DUOL · Duolingo, Inc.
← all insidersServices-Prepackaged Software · Listed on Nasdaq
Open-market insider flow over 30d · 90d · 180d · 365d · filter in table · CSV · JSON
Open-market trades18
Distinct insiders4
Bought$0
Sold$3.40M
Net flow$-3.40M
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)
| Filed ↓Date the Form 4 was filed with the SEC (due within 2 business days of the trade). | Insider | Role | CodeSEC 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 ▼). | Shares | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026-09-10 | GORDON WILLIAM B | Director | S | ▼ sell10b5-1 | 1000 | $151.64 | $15.2K | 68,415 | −0.1% | −<0.01% (now 0.41%) | filing |
| 2026-09-10 | GORDON WILLIAM B | Director | S | ▼ sell10b5-1 | 2000 | $148.68 | $29.7K | 68,515 | −0.3% | −<0.01% (now 0.41%) | filing |
| 2026-09-10 | GORDON WILLIAM B | Director | S | ▼ sell10b5-1 | 2,6750 | $146.58 | $392.1K | 68,715 | −4% | −0.02% (now 0.41%) | filing |
| 2026-09-10 | GORDON WILLIAM B | Director | S | ▼ sell10b5-1 | 3,4830 | $145.91 | $508.2K | 71,390 | −5% | −0.02% (now 0.43%) | filing |
| 2026-09-10 | GORDON WILLIAM B | Director | S | ▼ sell10b5-1 | 2,7420 | $144.59 | $396.5K | 74,873 | −4% | −0.02% (now 0.45%) | filing |
| 2026-09-10 | GORDON WILLIAM B | Director | S | ▼ sell10b5-1 | 8000 | $143.83 | $115.1K | 77,615 | −1% | −<0.01% (now 0.47%) | filing |
| 2026-08-19 | Glance Natalie | Officer (Chief Engineering Officer) | S | ▼ sell10b5-1 | 1,0370 | $138.19 | $143.3K | 169,111 | −0.6% | −<0.01% (now 1.0%) | filing |
| 2026-08-19 | Glance Natalie | Officer (Chief Engineering Officer) | S | ▼ sell10b5-1 | 5020 | $137.01 | $68.8K | 170,148 | −0.3% | −<0.01% (now 1.0%) | filing |
| 2026-08-19 | Glance Natalie | Officer (Chief Engineering Officer) | S | ▼ sell10b5-1 | 2,7510 | $129.13 | $355.2K | 170,650 | −2% | −0.02% (now 1.0%) | filing |
| 2026-08-19 | Meese Robert | Officer (Chief Business Officer) | S | ▼ sell | 1,3540 | $129.13 | $174.8K | 169,391 | −0.8% | −<0.01% (now 1.0%) | filing |
| 2026-08-19 | Chen Stephen C. | Officer (General Counsel) | S | ▼ sell | 1,0240 | $129.13 | $132.2K | 51,841 | −2% | −<0.01% (now 0.31%) | filing |
| 2026-08-12 | KRAWCHECK SALLIE | Director | A | ▲ buy | 3,2800 | — | — | 4,592 | 3.5× | +0.02% (now 0.03%) | filing |
| 2026-08-12 | KRAWCHECK SALLIE | Director | A | ▲ buy | 1,3120 | — | — | 1,312 | new | +<0.01% (now <0.01%) | filing |
| 2026-07-14 | Bohutinsky Amy | Director | A | ▲ buy | 1300 | $124.76 | $16.2K | 7,658 | +2% | +<0.01% (now 0.05%) | filing |
| 2026-07-14 | Schlosser Mario | Director | A | ▲ buy | 1400 | $124.76 | $17.5K | 4,262 | +3% | +<0.01% (now 0.03%) | filing |
| 2026-07-14 | Lilly III John Osborne | Director | A | ▲ buy | 1180 | $124.76 | $14.7K | 9,023 | +1% | +<0.01% (now 0.05%) | filing |
| 2026-07-14 | Shelton James H | Director | A | ▲ buy | 1200 | $124.76 | $15.0K | 11,753 | +1% | +<0.01% (now 0.07%) | filing |
| 2026-06-18 | Chen Stephen C. | Officer (General Counsel) | M | ▼ sell | 58→ 58 Class A Common Stock | — | — | 0 | — | — | filing |
| 2026-06-18 | Chen Stephen C. | Officer (General Counsel) | M | ▲ buy | 580 | $14.42 | $836 | 52,865 | +0.1% | +<0.01% (now 0.32%) | filing |
| 2026-06-05 | Shelton James H | Director | A | ▲ buy | 2,0010 | — | — | 11,633 | +21% | +0.01% (now 0.07%) | filing |
| 2026-06-05 | Lilly III John Osborne | Director | A | ▲ buy | 2,0010 | — | — | 8,905 | +29% | +0.01% (now 0.05%) | filing |
| 2026-06-05 | GORDON WILLIAM B | Director | A | ▲ buy | 2,0010 | — | — | 78,415 | +3% | +0.01% (now 0.47%) | filing |
| 2026-06-05 | Schlosser Mario | Director | A | ▲ buy | 2,0010 | — | — | 4,122 | +94% | +0.01% (now 0.02%) | filing |
| 2026-06-05 | Ross Bonnie | Director | A | ▲ buy | 2,0010 | — | — | 3,345 | 2.5× | +0.01% (now 0.02%) | filing |
