sale | 110,046 | $16.7M | Oct 9 | -8.4% | SEC ↗ | |
| President & CEO, Co-Founder | Sale | 46,682 | $7.0M | Sep 28 | +2.2% | SEC ↗ | |
| President & CEO, Co-Founder | Sale | 37,366 | $5.6M | Sep 23 | -5.9% | SEC ↗ | |
| President & CEO, Co-Founder | Sale | 3,614 | $549K | Sep 23 | -5.9% | SEC ↗ | |
von Ahn LuisFirst filing | President & CEO, Co-Founder | Sale | 28,292 | $4.3M | Sep 19 | — | SEC ↗ |
| General Counsel | Sale | 8,072 | $1.2M | Sep 15 | — | SEC ↗ | |
GORDON WILLIAM BFirst in 6 months | Director | Sale | 10,000 | $1.5M | Sep 10 | — | SEC ↗ |
Glance NatalieFirst in 3 months | Chief Engineering Officer | Sale | 2,751 | $355K | Aug 19 | — | SEC ↗ |
Glance NatalieFirst in 3 months | Chief Engineering Officer | Sale | 1,539 | $212K | Aug 19 | — | SEC ↗ |
Meese RobertFirst in 3 months | Chief Business Officer | Sale | 1,354 | $175K | Aug 19 | — | SEC ↗ |
Chen Stephen C.First in 3 months | General Counsel | Sale | 1,024 | $132K | Aug 19 | — | SEC ↗ |
| Chief Engineering Officer | Sale | 1,929 | $216K | May 19 | — | SEC ↗ | |
| Chief Engineering Officer | Sale | 3,360 | $382K | May 19 | — | SEC ↗ | |
| General Counsel | Sale | 820 | $92K | May 19 | — | SEC ↗ | |
| General Counsel | Sale | 1,977 | $225K | May 19 | — | SEC ↗ | |
| Chief Business Officer | Sale | 1,420 | $159K | May 19 | — | SEC ↗ | |
Shelton James HFirst filing | Director | Purchase | 5,000 | $499K | Mar 4 | — | SEC ↗ |
Skaruppa MatthewFirst in 3 months | Chief Financial Officer | Sale | 1,870 | $206K | Feb 20 | — | SEC ↗ |
Skaruppa MatthewFirst in 3 months | Chief Financial Officer | Sale | 3,986 | $452K | Feb 20 | — | SEC ↗ |
Chen Stephen C.First in 3 months | General Counsel | Sale | 896 | $99K | Feb 20 | — | SEC ↗ |
Chen Stephen C.First in 3 months | General Counsel | Sale | 1,901 | $215K | Feb 20 | — | SEC ↗ |
Glance NatalieFirst in 3 months | Chief Engineering Officer | Sale | 1,741 | $192K | Feb 20 | — | SEC ↗ |
Glance NatalieFirst in 3 months | Chief Engineering Officer | Sale | 3,545 | $402K | Feb 20 | — | SEC ↗ |
Meese RobertFirst in 3 months | Chief Business Officer | Sale | 1,000 | $110K | Feb 20 | — | SEC ↗ |
| Chief Tech Officer, Co-Founder | Sale | 10,000 | $1.7M | Nov 20 | — | SEC ↗ |
Earnings: last 7 quarters
Congress trading DUOL 4 all-time
- RRep. Lisa C. McClainSale$1,001 - $15,0002025-08-13
- RRep. Lisa C. McClainPurchase$1,001 - $15,0002025-08-04
- RRep. Lisa C. McClainOther$1,001 - $15,0002025-06-24
- RRep. Lisa C. McClainPurchase$1,001 - $15,0002025-06-17
STOCK Act disclosures are filed up to 45 days after the trade. Amount is a disclosed range, not an exact figure.
Frequently asked questions
How many SEC Form 4 insider filings does DUOL have?
Duolingo, Inc. (DUOL) has 48 SEC Form 4 filings (129 transaction rows) in the rolling 365-day window, disclosed by 8 distinct insiders. Most recent filing: Oct 14, 2026.
When was the most recent SEC Form 4 filing for DUOL?
The most recent Form 4 filing for DUOL on Tracefour is dated Oct 14, 2026.
Who is the most active insider at DUOL?
The most active SEC Form 4 filer at DUOL in the rolling window is General Counsel Chen Stephen C., with 8 filings.
What is the net insider flow at DUOL over the last 6 months?
Over the trailing 180 days, insiders at DUOL have net sold $38.8M based on SEC Form 4 disclosures.
What is the total insider buy and sell value at DUOL in the current window?
Inside the rolling window, insiders at DUOL bought $499K and sold $47.5M based on SEC Form 4 filings.
Can I get alerts for DUOL insider trading?
Yes. Tracefour sends a free email when a new SEC Form 4 purchase or sale is filed at Duolingo, Inc. (DUOL). Alerts are set per company from the page itself, there is no paid tier, and each email links to the original filing on SEC EDGAR.
Related companies
Duolingo, Inc. is in the Technology sector.