Duolingo, Inc. (DUOL)
$146.85+$3.99 (+2.79%) Today
Latest DUOL Insider Trades
Natalie Glance - Officer
Natalie Glance - OfficerNatalie Glance - OfficerNatalie Glance - OfficerDuolingo Inc is a technology company that develops a mobile learning platform to learn languages. Its products are powered by sophisticated data analytics and artificial intelligence and delivered with class art, animation, and design to make it easier for learners to stay motivated, master new material, and achieve their learning goals. Its solutions include the Duolingo Language Learning App, Super Duolingo, Duolingo English Test: AI-Driven Language Assessment, Duolingo For Schools, Duolingo ABC, and Duolingo Math. It has four predominant sources of revenue: time-based subscriptions, in-app advertising placement by third parties, the Duolingo English Test, and In-App purchases. Geographically, the company generates revenue from its customers in the United States and other markets.
| Form 4 transaction type | Transactions | Shares | Total value |
|---|---|---|---|
| Open-market sale | 5 | 6,668 | $874K |
| Grant or award | 13 | 19,107 | |
| Option exercise | 2 | 116 |
Dollar totals are shown for open-market purchases and sales only. Grants, option exercises, gifts and tax withholding are reported by share count because they are not trades at a market price.
88 Form 4 filings on record, the earliest from Oct 3, 2024, newest first. Filing history page 2 of 3.
| Date | Insider | Transaction | Security | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Natalie Glance - Officer | Open-market sale | Class A Common Stock | 1,741 | $110.06 | $192K | |
| Natalie Glance - Officer | Open-market sale | Class A Common Stock | 1,499 | $112.30 | $168K | |
| Natalie Glance - Officer | Open-market sale | Class A Common Stock | 166 | $113.55 | $19K | |
| Natalie Glance - Officer | Open-market sale | Class A Common Stock | 1,520 | $114.29 | $174K | |
| Natalie Glance - Officer | Open-market sale | Class A Common Stock | 360 | $115.29 | $42K | |
 Severin Hacker - Officer | Option exercise | Performance-Based Restricted Stock Units | 60,000 | $0.00 | - | |
| Severin Hacker - Officer | Option exercise | Class B Common Stock | 60,000 | $0.00 | - | |
| Severin Hacker - Officer | Tax withholding / forfeiture | Class B Common Stock | 30,594 | $112.57 | $3.44M | |
| Ahn Luis von - Officer | Option exercise | Performance-Based Restricted Stock Units | 120,000 | $0.00 | - | |
| Ahn Luis von - Officer | Option exercise | Class B Common Stock | 120,000 | $0.00 | - | |
| Ahn Luis von - Officer | Tax withholding / forfeiture | Class B Common Stock | 53,640 | $112.57 | $6.04M | |
| Severin Hacker - Officer | Option exercise | Performance-Based Restricted Stock Units | 60,000 | $0.00 | - | |
| Severin Hacker - Officer | Option exercise | Class B Common Stock | 60,000 | $0.00 | - | |
| Severin Hacker - Officer | Tax withholding / forfeiture | Class B Common Stock | 31,770 | $185.45 | $5.89M | |
| Severin Hacker - Officer | Option exercise | Stock Option (Right to Buy) | 5,252 | $0.00 | - | |
| Severin Hacker - Officer | Option exercise | Class B Common Stock | 5,252 | $38.08 | $200K | |
| Ahn Luis von - Officer | Option exercise | Performance-Based Restricted Stock Units | 120,000 | $0.00 | - | |
| Ahn Luis von - Officer | Option exercise | Class B Common Stock | 120,000 | $0.00 | - | |
| Ahn Luis von - Officer | Tax withholding / forfeiture | Class B Common Stock | 51,768 | $185.45 | $9.60M | |
