investing-statsSEC Form 4 insider transactions

DUOL · Duolingo, Inc.

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Services-Prepackaged Software · Listed on Nasdaq

Open-market insider flow over 30d · 90d · 180d · 365d · filter in table · CSV · JSON

Open-market trades11
Distinct insiders4
Bought$0
Sold$2.33M
Net flow$-2.33M

Recent filings

How to read this

Filed
Date the Form 4 was filed with the SEC. Insiders must file within 2 business days of the trade.
Ticker
The issuer's stock symbol. Select it to open that company's insider-activity page.
Issuer
The company whose shares were traded.
Sector
The issuer's industry (SEC SIC classification). Select a value to filter to that sector.
Insider
The reporting person: an officer, director, or 10% owner. Select a name to see all of their trades.
Role
The insider's relationship to the company: director, officer, or 10% owner.
Code
SEC transaction code describing the kind of transaction. Full official definitions are under “Transaction codes” below. A dot marks an open-market trade (P/S), the highest-conviction signal.
Side
Direction of the trade, from the filing's Acquired (A) ▲ / Disposed of (D) ▼ field: a buy or a sell.
10b5-1
Trade made under a pre-arranged Rule 10b5-1 plan: scheduled in advance, not a discretionary decision (generally lower signal).
Shares
Number of shares in this transaction.
Price
Reported price per share. Blank for grants, gifts, and other trades with no stated price.
Value
Transaction value = shares × price. Left blank for grants, option exercises, gifts, and conversions, which have no cash price (see Own Δ for their impact).
Owned after
Form 4 column “Amount of Securities Beneficially Owned Following Reported Transaction(s)”: shares the insider held (directly or indirectly) immediately after this trade.
Own Δ
How much this trade changed the insider's own holding versus what they held just before it (not a share of the company). +45% grew it by 45%, 2.0× more than doubled it, −100% sold the entire stake, “new” built a position from nothing.
Co. Δ
Change in the insider's stake as a share of the whole company from this trade (transaction shares ÷ shares outstanding). The “(now …)” figure is their resulting total stake. Based on the latest reported shares outstanding; blank when unavailable.
D/I
Form 4 column “Ownership Form: Direct (D) or Indirect (I)”. Indirect holdings (for example, through a trust, fund, or family member) are detailed in the filing's “Nature of Indirect Beneficial Ownership.”
Lag
Days from the trade date to the filing date (Form 4 is due within 2 business days).

Transaction codes

Verbatim from the SEC's General Instructions for Forms 3, 4 and 5.

