| 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 | 19 Nov 2025 | 0001870350 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | DUOL | Class A Common Stock | Sale | -$451K | -2.53K | -2.18% | $177.95 | 114K | 17 Nov 2025 | Direct | F1 |
| transaction | DUOL | Class A Common Stock | Sale | -$27.8K | -160 | -0.14% | $173.80 | 113K | 18 Nov 2025 | Direct | F2, F3 |
| transaction | DUOL | Class A Common Stock | Sale | -$130K | -741 | -0.65% | $174.97 | 113K | 18 Nov 2025 | Direct | F2, F4 |
| transaction | DUOL | Class A Common Stock | Sale | -$149K | -850 | -0.75% | $175.73 | 112K | 18 Nov 2025 | Direct | F2, F5 |
| transaction | DUOL | Class A Common Stock | Sale | -$99.1K | -560 | -0.5% | $177.00 | 111K | 18 Nov 2025 | Direct | F2, F6 |
| transaction | DUOL | Class A Common Stock | Sale | -$28.4K | -160 | -0.14% | $177.60 | 111K | 18 Nov 2025 | Direct | F2, F7 |
| holding | DUOL | Class A Common Stock | 130 | 17 Nov 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 | Represents shares automatically sold to satisfy tax withholding obligations in connection with the vesting of Restricted Stock Units ("RSUs") and delivery of shares. |
| F2 | The sale was effected pursuant to the Reporting Person's Rule 10b5-1 trading plan adopted on November 14, 2024. |
| 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 $173.36 to $174.21, 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. |
| 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 $174.39 to $175.38, 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 $175.40 to $176.35, 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 $176.45 to $177.33, 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. |
| 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 $177.51 to $177.74, 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. |