InsiderTrades

Hacker Severin

SEC CIK 1870272 · EDGAR

Buying vs selling by month open-market trades, last 60 months, DUOL
BoughtSold

Companies

TickerCompanyTitleHoldingBoughtSoldTradesFirstLast
DUOLDuolingo, Inc.Chief Tech Off, Co-Founder, Dir, 10% 72 — $225.09M 1302021-07-302025-12-08

Most active insiders at DUOL, 12 months

#InsiderTitleBoughtSold
1 Hacker SeverinChief Tech Off, Co-Founder, Dir, 10% —$10.72M
2 von Ahn LuisPres, CEO, Co-Founder, Dir, 10% —$10.42M
3 Glance NatalieChief Engineering Off —$3.67M
4 Chen Stephen C.GC —$2.46M
5 Skaruppa MatthewCFO —$1.69M
6 GORDON WILLIAM BDir —$1.46M
7 Meese RobertChief Business Off —$701.1K
8 Shelton James HDir $498.8K—
9 Ross BonnieDir ——
10 Lilly III John OsborneDir ——

Transactions 130

Type
Reset
X Filed Traded Ticker Company Insider Title Type Price Qty Owned ΔOwn Value
D 2025-12-09 2025-12-08 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% G - Gift $0.00 -50.0K 72 -100% $0
D 2025-12-09 2025-12-08 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% C - Cnv Deriv $0.00 +50.0K 50.1K +69,444% $0
D 2025-11-20 2025-11-19 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% C - Cnv Deriv $38.08 +10.0K 10.1K +13,889% +$380.8K
DM 2025-11-20 2025-11-19 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% S - Sale $172.75 -10.0K 72 -99% -$1.73M
D 2025-11-06 2025-11-04 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% C - Cnv Deriv $38.08 +10.0K 10.1K +13,889% +$380.8K
DM 2025-11-06 2025-11-04 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% S - Sale $263.13 -10.0K 5,889 -63% -$2.63M
DM 2025-10-22 2025-10-20 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% S - Sale $314.72 -10.0K 2,079 -83% -$3.15M
D 2025-10-22 2025-10-20 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% C - Cnv Deriv $38.08 +10.0K 10.1K +13,889% +$380.8K
DM 2025-10-07 2025-10-06 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% S - Sale $321.63 -10.0K 9,572 -51% -$3.22M
D 2025-10-07 2025-10-06 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% C - Cnv Deriv $38.08 +10.0K 10.1K +13,889% +$380.8K
D 2025-09-22 2025-09-19 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% C - Cnv Deriv $38.08 +10.0K 10.1K +13,889% +$380.8K
DM 2025-09-22 2025-09-19 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% S - Sale $288.93 -10.0K 6,472 -61% -$2.89M
DM 2025-09-09 2025-09-05 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% S - Sale $268.55 -10.0K 5,475 -65% -$2.69M
D 2025-09-09 2025-09-05 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% C - Cnv Deriv $38.08 +10.0K 10.1K +13,889% +$380.8K
DI 2025-08-22 2025-08-20 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% C - Cnv Deriv $0.00 +10.0K 10.0K New $0
DI 2025-08-22 2025-08-20 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% G - Gift $0.00 -10.0K 0 -100% $0
DM 2025-08-21 2025-08-19 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% S - Sale $344.56 -10.0K 9,069 -52% -$3.45M
D 2025-08-21 2025-08-19 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% C - Cnv Deriv $38.08 +10.0K 10.1K +13,889% +$380.8K
DM 2025-08-07 2025-08-05 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% S - Sale $344.41 -10.0K 2,303 -81% -$3.44M
D 2025-08-07 2025-08-05 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% C - Cnv Deriv $38.08 +10.0K 10.1K +13,889% +$380.8K
DM 2025-07-22 2025-07-21 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% S - Sale $360.33 -10.0K 672 -94% -$3.60M
D 2025-07-22 2025-07-21 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% C - Cnv Deriv $38.08 +10.0K 10.1K +13,889% +$380.8K
D 2025-07-09 2025-07-07 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% C - Cnv Deriv $38.08 +10.0K 10.1K +13,889% +$380.8K
DM 2025-07-09 2025-07-07 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% S - Sale $392.89 -10.0K 9,872 -50% -$3.93M
D 2025-06-23 2025-06-20 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% C - Cnv Deriv $38.08 +10.0K 10.1K +13,889% +$380.8K
DM 2025-06-23 2025-06-20 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% S - Sale $471.20 -10.0K 3,072 -76% -$4.71M
DI 2025-06-10 2025-06-06 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% G - Gift $0.00 -60.0K 0 -100% $0
DI 2025-06-10 2025-06-06 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% C - Cnv Deriv $0.00 +60.0K 60.0K New $0
DM 2025-06-09 2025-06-05 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% S - Sale $525.10 -10.0K 72 -99% -$5.25M
