Severin Hacker insider trades: Duolingo (DUOL) stock sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Severin reports to the SEC
Open-market buys and sales
56 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Nov 19, 2025 | DUOL | ↓ Sell | 10,000 | $172.74 | $1.7M | Direct | Nov 20, 2025 (1d) |
| Nov 4, 2025 | DUOL | ↓ Sell | 10,000 | $263.13 | $2.6M | Direct | Nov 6, 2025 (2d) |
| Oct 20, 2025 | DUOL | ↓ Sell10b5-1 | 10,000 | $314.72 | $3.1M | Direct | Oct 22, 2025 (2d) |
| Oct 6, 2025 | DUOL | ↓ Sell | 10,000 | $321.63 | $3.2M | Direct | Oct 7, 2025 (1d) |
| Sep 19, 2025 | DUOL | ↓ Sell | 10,000 | $288.94 | $2.9M | Direct | Sep 22, 2025 (3d) |
| Sep 5, 2025 | DUOL | ↓ Sell | 10,000 | $268.55 | $2.7M | Direct | Sep 9, 2025 (4d) |
| Aug 19, 2025 | DUOL | ↓ Sell | 10,000 | $344.56 | $3.4M | Direct | Aug 21, 2025 (2d) |
| Aug 5, 2025 | DUOL | ↓ Sell | 10,000 | $344.41 | $3.4M | Direct | Aug 7, 2025 (2d) |
| Jul 21, 2025 | DUOL | ↓ Sell | 10,000 | $360.33 | $3.6M | Direct | Jul 22, 2025 (1d) |
| Jul 7, 2025 | DUOL | ↓ Sell | 10,000 | $392.89 | $3.9M | Direct | Jul 9, 2025 (2d) |
| Jun 20, 2025 | DUOL | ↓ Sell | 10,000 | $471.20 | $4.7M | Direct | Jun 23, 2025 (3d) |
| Jun 5, 2025 | DUOL | ↓ Sell | 10,000 | $525.10 | $5.3M | Direct | Jun 9, 2025 (4d) |
| May 19, 2025 | DUOL | ↓ Sell | 10,000 | $524.70 | $5.2M | Direct | May 20, 2025 (1d) |
| May 5, 2025 | DUOL | ↓ Sell | 10,000 | $495.95 | $5.0M | Direct | May 7, 2025 (2d) |
| Apr 21, 2025 | DUOL | ↓ Sell | 10,000 | $314.36 | $3.1M | Direct | Apr 23, 2025 (2d) |
| Apr 7, 2025 | DUOL | ↓ Sell | 10,000 | $292.43 | $2.9M | Direct | Apr 9, 2025 (2d) |
| Mar 19, 2025 | DUOL | ↓ Sell | 10,000 | $298.25 | $3.0M | Direct | Mar 21, 2025 (2d) |
| Mar 5, 2025 | DUOL | ↓ Sell | 10,000 | $290.54 | $2.9M | Direct | Mar 6, 2025 (1d) |
| Feb 19, 2025 | DUOL | ↓ Sell | 10,000 | $433.94 | $4.3M | Direct | Feb 21, 2025 (2d) |
| Feb 5, 2025 | DUOL | ↓ Sell | 10,000 | $391.46 | $3.9M | Direct | Feb 6, 2025 (1d) |
| Jan 21, 2025 | DUOL | ↓ Sell | 10,000 | $333.95 | $3.3M | Direct | Jan 23, 2025 (2d) |
| Jan 6, 2025 | DUOL | ↓ Sell | 10,000 | $336.23 | $3.4M | Direct | Jan 7, 2025 (1d) |
| Dec 19, 2024 | DUOL | ↓ Sell | 10,000 | $336.82 | $3.4M | Direct | Dec 20, 2024 (1d) |
| Dec 13, 2024 | DUOL | ↓ Sell | 43,826 | $338.75 | $14.8M | Direct | Dec 16, 2024 (3d) |
| Dec 12, 2024 | DUOL | ↓ Sell | 41,521 | $340.29 | $14.1M | Direct | Dec 13, 2024 (1d) |
| Dec 11, 2024 | DUOL | ↓ Sell | 188,901 | $339.54 | $64.1M | Direct | Dec 13, 2024 (2d) |
| Aug 1, 2024 | DUOL | ↓ Sell | 10,000 | $166.49 | $1.7M | Indirect | Aug 2, 2024 (1d) |
| Jul 1, 2024 | DUOL | ↓ Sell | 10,000 | $198.61 | $2.0M | Indirect | Jul 2, 2024 (1d) |
