Duolingo CTO's $4.7M Stock Sale Shows Tech Giant's Impressive Value Growth
Filing Impact
Filing Sentiment
Form Type
4
Rhea-AI Filing Summary
Duolingo CTO and Co-Founder Severin Hacker executed multiple stock transactions on June 20, 2025, as reported in this Form 4 filing. The transactions included:
- Exercise of stock options for 10,000 shares at $38.08 per share
- Conversion of Class B shares to Class A shares
- Sale of 10,000 Class A shares in multiple transactions at prices ranging from $465.82 to $481.35
Following these transactions, Hacker holds 72 Class A shares directly and 105,252 stock options. Additionally, he maintains indirect ownership of 2,896,917 Class B shares through the SBH Trust. The sales were executed under a Rule 10b5-1 trading plan established on September 11, 2024. Hacker maintains significant ownership as a Director, 10% Owner, and Chief Technology Officer.
Positive
- None.
Negative
- Co-founder and CTO Severin Hacker sold approximately 10,000 shares at prices ranging from $465-481 per share (total value ~$4.7M) through a pre-planned 10b5-1 trading plan, though retains significant indirect ownership of 2.89M shares through a trust
Insider Trade Summary
Net Seller: 10,000 shares ($4,711,993)
Net Sell
17 txns
Insider
Hacker Severin
Role
Chief Tech Officer, Co-Founder
Sold
10,000 shs ($4.71M)
| Type | Security | Shares | Price | Value |
|---|---|---|---|---|
| Exercise | Stock Option (Right to Buy) | 10,000 | $0.00 | -- |
| Conversion | Class B Common Stock | 10,000 | $0.00 | -- |
| Conversion | Class B Common Stock | 10,000 | $0.00 | -- |
| Conversion | Class A Common Stock | 10,000 | $38.08 | $381K |
| Sale | Class A Common Stock | 300 | $466.4291 | $140K |
| Sale | Class A Common Stock | 900 | $467.4567 | $421K |
| Sale | Class A Common Stock | 1,017 | $468.3994 | $476K |
| Sale | Class A Common Stock | 2,183 | $469.5542 | $1.03M |
| Sale | Class A Common Stock | 1,401 | $470.3874 | $659K |
| Sale | Class A Common Stock | 1,199 | $471.4536 | $565K |
| Sale | Class A Common Stock | 928 | $472.5353 | $439K |
| Sale | Class A Common Stock | 272 | $473.4595 | $129K |
| Sale | Class A Common Stock | 500 | $474.6529 | $237K |
| Sale | Class A Common Stock | 700 | $476.4716 | $334K |
| Sale | Class A Common Stock | 400 | $478.12 | $191K |
| Sale | Class A Common Stock | 200 | $481.35 | $96K |
| holding | Class B Common Stock | -- | -- | -- |
Holdings After Transaction:
Stock Option (Right to Buy) — 105,252 shares (Direct);
Class B Common Stock — 96,075 shares (Direct);
Class A Common Stock — 10,072 shares (Direct);
Class B Common Stock — 2,896,917 shares (Indirect, See footnote)
Footnotes (1)
- The sale was effected pursuant to the Reporting Person's Rule 10b5-1 trading plan adopted on September 11, 2024. 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 $465.82 to $466.69, 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. 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 $466.97 to $467.91, 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. 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 $468.00 to $468.99, 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. 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 $469.00 to $469.99, 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. 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 $470.10 to $471.06, 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. 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 $471.10 to $471.92, 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. 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 $472.12 to $473.09, 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. 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 $473.12 to $473.89, 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. 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 $474.41 to $474.91, 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. 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 $475.99 to $476.90, 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. 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 $477.81 to $478.53, 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. The shares subject to the option are fully vested and exercisable. 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. Shares held by SBH Trust dated March 10, 2020, of which Reporting Person is Trustee.