| Severin Hacker - Officer | Open-market sale | Class A Common Stock | 760 | $173.74 | $132K | |
| Severin Hacker - Officer | Open-market sale | Class A Common Stock | 3,089 | $174.61 | $539K | |
| Severin Hacker - Officer | Open-market sale | Class A Common Stock | 435 | $175.46 | $76K | |
| Severin Hacker - Officer | Open-market sale | Class A Common Stock | 280 | $176.68 | $49K | |
| Severin Hacker - Officer | Option exercise | Stock Option (Right to Buy) | 10,000 | $0.00 | - | |
| Severin Hacker - Officer | Other | Class B Common Stock | 10,000 | $0.00 | - | |
| Severin Hacker - Officer | Other | Class B Common Stock | 10,000 | $0.00 | - | |
| Severin Hacker - Officer | Other | Class A Common Stock | 10,000 | $38.08 | $381K | |
| Severin Hacker - Officer | Open-market sale | Class A Common Stock | 1,146 | $169.57 | $194K | |
| Severin Hacker - Officer | Open-market sale | Class A Common Stock | 1,000 | $170.55 | $171K | |
| Severin Hacker - Officer | Open-market sale | Class A Common Stock | 2,009 | $171.50 | $345K | |
| Severin Hacker - Officer | Open-market sale | Class A Common Stock | 1,281 | $172.39 | $221K | |
| Natalie Glance - Officer | Open-market sale | Class A Common Stock | 2,534 | $177.95 | $451K | |
| Natalie Glance - Officer | Open-market sale | Class A Common Stock | 160 | $173.80 | $28K | |
| Natalie Glance - Officer | Open-market sale | Class A Common Stock | 741 | $174.97 | $130K | |
| Natalie Glance - Officer | Open-market sale | Class A Common Stock | 850 | $175.73 | $149K | |
| Natalie Glance - Officer | Open-market sale | Class A Common Stock | 560 | $177.00 | $99K | |
| Natalie Glance - Officer | Open-market sale | Class A Common Stock | 160 | $177.60 | $28K | |
| Matthew Skaruppa - Officer | Open-market sale | Class A Common Stock | 796 | $176.91 | $141K | |
| Matthew Skaruppa - Officer | Open-market sale | Class A Common Stock | 200 | $177.65 | $36K | |
| Matthew Skaruppa - Officer | Open-market sale | Class A Common Stock | 2,799 | $177.95 | $498K | |
| Matthew Skaruppa - Officer | Open-market sale | Class A Common Stock | 390 | $174.04 | $68K | |
| Matthew Skaruppa - Officer | Open-market sale | Class A Common Stock | 793 | $175.00 | $139K | |
| Matthew Skaruppa - Officer | Open-market sale | Class A Common Stock | 880 | $175.73 | $155K | |
| Stephen C. Chen - Officer | Open-market sale | Class A Common Stock | 1,282 | $177.95 | $228K | |
| Stephen C. Chen - Officer | Open-market sale | Class A Common Stock | 120 | $173.97 | $21K | |
| Stephen C. Chen - Officer | Open-market sale | Class A Common Stock | 594 | $175.15 | $104K | |
| Stephen C. Chen - Officer | Open-market sale | Class A Common Stock | 320 | $175.94 | $56K | |
| Stephen C. Chen - Officer | Open-market sale | Class A Common Stock | 480 | $177.19 | $85K | |
| Robert Meese - Officer | Open-market sale | Class A Common Stock | 1,444 | $177.95 | $257K | |
| Severin Hacker - Officer | Open-market sale | Class A Common Stock | 1,778 | $261.94 | $466K | |
| Severin Hacker - Officer | Open-market sale | Class A Common Stock | 560 | $262.97 | $147K | |
| Severin Hacker - Officer | Open-market sale | Class A Common Stock | 1,625 | $264.06 | $429K | |
| Severin Hacker - Officer | Open-market sale | Class A Common Stock | 760 | $265.02 | $201K | |
| Severin Hacker - Officer | Open-market sale | Class A Common Stock | 1,727 | $266.12 | $460K | |