P
Open market or private purchase of non-derivative or derivative security
S
Open market or private sale of non-derivative or derivative security
A
Grant, award or other acquisition pursuant to Rule 16b-3(d)
D
Disposition to the issuer of issuer equity securities pursuant to Rule 16b-3(e)
F
Payment of exercise price or tax liability by delivering or withholding securities incident to the receipt, exercise or vesting of a security issued in accordance with Rule 16b-3
M
Exercise or conversion of derivative security exempted pursuant to Rule 16b-3
G
Bona fide gift
C
Conversion of derivative security
X
Exercise of in-the-money or at-the-money derivative security
J
Other acquisition or disposition (describe transaction)
Recent Form 4 filings for DUOL
FiledDate the Form 4 was filed with the SEC (due within 2 business days of the trade).InsiderRoleCodeSEC transaction code describing the kind of transaction. See “How to read this” above for the official SEC definition of each code. The dot marks an open-market trade (P/S).SideDirection of the trade: a buy (acquired ▲) or a sell (disposed ▼).SharesNumber of shares in this transaction.PriceReported price per share. Blank for trades with no stated price.ValueTransaction value = shares × price. Left blank for grants, option exercises, gifts, and conversions, which have no cash price (see Own Δ).Owned afterShares the insider held (directly or indirectly) immediately after this trade.Own ΔHow much this trade changed the insider's own holding versus what they held just before it (not a share of the company). +45% grew it by 45%, 2.0× more than doubled it, −100% sold the entire stake, “new” built a position from nothing.Co. ΔChange in the insider's stake as a share of the whole company from this trade (transaction shares ÷ shares outstanding). The “(now …)” figure is their resulting total stake in the company. Based on the latest reported shares outstanding; blank when unavailable.Link to SEC filing
2026-09-10GORDON WILLIAM BDirectorS sell10b5-11000$151.64$15.2K68,415−0.1%−<0.01% (now 0.41%)filing
2026-09-10GORDON WILLIAM BDirectorS sell10b5-12000$148.68$29.7K68,515−0.3%−<0.01% (now 0.41%)filing
2026-09-10GORDON WILLIAM BDirectorS sell10b5-12,6750$146.58$392.1K68,715−4%−0.02% (now 0.41%)filing
2026-09-10GORDON WILLIAM BDirectorS sell10b5-13,4830$145.91$508.2K71,390−5%−0.02% (now 0.43%)filing
2026-09-10GORDON WILLIAM BDirectorS sell10b5-12,7420$144.59$396.5K74,873−4%−0.02% (now 0.45%)filing
2026-09-10GORDON WILLIAM BDirectorS sell10b5-18000$143.83$115.1K77,615−1%−<0.01% (now 0.47%)filing
2026-08-19Glance NatalieOfficer (Chief Engineering Officer)S sell10b5-11,0370$138.19$143.3K169,111−0.6%−<0.01% (now 1.0%)filing
2026-08-19Glance NatalieOfficer (Chief Engineering Officer)S sell10b5-15020$137.01$68.8K170,148−0.3%−<0.01% (now 1.0%)filing
2026-08-19Glance NatalieOfficer (Chief Engineering Officer)S sell10b5-12,7510$129.13$355.2K170,650−2%−0.02% (now 1.0%)filing
2026-08-19Meese RobertOfficer (Chief Business Officer)S sell1,3540$129.13$174.8K169,391−0.8%−<0.01% (now 1.0%)filing
2026-08-19Chen Stephen C.Officer (General Counsel)S sell1,0240$129.13$132.2K51,841−2%−<0.01% (now 0.31%)filing
2026-05-19Glance NatalieOfficer (Chief Engineering Officer)S sell10b5-11,3000$114.19$148.4K173,401−0.7%−<0.01% (now 1.0%)filing
2026-05-19Glance NatalieOfficer (Chief Engineering Officer)S sell10b5-12,0600$113.21$233.2K174,701−1%−0.01% (now 1.0%)filing
2026-05-19Glance NatalieOfficer (Chief Engineering Officer)S sell10b5-11,9290$112.16$216.4K176,761−1%−0.01% (now 1.1%)filing
2026-05-19Meese RobertOfficer (Chief Business Officer)S sell1,4200$112.16$159.3K170,745−0.8%−<0.01% (now 1.0%)filing
