Severin Hacker

Insider Reports History

Location
Pittsburgh, PA
Signature
/s/ Stephen Chen, as Attorney-in-Fact for Severin Hacker
All insider transactions
Transactions in reports broken out by “transaction date” reported in original SEC filing, see here for transactions aggregated across transaction date

Holdings reported by Severin Hacker:

Company Role Class Num Shares Value Price $ Report Date Ownership
Duolingo, Inc. Chief Tech Officer, Co-Founder, Director, 10%+ Owner Class B Common Stock 2,836,917 $529,311,973 $186.58 08 Dec 2025 Indirect
Duolingo, Inc. Chief Tech Officer, Co-Founder, Director, 10%+ Owner Performance-Based Restricted Stock Units 330,000 $153,846,000 $341.88 01 Dec 2025 Direct
Duolingo, Inc. Chief Tech Officer, Co-Founder, Director, 10%+ Owner Class B Common Stock 147,787 $27,574,098 $186.58 08 Dec 2025 Direct
Duolingo, Inc. Chief Tech Officer, Co-Founder, Director, 10%+ Owner Class A Common Stock 72 $13,433 $186.58 08 Dec 2025 Direct
Duolingo, Inc. Chief Tech Officer, Co-Founder, Director, 10%+ Owner Stock Option (Right to Buy) 0 03 Dec 2025 Direct

