Severin Hacker
Insider
First SEC filing: July 27, 2021 · Latest: May 29, 2026
Insider at
Insider transactions
0 buys (P)
44 sells (S)
Net: $-10,722,239
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| May 27, 2026 | DUOL | M | 60,000 | · | · | 210,000 Direct | -22.22% | Disposed | (price as of 2026-10-02) |
| May 27, 2026 | DUOL | M | 60,000 | · | · | 237,193 Direct | +33.86% | Acquired | (price as of 2026-10-02) |
| May 27, 2026 | DUOL | F | 31,920 | $107.82 | $3,441,614 | 205,273 Direct | -13.46% | Disposed | 33.8% (price as of 2026-10-02) |
| Feb. 17, 2026 | DUOL | M | 60,000 | · | · | 270,000 Direct | -18.18% | Disposed | (price as of 2026-10-02) |
| Feb. 17, 2026 | DUOL | M | 60,000 | · | · | 207,787 Direct | +40.60% | Acquired | (price as of 2026-10-02) |
| Feb. 17, 2026 | DUOL | F | 30,594 | $112.57 | $3,443,967 | 177,193 Direct | -14.72% | Disposed | 28.2% (price as of 2026-10-02) |
| Dec. 8, 2025 | DUOL | C | 50,000 | · | · | 50,072 Direct | +69444.44% | Acquired | (price as of 2026-10-02) |
| Dec. 8, 2025 | DUOL | G | 50,000 | · | · | 72 Direct | -99.86% | Disposed | (price as of 2026-10-02) |
| Dec. 8, 2025 | DUOL | C | 50,000 | · | · | 2,836,917 Indirect | -1.73% | Disposed | (price as of 2026-10-02) |
| Dec. 3, 2025 | DUOL | M | 5,252 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| Dec. 3, 2025 | DUOL | M | 5,252 | $38.08 | $199,996 | 147,787 Direct | +3.68% | Acquired | 278.9% (price as of 2026-10-02) |
| Dec. 1, 2025 | DUOL | M | 60,000 | · | · | 330,000 Direct | -15.38% | Disposed | (price as of 2026-10-02) |
| Dec. 1, 2025 | DUOL | M | 60,000 | · | · | 174,305 Direct | +52.49% | Acquired | (price as of 2026-10-02) |
| Dec. 1, 2025 | DUOL | F | 31,770 | $185.45 | $5,891,746 | 142,535 Direct | -18.23% | Disposed | -22.2% (price as of 2026-10-02) |
| Nov. 19, 2025 | DUOL | C | 10,000 | $38.08 | $380,800 | 10,072 Direct | +13888.89% | Acquired | 278.9% (price as of 2026-10-02) |
| Nov. 19, 2025 | DUOL | S 10b5-1 | 1,146 | $169.57 | $194,327 | 8,926 Direct | -11.38% | Disposed | -14.9% (price as of 2026-10-02) |
| Nov. 19, 2025 | DUOL | S 10b5-1 | 1,000 | $170.55 | $170,550 | 7,926 Direct | -11.20% | Disposed | -15.4% (price as of 2026-10-02) |
| Nov. 19, 2025 | DUOL | S 10b5-1 | 2,009 | $171.50 | $344,544 | 5,917 Direct | -25.35% | Disposed | -15.9% (price as of 2026-10-02) |
| Nov. 19, 2025 | DUOL | S 10b5-1 | 1,281 | $172.39 | $220,832 | 4,636 Direct | -21.65% | Disposed | -16.3% (price as of 2026-10-02) |
| Nov. 19, 2025 | DUOL | S 10b5-1 | 760 | $173.74 | $132,042 | 3,876 Direct | -16.39% | Disposed | -17.0% (price as of 2026-10-02) |
| Nov. 19, 2025 | DUOL | S 10b5-1 | 3,089 | $174.61 | $539,370 | 787 Direct | -79.70% | Disposed | -17.4% (price as of 2026-10-02) |
| Nov. 19, 2025 | DUOL | S 10b5-1 | 435 | $175.46 | $76,325 | 352 Direct | -55.27% | Disposed | -17.8% (price as of 2026-10-02) |
| Nov. 19, 2025 | DUOL | S 10b5-1 | 280 | $176.68 | $49,470 | 72 Direct | -79.55% | Disposed | -18.3% (price as of 2026-10-02) |
