Duolingo CEO sells 28,292 shares in plan trade
Duolingo CEO Luis von Ahn exercised options and sold Class A shares under a Rule 10b5-1 trading plan on September 16, 2026.
Rhea-AI Filing Summary
Duolingo, Inc. (DUOL) President & CEO and Co-Founder Luis von Ahn reported option exercises, share conversions, and sales on September 16, 2026. He exercised stock options for 23,040 shares at a $14.42 exercise price and 5,252 shares at $38.08, receiving Class B shares that were converted into Class A shares.
He then sold 27,272 Class A shares at a weighted average price of $150.1749 (in trades from $150.00–$150.54) and 1,020 Class A shares at a weighted average of $151.54 (from $151.53–$152.55), all under a Rule 10b5-1 trading plan adopted on June 2, 2026.
Positive
- None.
Negative
- None.
Insider Trade Summary 10b5-1
Exercise and sale activity reported; no spread calculated
Exercise and Sale
10 txns
Insider
von Ahn Luis
Role
President & CEO, Co-Founder
Sold
28,292 shs ($4.25M)
Approx. gross sale proceeds
$4.25M
| Type | Security | Shares | Price | Value |
|---|---|---|---|---|
| Exercise | Stock Option (Right to Buy) F4 | 23,040 | $0.00 | $0.00 |
| Conversion | Class B Common Stock F5 | 23,040 | $0.00 | $0.00 |
| Conversion | Class B Common Stock F5 | 23,040 | $0.00 | $0.00 |
| Exercise | Stock Option (Right to Buy) F4 | 5,252 | $0.00 | $0.00 |
| Conversion | Class B Common Stock F5 | 5,252 | $0.00 | $0.00 |
| Conversion | Class B Common Stock F5 | 5,252 | $0.00 | $0.00 |
| Conversion | Class A Common Stock | 23,040 | $14.42 | $332K |
| Conversion | Class A Common Stock | 5,252 | $38.08 | $200K |
| Sale | Class A Common Stock F1, F2 | 27,272 | $150.1749 | $4.10M |
| Sale | Class A Common Stock F1, F3 | 1,020 | $151.54 | $155K |
Holdings After Transaction:
Stock Option (Right to Buy) — 197,708 contracts (Direct);
Class B Common Stock — 3,368,120 contracts (Direct);
Class A Common Stock — 0 shares (Direct)
Footnotes (5)
- F1. The sale was effected pursuant to the Reporting Person's Rule 10b5-1 trading plan adopted on June 2, 2026.
- 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 $150.00 to $150.54, 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 $151.53 to $152.55, 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 shares subject to the option are fully vested and exercisable.
- F5. Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock in connection with: (i) any transfer, whether or not for value, except for certain permitted transfers further described in the Issuer's amended and restated certificate of incorporation, (ii) such time as the aggregate number of shares of Class B Common Stock outstanding ceases to represent 5% of the aggregate number of shares of Common Stock outstanding, and (iii) the death of the Reporting Person.
Key Figures
Class A shares sold: 28,292 shares
Sale weighted average price (larger block): $150.1749 per share
Sale weighted average price (smaller block): $151.54 per share
+4 more
7 metrics
Class A shares sold
28,292 shares
Total Class A Common Stock sold on September 16, 2026
Sale weighted average price (larger block)
$150.1749 per share
27,272 Class A shares; trades from $150.00 to $150.54
Sale weighted average price (smaller block)
$151.54 per share
1,020 Class A shares; trades from $151.53 to $152.55
Option exercise price
$14.42 per share
Stock option exercise for 23,040 underlying Class B shares
Option exercise price
$38.08 per share
Stock option exercise for 5,252 underlying Class B shares
Total derivative exercise shares
84,876 shares
Aggregate derivative exercises and conversions in this filing
Rule 10b5-1 plan adoption date
June 2, 2026
Trading plan under which the reported sales were effected
Key Terms
Rule 10b5-1 trading plan, weighted average sale price, Class B Common Stock, derivative security, +1 more
5 terms
Rule 10b5-1 trading plan regulatory
"The sale was effected pursuant to the Reporting Person's Rule 10b5-1 trading plan"
A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.
weighted average sale price financial
"The price reported in Column 4 is a weighted average sale price"
Class B Common Stock financial
"Each share of Class B Common Stock is convertible at any time"
A class B common stock is one of multiple types of a company’s ordinary shares that carries specific rights—often different voting power or dividend priority—compared with other classes. For investors it matters because those differences affect how much influence you have over company decisions, the income you might receive, and how freely the shares trade; think of it like owning a car with different keys: some keys let you start the engine and open the trunk, others only unlock the door.
derivative security financial
"Exercise or conversion of derivative security"
A derivative security is a financial contract whose value comes from the price or performance of something else, such as a stock, bond, commodity, or market index. For investors it acts like an insurance policy or a wager: it can be used to protect against losses, lock in prices, or amplify gains and losses, so it can change a portfolio’s risk and potential return without owning the underlying asset directly.
fully vested and exercisable financial
"The shares subject to the option are fully vested and exercisable"
FAQ
AI-generated questions and answers. How Rhea-AI works. Not financial advice.
What did Duolingo (DUOL) CEO Luis von Ahn report in this Form 4?
Luis von Ahn reported option exercises and share conversions into Class A Common Stock, followed by sales of 28,292 Class A shares on September 16, 2026, as detailed in multiple derivative and non-derivative transactions.
What option exercises did Luis von Ahn report for Duolingo (DUOL)?
He exercised stock options covering 23,040 shares of Class B Common Stock at an exercise price of $14.42 per share and 5,252 shares at $38.08 per share, with the options described as fully vested and exercisable in footnote F4.
AI-generated analysis. How Rhea-AI works. Not financial advice.