Insider Reports Filed by Severin Hacker

Symbol Company Period Transactions Value $ Form Type Role Filing Time
DUOL Duolingo, Inc. 08 Dec 2025 3 $0 4 Chief Tech Officer, Co-Founder, Director, 10%+ Owner 09 Dec 2025, 18:41
DUOL Duolingo, Inc. 01 Dec 2025 5 -$5,691,750 4 Chief Tech Officer, Co-Founder, Director, 10%+ Owner 03 Dec 2025, 19:34
DUOL Duolingo, Inc. 19 Nov 2025 12 -$1,346,641 4 Chief Tech Officer, Co-Founder, Director, 10%+ Owner 20 Nov 2025, 17:38
DUOL Duolingo, Inc. 04 Nov 2025 14 -$2,250,499 4 Chief Tech Officer, Co-Founder, Director, 10%+ Owner 06 Nov 2025, 16:19
DUOL Duolingo, Inc. 20 Oct 2025 22 -$12,701,830 4 Chief Tech Officer, Co-Founder, Director, 10%+ Owner 22 Oct 2025, 20:16
DUOL Duolingo, Inc. 06 Oct 2025 15 -$2,835,503 4 Chief Tech Officer, Co-Founder, Director, 10%+ Owner 07 Oct 2025, 16:13
DUOL Duolingo, Inc. 19 Sep 2025 9 -$2,508,573 4 Chief Tech Officer, Co-Founder, Director, 10%+ Owner 22 Sep 2025, 16:17
DUOL Duolingo, Inc. 05 Sep 2025 12 -$2,304,662 4 Chief Tech Officer, Co-Founder, Director, 10%+ Owner 09 Sep 2025, 08:09
DUOL Duolingo, Inc. 20 Aug 2025 3 $0 4 Chief Tech Officer, Co-Founder, Director, 10%+ Owner 22 Aug 2025, 17:09
DUOL Duolingo, Inc. 19 Aug 2025 21 -$3,064,787 4 Chief Tech Officer, Co-Founder, Director, 10%+ Owner 21 Aug 2025, 20:43
DUOL Duolingo, Inc. 05 Aug 2025 16 -$3,063,276 4 Chief Tech Officer, Co-Founder, Director, 10%+ Owner 07 Aug 2025, 21:10
DUOL Duolingo, Inc. 21 Jul 2025 17 -$3,222,536 4 Chief Tech Officer, Co-Founder, Director, 10%+ Owner 22 Jul 2025, 20:46
DUOL Duolingo, Inc. 07 Jul 2025 13 -$3,548,085 4 Chief Tech Officer, Co-Founder, Director, 10%+ Owner 09 Jul 2025, 17:11
DUOL Duolingo, Inc. 20 Jun 2025 16 -$4,331,193 4 Chief Tech Officer, Co-Founder, Director, 10%+ Owner 23 Jun 2025, 20:29
DUOL Duolingo, Inc. 06 Jun 2025 3 $0 4 Chief Tech Officer, Co-Founder, Director, 10%+ Owner 10 Jun 2025, 17:37
DUOL Duolingo, Inc. 05 Jun 2025 16 -$4,870,239 4 Chief Tech Officer, Co-Founder, Director, 10%+ Owner 09 Jun 2025, 17:17
DUOL Duolingo, Inc. 19 May 2025 15 -$4,866,239 4 Chief Tech Officer, Co-Founder, Director, 10%+ Owner 20 May 2025, 16:11
DUOL Duolingo, Inc. 05 May 2025 17 -$4,578,727 4 Chief Tech Officer, Co-Founder, Director, 10%+ Owner 07 May 2025, 16:06
DUOL Duolingo, Inc. 21 Apr 2025 17 -$2,762,801 4 Chief Tech Officer, Co-Founder, Director, 10%+ Owner 23 Apr 2025, 16:12
DUOL Duolingo, Inc. 07 Apr 2025 25 -$2,543,502 4 Chief Tech Officer, Co-Founder, Director, 10%+ Owner 09 Apr 2025, 16:07
DUOL Duolingo, Inc. 19 Mar 2025 22 -$2,607,677 4 Chief Tech Officer, Co-Founder, Director, 10%+ Owner 21 Mar 2025, 18:59
DUOL Duolingo, Inc. 05 Mar 2025 13 -$2,761,157 4 Chief Tech Officer, Co-Founder, Director, 10%+ Owner 06 Mar 2025, 20:54
DUOL Duolingo, Inc. 19 Feb 2025 13 -$4,195,154 4 Chief Tech Officer, Co-Founder, Director, 10%+ Owner 21 Feb 2025, 16:32
DUOL Duolingo, Inc. 05 Feb 2025 15 -$3,914,552 4 Chief Tech Officer, Co-Founder, Director, 10%+ Owner 06 Feb 2025, 19:27
DUOL Duolingo, Inc. 21 Jan 2025 18 -$3,195,335 4 Chief Tech Officer, Co-Founder, Director, 10%+ Owner 23 Jan 2025, 16:40
DUOL Duolingo, Inc. 06 Jan 2025 16 -$3,362,318 4 Chief Tech Officer, Co-Founder, Director, 10%+ Owner 07 Jan 2025, 16:06
DUOL Duolingo, Inc. 26 Dec 2024 3 -$10,861,528 4 Chief Tech Officer, Co-Founder, Director, 10%+ Owner 03 Jan 2025, 17:40
DUOL Duolingo, Inc. 19 Dec 2024 13 -$3,368,203 4 Chief Tech Officer, Co-Founder, Director, 10%+ Owner 20 Dec 2024, 16:16
DUOL Duolingo, Inc. 13 Dec 2024 14 -$14,845,949 4 Chief Tech Officer, Co-Founder, Director, 10%+ Owner 16 Dec 2024, 16:20
DUOL Duolingo, Inc. 12 Dec 2024 13 -$14,129,045 4 Chief Tech Officer, Co-Founder, Director, 10%+ Owner 13 Dec 2024, 17:09
DUOL Duolingo, Inc. 11 Dec 2024 32 -$64,139,078 4 Chief Tech Officer, Co-Founder, Director, 10%+ Owner 13 Dec 2024, 16:04
DUOL Duolingo, Inc. 22 Nov 2024 1 -$5,591,043 4/A Chief Tech Officer, Co-Founder, Director, 10%+ Owner 27 Nov 2024, 21:57
DUOL Duolingo, Inc. 12 Nov 2024 3 $0 4 Chief Tech Officer, Co-Founder, Director, 10%+ Owner 02 Dec 2024, 20:31
DUOL Duolingo, Inc. 22 Aug 2024 3 $0 4 Chief Tech Officer, Co-Founder, Director, 10%+ Owner 26 Aug 2024, 16:25
DUOL Duolingo, Inc. 01 Aug 2024 11 -$1,664,920 4 Chief Tech Officer, Co-Founder, Director, 10%+ Owner 02 Aug 2024, 16:34