| Nov. 19, 2025 | DUOL | M | 10,000 | · | · | 5,252 Direct | -65.57% | Disposed | (price as of 2026-10-02) |
| Nov. 19, 2025 | DUOL | C | 10,000 | · | · | 124,305 Direct | +8.75% | Acquired | (price as of 2026-10-02) |
| Nov. 19, 2025 | DUOL | C | 10,000 | · | · | 114,305 Direct | -8.04% | Disposed | (price as of 2026-10-02) |
| Nov. 4, 2025 | DUOL | C | 10,000 | $38.08 | $380,800 | 10,072 Direct | +13888.89% | Acquired | 278.9% (price as of 2026-10-02) |
| Nov. 4, 2025 | DUOL | S 10b5-1 | 744 | $257.92 | $191,892 | 9,328 Direct | -7.39% | Disposed | -44.1% (price as of 2026-10-02) |
| Nov. 4, 2025 | DUOL | S 10b5-1 | 936 | $258.77 | $242,209 | 8,392 Direct | -10.03% | Disposed | -44.2% (price as of 2026-10-02) |
| Nov. 4, 2025 | DUOL | S 10b5-1 | 560 | $259.71 | $145,438 | 7,832 Direct | -6.67% | Disposed | -44.4% (price as of 2026-10-02) |
| Nov. 4, 2025 | DUOL | S 10b5-1 | 165 | $261.14 | $43,088 | 7,667 Direct | -2.11% | Disposed | -44.8% (price as of 2026-10-02) |
| Nov. 4, 2025 | DUOL | S 10b5-1 | 1,778 | $261.94 | $465,729 | 5,889 Direct | -23.19% | Disposed | -44.9% (price as of 2026-10-02) |
| Nov. 4, 2025 | DUOL | S 10b5-1 | 560 | $262.97 | $147,263 | 5,329 Direct | -9.51% | Disposed | -45.1% (price as of 2026-10-02) |
| Nov. 4, 2025 | DUOL | S 10b5-1 | 1,625 | $264.06 | $429,098 | 3,704 Direct | -30.49% | Disposed | -45.4% (price as of 2026-10-02) |
| Nov. 4, 2025 | DUOL | S 10b5-1 | 760 | $265.02 | $201,415 | 2,944 Direct | -20.52% | Disposed | -45.6% (price as of 2026-10-02) |
| Nov. 4, 2025 | DUOL | S 10b5-1 | 1,727 | $266.12 | $459,589 | 1,217 Direct | -58.66% | Disposed | -45.8% (price as of 2026-10-02) |
| Nov. 4, 2025 | DUOL | S 10b5-1 | 1,145 | $266.87 | $305,566 | 72 Direct | -94.08% | Disposed | -45.9% (price as of 2026-10-02) |
| Nov. 4, 2025 | DUOL | M | 10,000 | · | · | 15,252 Direct | -39.60% | Disposed | (price as of 2026-10-02) |
| Nov. 4, 2025 | DUOL | C | 10,000 | · | · | 124,305 Direct | +8.75% | Acquired | (price as of 2026-10-02) |
| Nov. 4, 2025 | DUOL | C | 10,000 | · | · | 114,305 Direct | -8.04% | Disposed | (price as of 2026-10-02) |
| Oct. 20, 2025 | DUOL | C | 10,000 | $38.08 | $380,800 | 10,072 Direct | +13888.89% | Acquired | 278.9% (price as of 2026-10-02) |
| Oct. 20, 2025 | DUOL | S 10b5-1 | 100 | $305.86 | $30,586 | 9,972 Direct | -0.99% | Disposed | -52.8% (price as of 2026-10-02) |
| Oct. 20, 2025 | DUOL | S 10b5-1 | 600 | $307.55 | $184,530 | 9,372 Direct | -6.02% | Disposed | -53.1% (price as of 2026-10-02) |
| Oct. 20, 2025 | DUOL | S 10b5-1 | 500 | $309.06 | $154,530 | 8,872 Direct | -5.34% | Disposed | -53.3% (price as of 2026-10-02) |
| Oct. 20, 2025 | DUOL | S 10b5-1 | 632 | $309.94 | $195,882 | 8,240 Direct | -7.12% | Disposed | -53.5% (price as of 2026-10-02) |
| Oct. 20, 2025 | DUOL | S 10b5-1 | 1,000 | $311.43 | $311,430 | 7,240 Direct | -12.14% | Disposed | -53.7% (price as of 2026-10-02) |
| Oct. 20, 2025 | DUOL | S 10b5-1 | 1,281 | $312.37 | $400,146 | 5,959 Direct | -17.69% | Disposed | -53.8% (price as of 2026-10-02) |
