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United States Software & IT Services

Duolingo Inc (DUOL)

Track

Over the last 90 days, Duolingo Inc. has seen significant insider selling, with a net value of -$467,595. Executives were the primary sellers. Notably, multiple planned and proposed sales occurred around mid-May, involving key executives like Natalie Glance and Stephen Chen. There was one notable insider buy in early March.
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Ticker: DUOL Exchange: NSM
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• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Activity signal Earnings
Top insiders
Trades
Glance Natalie
Chief Engineering Officer
2 sales — total 381,656 USD
Planned sale 18 May 2026
Value US$4,019,255.92 | Price 237.23 | Shares 99,030
Planned sale 18 May 2026
Value US$1,557,595.18 | Price 169.21 | Shares 27,969
Planned sale 18 May 2026
Value US$730,336.31 | Price 291.17 | Shares 31,249
Planned sale 18 May 2026
Value US$1,619,657.16 | Price 38.34 | Shares 22,912
Proposed sale 18 May 2026
Value US$221,542.62 | Price 112.06 | Shares 1,977
Proposed sale 18 May 2026
Value US$376,521.60 | Price 112.06 | Shares 3,360
Sale 15 May 2026
Value US$216,356.64 | Price 112.16 | Shares 1,929
Sale 15 May 2026
Value US$159,267.20 | Price 112.16 | Shares 1,420
Sale 15 May 2026
Value US$91,971.20 | Price 112.16 | Shares 820
Proposed sale 15 May 2026
Value US$159,260.38 | Price 112.16 | Shares 1,420
Proposed sale 15 May 2026
Value US$91,967.26 | Price 112.16 | Shares 820
Proposed sale 15 May 2026
Value US$216,347.38 | Price 112.16 | Shares 1,929
Buy 3 Mar 2026
Value US$498,792.00 | Price 99.76 | Shares 5,000
Planned sale 18 Feb 2026
Value US$9,237.60 | Price 115.47 | Shares 80
Planned sale 18 Feb 2026
Value US$59,566.99 | Price 114.55 | Shares 520
Planned sale 18 Feb 2026
Value US$54,696.19 | Price 113.95 | Shares 480
Planned sale 18 Feb 2026
Value US$91,812.43 | Price 111.83 | Shares 821
Planned sale 18 Feb 2026
Value US$41,503.18 | Price 115.29 | Shares 360
Planned sale 18 Feb 2026
Value US$201,704.93 | Price 114.35 | Shares 1,764
Planned sale 18 Feb 2026
Value US$26,755.18 | Price 113.37 | Shares 236
Planned sale 18 Feb 2026
Value US$182,528.58 | Price 112.26 | Shares 1,626
Planned sale 18 Feb 2026
Value US$41,503.90 | Price 115.29 | Shares 360
Planned sale 18 Feb 2026
Value US$173,718.82 | Price 114.29 | Shares 1,520
Planned sale 18 Feb 2026
Value US$18,848.50 | Price 113.55 | Shares 166
Planned sale 18 Feb 2026
Value US$168,331.70 | Price 112.30 | Shares 1,499
Proposed sale 18 Feb 2026
Value US$213,064.08 | Price 112.08 | Shares 1,901
Proposed sale 18 Feb 2026
Value US$446,750.88 | Price 112.08 | Shares 3,986
Proposed sale 18 Feb 2026
Value US$397,323.60 | Price 112.08 | Shares 3,545
Sale 17 Feb 2026
Value US$98,613.76 | Price 110.06 | Shares 896
Sale 17 Feb 2026
Value US$110,060.00 | Price 110.06 | Shares 1,000
Sale 17 Feb 2026
Value US$205,812.20 | Price 110.06 | Shares 1,870
Sale 17 Feb 2026
Value US$191,614.46 | Price 110.06 | Shares 1,741
Proposed sale 17 Feb 2026
Value US$205,813.32 | Price 110.06 | Shares 1,870
Proposed sale 17 Feb 2026
Value US$191,615.50 | Price 110.06 | Shares 1,741
Proposed sale 17 Feb 2026