| Jun 3, 2024 | DUOL | ↓ Sell | 10,000 | $196.39 | $2.0M | Indirect | Jun 5, 2024 (2d) |
| May 1, 2024 | DUOL | ↓ Sell | 10,000 | $223.47 | $2.2M | Indirect | May 3, 2024 (2d) |
| Apr 1, 2024 | DUOL | ↓ Sell | 10,000 | $218.42 | $2.2M | Indirect | Apr 2, 2024 (1d) |
| Mar 1, 2024 | DUOL | ↓ Sell | 10,000 | $235.13 | $2.4M | Indirect | Mar 4, 2024 (3d) |
| Feb 1, 2024 | DUOL | ↓ Sell | 10,000 | $178.62 | $1.8M | Indirect | Feb 5, 2024 (4d) |
| Jan 2, 2024 | DUOL | ↓ Sell | 10,000 | $214.25 | $2.1M | Indirect | Jan 3, 2024 (1d) |
| Dec 1, 2023 | DUOL | ↓ Sell | 10,000 | $212.87 | $2.1M | Indirect | Dec 4, 2023 (3d) |
| Nov 1, 2023 | DUOL | ↓ Sell | 10,000 | $146.57 | $1.5M | Indirect | Nov 2, 2023 (1d) |
| Oct 2, 2023 | DUOL | ↓ Sell | 10,000 | $165.26 | $1.7M | Indirect | Oct 5, 2023 (3d) |
| Sep 1, 2023 | DUOL | ↓ Sell | 10,000 | $148.80 | $1.5M | Indirect | Sep 6, 2023 (5d) |
| May 1, 2023 | DUOL | ↓ Sell | 10,000 | $138.35 | $1.4M | Indirect | May 2, 2023 (1d) |
| Apr 3, 2023 | DUOL | ↓ Sell | 10,000 | $142.26 | $1.4M | Indirect | Apr 4, 2023 (1d) |
| Mar 1, 2023 | DUOL | ↓ Sell | 10,000 | $108.22 | $1.1M | Indirect | Mar 2, 2023 (1d) |
| Feb 1, 2023 | DUOL | ↓ Sell | 10,000 | $95.59 | $956K | Indirect | Feb 2, 2023 (1d) |
| Jan 10, 2023 | DUOL | ↓ Sell | 10,000 | $75.07 | $751K | Indirect | Jan 11, 2023 (1d) |
| Dec 14, 2022 | DUOL | ↓ Sell | 10,000 | $75.50 | $755K | Indirect | Dec 15, 2022 (1d) |
| Nov 1, 2022 | DUOL | ↓ Sell | 10,000 | $81.81 | $818K | Indirect | Nov 2, 2022 (1d) |
| Oct 3, 2022 | DUOL | ↓ Sell | 10,000 | $96.54 | $965K | Indirect | Oct 4, 2022 (1d) |
| Sep 1, 2022 | DUOL | ↓ Sell | 10,000 | $92.09 | $921K | Indirect | Sep 6, 2022 (5d) |
| Aug 1, 2022 | DUOL | ↓ Sell | 10,000 | $94.26 | $943K | Indirect | Aug 2, 2022 (1d) |
| Jul 1, 2022 | DUOL | ↓ Sell | 10,000 | $91.22 | $912K | Indirect | Jul 5, 2022 (4d) |
| Jun 23, 2022 | DUOL | ↓ Sell | 20,000 | $98.39 | $2.0M | Indirect | Jun 27, 2022 (4d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other DUOL insiders
Open-market trades in the last 12 months
About Severin Hacker's insider trades
Severin Hacker is Chief Tech Officer, Co-Founder at Duolingo (DUOL). Since Jul 30, 2021, Severin has reported no open-market purchases and 56 sales worth $225.1M on SEC Form 4. In the last 12 months: 1 sale ($1.7M).
1 sale (1% of the value sold) was made under a Rule 10b5-1 trading plan, which is set up months in advance and runs on a schedule, so it says little about how the insider sees the stock today.
Their filings also include conversions (64 filings), option exercises (34 filings), gifts (10 filings), shares withheld for taxes (7 filings). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every DUOL insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.