| Oct. 20, 2025 | DUOL | S 10b5-1 | 500 | $313.93 | $156,965 | 5,459 Direct | -8.39% | Disposed | -54.0% (price as of 2026-10-02) |
| Oct. 20, 2025 | DUOL | S 10b5-1 | 1,100 | $315.79 | $347,369 | 4,359 Direct | -20.15% | Disposed | -54.3% (price as of 2026-10-02) |
| Oct. 20, 2025 | DUOL | S 10b5-1 | 1,600 | $316.64 | $506,624 | 2,759 Direct | -36.71% | Disposed | -54.4% (price as of 2026-10-02) |
| Oct. 20, 2025 | DUOL | S 10b5-1 | 680 | $317.68 | $216,022 | 2,079 Direct | -24.65% | Disposed | -54.6% (price as of 2026-10-02) |
| Oct. 20, 2025 | DUOL | S 10b5-1 | 907 | $318.73 | $289,088 | 1,172 Direct | -43.63% | Disposed | -54.7% (price as of 2026-10-02) |
| Oct. 20, 2025 | DUOL | S 10b5-1 | 300 | $319.97 | $95,991 | 872 Direct | -25.60% | Disposed | -54.9% (price as of 2026-10-02) |
| Oct. 20, 2025 | DUOL | S 10b5-1 | 400 | $321.75 | $128,700 | 472 Direct | -45.87% | Disposed | -55.2% (price as of 2026-10-02) |
| Oct. 20, 2025 | DUOL | S 10b5-1 | 300 | $323.09 | $96,927 | 172 Direct | -63.56% | Disposed | -55.3% (price as of 2026-10-02) |
| Oct. 20, 2025 | DUOL | S 10b5-1 | 100 | $324.10 | $32,410 | 72 Direct | -58.14% | Disposed | -55.5% (price as of 2026-10-02) |
| Oct. 20, 2025 | DUOL | M | 10,000 | · | · | 25,252 Direct | -28.37% | Disposed | (price as of 2026-10-02) |
| Oct. 20, 2025 | DUOL | C | 10,000 | · | · | 96,075 Direct | +11.62% | Acquired | (price as of 2026-10-02) |
| Oct. 20, 2025 | DUOL | C | 10,000 | · | · | 86,075 Direct | -10.41% | Disposed | (price as of 2026-10-02) |
| Oct. 20, 2025 | DUOL | M | 60,000 | · | · | 390,000 Direct | -13.33% | Disposed | (price as of 2026-10-02) |
| Oct. 20, 2025 | DUOL | M | 60,000 | · | · | 146,075 Direct | +69.71% | Acquired | (price as of 2026-10-02) |
| Oct. 20, 2025 | DUOL | F | 31,770 | $312.73 | $9,935,432 | 114,305 Direct | -21.75% | Disposed | -53.9% (price as of 2026-10-02) |
| Oct. 6, 2025 | DUOL | C | 10,000 | $38.08 | $380,800 | 10,072 Direct | +13888.89% | Acquired | 278.9% (price as of 2026-10-02) |
| Oct. 6, 2025 | DUOL | S 10b5-1 | 500 | $317.31 | $158,655 | 9,572 Direct | -4.96% | Disposed | -54.5% (price as of 2026-10-02) |
| Oct. 6, 2025 | DUOL | S 10b5-1 | 1,916 | $318.26 | $609,786 | 7,656 Direct | -20.02% | Disposed | -54.7% (price as of 2026-10-02) |
| Oct. 6, 2025 | DUOL | S 10b5-1 | 1,599 | $319.56 | $510,976 | 6,057 Direct | -20.89% | Disposed | -54.9% (price as of 2026-10-02) |
| Oct. 6, 2025 | DUOL | S 10b5-1 | 1,803 | $320.33 | $577,555 | 4,254 Direct | -29.77% | Disposed | -55.0% (price as of 2026-10-02) |
| Oct. 6, 2025 | DUOL | S 10b5-1 | 1,173 | $321.39 | $376,990 | 3,081 Direct | -27.57% | Disposed | -55.1% (price as of 2026-10-02) |
| Oct. 6, 2025 | DUOL | S 10b5-1 | 109 | $322.62 | $35,166 | 2,972 Direct | -3.54% | Disposed | -55.3% (price as of 2026-10-02) |
| Oct. 6, 2025 | DUOL | S 10b5-1 | 300 | $324.10 | $97,230 | 2,672 Direct | -10.09% | Disposed | -55.5% (price as of 2026-10-02) |
| Oct. 6, 2025 | DUOL | S 10b5-1 | 500 | $325.22 | $162,610 | 2,172 Direct | -18.71% | Disposed | -55.6% (price as of 2026-10-02) |