Value US$98,614.30 | Price 110.06 | Shares 896
Proposed sale 17 Feb 2026
Value US$110,060.60 | Price 110.06 | Shares 1,000
Proposed sale 12 Dec 2025
Value US$2,009,600.00 | Price 200.96 | Shares 10,000
Planned sale 19 Nov 2025
Value US$49,470.79 | Price 176.68 | Shares 280
Planned sale 19 Nov 2025
Value US$76,323.62 | Price 175.46 | Shares 435
Planned sale 19 Nov 2025
Value US$539,362.26 | Price 174.61 | Shares 3,089
Planned sale 19 Nov 2025
Value US$132,045.82 | Price 173.74 | Shares 760
Planned sale 19 Nov 2025
Value US$220,831.21 | Price 172.39 | Shares 1,281
Planned sale 19 Nov 2025
Value US$344,534.46 | Price 171.50 | Shares 2,009
Planned sale 19 Nov 2025
Value US$170,548.80 | Price 170.55 | Shares 1,000
Planned sale 19 Nov 2025
Value US$194,324.13 | Price 169.57 | Shares 1,146
Planned sale 18 Nov 2025
Value US$85,049.18 | Price 177.19 | Shares 480
Planned sale 18 Nov 2025
Value US$56,299.62 | Price 175.94 | Shares 320
Planned sale 18 Nov 2025
Value US$104,039.81 | Price 175.15 | Shares 594
Planned sale 18 Nov 2025
Value US$20,876.40 | Price 173.97 | Shares 120
Planned sale 18 Nov 2025
Value US$35,529.60 | Price 177.65 | Shares 200
Planned sale 18 Nov 2025
Value US$140,819.33 | Price 176.91 | Shares 796
Planned sale 18 Nov 2025
Value US$154,643.28 | Price 175.73 | Shares 880
Planned sale 18 Nov 2025
Value US$138,776.19 | Price 175.00 | Shares 793
Planned sale 18 Nov 2025
Value US$67,874.31 | Price 174.04 | Shares 390
Planned sale 18 Nov 2025
Value US$28,416.40 | Price 177.60 | Shares 160
Planned sale 18 Nov 2025
Value US$99,117.98 | Price 177.00 | Shares 560
Planned sale 18 Nov 2025
Value US$149,371.86 | Price 175.73 | Shares 850
Planned sale 18 Nov 2025
Value US$129,651.95 | Price 174.97 | Shares 741
Planned sale 18 Nov 2025
Value US$27,807.60 | Price 173.80 | Shares 160
Proposed sale 18 Nov 2025
Value US$545,327.93 | Price 178.27 | Shares 3,059
Proposed sale 18 Nov 2025
Value US$269,900.78 | Price 178.27 | Shares 1,514
Proposed sale 18 Nov 2025
Value US$440,505.17 | Price 178.27 | Shares 2,471
Sale 17 Nov 2025
Value US$228,131.90 | Price 177.95 | Shares 1,282
Sale 17 Nov 2025
Value US$498,082.05 | Price 177.95 | Shares 2,799
Sale 17 Nov 2025
Value US$450,925.30 | Price 177.95 | Shares 2,534
Sale 17 Nov 2025
Value US$256,959.80 | Price 177.95 | Shares 1,444
Proposed sale 17 Nov 2025
Value US$256,963.41 | Price 177.95 | Shares 1,444
Proposed sale 17 Nov 2025
Value US$450,931.64 | Price 177.95 | Shares 2,534
Proposed sale 17 Nov 2025
Value US$228,135.11 | Price 177.95 | Shares 1,282
Proposed sale 17 Nov 2025
Value US$498,089.05 | Price 177.95 | Shares 2,799
Planned sale 4 Nov 2025
Value US$305,563.75 | Price 266.87 | Shares 1,145
Planned sale 4 Nov 2025
Value US$459,594.08 | Price 266.12 | Shares 1,727
Planned sale 4 Nov 2025
Value US$201,412.46 | Price 265.02 | Shares 760
Planned sale 4 Nov 2025
Value US$429,098.48 | Price 264.06 | Shares 1,625
Planned sale 4 Nov 2025
Value US$147,264.54 | Price 262.97 | Shares 560
Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other
Notification date Transaction date B/S Transaction type Insider and/or position Nb. shares
Price
Value 		Number of shares Price Value Details
2026-05-19 2026-05-18 PlS Planned sale
3.5
Glance Natalie

