| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Glance Natalie | Chief Engineering Officer | C/O DUOLINGO, INC., 5900 PENN AVENUE, PITTSBURGH | /s/ Stephen Chen, as Attorney-in-Fact for Natalie Glance | 2025-10-03 | 0001870350 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | DUOL | Class A Common Stock | Sale | -$30.1K | -100 | -0.08% | $300.56 | 119K | Oct 1, 2025 | Direct | F1 |
| transaction | DUOL | Class A Common Stock | Sale | -$144K | -475 | -0.4% | $303.74 | 119K | Oct 1, 2025 | Direct | F1, F2 |
| transaction | DUOL | Class A Common Stock | Sale | -$61K | -200 | -0.17% | $305.09 | 119K | Oct 1, 2025 | Direct | F1, F3 |
| transaction | DUOL | Class A Common Stock | Sale | -$184K | -600 | -0.51% | $306.51 | 118K | Oct 1, 2025 | Direct | F1, F4 |
| transaction | DUOL | Class A Common Stock | Sale | -$33.8K | -108 | -0.09% | $312.75 | 118K | Oct 1, 2025 | Direct | F1, F5 |
| transaction | DUOL | Class A Common Stock | Sale | -$94.6K | -300 | -0.25% | $315.28 | 118K | Oct 1, 2025 | Direct | F1, F6 |
| transaction | DUOL | Class A Common Stock | Sale | -$95K | -300 | -0.25% | $316.74 | 117K | Oct 1, 2025 | Direct | F1, F7 |
| transaction | DUOL | Class A Common Stock | Sale | -$191K | -600 | -0.51% | $317.96 | 117K | Oct 1, 2025 | Direct | F1, F8 |
| transaction | DUOL | Class A Common Stock | Sale | -$192K | -600 | -0.51% | $319.76 | 116K | Oct 1, 2025 | Direct | F1, F9 |
| holding | DUOL | Class A Common Stock | 130 | Oct 1, 2025 | By son |
Buy Plan / Sale Plan: These are also open market purchases/sales of shares, but in this case the transaction is part of a trading plan. Rule 10b5-1 allows insiders to setup a trading plan to buy/sell stocks over a certain period of time. Since the purchases/sales are predetermined, this protects the insiders from violating insider trading law.
Transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c).
| Id | Content |
|---|---|
| F1 | The sale was effected pursuant to the Reporting Person's Rule 10b5-1 trading plan adopted on November 14, 2024. |
| F2 | The price reported in Column 4 is a weighted average sale price calculated by the broker executing the sales. These shares were sold in multiple transactions at prices ranging from $303.45 to $304.06, inclusive. The Reporting Person hereby undertakes to provide to the Securities and Exchange Commission staff, the Issuer, or a security holder of the Issuer, upon request, full information regarding the number of shares sold at each respective price within the range set forth in this footnote. |
| F3 | The price reported in Column 4 is a weighted average sale price calculated by the broker executing the sales. These shares were sold in multiple transactions at prices ranging from $305.00 to $305.18, inclusive. The Reporting Person hereby undertakes to provide to the Securities and Exchange Commission staff, the Issuer, or a security holder of the Issuer, upon request, full information regarding the number of shares sold at each respective price within the range set forth in this footnote. |
| F4 | The price reported in Column 4 is a weighted average sale price calculated by the broker executing the sales. These shares were sold in multiple transactions at prices ranging from $306.00 to $306.99, inclusive. The Reporting Person hereby undertakes to provide to the Securities and Exchange Commission staff, the Issuer, or a security holder of the Issuer, upon request, full information regarding the number of shares sold at each respective price within the range set forth in this footnote. |
| F5 | The price reported in Column 4 is a weighted average sale price calculated by the broker executing the sales. These shares were sold in multiple transactions at prices ranging from $312.71 to $313.20, inclusive. The Reporting Person hereby undertakes to provide to the Securities and Exchange Commission staff, the Issuer, or a security holder of the Issuer, upon request, full information regarding the number of shares sold at each respective price within the range set forth in this footnote. |
| F6 | The price reported in Column 4 is a weighted average sale price calculated by the broker executing the sales. These shares were sold in multiple transactions at prices ranging from $315.01 to $315.65, inclusive. The Reporting Person hereby undertakes to provide to the Securities and Exchange Commission staff, the Issuer, or a security holder of the Issuer, upon request, full information regarding the number of shares sold at each respective price within the range set forth in this footnote. |
| F7 | The price reported in Column 4 is a weighted average sale price calculated by the broker executing the sales. These shares were sold in multiple transactions at prices ranging from $316.41 to $316.90, inclusive. The Reporting Person hereby undertakes to provide to the Securities and Exchange Commission staff, the Issuer, or a security holder of the Issuer, upon request, full information regarding the number of shares sold at each respective price within the range set forth in this footnote. |
| F8 | The price reported in Column 4 is a weighted average sale price calculated by the broker executing the sales. These shares were sold in multiple transactions at prices ranging from $317.51 to $318.33, inclusive. The Reporting Person hereby undertakes to provide to the Securities and Exchange Commission staff, the Issuer, or a security holder of the Issuer, upon request, full information regarding the number of shares sold at each respective price within the range set forth in this footnote. |
| F9 | The price reported in Column 4 is a weighted average sale price calculated by the broker executing the sales. These shares were sold in multiple transactions at prices ranging from $319.46 to $320.21, inclusive. The Reporting Person hereby undertakes to provide to the Securities and Exchange Commission staff, the Issuer, or a security holder of the Issuer, upon request, full information regarding the number of shares sold at each respective price within the range set forth in this footnote. |