DUOLINGO INC

Ticker: DUOL CUSIP: 26603R106 Class: EQTY

CONGRESS ASSET MANAGEMENT CO /MA's Holding History (CIK: 0000897378)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025

Shares 61,711 Value ($000) $10,830 Avg Close $235.64 Range $166.27 - $353.00

Q3 2025

Shares 59,722 Value ($000) $19,221 Avg Close $334.45 Range $256.63 - $468.00

Q2 2025

Shares 52,941 Value ($000) $21,707 Avg Close $438.78 Range $274.97 - $544.93

Q1 2025

Shares 49,687 Value ($000) $15,430 Avg Close $342.01 Range $263.68 - $441.76

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	61,711	$10,830	$235.64	$166.27 - $353.00
Q3 2025	59,722	$19,221	$334.45	$256.63 - $468.00
Q2 2025	52,941	$21,707	$438.78	$274.97 - $544.93
Q1 2025	49,687	$15,430	$342.01	$263.68 - $441.76