| Oct. 6, 2025 | DUOL | S 10b5-1 | 600 | $326.50 | $195,900 | 1,572 Direct | -27.62% | Disposed | -55.8% (price as of 2026-10-02) |
| Oct. 6, 2025 | DUOL | S 10b5-1 | 1,300 | $327.44 | $425,672 | 272 Direct | -82.70% | Disposed | -55.9% (price as of 2026-10-02) |
| Oct. 6, 2025 | DUOL | S 10b5-1 | 200 | $328.76 | $65,752 | 72 Direct | -73.53% | Disposed | -56.1% (price as of 2026-10-02) |
| Oct. 6, 2025 | DUOL | M | 10,000 | · | · | 35,252 Direct | -22.10% | Disposed | (price as of 2026-10-02) |
| Oct. 6, 2025 | DUOL | C | 10,000 | · | · | 96,075 Direct | +11.62% | Acquired | (price as of 2026-10-02) |
| Oct. 6, 2025 | DUOL | C | 10,000 | · | · | 86,075 Direct | -10.41% | Disposed | (price as of 2026-10-02) |
| Sept. 19, 2025 | DUOL | C | 10,000 | $38.08 | $380,800 | 10,072 Direct | +13888.89% | Acquired | 278.9% (price as of 2026-10-02) |
| Sept. 19, 2025 | DUOL | S 10b5-1 | 1,300 | $286.77 | $372,801 | 8,772 Direct | -12.91% | Disposed | -49.7% (price as of 2026-10-02) |
| Sept. 19, 2025 | DUOL | S 10b5-1 | 2,300 | $287.81 | $661,963 | 6,472 Direct | -26.22% | Disposed | -49.9% (price as of 2026-10-02) |
| Sept. 19, 2025 | DUOL | S 10b5-1 | 2,300 | $288.81 | $664,263 | 4,172 Direct | -35.54% | Disposed | -50.0% (price as of 2026-10-02) |
| Sept. 19, 2025 | DUOL | S 10b5-1 | 1,900 | $289.79 | $550,601 | 2,272 Direct | -45.54% | Disposed | -50.2% (price as of 2026-10-02) |
| Sept. 19, 2025 | DUOL | S 10b5-1 | 2,200 | $290.78 | $639,716 | 72 Direct | -96.83% | Disposed | -50.4% (price as of 2026-10-02) |
| Sept. 19, 2025 | DUOL | M | 10,000 | · | · | 45,252 Direct | -18.10% | Disposed | (price as of 2026-10-02) |
| Sept. 19, 2025 | DUOL | C | 10,000 | · | · | 96,075 Direct | +11.62% | Acquired | (price as of 2026-10-02) |
| Sept. 19, 2025 | DUOL | C | 10,000 | · | · | 86,075 Direct | -10.41% | Disposed | (price as of 2026-10-02) |
| Sept. 5, 2025 | DUOL | C | 10,000 | $38.08 | $380,800 | 10,072 Direct | +13888.89% | Acquired | 278.9% (price as of 2026-10-02) |
| Sept. 5, 2025 | DUOL | S 10b5-1 | 500 | $264.75 | $132,375 | 9,572 Direct | -4.96% | Disposed | -45.5% (price as of 2026-10-02) |
| Sept. 5, 2025 | DUOL | S 10b5-1 | 1,148 | $265.95 | $305,311 | 8,424 Direct | -11.99% | Disposed | -45.8% (price as of 2026-10-02) |
| Sept. 5, 2025 | DUOL | S 10b5-1 | 849 | $266.90 | $226,598 | 7,575 Direct | -10.08% | Disposed | -45.9% (price as of 2026-10-02) |
| Sept. 5, 2025 | DUOL | S 10b5-1 | 2,100 | $267.93 | $562,653 | 5,475 Direct | -27.72% | Disposed | -46.2% (price as of 2026-10-02) |
| Sept. 5, 2025 | DUOL | S 10b5-1 | 1,956 | $268.92 | $526,008 | 3,519 Direct | -35.73% | Disposed | -46.4% (price as of 2026-10-02) |
| Sept. 5, 2025 | DUOL | S 10b5-1 | 1,600 | $269.87 | $431,792 | 1,919 Direct | -45.47% | Disposed | -46.5% (price as of 2026-10-02) |
| Sept. 5, 2025 | DUOL | S 10b5-1 | 1,647 | $271.05 | $446,419 | 272 Direct | -85.83% | Disposed | -46.8% (price as of 2026-10-02) |
| Sept. 5, 2025 | DUOL | S 10b5-1 | 200 | $271.57 | $54,314 | 72 Direct | -73.53% | Disposed | -46.9% (price as of 2026-10-02) |