| Severin Hacker - Officer | Open-market sale | Class A Common Stock | 1,145 | $266.87 | $306K | |
| Severin Hacker - Officer | Option exercise | Stock Option (Right to Buy) | 10,000 | $0.00 | - | |
| Severin Hacker - Officer | Other | Class B Common Stock | 10,000 | $0.00 | - | |
| Severin Hacker - Officer | Other | Class B Common Stock | 10,000 | $0.00 | - | |
| Severin Hacker - Officer | Other | Class A Common Stock | 10,000 | $38.08 | $381K | |
| Severin Hacker - Officer | Open-market sale | Class A Common Stock | 744 | $257.92 | $192K | |
| Severin Hacker - Officer | Open-market sale | Class A Common Stock | 936 | $258.77 | $242K | |
| Severin Hacker - Officer | Open-market sale | Class A Common Stock | 560 | $259.71 | $145K | |
| Severin Hacker - Officer | Open-market sale | Class A Common Stock | 165 | $261.14 | $43K | |
| Ahn Luis von - Officer | Option exercise | Performance-Based Restricted Stock Units | 120,000 | $0.00 | - | |
| Ahn Luis von - Officer | Option exercise | Class B Common Stock | 120,000 | $0.00 | - | |
| Ahn Luis von - Officer | Tax withholding / forfeiture | Class B Common Stock | 51,768 | $312.73 | $16.19M | |
| Severin Hacker - Officer | Open-market sale | Class A Common Stock | 500 | $309.06 | $155K | |
| Severin Hacker - Officer | Open-market sale | Class A Common Stock | 632 | $309.94 | $196K | |
| Severin Hacker - Officer | Open-market sale | Class A Common Stock | 1,000 | $311.43 | $311K | |
| Severin Hacker - Officer | Open-market sale | Class A Common Stock | 1,281 | $312.37 | $400K | |
| Severin Hacker - Officer | Open-market sale | Class A Common Stock | 500 | $313.93 | $157K | |
| Severin Hacker - Officer | Open-market sale | Class A Common Stock | 1,100 | $315.79 | $347K | |
| Severin Hacker - Officer | Open-market sale | Class A Common Stock | 1,600 | $316.64 | $507K | |
| Severin Hacker - Officer | Open-market sale | Class A Common Stock | 680 | $317.68 | $216K | |
| Severin Hacker - Officer | Open-market sale | Class A Common Stock | 907 | $318.73 | $289K | |
| Severin Hacker - Officer | Open-market sale | Class A Common Stock | 300 | $319.97 | $96K | |
| Severin Hacker - Officer | Open-market sale | Class A Common Stock | 400 | $321.75 | $129K | |
| Severin Hacker - Officer | Open-market sale | Class A Common Stock | 300 | $323.09 | $97K | |
| Severin Hacker - Officer | Open-market sale | Class A Common Stock | 100 | $324.10 | $32K | |
| Severin Hacker - Officer | Option exercise | Stock Option (Right to Buy) | 10,000 | $0.00 | - | |
| Severin Hacker - Officer | Other | Class B Common Stock | 10,000 | $0.00 | - | |
| Severin Hacker - Officer | Other | Class B Common Stock | 10,000 | $0.00 | - | |
| Severin Hacker - Officer | Option exercise | Performance-Based Restricted Stock Units | 60,000 | $0.00 | - | |
| Severin Hacker - Officer | Option exercise | Class B Common Stock | 60,000 | $0.00 | - | |
| Severin Hacker - Officer | Tax withholding / forfeiture | Class B Common Stock | 31,770 | $312.73 | $9.94M | |
| Severin Hacker - Officer | Other | Class A Common Stock | 10,000 | $38.08 | $381K | |
| Severin Hacker - Officer | Open-market sale | Class A Common Stock | 100 | $305.86 | $31K | |
| Severin Hacker - Officer | Open-market sale | Class A Common Stock | 600 | $307.55 | $185K | |
| Severin Hacker - Officer | Other | Class A Common Stock | 10,000 | $38.08 | $381K | |
| Severin Hacker - Officer | Open-market sale | Class A Common Stock | 500 | $317.31 | $159K | |