Chief Engineering Officer

Officer
99,030 -31.9%
237.23
US$4,019,256 		99,030 -31.9% 237.23 US$4,019,256
2026-05-19 2026-05-18 PlS Planned sale
3.5
Glance Natalie

Chief Engineering Officer

Officer
27,969 +31.0%
169.21
US$1,557,595 		27,969 +31.0% 169.21 US$1,557,595
2026-05-19 2026-05-18 PlS Planned sale
3.5
Chen Stephen C.

General Counsel

Officer
31,249 -10.4%
291.17
US$730,336 		31,249 -10.4% 291.17 US$730,336
2026-05-19 2026-05-18 PlS Planned sale
3.5
Chen Stephen C.

General Counsel

Officer
1,277 -2.3%
113.27
US$144,648 		1,277 -2.3% 113.27 US$144,648
2026-05-18 2026-05-18 PrS Proposed sale
3.5
STEPHEN CHEN

Officer

Officer
1,977
112.06
US$221,543 		1,977 112.06 US$221,543
2026-05-18 2026-05-18 PrS Proposed sale
3.5
NATALIE GLANCE

Officer

Officer
3,360
112.06
US$376,522 		3,360 112.06 US$376,522
2026-05-19 2026-05-15 S Sale
3.5
Glance Natalie

Chief Engineering Officer

Officer
1,929 -1.1%
112.16
US$216,357 		1,929 -1.1% 112.16 US$216,357
2026-05-19 2026-05-15 S Sale
3.5
Meese Robert

Chief Business Officer

Officer
1,420 -0.8%
112.16
US$159,267 		1,420 -0.8% 112.16 US$159,267
2026-05-19 2026-05-15 S Sale
3.5
Chen Stephen C.

General Counsel

Officer
820 -1.5%
112.16
US$91,971 		820 -1.5% 112.16 US$91,971
2026-05-15 2026-05-15 PrS Proposed sale
3.5
ROBERT MEESE

Officer

Officer
1,420
112.16
US$159,260 		1,420 112.16 US$159,260
2026-05-15 2026-05-15 PrS Proposed sale
3.5
STEPHEN CHEN

Officer

Officer
820
112.16
US$91,967 		820 112.16 US$91,967
2026-05-15 2026-05-15 PrS Proposed sale
3.5
NATALIE GLANCE

Officer

Officer
1,929
112.16
US$216,347 		1,929 112.16 US$216,347
2026-03-04 2026-03-03 B Purchase
Shelton James H
Non-Executive Director
5,000 +107.9%
99.76
US$498,792 		5,000 +107.9% 99.76 US$498,792
2026-02-20 2026-02-18 PlS Planned sale
3.5
Chen Stephen C.

General Counsel

Officer
80 -0.3%
115.47
US$9,238 		80 -0.3% 115.47 US$9,238
2026-02-20 2026-02-18 PlS Planned sale
3.5
Chen Stephen C.

General Counsel

Officer
520 -1.7%
114.55
US$59,567 		520 -1.7% 114.55 US$59,567
2026-02-20 2026-02-18 PlS Planned sale
3.5
Chen Stephen C.

General Counsel

Officer
480 -1.5%
113.95
US$54,696 		480 -1.5% 113.95 US$54,696
2026-02-20 2026-02-18 PlS Planned sale
3.5
Chen Stephen C.

General Counsel

Officer
821 -2.5%
111.83
US$91,812 		821 -2.5% 111.83 US$91,812
2026-02-20 2026-02-18 PlS Planned sale
3.5
Skaruppa Matthew

Chief Financial Officer

Officer
360 -1.1%
115.29
US$41,503 		360 -1.1% 115.29 US$41,503
2026-02-20 2026-02-18 PlS Planned sale
3.5
Skaruppa Matthew

Chief Financial Officer

Officer
1,764 -5.2%
114.35
US$201,705 		1,764 -5.2% 114.35 US$201,705
2026-02-20 2026-02-18 PlS Planned sale
3.5
Skaruppa Matthew

