Stephen C. Chen - 29 Dec 2025 Form 4 Insider Report for Duolingo, Inc. (DUOL)

Role
General Counsel
Signature
/s/ Stephen C. Chen
Issuer symbol
DUOL
Transactions as of
29 Dec 2025
Net transactions value
+$25,956
Form type
4
Filing time
30 Dec 2025, 17:12:12 UTC
Previous filing
19 Nov 2025
Next filing
20 Feb 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Chen Stephen C. General Counsel C/O DUOLINGO, INC., 5900 PENN AVENUE, PITTSBURGH /s/ Stephen C. Chen 30 Dec 2025 0001869758

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction DUOL Class A Common Stock Options Exercise $25,956 +1,800 +5.7% $14.42 33,342 29 Dec 2025 Direct

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction DUOL Stock Option (Right to Buy) Options Exercise $0 -1,800 -72% $0.000000 706 29 Dec 2025 Class A Common Stock 1,800 $14.42 Direct F1
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 The shares subject to the option are fully vested and exercisable.