| Sept. 5, 2025 | DUOL | M | 10,000 | · | · | 55,252 Direct | -15.33% | Disposed | (price as of 2026-10-02) |
| Sept. 5, 2025 | DUOL | C | 10,000 | · | · | 96,075 Direct | +11.62% | Acquired | (price as of 2026-10-02) |
| Sept. 5, 2025 | DUOL | C | 10,000 | · | · | 86,075 Direct | -10.41% | Disposed | (price as of 2026-10-02) |
| Aug. 20, 2025 | DUOL | C | 10,000 | · | · | 10,000 Indirect | · | Acquired | (price as of 2026-10-02) |
| Aug. 20, 2025 | DUOL | G | 10,000 | · | · | 0 Indirect | -100.00% | Disposed | (price as of 2026-10-02) |
Showing latest 100 of 710 transactions
P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding
Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.
Derivative holdings (Form 4 Table II) Options, RSUs and convertible securities reported on Form 4 Table II.
| Date | Ticker | Security | Underlying | Exercise price | Expiration | Shares | A/D |
|---|---|---|---|---|---|---|---|
| May 27, 2026 | DUOL | Performance-Based Restricted Stock Units | Class B Common Stock | · | June 21, 2031 | 60,000 | Disposed |
| May 27, 2026 | DUOL | Class B Common Stock | Class A Common Stock | · | · | 60,000 | Acquired |
| May 27, 2026 | DUOL | Class B Common Stock | Class A Common Stock | · | · | 31,920 | Disposed |
| Feb. 17, 2026 | DUOL | Performance-Based Restricted Stock Units | Class B Common Stock | · | June 21, 2031 | 60,000 | Disposed |
| Feb. 17, 2026 | DUOL | Class B Common Stock | Class A Common Stock | · | · | 60,000 | Acquired |
| Feb. 17, 2026 | DUOL | Class B Common Stock | Class A Common Stock | · | · | 30,594 | Disposed |
| Dec. 8, 2025 | DUOL | Class B Common Stock | Class A Common Stock | · | · | 50,000 | Disposed |
| Dec. 3, 2025 | DUOL | Stock Option (Right to Buy) | Class B Common Stock | $38.08 | Dec. 2, 2030 | 5,252 | Disposed |
| Dec. 3, 2025 | DUOL | Class B Common Stock | Class A Common Stock | · | · | 5,252 | Acquired |
| Dec. 1, 2025 | DUOL | Performance-Based Restricted Stock Units | Class B Common Stock | · | June 21, 2031 | 60,000 | Disposed |
| Dec. 1, 2025 | DUOL | Class B Common Stock | Class A Common Stock | · | · | 60,000 | Acquired |
| Dec. 1, 2025 | DUOL | Class B Common Stock | Class A Common Stock | · | · | 31,770 | Disposed |
| Nov. 19, 2025 | DUOL | Stock Option (Right to Buy) | Class B Common Stock | $38.08 | Dec. 2, 2030 | 10,000 | Disposed |
| Nov. 19, 2025 | DUOL | Class B Common Stock | Class A Common Stock | · | · | 10,000 | Acquired |
| Nov. 19, 2025 | DUOL | Class B Common Stock | Class A Common Stock | · | · | 10,000 | Disposed |
| Nov. 4, 2025 | DUOL | Stock Option (Right to Buy) | Class B Common Stock | $38.08 | Dec. 2, 2030 | 10,000 | Disposed |
| Nov. 4, 2025 | DUOL | Class B Common Stock | Class A Common Stock | · | · | 10,000 | Acquired |
| Nov. 4, 2025 | DUOL | Class B Common Stock | Class A Common Stock | · | · | 10,000 | Disposed |
| Oct. 20, 2025 | DUOL | Stock Option (Right to Buy) | Class B Common Stock | $38.08 | Dec. 2, 2030 | 10,000 | Disposed |
| Oct. 20, 2025 | DUOL | Class B Common Stock | Class A Common Stock | · | · | 10,000 | Acquired |
