Stephen C. Chen Duolingo, Inc. (DUOL) insider trading activity

Stephen C. Chen is General Counsel of Duolingo, Inc.. Currently has a direct ownership of 33,342 shares of DUOL, which is worth approximately $6.17 Million. The most recent transaction as insider was on Dec 29, 2025, when has been sold 1,800 shares (Class A Common Stock) at a price of $14.42 per share, resulting in proceeds of $25,956. This information was disclosed in a Form 4 filing with the Securities and Exchange Commission (SEC).

Shares Held (Direct Ownership) 33.3K

2.9% 3M change

5.73% 12M change

Total Value Held $6.17 Million

Stephen C. Chen Transaction History

Date	Transaction	Value	Shares Traded	Shares Held
Dec 29 2025	BUY Exercise of conversion of derivative security	$25,956 $14.42 p/Share	1,800 Added 5.12%	33,342 Class A Common Stock
Nov 18 2025	SELL Open market or private sale	$265,797 $175.56 p/Share	1,514 Reduced 4.58%	31,542 Class A Common Stock
Nov 17 2025	SELL Open market or private sale	$228,131 $177.95 p/Share	1,282 Reduced 3.73%	33,056 Class A Common Stock
Sep 18 2025	BUY Exercise of conversion of derivative security	$24,514 $14.42 p/Share	1,700 Added 4.72%	34,338 Class A Common Stock
Aug 26 2025	SELL Open market or private sale	$486,860 $321.36 p/Share	1,515 Reduced 4.44%	32,638 Class A Common Stock
Aug 15 2025	SELL Open market or private sale	$421,816 $329.03 p/Share	1,282 Reduced 3.62%	34,153 Class A Common Stock
Aug 15 2025	SELL Bona fide gift	-	750 Reduced 2.07%	35,435 Class A Common Stock

May 16 2025	SELL Open market or private sale	$1,392,175 $528.34 p/Share	2,635 Reduced 6.79%	36,185 Class A Common Stock
May 15 2025	SELL Open market or private sale	$668,359 $531.71 p/Share	1,257 Reduced 3.14%	38,820 Class A Common Stock
May 15 2025	BUY Grant, award, or other acquisition	-	5,443 Added 11.96%	40,077 Class A Common Stock
Feb 18 2025	SELL Open market or private sale	$898,128 $435.14 p/Share	2,064 Reduced 5.62%	34,634 Class A Common Stock
Feb 06 2025	BUY Exercise of conversion of derivative security	$19,193 $14.42 p/Share	1,331 Added 3.5%	36,698 Class A Common Stock
Dec 19 2024	BUY Exercise of conversion of derivative security	$53,354 $14.42 p/Share	3,700 Added 9.47%	35,367 Class A Common Stock
Nov 18 2024	SELL Open market or private sale	$817,064 $309.26 p/Share	2,642 Reduced 7.7%	31,667 Class A Common Stock
Nov 15 2024	SELL Open market or private sale	$386,315 $309.3 p/Share	1,249 Reduced 3.51%	34,309 Class A Common Stock
Aug 30 2024	SELL Open market or private sale	$4,108,266 $211.07 p/Share	19,464 Reduced 35.37%	35,558 Class A Common Stock
Aug 30 2024	BUY Exercise of conversion of derivative security	$106,448 $14.42 p/Share	7,382 Added 11.83%	55,022 Class A Common Stock
Aug 15 2024	SELL Open market or private sale	$249,175 $199.5 p/Share	1,249 Reduced 2.55%	47,640 Class A Common Stock
Jun 28 2024	BUY Exercise of conversion of derivative security	$96,830 $14.42 p/Share	6,715 Added 12.08%	48,889 Class A Common Stock
May 15 2024	SELL Open market or private sale	-	988 Reduced 2.9%	33,057 Class A Common Stock
May 15 2024	BUY Grant, award, or other acquisition	-	9,117 Added 17.78%	42,174 Class A Common Stock
Feb 15 2024	SELL Open market or private sale	-	988 Reduced 2.82%	34,045 Class A Common Stock
Feb 09 2024	SELL Open market or private sale	$380,000 $190.0 p/Share	2,000 Reduced 5.4%	35,033 Class A Common Stock
Feb 09 2024	BUY Exercise of conversion of derivative security	$28,840 $14.42 p/Share	2,000 Added 5.12%	37,033 Class A Common Stock
Jan 04 2024	SELL Open market or private sale	$3,737,519 $207.64 p/Share	18,000 Reduced 33.94%	35,033 Class A Common Stock

SCC

Stephen C. Chen

General Counsel

Pittsburgh, PA

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