Chief Financial Officer

Officer
236 -0.7%
113.37
US$26,755 		236 -0.7% 113.37 US$26,755
2026-02-20 2026-02-18 PlS Planned sale
3.5
Skaruppa Matthew

Chief Financial Officer

Officer
1,626 -4.6%
112.26
US$182,529 		1,626 -4.6% 112.26 US$182,529
2026-02-20 2026-02-18 PlS Planned sale
3.5
Glance Natalie

Chief Engineering Officer

Officer
360 -0.3%
115.29
US$41,504 		360 -0.3% 115.29 US$41,504
2026-02-20 2026-02-18 PlS Planned sale
3.5
Glance Natalie

Chief Engineering Officer

Officer
1,520 -1.3%
114.29
US$173,719 		1,520 -1.3% 114.29 US$173,719
2026-02-20 2026-02-18 PlS Planned sale
3.5
Glance Natalie

Chief Engineering Officer

Officer
166 -0.1%
113.55
US$18,849 		166 -0.1% 113.55 US$18,849
2026-02-20 2026-02-18 PlS Planned sale
3.5
Glance Natalie

Chief Engineering Officer

Officer
1,499 -1.3%
112.30
US$168,332 		1,499 -1.3% 112.30 US$168,332
2026-02-18 2026-02-18 PrS Proposed sale
3.5
STEPHEN CHEN

Officer

Officer
1,901
112.08
US$213,064 		1,901 112.08 US$213,064
2026-02-18 2026-02-18 PrS Proposed sale
3.5
MATTHEW SKARUPPA

Officer

Officer
3,986
112.08
US$446,751 		3,986 112.08 US$446,751
2026-02-18 2026-02-18 PrS Proposed sale
3.5
NATALIE GLANCE

Officer

Officer
3,545
112.08
US$397,324 		3,545 112.08 US$397,324
2026-02-20 2026-02-17 S Sale
3.5
Chen Stephen C.

General Counsel

Officer
896 -2.7%
110.06
US$98,614 		896 -2.7% 110.06 US$98,614
2026-02-20 2026-02-17 S Sale
3.5
Meese Robert

Chief Business Officer

Officer
1,000 -0.8%
110.06
US$110,060 		1,000 -0.8% 110.06 US$110,060
2026-02-20 2026-02-17 S Sale
3.5
Skaruppa Matthew

Chief Financial Officer

Officer
1,870 -5.0%
110.06
US$205,812 		1,870 -5.0% 110.06 US$205,812
2026-02-20 2026-02-17 S Sale
3.5
Glance Natalie

Chief Engineering Officer

Officer
1,741 -1.4%
110.06
US$191,614 		1,741 -1.4% 110.06 US$191,614
2026-02-17 2026-02-17 PrS Proposed sale
3.5
MATTHEW SKARUPPA

Officer

Officer
1,870
110.06
US$205,813 		1,870 110.06 US$205,813
2026-02-17 2026-02-17 PrS Proposed sale
3.5
NATALIE GLANCE

Officer

Officer
1,741
110.06
US$191,616 		1,741 110.06 US$191,616
2026-02-17 2026-02-17 PrS Proposed sale
3.5
STEPHEN CHEN

Officer

Officer
896
110.06
US$98,614 		896 110.06 US$98,614
2026-02-17 2026-02-17 PrS Proposed sale
3.5
ROBERT MEESE

Officer

Officer
1,000
110.06
US$110,061 		1,000 110.06 US$110,061
2025-12-12 2025-12-12 PrS Proposed sale
THE SEVERIN HACKER FOUNDATIONC/O PHILIP BARTELS

Director; Officer; 10% Stockholder

Executive Director Large shareholder
10,000
200.96
US$2,009,600 		10,000 200.96 US$2,009,600
2025-11-20 2025-11-19 PlS Planned sale
2.5
Hacker Severin

Chief Tech Officer, Co-Founder

Executive Director Large shareholder
280 -79.5%
176.68
US$49,471 		280 -79.5% 176.68 US$49,471
2025-11-20 2025-11-19 PlS Planned sale
2.5
Hacker Severin

