Severin Hacker - Dec 8, 2021 Form 4 Insider Report for Duolingo, Inc. (DUOL)

Role: Chief Technology Officer,, Director, Co-Founder, 10%+ Owner
Signature: /s/ Stephen Chen, as Attorney-in-Fact for Severin Hacker
Stock symbol: DUOL
Transactions as of: Dec 8, 2021
Transactions value $: -$3,960
Form type: 4
Date filed: 12/10/2021, 04:27 PM
Previous filing: Nov 17, 2021
Next filing: Feb 10, 2022

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	DUOL	Class A Common Stock	Options Exercise	$0	+108		$0.00	108	Dec 8, 2021	Direct	F1
transaction	DUOL	Class A Common Stock	Sale	-$3.96K	-36	-33.33%	$110.01	72	Dec 8, 2021	Direct	F2

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	Restricted Stock Units	Options Exercise	$0	-108	-100%	$0.00^*	0	Dec 8, 2021	Class A Common Stock	108		Direct	F1

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Each restricted stock unit ("RSU") represents a contingent right to receive one (1) share of the Issuer's Class A Common Stock. 100% of the RSUs were immediately vested as of August 15, 2021 and settled on December 8, 2021.
F2	Shares were sold solely to satisfy tax withholding obligations in connection with the vesting of RSUs and delivery of shares.