| Severin Hacker - Officer | Open-market sale | Class A Common Stock | 1,916 | $318.26 | $610K | |
| Severin Hacker - Officer | Open-market sale | Class A Common Stock | 1,599 | $319.56 | $511K | |
| Severin Hacker - Officer | Open-market sale | Class A Common Stock | 1,803 | $320.33 | $578K | |
| Severin Hacker - Officer | Open-market sale | Class A Common Stock | 1,173 | $321.39 | $377K | |
| Severin Hacker - Officer | Open-market sale | Class A Common Stock | 109 | $322.62 | $35K | |
| Severin Hacker - Officer | Open-market sale | Class A Common Stock | 1,300 | $327.44 | $426K | |
| Severin Hacker - Officer | Option exercise | Stock Option (Right to Buy) | 10,000 | $0.00 | - | |
| Severin Hacker - Officer | Open-market sale | Class A Common Stock | 300 | $324.10 | $97K | |
| Severin Hacker - Officer | Open-market sale | Class A Common Stock | 500 | $325.22 | $163K | |
| Severin Hacker - Officer | Open-market sale | Class A Common Stock | 600 | $326.50 | $196K | |
| Severin Hacker - Officer | Open-market sale | Class A Common Stock | 200 | $328.76 | $66K | |
| Severin Hacker - Officer | Other | Class B Common Stock | 10,000 | $0.00 | - | |
| Severin Hacker - Officer | Other | Class B Common Stock | 10,000 | $0.00 | - | |
| Natalie Glance - Officer | Open-market sale | Class A Common Stock | 100 | $300.56 | $30K | |
| Natalie Glance - Officer | Open-market sale | Class A Common Stock | 475 | $303.74 | $144K | |
| Natalie Glance - Officer | Open-market sale | Class A Common Stock | 200 | $305.09 | $61K | |
| Natalie Glance - Officer | Open-market sale | Class A Common Stock | 600 | $306.51 | $184K | |
| Natalie Glance - Officer | Open-market sale | Class A Common Stock | 108 | $312.75 | $34K | |
| Natalie Glance - Officer | Open-market sale | Class A Common Stock | 300 | $315.28 | $95K | |
| Natalie Glance - Officer | Open-market sale | Class A Common Stock | 300 | $316.74 | $95K | |
| Natalie Glance - Officer | Open-market sale | Class A Common Stock | 600 | $317.96 | $191K | |
| Natalie Glance - Officer | Open-market sale | Class A Common Stock | 600 | $319.76 | $192K | |
| Severin Hacker - Officer | Other | Class A Common Stock | 10,000 | $38.08 | $381K | |
| Severin Hacker - Officer | Open-market sale | Class A Common Stock | 1,300 | $286.77 | $373K | |
| Severin Hacker - Officer | Open-market sale | Class A Common Stock | 2,300 | $287.81 | $662K | |
| Severin Hacker - Officer | Open-market sale | Class A Common Stock | 2,300 | $288.81 | $664K | |
| Severin Hacker - Officer | Open-market sale | Class A Common Stock | 1,900 | $289.79 | $551K | |
| Severin Hacker - Officer | Open-market sale | Class A Common Stock | 2,200 | $290.78 | $640K | |
| Severin Hacker - Officer | Option exercise | Stock Option (Right to Buy) | 10,000 | $0.00 | - | |
| Severin Hacker - Officer | Other | Class B Common Stock | 10,000 | $0.00 | - | |
| Severin Hacker - Officer | Other | Class B Common Stock | 10,000 | $0.00 | - | |
| Stephen C. Chen - Officer | Option exercise | Class A Common Stock | 1,700 | $14.42 | $25K | |
| Stephen C. Chen - Officer | Option exercise | Stock Option (Right to Buy) | 1,700 | $0.00 | - | |
| Robert Meese - Officer | Option exercise | Class A Common Stock | 5,000 | $8.15 | $41K | |
| Robert Meese - Officer | Option exercise | Stock Option (Right to Buy) | 5,000 | $0.00 | - | |
| Severin Hacker - Officer | Other | Class A Common Stock | 10,000 | $38.08 | $381K | |
| Severin Hacker - Officer | Open-market sale | Class A Common Stock | 500 | $264.75 | $132K | |