Chief Tech Officer, Co-Founder

Executive Director Large shareholder
435 -55.3%
175.46
US$76,324 		435 -55.3% 175.46 US$76,324
2025-11-20 2025-11-19 PlS Planned sale
2.5
Hacker Severin

Chief Tech Officer, Co-Founder

Executive Director Large shareholder
3,089 -79.7%
174.61
US$539,362 		3,089 -79.7% 174.61 US$539,362
2025-11-20 2025-11-19 PlS Planned sale
2.5
Hacker Severin

Chief Tech Officer, Co-Founder

Executive Director Large shareholder
760 -16.4%
173.74
US$132,046 		760 -16.4% 173.74 US$132,046
2025-11-20 2025-11-19 PlS Planned sale
2.5
Hacker Severin

Chief Tech Officer, Co-Founder

Executive Director Large shareholder
1,281 -21.6%
172.39
US$220,831 		1,281 -21.6% 172.39 US$220,831
2025-11-20 2025-11-19 PlS Planned sale
2.5
Hacker Severin

Chief Tech Officer, Co-Founder

Executive Director Large shareholder
2,009 -25.3%
171.50
US$344,534 		2,009 -25.3% 171.50 US$344,534
2025-11-20 2025-11-19 PlS Planned sale
2.5
Hacker Severin

Chief Tech Officer, Co-Founder

Executive Director Large shareholder
1,000 -11.2%
170.55
US$170,549 		1,000 -11.2% 170.55 US$170,549
2025-11-20 2025-11-19 PlS Planned sale
2.5
Hacker Severin

Chief Tech Officer, Co-Founder

Executive Director Large shareholder
1,146 -11.4%
169.57
US$194,324 		1,146 -11.4% 169.57 US$194,324
2025-11-19 2025-11-18 PlS Planned sale
3.5
Chen Stephen C.

General Counsel

Officer
480 -1.5%
177.19
US$85,049 		480 -1.5% 177.19 US$85,049
2025-11-19 2025-11-18 PlS Planned sale
3.5
Chen Stephen C.

General Counsel

Officer
320 -1.0%
175.94
US$56,300 		320 -1.0% 175.94 US$56,300
2025-11-19 2025-11-18 PlS Planned sale
3.5
Chen Stephen C.

General Counsel

Officer
594 -1.8%
175.15
US$104,040 		594 -1.8% 175.15 US$104,040
2025-11-19 2025-11-18 PlS Planned sale
3.5
Chen Stephen C.

General Counsel

Officer
120 -0.4%
173.97
US$20,876 		120 -0.4% 173.97 US$20,876
2025-11-19 2025-11-18 PlS Planned sale
3.5
Skaruppa Matthew

Chief Financial Officer

Officer
200 -0.5%
177.65
US$35,530 		200 -0.5% 177.65 US$35,530
2025-11-19 2025-11-18 PlS Planned sale
3.5
Skaruppa Matthew

Chief Financial Officer

Officer
796 -2.1%
176.91
US$140,819 		796 -2.1% 176.91 US$140,819
2025-11-19 2025-11-18 PlS Planned sale
3.5
Skaruppa Matthew

Chief Financial Officer

Officer
880 -2.2%
175.73
US$154,643 		880 -2.2% 175.73 US$154,643
2025-11-19 2025-11-18 PlS Planned sale
3.5
Skaruppa Matthew

Chief Financial Officer

Officer
793 -2.0%
175.00
US$138,776 		793 -2.0% 175.00 US$138,776
2025-11-19 2025-11-18 PlS Planned sale
3.5
Skaruppa Matthew

Chief Financial Officer

Officer
390 -1.0%
174.04
US$67,874 		390 -1.0% 174.04 US$67,874
2025-11-19 2025-11-18 PlS Planned sale
3.5
Glance Natalie

Chief Engineering Officer

Officer
160 -0.1%
177.60
US$28,416 		160 -0.1% 177.60 US$28,416
2025-11-19 2025-11-18 PlS Planned sale
3.5
Glance Natalie

Chief Engineering Officer

Officer
560 -0.5%
177.00
US$99,118 		560 -0.5% 177.00 US$99,118
2025-11-19 2025-11-18 PlS Planned sale
3.5
Glance Natalie

