CEO sold ~$155K of DUOL shares in the open market

Past results only. Not a forecast.

Record ID

0001628280-26-062790

Filed / recorded

Sep 19, 2026, 12:25 AM UTC

Added to OQRO

Oct 6, 2026, 7:37 PM UTC

Parser

form4-xml-v2

Data quality

Verified: identifiers matched exactly

Issuer

Duolingo, Inc.

Issuer CIK

1562088

Ticker

DUOL

Reporting person

Ahn Luis von

Relationship

Director, Officer, 10% owner

Officer title

President & CEO, Co-Founder

Security

Class A Common Stock

Table

Non-derivative (Table I)

Transaction date

Sep 16, 2026

Transaction code

S

Shares / units

1,020

Price per share

$151.54

Acquired / disposed

Disposed (D)

Shares owned after

0

Ownership form

Direct

Amendment

No

1. The sale was effected pursuant to the Reporting Person's Rule 10b5-1 trading plan adopted on June 2, 2026.
2. The price reported in Column 4 is a weighted average sale price calculated by the broker executing the sales. These shares were sold in multiple transactions at prices ranging from $151.53 to $152.55, inclusive. The Reporting Person hereby undertakes to provide to the Securities and Exchange Commission staff, the Issuer, or a security holder of the Issuer, upon request, full information regarding the number of shares sold at each respective price within the range set forth in this footnote.