| Oct. 20, 2025 | DUOL | Class B Common Stock | Class A Common Stock | · | · | 10,000 | Disposed |
| Oct. 20, 2025 | DUOL | Performance-Based Restricted Stock Units | Class B Common Stock | · | June 21, 2031 | 60,000 | Disposed |
| Oct. 20, 2025 | DUOL | Class B Common Stock | Class A Common Stock | · | · | 60,000 | Acquired |
| Oct. 20, 2025 | DUOL | Class B Common Stock | Class A Common Stock | · | · | 31,770 | Disposed |
| Oct. 6, 2025 | DUOL | Stock Option (Right to Buy) | Class B Common Stock | $38.08 | Dec. 2, 2030 | 10,000 | Disposed |
| Oct. 6, 2025 | DUOL | Class B Common Stock | Class A Common Stock | · | · | 10,000 | Acquired |
| Oct. 6, 2025 | DUOL | Class B Common Stock | Class A Common Stock | · | · | 10,000 | Disposed |
| Sept. 19, 2025 | DUOL | Stock Option (Right to Buy) | Class B Common Stock | $38.08 | Dec. 2, 2030 | 10,000 | Disposed |
| Sept. 19, 2025 | DUOL | Class B Common Stock | Class A Common Stock | · | · | 10,000 | Acquired |
| Sept. 19, 2025 | DUOL | Class B Common Stock | Class A Common Stock | · | · | 10,000 | Disposed |
| Sept. 5, 2025 | DUOL | Stock Option (Right to Buy) | Class B Common Stock | $38.08 | Dec. 2, 2030 | 10,000 | Disposed |
| Sept. 5, 2025 | DUOL | Class B Common Stock | Class A Common Stock | · | · | 10,000 | Acquired |
| Sept. 5, 2025 | DUOL | Class B Common Stock | Class A Common Stock | · | · | 10,000 | Disposed |
| Aug. 20, 2025 | DUOL | Class B Common Stock | Class A Common Stock | · | · | 10,000 | Disposed |
| Aug. 19, 2025 | DUOL | Stock Option (Right to Buy) | Class B Common Stock | $38.08 | Dec. 2, 2030 | 10,000 | Disposed |
| Aug. 19, 2025 | DUOL | Class B Common Stock | Class A Common Stock | · | · | 10,000 | Acquired |
| Aug. 19, 2025 | DUOL | Class B Common Stock | Class A Common Stock | · | · | 10,000 | Disposed |
| Aug. 5, 2025 | DUOL | Stock Option (Right to Buy) | Class B Common Stock | $38.08 | Dec. 2, 2030 | 10,000 | Disposed |
| Aug. 5, 2025 | DUOL | Class B Common Stock | Class A Common Stock | · | · | 10,000 | Acquired |
| Aug. 5, 2025 | DUOL | Class B Common Stock | Class A Common Stock | · | · | 10,000 | Disposed |
| July 21, 2025 | DUOL | Stock Option (Right to Buy) | Class B Common Stock | $38.08 | Dec. 2, 2030 | 10,000 | Disposed |
| July 21, 2025 | DUOL | Class B Common Stock | Class A Common Stock | · | · | 10,000 | Acquired |
| July 21, 2025 | DUOL | Class B Common Stock | Class A Common Stock | · | · | 10,000 | Disposed |
| July 7, 2025 | DUOL | Stock Option (Right to Buy) | Class B Common Stock | $38.08 | Dec. 2, 2030 | 10,000 | Disposed |
| July 7, 2025 | DUOL | Class B Common Stock | Class A Common Stock | · | · | 10,000 | Acquired |
| July 7, 2025 | DUOL | Class B Common Stock | Class A Common Stock | · | · | 10,000 | Disposed |
| June 20, 2025 | DUOL | Stock Option (Right to Buy) | Class B Common Stock | $38.08 | Dec. 2, 2030 | 10,000 | Disposed |
| June 20, 2025 | DUOL | Class B Common Stock | Class A Common Stock | · | · | 10,000 | Acquired |
