VON AHN LUIS (President & CEO, Co-Founder) sold 46.68K shares of DUOLINGO, INC. on the open market

Open‑market sale worth $7.03M. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 3 sales

VON AHN LUIS

Filed: 9/28/2026ACC: 0001628280-26-063709

InsiderVON AHN LUISCIK 1829259

→

IssuerDUOLINGO, INC.CIK 1562088

DirectorOfficer10% Owner· President & CEO, Co-Founder

Since Jul 2021

-46.68K

Net shares

Net seller

$7.03M

Total sold

Open market trades

0B · 3S

Total transactions

93.36K acquired · 140.05K disposed

Non-Derivative Transactions4

Class A Common Stock

Direct

C · Conversion

+46.68K

Price / share

$38.08

Trade value

$1.78M

% of position

New position

9/24/2026

0.00→46.68K

Class A Common Stock

Direct

S · Sale

−38.76K

Price / share

$150.45

Trade value

$5.83M

% of position

83.0%

9/24/2026

46.68K→7.92K

Class A Common Stock

Direct

S · Sale

−7.02K

Price / share

$151.42

Trade value

$1.06M

% of position

88.6%

9/24/2026

7.92K→900.00

Class A Common Stock

Direct

S · Sale

−900.00

Price / share

$152.29

Trade value

$137.06K

% of position

New position

9/24/2026

900.00→0.00

Total

Net shares

+0.00

Net value

-$5.25M

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Class A Common Stock Direct	9/24/2026	C · Conversion	+46.68K	$38.08	$1.78M	New position	0.00	46.68K
Class A Common Stock Direct	9/24/2026	S · Sale	−38.76K	$150.45	$5.83M	83.0%	46.68K	7.92K
Class A Common Stock Direct	9/24/2026	S · Sale	−7.02K	$151.42	$1.06M	88.6%	7.92K	900.00
Class A Common Stock Direct	9/24/2026	S · Sale	−900.00	$152.29	$137.06K	New position	900.00	0.00
Total			+0.00		-$5.25M

Derivative Transactions3

Stock Option (Right to Buy)

Direct

M · Option Exercise

Converts to

Class B Common Stock

46.68K shares

−46.68K

Strike price

38.08

Held after

110.05K

Exercisable

—

9/24/2026

Class B Common Stock

Direct

C · Conversion

Converts to

Class A Common Stock

46.68K shares

+46.68K

Strike price

Held after

3.41M

Exercisable

—

9/24/2026

Class B Common Stock

Direct

C · Conversion

Converts to

Class A Common Stock

46.68K shares

−46.68K

Strike price

Held after

3.37M

Exercisable

—

9/24/2026

Security	Converts To	Date	Type	Shares	Strike Price	Exercisable	Held After
Stock Option (Right to Buy) Direct	Class B Common Stock46.68K shares	9/24/2026	M · Option Exercise	−46.68K	38.08	—	110.05K
Class B Common Stock Direct	Class A Common Stock46.68K shares	9/24/2026	C · Conversion	+46.68K		—	3.41M
Class B Common Stock Direct	Class A Common Stock46.68K shares	9/24/2026	C · Conversion	−46.68K		—	3.37M