DUOL Duolingo, Inc. 01 Jul 2024 11 -$1,986,075 4 Chief Tech Officer, Co-Founder, Director, 10%+ Owner 02 Jul 2024, 16:58
DUOL Duolingo, Inc. 03 Jun 2024 11 -$1,963,871 4 Chief Tech Officer, Co-Founder, Director, 10%+ Owner 05 Jun 2024, 16:32
DUOL Duolingo, Inc. 01 May 2024 14 -$2,234,653 4 Chief Tech Officer, Co-Founder, Director, 10%+ Owner 03 May 2024, 19:39
DUOL Duolingo, Inc. 01 Apr 2024 7 -$2,184,156 4 Chief Tech Officer, Co-Founder, Director, 10%+ Owner 02 Apr 2024, 16:30
DUOL Duolingo, Inc. 13 Mar 2024 3 $0 4 Chief Tech Officer, Co-Founder, Director, 10%+ Owner 15 Mar 2024, 19:46
DUOL Duolingo, Inc. 01 Mar 2024 8 -$2,351,325 4 Chief Tech Officer, Co-Founder, Director, 10%+ Owner 04 Mar 2024, 16:40
DUOL Duolingo, Inc. 01 Feb 2024 9 -$1,786,247 4 Chief Tech Officer, Co-Founder, Director, 10%+ Owner 05 Feb 2024, 16:17
DUOL Duolingo, Inc. 02 Jan 2024 11 -$2,142,456 4 Chief Tech Officer, Co-Founder, Director, 10%+ Owner 03 Jan 2024, 16:52
DUOL Duolingo, Inc. 01 Dec 2023 9 -$2,128,662 4 Chief Tech Officer, Co-Founder, Director, 10%+ Owner 04 Dec 2023, 16:10
DUOL Duolingo, Inc. 01 Nov 2023 7 -$1,465,700 4 Chief Tech Officer, Co-Founder, Director, 10%+ Owner 02 Nov 2023, 16:29
DUOL Duolingo, Inc. 02 Oct 2023 7 -$1,652,569 4 Chief Tech Officer, Co-Founder, Director, 10%+ Owner 05 Oct 2023, 16:14
DUOL Duolingo, Inc. 30 Aug 2023 3 $0 4 Chief Tech Officer, Co-Founder, Director, 10%+ Owner 19 Sep 2023, 16:18
DUOL Duolingo, Inc. 14 Aug 2023 2 -$4,366,786 4 Chief Tech Officer, Co-Founder, Director, 10%+ Owner 16 Aug 2023, 21:11
DUOL Duolingo, Inc. 31 May 2023 10 -$1,487,982 4 Chief Tech Officer, Co-Founder, Director, 10%+ Owner 06 Sep 2023, 20:43
DUOL Duolingo, Inc. 01 May 2023 6 -$1,383,485 4 Chief Tech Officer, Co-Founder, Director, 10%+ Owner 02 May 2023, 19:34
DUOL Duolingo, Inc. 03 Apr 2023 6 -$1,422,555 4 Chief Tech Officer, Co-Founder, Director, 10%+ Owner 04 Apr 2023, 16:20
DUOL Duolingo, Inc. 01 Mar 2023 10 -$1,082,165 4 Chief Tech Officer, Co-Founder, Director, 10%+ Owner 02 Mar 2023, 20:50
DUOL Duolingo, Inc. 01 Feb 2023 7 -$955,859 4 Chief Tech Officer, Co-Founder, Director, 10%+ Owner 02 Feb 2023, 19:06
DUOL Duolingo, Inc. 09 Jan 2023 6 -$750,680 4 Chief Tech Officer, Co-Founder, Director, 10%+ Owner 11 Jan 2023, 15:44
DUOL Duolingo, Inc. 14 Dec 2022 3 -$755,032 4 Chief Tech Officer, Co-Founder, Director, 10%+ Owner 15 Dec 2022, 15:44
DUOL Duolingo, Inc. 12 Dec 2022 3 $0 4 Chief Tech Officer, Co-Founder, Director, 10%+ Owner 27 Jan 2023, 15:28
DUOL Duolingo, Inc. 01 Nov 2022 5 -$818,110 4 Chief Tech Officer, Co-Founder, Director, 10%+ Owner 02 Nov 2022, 16:52
DUOL Duolingo, Inc. 03 Oct 2022 6 -$965,418 4 Chief Tech Officer, Co-Founder, Director, 10%+ Owner 04 Oct 2022, 16:46
DUOL Duolingo, Inc. 01 Sep 2022 6 -$1,841,792 4 Chief Tech Officer, Co-Founder, Director, 10%+ Owner 06 Sep 2022, 20:20
DUOL Duolingo, Inc. 01 Aug 2022 7 -$942,588 4 Chief Tech Officer, Co-Founder, Director, 10%+ Owner 02 Aug 2022, 16:37
DUOL Duolingo, Inc. 01 Jul 2022 9 -$912,240 4 Chief Tech Officer, Co-Founder, Director, 10%+ Owner 05 Jul 2022, 16:39
DUOL Duolingo, Inc. 23 Jun 2022 8 -$1,967,803 4 Chief Tech Officer, Co-Founder, Director, 10%+ Owner 27 Jun 2022, 19:13
DUOL Duolingo, Inc. 16 Jun 2022 8 -$1,827,204 4 Chief Tech Officer, Co-Founder, Director, 10%+ Owner 21 Jun 2022, 16:28
DUOL Duolingo, Inc. 09 Jun 2022 8 -$1,959,027 4 Chief Tech Officer, Co-Founder, Director, 10%+ Owner 13 Jun 2022, 17:08
DUOL Duolingo, Inc. 01 Jun 2022 6 -$1,658,303 4 Chief Tech Officer, Co-Founder, Director, 10%+ Owner 03 Jun 2022, 16:14
DUOL Duolingo, Inc. 14 Dec 2021 3 $0 4 Chief Technology Officer,, Director, Co-Founder, 10%+ Owner 10 Feb 2022, 16:39
DUOL Duolingo, Inc. 08 Dec 2021 3 -$3,960 4 Chief Technology Officer,, Director, Co-Founder, 10%+ Owner 10 Dec 2021, 16:27
DUOL Duolingo, Inc. 15 Nov 2021 15 -$4,332,421 4 Chief Technology Officer,, Director, Co-Founder, 10%+ Owner 17 Nov 2021, 15:51
DUOL Duolingo, Inc. 15 Aug 2021 1 $0 4 Chief Technology Officer,, Director, Co-Founder, 10%+ Owner 22 Sep 2021, 17:17
DUOL Duolingo, Inc. 30 Jul 2021 3 -$5,100,000 4 Chief Technology Officer,, Director, Co-Founder, 10%+ Owner 02 Aug 2021, 21:48
DUOL Duolingo, Inc. 27 Jul 2021 0 $0 3 Chief Technology Officer,, Director, Co-Founder, 10%+ Owner 27 Jul 2021, 21:01