Duolingo 4: Shelton James H bought 5,000 shares of Class A Common Stock… (Mar 4, 2026)

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-03-03 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: Duolingo, Inc. (DUOL) CIK: 0001562088 --- Reporting Owner --- Name: Shelton James H CIK: 0001342646 Role: Director --- Non-Derivative Transactions --- [Transaction #1] Security: Class A Common Stock Date: 2026-03-03 | Code: P (Open market purchase) Shares: +5,000 | Price: $99.76 Total Value: $498,792.00 Shares Owned After: 9,632 | Ownership: D (Direct) Footnotes: [F1] The price reported in Column 4 is a weighted average purchase price calculated by the broker executing the purchases. These shares were purchased in multiple transactions at prices ranging from $99.07 to $99.96, 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 purchased at each respective price within the range set forth in this footnote. --- Footnotes (Complete Index) --- F1: The price reported in Column 4 is a weighted average purchase price calculated by the broker executing the purchases. These shares were purchased in multiple transactions at prices ranging from $99.07 to $99.96, 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 purchased at each respective price within the range set forth in this footnote. --- Signature --- /s/ /s/ Stephen Chen, as Attorney-in-Fact for James H. Shelton (2026-03-04)