| Severin Hacker - Officer | Open-market sale | Class A Common Stock | 1,148 | $265.95 | $305K | |
| Severin Hacker - Officer | Open-market sale | Class A Common Stock | 849 | $266.90 | $227K | |
| Severin Hacker - Officer | Open-market sale | Class A Common Stock | 2,100 | $267.93 | $563K | |
| Severin Hacker - Officer | Open-market sale | Class A Common Stock | 1,956 | $268.92 | $526K | |
| Severin Hacker - Officer | Open-market sale | Class A Common Stock | 1,600 | $269.87 | $432K | |
| Severin Hacker - Officer | Open-market sale | Class A Common Stock | 1,647 | $271.05 | $446K | |
| Severin Hacker - Officer | Open-market sale | Class A Common Stock | 200 | $271.57 | $54K | |
| Severin Hacker - Officer | Option exercise | Stock Option (Right to Buy) | 10,000 | $0.00 | - | |
| Severin Hacker - Officer | Other | Class B Common Stock | 10,000 | $0.00 | - | |
| Severin Hacker - Officer | Other | Class B Common Stock | 10,000 | $0.00 | - | |
| Matthew Skaruppa - Officer | Option exercise | Class A Common Stock | 1,378 | $14.42 | $20K | |
| Matthew Skaruppa - Officer | Open-market sale | Class A Common Stock | 500 | $311.38 | $156K | |
| Matthew Skaruppa - Officer | Open-market sale | Class A Common Stock | 300 | $312.67 | $94K | |
| Matthew Skaruppa - Officer | Open-market sale | Class A Common Stock | 755 | $314.16 | $237K | |
| Matthew Skaruppa - Officer | Open-market sale | Class A Common Stock | 1,402 | $315.27 | $442K | |
| Matthew Skaruppa - Officer | Open-market sale | Class A Common Stock | 2,301 | $316.24 | $728K | |
| Matthew Skaruppa - Officer | Open-market sale | Class A Common Stock | 800 | $317.44 | $254K | |
| Matthew Skaruppa - Officer | Open-market sale | Class A Common Stock | 1,501 | $318.36 | $478K | |
| Matthew Skaruppa - Officer | Open-market sale | Class A Common Stock | 700 | $319.33 | $224K | |
| Matthew Skaruppa - Officer | Open-market sale | Class A Common Stock | 1,100 | $320.50 | $353K | |
| Matthew Skaruppa - Officer | Open-market sale | Class A Common Stock | 1,578 | $321.33 | $507K | |
| Matthew Skaruppa - Officer | Option exercise | Stock Option (Right to Buy) | 1,378 | $0.00 | - | |
| Stephen C. Chen - Officer | Open-market sale | Class A Common Stock | 1,515 | $321.36 | $487K | |
| Severin Hacker - Officer | Other | Class A Common Stock | 10,000 | $0.00 | - | |
| Severin Hacker - Officer | Gift | Class A Common Stock | 10,000 | $0.00 | - | |
| Severin Hacker - Officer | Other | Class B Common Stock | 10,000 | $0.00 | - | |
| Severin Hacker - Officer | Other | Class A Common Stock | 10,000 | $38.08 | $381K | |
| Severin Hacker - Officer | Open-market sale | Class A Common Stock | 1,003 | $339.15 | $340K | |
| Severin Hacker - Officer | Open-market sale | Class A Common Stock | 1,700 | $340.03 | $578K | |
| Severin Hacker - Officer | Open-market sale | Class A Common Stock | 1,979 | $340.92 | $675K | |
| Severin Hacker - Officer | Open-market sale | Class A Common Stock | 1,318 | $342.00 | $451K | |
| Severin Hacker - Officer | Open-market sale | Class A Common Stock | 300 | $343.82 | $103K | |
| Severin Hacker - Officer | Open-market sale | Class A Common Stock | 300 | $345.02 | $104K | |
| Severin Hacker - Officer | Open-market sale | Class A Common Stock | 600 | $346.15 | $208K | |
| Severin Hacker - Officer | Open-market sale | Class A Common Stock | 500 | $347.48 | $174K | |