| 2026-06-05 | Clemens Sara | Director | A | ▲ buy | 2,0010 | — | — | 5,955 | +51% | +0.01% (now 0.04%) | filing |
| 2026-06-05 | Bohutinsky Amy | Director | A | ▲ buy | 2,0010 | — | — | 7,528 | +36% | +0.01% (now 0.05%) | filing |
| 2026-05-29 | Hacker Severin | Director, Officer (Chief Tech Officer, Co-Founder), 10% owner | F | ▼ sell | 31,920→ 31,920 Class A Common Stock | $107.82 | $3.44M | 205,273 | — | — | filing |
| 2026-05-29 | Hacker Severin | Director, Officer (Chief Tech Officer, Co-Founder), 10% owner | M | ▲ buy | 60,000→ 60,000 Class A Common Stock | — | — | 237,193 | — | — | filing |
| 2026-05-29 | Hacker Severin | Director, Officer (Chief Tech Officer, Co-Founder), 10% owner | M | ▼ sell | 60,000→ 60,000 Class B Common Stock | — | — | 210,000 | — | — | filing |
| 2026-05-29 | von Ahn Luis | Director, Officer (President & CEO, Co-Founder), 10% owner | F | ▼ sell | 54,875→ 54,875 Class A Common Stock | $107.82 | $5.92M | 3,368,120 | — | — | filing |
| 2026-05-29 | von Ahn Luis | Director, Officer (President & CEO, Co-Founder), 10% owner | M | ▲ buy | 120,000→ 120,000 Class A Common Stock | — | — | 3,422,995 | — | — | filing |
| 2026-05-29 | von Ahn Luis | Director, Officer (President & CEO, Co-Founder), 10% owner | M | ▼ sell | 120,000→ 120,000 Class B Common Stock | — | — | 420,000 | — | — | filing |
| 2026-05-19 | Glance Natalie | Officer (Chief Engineering Officer) | S | ▼ sell10b5-1 | 1,3000 | $114.19 | $148.4K | 173,401 | −0.7% | −<0.01% (now 1.0%) | filing |
| 2026-05-19 | Glance Natalie | Officer (Chief Engineering Officer) | S | ▼ sell10b5-1 | 2,0600 | $113.21 | $233.2K | 174,701 | −1% | −0.01% (now 1.0%) | filing |
| 2026-05-19 | Glance Natalie | Officer (Chief Engineering Officer) | S | ▼ sell10b5-1 | 1,9290 | $112.16 | $216.4K | 176,761 | −1% | −0.01% (now 1.1%) | filing |
| 2026-05-19 | Glance Natalie | Officer (Chief Engineering Officer) | A | ▲ buy10b5-1 | 39,0580 | $112.06 | $4.38M | 178,690 | +28% | +0.23% (now 1.1%) | filing |
| 2026-05-19 | Meese Robert | Officer (Chief Business Officer) | S | ▼ sell | 1,4200 | $112.16 | $159.3K | 170,745 | −0.8% | −<0.01% (now 1.0%) | filing |
| 2026-05-19 | Meese Robert | Officer (Chief Business Officer) | A | ▲ buy | 19,5290 | $112.06 | $2.19M | 172,165 | +13% | +0.12% (now 1.0%) | filing |
| 2026-05-19 | Chen Stephen C. | Officer (General Counsel) | S | ▼ sell10b5-1 | 7000 | $114.22 | $80.0K | 52,807 | −1% | −<0.01% (now 0.32%) | filing |
| 2026-05-19 | Chen Stephen C. | Officer (General Counsel) | S | ▼ sell10b5-1 | 1,2770 | $113.27 | $144.6K | 53,507 | −2% | −<0.01% (now 0.32%) | filing |
| 2026-05-19 | Chen Stephen C. | Officer (General Counsel) | S | ▼ sell10b5-1 | 8200 | $112.16 | $92.0K | 54,784 | −1% | −<0.01% (now 0.33%) | filing |
| 2026-05-19 | Chen Stephen C. | Officer (General Counsel) | A | ▲ buy10b5-1 | 24,4110 | $112.06 | $2.74M | 55,604 | +78% | +0.15% (now 0.33%) | filing |
| 2026-05-13 | von Ahn Luis | Director, Officer (President & CEO, Co-Founder), 10% owner | C | ▼ sell | 50,000→ 50,000 Class A Common Stock | — | — | 3,302,995 | — | — | filing |
| 2026-05-13 | von Ahn Luis | Director, Officer (President & CEO, Co-Founder), 10% owner | G | ▼ sell | 50,0000 | — | — | 0 | −100% | −0.30% (now 0%) | filing |
| 2026-05-13 | von Ahn Luis | Director, Officer (President & CEO, Co-Founder), 10% owner | C | ▲ buy | 50,0000 | — | — | 50,000 | new | +0.30% (now 0.30%) | filing |
| 2026-05-13 | Chen Stephen C. | Officer (General Counsel) | M | ▼ sell | 648→ 648 Class A Common Stock | — | — | 58 | — | — | filing |
| 2026-05-13 | Chen Stephen C. | Officer (General Counsel) | M | ▲ buy | 6480 | $14.42 | $9.3K | 31,193 | +2% | +<0.01% (now 0.19%) | filing |
| 2026-03-27 | Munson Gillian | Officer (Chief Financial Officer) | A | ▲ buy | 133,7530 | — | — | 137,662 | 35× | +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.