D 2025-06-09 2025-06-05 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% C - Cnv Deriv $38.08 +10.0K 10.1K +13,889% +$380.8K
DM 2025-05-20 2025-05-19 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% S - Sale $524.71 -10.0K 6,772 -60% -$5.25M
D 2025-05-20 2025-05-19 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% C - Cnv Deriv $38.08 +10.0K 10.1K +13,889% +$380.8K
DM 2025-05-07 2025-05-05 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% S - Sale $495.95 -10.0K 72 -99% -$4.96M
D 2025-05-07 2025-05-05 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% C - Cnv Deriv $38.08 +10.0K 10.1K +13,889% +$380.8K
DM 2025-04-23 2025-04-21 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% S - Sale $314.36 -10.0K 8,872 -53% -$3.14M
D 2025-04-23 2025-04-21 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% C - Cnv Deriv $38.08 +10.0K 10.1K +13,889% +$380.8K
D 2025-04-09 2025-04-07 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% C - Cnv Deriv $38.08 +10.0K 10.1K +13,889% +$380.8K
DM 2025-04-09 2025-04-07 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% S - Sale $292.43 -10.0K 9,972 -50% -$2.92M
DM 2025-03-21 2025-03-19 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% S - Sale $298.25 -10.0K 1,976 -84% -$2.98M
DM 2025-03-21 2025-03-19 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% C - Cnv Deriv $37.48 +10.0K 10.1K +13,889% +$374.8K
D 2025-03-06 2025-03-05 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% C - Cnv Deriv $14.42 +10.0K 10.1K +13,889% +$144.2K
DM 2025-03-06 2025-03-05 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% S - Sale $290.54 -10.0K 72 -99% -$2.91M
DM 2025-02-21 2025-02-19 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% S - Sale $433.93 -10.0K 5,179 -66% -$4.34M
D 2025-02-21 2025-02-19 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% C - Cnv Deriv $14.42 +10.0K 10.1K +13,889% +$144.2K
DM 2025-02-06 2025-02-05 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% S - Sale $391.45 -10.0K 770 -93% -$3.91M
D 2025-02-06 2025-02-05 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% C - Cnv Deriv $0.00 +10.0K 10.1K +13,889% $0
D 2025-01-23 2025-01-21 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% C - Cnv Deriv $14.42 +10.0K 10.1K +13,889% +$144.2K
DM 2025-01-23 2025-01-21 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% S - Sale $333.95 -10.0K 372 -96% -$3.34M
DM 2025-01-07 2025-01-06 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% S - Sale $336.23 -10.0K 6,050 -62% -$3.36M
D 2025-01-07 2025-01-06 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% C - Cnv Deriv $0.00 +10.0K 10.1K +13,889% $0
DM 2024-12-20 2024-12-19 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% S - Sale $336.82 -10.0K 2,562 -80% -$3.37M
D 2024-12-20 2024-12-19 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% C - Cnv Deriv $0.00 +10.0K 10.1K +13,889% $0
DM 2024-12-16 2024-12-13 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% S - Sale $338.75 -43.8K 1,172 -97% -$14.85M
D 2024-12-16 2024-12-13 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% C - Cnv Deriv $0.00 +43.8K 43.9K +60,869% $0
DM 2024-12-13 2024-12-12 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% S - Sale $340.29 -41.5K 1,903 -96% -$14.13M
D 2024-12-13 2024-12-12 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% C - Cnv Deriv $0.00 +41.5K 41.6K +57,668% $0
DM 2024-12-13 2024-12-11 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% S - Sale $339.54 -188.9K 133.0K -59% -$64.14M
D 2024-12-13 2024-12-11 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% C - Cnv Deriv $0.00 +188.9K 189.0K +262,362% $0
DI 2024-12-02 2024-11-27 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% G - Gift $0.00 -3,000 0 -100% $0
DI 2024-12-02 2024-11-12 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% C - Cnv Deriv $0.00 +3,000 3,000 New $0
DI 2024-08-26 2024-08-26 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% G - Gift $0.00 -15.0K 0 -100% $0
DI 2024-08-26 2024-08-22 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% C - Cnv Deriv $0.00 +15.0K 15.0K New $0
DMI 2024-08-02 2024-08-01 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% S - Sale $166.49 -10.0K 100 -99% -$1.66M
DI 2024-08-02 2024-08-01 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% C - Cnv Deriv $0.00 +10.0K 10.0K New $0