| Severin Hacker - Officer | Open-market sale | Class A Common Stock | 400 | $348.83 | $140K | |
| Severin Hacker - Officer | Open-market sale | Class A Common Stock | 100 | $349.28 | $35K | |
| Severin Hacker - Officer | Open-market sale | Class A Common Stock | 400 | $351.29 | $141K | |
| Severin Hacker - Officer | Open-market sale | Class A Common Stock | 200 | $352.40 | $70K | |
| Severin Hacker - Officer | Open-market sale | Class A Common Stock | 300 | $354.08 | $106K | |
| Severin Hacker - Officer | Open-market sale | Class A Common Stock | 400 | $354.89 | $142K | |
| Severin Hacker - Officer | Open-market sale | Class A Common Stock | 100 | $357.67 | $36K | |
| Severin Hacker - Officer | Open-market sale | Class A Common Stock | 200 | $359.30 | $72K | |
| Severin Hacker - Officer | Open-market sale | Class A Common Stock | 200 | $363.05 | $73K | |
| Severin Hacker - Officer | Option exercise | Stock Option (Right to Buy) | 10,000 | $0.00 | - | |
| Severin Hacker - Officer | Other | Class B Common Stock | 10,000 | $0.00 | - | |
| Severin Hacker - Officer | Other | Class B Common Stock | 10,000 | $0.00 | - | |
| Natalie Glance - Officer | Open-market sale | Class A Common Stock | 300 | $364.64 | $109K | |
| Natalie Glance - Officer | Open-market sale | Class A Common Stock | 900 | $366.16 | $330K | |
| Natalie Glance - Officer | Open-market sale | Class A Common Stock | 702 | $367.44 | $258K | |
| Natalie Glance - Officer | Open-market sale | Class A Common Stock | 169 | $368.44 | $62K | |
| Natalie Glance - Officer | Open-market sale | Class A Common Stock | 400 | $369.87 | $148K | |
| Natalie Glance - Officer | Gift | Class A Common Stock | 187 | $0.00 | - | |
| Stephen C. Chen - Officer | Gift | Class A Common Stock | 750 | $0.00 | - | |
| Robert Meese - Officer | Open-market sale | Class A Common Stock | 1,444 | $329.03 | $475K | |
| Natalie Glance - Officer | Open-market sale | Class A Common Stock | 2,533 | $329.03 | $833K | |
| Matthew Skaruppa - Officer | Open-market sale | Class A Common Stock | 2,797 | $329.03 | $920K | |
| Matthew Skaruppa - Officer | Gift | Class A Common Stock | 2,522 | $0.00 | - | |
| Natalie Glance - Officer | Gift | Class A Common Stock | 2,300 | $0.00 | - |
A Form 144 is notice of an INTENDED sale, not a completed one. It often precedes the Form 4 that reports the trade actually happening.
| Filed | Filer | Relationship | Shares | Market value | Notice |
|---|---|---|---|---|---|
| NATALIE GLANCE | Officer | 1,539 | $200K | View on EDGAR | |
| ROBERT MEESE | Officer | 1,354 | $175K | View on EDGAR | |
| STEPHEN CHEN | Officer | 1,024 | $132K | View on EDGAR |
Duolingo, Inc. (DUOL) had 16 insider filings in the last 90 days, with the most recent on 2026-08-19. The full record for DUOL runs to 88 Form 4 filings, the earliest from 2024-10-03. InsiderAlpha tracks every Form 4, Form 144, and 8-K filing in real time.
No insider purchases of DUOL were filed in the last 90 days. 1 purchase is on record for this company.
5 insider sales of DUOL were filed in the last 90 days, totaling $874K.
This page tracks DUOL Form 4 insider transactions, Form 144 sale notices, and 8-K material event disclosures in one timeline. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.
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Every Form 4 below links to the original document on SEC EDGAR, so the numbers on this page can be checked against the filing they came from.
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