2026-05-19Chen Stephen C.Officer (General Counsel)S sell10b5-17000$114.22$80.0K52,807−1%−<0.01% (now 0.32%)filing
2026-05-19Chen Stephen C.Officer (General Counsel)S sell10b5-11,2770$113.27$144.6K53,507−2%−<0.01% (now 0.32%)filing
2026-05-19Chen Stephen C.Officer (General Counsel)S sell10b5-18200$112.16$92.0K54,784−1%−<0.01% (now 0.33%)filing
2026-06-18Chen Stephen C.Officer (General Counsel)M sell58 58 Class A Common Stock0filing
2026-06-18Chen Stephen C.Officer (General Counsel)M buy580$14.42$83652,865+0.1%+<0.01% (now 0.32%)filing
2026-05-29Hacker SeverinDirector, Officer (Chief Tech Officer, Co-Founder), 10% ownerM buy60,000 60,000 Class A Common Stock237,193filing
2026-05-29Hacker SeverinDirector, Officer (Chief Tech Officer, Co-Founder), 10% ownerM sell60,000 60,000 Class B Common Stock210,000filing
2026-05-29von Ahn LuisDirector, Officer (President & CEO, Co-Founder), 10% ownerM buy120,000 120,000 Class A Common Stock3,422,995filing
2026-05-29von Ahn LuisDirector, Officer (President & CEO, Co-Founder), 10% ownerM sell120,000 120,000 Class B Common Stock420,000filing
2026-05-13Chen Stephen C.Officer (General Counsel)M sell648 648 Class A Common Stock58filing
2026-05-13Chen Stephen C.Officer (General Counsel)M buy6480$14.42$9.3K31,193+2%+<0.01% (now 0.19%)filing
2026-05-13von Ahn LuisDirector, Officer (President & CEO, Co-Founder), 10% ownerG sell50,00000−100%−0.30% (now 0%)filing
2026-05-29Hacker SeverinDirector, Officer (Chief Tech Officer, Co-Founder), 10% ownerF sell31,920 31,920 Class A Common Stock$107.82$3.44M205,273filing
2026-05-29von Ahn LuisDirector, Officer (President & CEO, Co-Founder), 10% ownerF sell54,875 54,875 Class A Common Stock$107.82$5.92M3,368,120filing
2026-05-13von Ahn LuisDirector, Officer (President & CEO, Co-Founder), 10% ownerC sell50,000 50,000 Class A Common Stock3,302,995filing
2026-05-13von Ahn LuisDirector, Officer (President & CEO, Co-Founder), 10% ownerC buy50,000050,000new+0.30% (now 0.30%)filing
2026-08-12KRAWCHECK SALLIEDirectorA buy3,28004,5923.5×+0.02% (now 0.03%)filing
2026-08-12KRAWCHECK SALLIEDirectorA buy1,31201,312new+<0.01% (now <0.01%)filing
2026-07-14Bohutinsky AmyDirectorA buy1300$124.76$16.2K7,658+2%+<0.01% (now 0.05%)filing
2026-07-14Schlosser MarioDirectorA buy1400$124.76$17.5K4,262+3%+<0.01% (now 0.03%)filing
2026-07-14Lilly III John OsborneDirectorA buy1180$124.76$14.7K9,023+1%+<0.01% (now 0.05%)filing
2026-07-14Shelton James HDirectorA buy1200$124.76$15.0K11,753+1%+<0.01% (now 0.07%)filing
2026-06-05Shelton James HDirectorA buy2,001011,633+21%+0.01% (now 0.07%)filing
2026-06-05Lilly III John OsborneDirectorA buy2,00108,905+29%+0.01% (now 0.05%)filing
2026-06-05GORDON WILLIAM BDirectorA buy2,001078,415+3%+0.01% (now 0.47%)filing
2026-06-05Schlosser MarioDirectorA buy2,00104,122+94%+0.01% (now 0.02%)filing
2026-06-05Ross BonnieDirectorA buy2,00103,3452.5×+0.01% (now 0.02%)filing
2026-06-05Clemens SaraDirectorA buy2,00105,955+51%+0.01% (now 0.04%)filing
2026-06-05Bohutinsky AmyDirectorA buy2,00107,528+36%+0.01% (now 0.05%)filing
2026-05-19Glance NatalieOfficer (Chief Engineering Officer)A buy10b5-139,0580$112.06$4.38M178,690+28%+0.23% (now 1.1%)filing
2026-05-19Meese RobertOfficer (Chief Business Officer)A buy19,5290$112.06$2.19M172,165+13%+0.12% (now 1.0%)filing
2026-05-19Chen Stephen C.Officer (General Counsel)A buy10b5-124,4110$112.06$2.74M55,604+78%+0.15% (now 0.33%)filing
2026-03-27Munson GillianOfficer (Chief Financial Officer)A buy133,7530137,66235×+0.80% (now 0.83%)filing

Up to 200 most recent filings · select a heading to sort, or open “How to read this” above for definitions · this company on SEC EDGAR.