DMI 2024-07-02 2024-07-01 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% S - Sale $198.61 -10.0K 204 -98% -$1.99M
DI 2024-07-02 2024-07-01 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% C - Cnv Deriv $0.00 +10.0K 10.0K New $0
DI 2024-06-05 2024-06-03 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% C - Cnv Deriv $0.00 +10.0K 10.0K New $0
DMI 2024-06-05 2024-06-03 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% S - Sale $196.39 -10.0K 0 -100% -$1.96M
DI 2024-05-03 2024-05-01 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% C - Cnv Deriv $0.00 +10.0K 10.0K New $0
DMI 2024-05-03 2024-05-01 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% S - Sale $223.47 -10.0K 2,900 -78% -$2.23M
DMI 2024-04-02 2024-04-01 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% S - Sale $218.42 -10.0K 2,527 -80% -$2.18M
DI 2024-04-02 2024-04-01 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% C - Cnv Deriv $0.00 +10.0K 10.0K New $0
DI 2024-03-15 2024-03-13 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% C - Cnv Deriv $0.00 +10.0K 10.0K New $0
DI 2024-03-15 2024-03-13 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% G - Gift $0.00 -10.0K 0 -100% $0
DI 2024-03-04 2024-03-01 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% C - Cnv Deriv $0.00 +10.0K 10.0K New $0
DMI 2024-03-04 2024-03-01 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% S - Sale $235.13 -10.0K 0 -100% -$2.35M
DMI 2024-02-05 2024-02-01 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% S - Sale $178.62 -10.0K 5,370 -65% -$1.79M
DI 2024-02-05 2024-02-01 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% C - Cnv Deriv $0.00 +10.0K 10.0K New $0
DMI 2024-01-03 2024-01-02 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% S - Sale $214.24 -10.0K 0 -100% -$2.14M
DI 2024-01-03 2024-01-02 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% C - Cnv Deriv $0.00 +10.0K 10.0K New $0
DMI 2023-12-04 2023-12-01 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% S - Sale $212.86 -10.0K 7,098 -58% -$2.13M
DI 2023-12-04 2023-12-01 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% C - Cnv Deriv $0.00 +10.0K 10.0K New $0
DMI 2023-11-02 2023-11-01 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% S - Sale $146.57 -10.0K 9,400 -52% -$1.47M
DI 2023-11-02 2023-11-01 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% C - Cnv Deriv $0.00 +10.0K 10.0K New $0
DMI 2023-10-05 2023-10-02 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% S - Sale $165.26 -10.0K 8,683 -54% -$1.65M
DI 2023-10-05 2023-10-02 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% C - Cnv Deriv $0.00 +10.0K 10.0K New $0
DI 2023-09-19 2023-09-15 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% G - Gift $0.00 -3,000 0 -100% $0
DI 2023-09-19 2023-08-30 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% C - Cnv Deriv $0.00 +3,000 3,000 New $0
DMI 2023-09-06 2023-09-01 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% S - Sale $148.80 -10.0K 8,600 -54% -$1.49M
DI 2023-09-06 2023-09-01 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% C - Cnv Deriv $0.00 +10.0K 10.0K New $0
DMI 2023-05-02 2023-05-01 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% S - Sale $138.35 -10.0K 0 -100% -$1.38M
DI 2023-05-02 2023-05-01 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% C - Cnv Deriv $0.00 +10.0K 10.0K New $0
DMI 2023-04-04 2023-04-03 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% S - Sale $142.26 -10.0K 0 -100% -$1.42M
DI 2023-04-04 2023-04-03 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% C - Cnv Deriv $0.00 +10.0K 10.0K New $0
DI 2023-03-02 2023-03-01 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% C - Cnv Deriv $0.00 +10.0K 10.0K New $0
DMI 2023-03-02 2023-03-01 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% S - Sale $108.22 -10.0K 6,799 -60% -$1.08M
DMI 2023-02-02 2023-02-01 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% S - Sale $95.59 -10.0K 3,378 -75% -$955.9K
DI 2023-02-02 2023-02-01 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% C - Cnv Deriv $0.00 +10.0K 10.0K New $0
DI 2023-01-27 2022-12-12 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% C - Cnv Deriv $0.00 +3,500 3,500 New $0
DI 2023-01-27 2022-12-12 DUOL Duolingo, Inc. Hacker Severin Chief Tech Off, Co-Founder, Dir, 10% G - Gift $0.00 -3,500 0 -100% $0

Purchase Sale Sale after option exercise All abbreviations