Duolingo, Inc. — Director's Dealing 2025

May 19, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Duolingo, Inc. (DUOL)
CIK: 0001562088
Period of Report: 2025-05-16

Reporting Person: Skaruppa Matthew (Chief Financial Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-05-16	Class A Common Stock	S	900	$526.1596	Disposed	60896	Direct
2025-05-16	Class A Common Stock	S	700	$527.2671	Disposed	60196	Direct
2025-05-16	Class A Common Stock	S	524	$528.6285	Disposed	59672	Direct
2025-05-16	Class A Common Stock	S	849	$529.448	Disposed	58823	Direct
2025-05-16	Class A Common Stock	S	200	$530.495	Disposed	58623	Direct
2025-05-16	Class A Common Stock	S	400	$531.425	Disposed	58223	Direct

Footnotes

F1: The sale was effected pursuant to the Reporting Person's Rule 10b5-1 trading plan adopted on May 22, 2024.

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 $525.84 to $526.75, 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 $526.93 to $527.51, 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 $527.96 to $528.86, 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 $529.07 to $529.77, 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 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 $530.23 to $530.76, 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.

F7: 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 $531.40 to $531.46, 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.