| June 20, 2025 | DUOL | Class B Common Stock | Class A Common Stock | · | · | 10,000 | Disposed |
| June 6, 2025 | DUOL | Class B Common Stock | Class A Common Stock | · | · | 60,000 | Disposed |
| June 5, 2025 | DUOL | Stock Option (Right to Buy) | Class B Common Stock | $38.08 | Dec. 2, 2030 | 10,000 | Disposed |
| June 5, 2025 | DUOL | Class B Common Stock | Class A Common Stock | · | · | 10,000 | Acquired |
| June 5, 2025 | DUOL | Class B Common Stock | Class A Common Stock | · | · | 10,000 | Disposed |
| May 19, 2025 | DUOL | Stock Option (Right to Buy) | Class B Common Stock | $38.08 | Dec. 2, 2030 | 10,000 | Disposed |
| May 19, 2025 | DUOL | Class B Common Stock | Class A Common Stock | · | · | 10,000 | Acquired |
| May 19, 2025 | DUOL | Class B Common Stock | Class A Common Stock | · | · | 10,000 | Disposed |
| May 5, 2025 | DUOL | Stock Option (Right to Buy) | Class B Common Stock | $38.08 | Dec. 2, 2030 | 10,000 | Disposed |
| May 5, 2025 | DUOL | Class B Common Stock | Class A Common Stock | · | · | 10,000 | Acquired |
| May 5, 2025 | DUOL | Class B Common Stock | Class A Common Stock | · | · | 10,000 | Disposed |
| April 21, 2025 | DUOL | Stock Option (Right to Buy) | Class B Common Stock | $38.08 | Dec. 2, 2030 | 10,000 | Disposed |
| April 21, 2025 | DUOL | Class B Common Stock | Class A Common Stock | · | · | 10,000 | Acquired |
| April 21, 2025 | DUOL | Class B Common Stock | Class A Common Stock | · | · | 10,000 | Disposed |
| April 7, 2025 | DUOL | Stock Option (Right to Buy) | Class B Common Stock | $38.08 | Dec. 2, 2030 | 10,000 | Disposed |
| April 7, 2025 | DUOL | Class B Common Stock | Class A Common Stock | · | · | 10,000 | Acquired |
| April 7, 2025 | DUOL | Class B Common Stock | Class A Common Stock | · | · | 10,000 | Disposed |
| March 19, 2025 | DUOL | Stock Option (Right to Buy) | Class B Common Stock | $14.42 | Dec. 12, 2029 | 252 | Disposed |
| March 19, 2025 | DUOL | Class B Common Stock | Class A Common Stock | · | · | 252 | Acquired |
| March 19, 2025 | DUOL | Class B Common Stock | Class A Common Stock | · | · | 252 | Disposed |
| March 19, 2025 | DUOL | Stock Option (Right to Buy) | Class B Common Stock | $38.08 | Dec. 2, 2030 | 9,748 | Disposed |
| March 19, 2025 | DUOL | Class B Common Stock | Class A Common Stock | · | · | 9,748 | Acquired |
| March 19, 2025 | DUOL | Class B Common Stock | Class A Common Stock | · | · | 9,748 | Disposed |
| March 5, 2025 | DUOL | Stock Option (Right to Buy) | Class B Common Stock | $14.42 | Dec. 12, 2029 | 10,000 | Disposed |
| March 5, 2025 | DUOL | Class B Common Stock | Class A Common Stock | · | · | 10,000 | Acquired |
| March 5, 2025 | DUOL | Class B Common Stock | Class A Common Stock | · | · | 10,000 | Disposed |
| Feb. 19, 2025 | DUOL | Stock Option (Right to Buy) | Class B Common Stock | $14.42 | Dec. 12, 2029 | 10,000 | Disposed |
| Feb. 19, 2025 | DUOL | Class B Common Stock | Class A Common Stock | · | · | 10,000 | Acquired |
| Feb. 19, 2025 | DUOL | Class B Common Stock | Class A Common Stock | · | · | 10,000 | Disposed |