Chief Engineering Officer

Officer
850 -0.8%
175.73
US$149,372 		850 -0.8% 175.73 US$149,372
2025-11-19 2025-11-18 PlS Planned sale
3.5
Glance Natalie

Chief Engineering Officer

Officer
741 -0.7%
174.97
US$129,652 		741 -0.7% 174.97 US$129,652
2025-11-19 2025-11-18 PlS Planned sale
3.5
Glance Natalie

Chief Engineering Officer

Officer
160 -0.1%
173.80
US$27,808 		160 -0.1% 173.80 US$27,808
2025-11-18 2025-11-18 PrS Proposed sale
3.5
MATTHEW SKARUPPA

Officer

Officer
3,059
178.27
US$545,328 		3,059 178.27 US$545,328
2025-11-18 2025-11-18 PrS Proposed sale
3.5
STEPHEN CHEN

Officer

Officer
1,514
178.27
US$269,901 		1,514 178.27 US$269,901
2025-11-18 2025-11-18 PrS Proposed sale
3.5
NATALIE GLANCE

Officer

Officer
2,471
178.27
US$440,505 		2,471 178.27 US$440,505
2025-11-19 2025-11-17 S Sale
3.5
Chen Stephen C.

General Counsel

Officer
1,282 -3.7%
177.95
US$228,132 		1,282 -3.7% 177.95 US$228,132
2025-11-19 2025-11-17 S Sale
3.5
Skaruppa Matthew

Chief Financial Officer

Officer
2,799 -6.5%
177.95
US$498,082 		2,799 -6.5% 177.95 US$498,082
2025-11-19 2025-11-17 S Sale
3.5
Glance Natalie

Chief Engineering Officer

Officer
2,534 -2.2%
177.95
US$450,925 		2,534 -2.2% 177.95 US$450,925
2025-11-18 2025-11-17 S Sale
3.5
Meese Robert

Chief Business Officer

Officer
1,444 -1.2%
177.95
US$256,960 		1,444 -1.2% 177.95 US$256,960
2025-11-17 2025-11-17 PrS Proposed sale
3.5
ROBERT MEESE

Officer

Officer
1,444
177.95
US$256,963 		1,444 177.95 US$256,963
2025-11-17 2025-11-17 PrS Proposed sale
3.5
NATALIE GLANCE

Officer

Officer
2,534
177.95
US$450,932 		2,534 177.95 US$450,932
2025-11-17 2025-11-17 PrS Proposed sale
3.5
STEPHEN CHEN

Officer

Officer
1,282
177.95
US$228,135 		1,282 177.95 US$228,135
2025-11-17 2025-11-17 PrS Proposed sale
3.5
MATTHEW SKARUPPA

Officer

Officer
2,799
177.95
US$498,089 		2,799 177.95 US$498,089
2025-11-06 2025-11-04 PlS Planned sale
2.5
Hacker Severin

Chief Tech Officer, Co-Founder

Executive Director Large shareholder
1,145 -94.1%
266.87
US$305,564 		1,145 -94.1% 266.87 US$305,564
2025-11-06 2025-11-04 PlS Planned sale
2.5
Hacker Severin

Chief Tech Officer, Co-Founder

Executive Director Large shareholder
1,727 -58.7%
266.12
US$459,594 		1,727 -58.7% 266.12 US$459,594
2025-11-06 2025-11-04 PlS Planned sale
2.5
Hacker Severin

Chief Tech Officer, Co-Founder

Executive Director Large shareholder
760 -20.5%
265.02
US$201,412 		760 -20.5% 265.02 US$201,412
2025-11-06 2025-11-04 PlS Planned sale
2.5
Hacker Severin

Chief Tech Officer, Co-Founder

Executive Director Large shareholder
1,625 -30.5%
264.06
US$429,098 		1,625 -30.5% 264.06 US$429,098
2025-11-06 2025-11-04 PlS Planned sale
2.5
Hacker Severin

Chief Tech Officer, Co-Founder

Executive Director Large shareholder
560 -9.5%
262.97
US$147,265 		560 -9.5% 262.97 US$147,265
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