Duolingo, Inc. · Conversion · Class B Common Stock

What does this filing report?

An SEC Form 4 filing for Duolingo, Inc. records a conversion involving Class B Common Stock on October 7, 2026. The reported quantity was 110,046. The filing date is October 9, 2026. This is one transaction record; amounts are not allocated among any joint reporting owners.

The acquisition category describes how securities were received. It does not by itself establish a cash purchase of common stock. Read the transaction code definitionsand the original filing before interpreting the amounts.

Derivative terms

Underlying security

Class A Common Stock

Underlying quantity

110,046

Conversion / exercise price

Not reported

Exercise date

Not reported

Expiration date

Not reported

Filing footnotes & remarks

F1

The sale was effected pursuant to the Reporting Person's Rule 10b5-1 trading plan adopted on June 2, 2026.

F2

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 $150.00 to $150.99, 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.

F3

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 $151.00 to $151.99, 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.

F4

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 $152.00 to $152.99, 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.

F5

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 $153.00 to $153.61, 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.

F6

The options are fully vested and exercisable.

F7

Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock in connection with: (i) any transfer, whether or not for value, except for certain permitted transfers further described in the Issuer's amended and restated certificate of incorporation, (ii) such time as the aggregate number of shares of Class B Common Stock outstanding ceases to represent 5% of the aggregate number of shares of Common Stock outstanding, and (iii) the death of the Reporting Person.

Footnotes are reproduced as plain text from the current source filing. For the full context, read the original SEC filing.