| Feb. 5, 2025 | DUOL | Stock Option (Right to Buy) | Class B Common Stock | $14.42 | Dec. 12, 2029 | 10,000 | Disposed |
| Feb. 5, 2025 | DUOL | Class B Common Stock | Class A Common Stock | · | · | 10,000 | Acquired |
| Feb. 5, 2025 | DUOL | Class B Common Stock | Class A Common Stock | · | · | 10,000 | Disposed |
| Jan. 21, 2025 | DUOL | Stock Option (Right to Buy) | Class B Common Stock | $14.42 | Dec. 12, 2029 | 10,000 | Disposed |
| Jan. 21, 2025 | DUOL | Class B Common Stock | Class A Common Stock | · | · | 10,000 | Acquired |
| Jan. 21, 2025 | DUOL | Class B Common Stock | Class A Common Stock | · | · | 10,000 | Disposed |
| Jan. 6, 2025 | DUOL | Stock Option (Right to Buy) | Class B Common Stock | $14.42 | Dec. 12, 2029 | 10,000 | Disposed |
| Jan. 6, 2025 | DUOL | Class B Common Stock | Class A Common Stock | · | · | 10,000 | Acquired |
| Jan. 6, 2025 | DUOL | Class B Common Stock | Class A Common Stock | · | · | 10,000 | Disposed |
| Dec. 26, 2024 | DUOL | Performance-Based Restricted Stock Units | Class B Common Stock | · | June 21, 2031 | 60,000 | Disposed |
| Dec. 26, 2024 | DUOL | Class B Common Stock | Class A Common Stock | · | · | 60,000 | Acquired |
| Dec. 26, 2024 | DUOL | Class B Common Stock | Class A Common Stock | · | · | 31,770 | Disposed |
| Dec. 19, 2024 | DUOL | Stock Option (Right to Buy) | Class B Common Stock | $14.42 | Dec. 12, 2029 | 10,000 | Disposed |
| Dec. 19, 2024 | DUOL | Class B Common Stock | Class A Common Stock | · | · | 10,000 | Acquired |
| Dec. 19, 2024 | DUOL | Class B Common Stock | Class A Common Stock | · | · | 10,000 | Disposed |
| Dec. 13, 2024 | DUOL | Stock Option (Right to Buy) | Class B Common Stock | $14.42 | Dec. 12, 2029 | 43,826 | Disposed |
| Dec. 13, 2024 | DUOL | Class B Common Stock | Class A Common Stock | · | · | 43,826 | Acquired |
| Dec. 13, 2024 | DUOL | Class B Common Stock | Class A Common Stock | · | · | 43,826 | Disposed |
| Dec. 11, 2024 | DUOL | Stock Option (Right to Buy) | Class B Common Stock | $7.48 | Feb. 14, 2029 | 161,000 | Disposed |
| Dec. 11, 2024 | DUOL | Class B Common Stock | Class A Common Stock | · | · | 161,000 | Acquired |
| Dec. 11, 2024 | DUOL | Class B Common Stock | Class A Common Stock | · | · | 161,000 | Disposed |
| Dec. 11, 2024 | DUOL | Stock Option (Right to Buy) | Class B Common Stock | $14.42 | Dec. 12, 2029 | 27,901 | Disposed |
| Dec. 11, 2024 | DUOL | Class B Common Stock | Class A Common Stock | · | · | 27,901 | Acquired |
Showing latest 100 of 148 transactions
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 6 holdings
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| July 27, 2021 | DUOL | Class B Common Stock | 15,500 | Direct |
| July 27, 2021 | DUOL | Class B Common Stock | 3,457,417 | Indirect |
| July 27, 2021 | DUOL | Stock Option (Right to Buy) | 161,000 | Direct |
| July 27, 2021 | DUOL | Stock Option (Right to Buy) | 173,500 | Direct |
| July 27, 2021 | DUOL | Stock Option (Right to Buy) | 175,000 | Direct |
| July 27, 2021 | DUOL | Performance-Based Restricted Stock Units | 600,000 | Direct |