Hacker Severin (CIK 0001870272)

Latest company ownership

DUOL - Duolingo, Inc.
Role: Chief Tech Officer, Co-Founder
Shares held
3,451,294
Last filed at
Dec 3, 2025
Confidence Score
0.0
2025Q4
Confidence Score History
2021Q3 2025Q4

Recent buy/sell transactions

Exec date Filing date Company Role Signal Confidence Shares % of shares Under plan? Amount (USD)
Nov 19, 2025 Nov 20, 2025 Duolingo, Inc. Chief Tech Officer, Co-Founder Sell 5.0 -10,000 -99.29% ✓ $1.7M
Nov 4, 2025 Nov 6, 2025 Duolingo, Inc. Chief Tech Officer, Co-Founder Sell 5.0 -10,000 -99.29% ✓ $2.6M
Oct 20, 2025 Oct 22, 2025 Duolingo, Inc. Chief Tech Officer, Co-Founder Sell 5.0 -10,000 -99.29% ✓ $3.1M
Oct 6, 2025 Oct 7, 2025 Duolingo, Inc. Chief Tech Officer, Co-Founder Sell 5.0 -10,000 -99.29% ✓ $3.2M
Sep 19, 2025 Sep 22, 2025 Duolingo, Inc. Chief Tech Officer, Co-Founder Sell 5.0 -10,000 -99.29% ✓ $2.9M
Sep 5, 2025 Sep 9, 2025 Duolingo, Inc. Chief Tech Officer, Co-Founder Sell 5.0 -10,000 -99.29% ✓ $2.7M
Aug 19, 2025 Aug 21, 2025 Duolingo, Inc. Chief Tech Officer, Co-Founder Sell 5.0 -10,000 -99.29% ✓ $3.4M
Aug 5, 2025 Aug 7, 2025 Duolingo, Inc. Chief Tech Officer, Co-Founder Sell 5.0 -10,000 -99.29% ✓ $3.4M
Jul 21, 2025 Jul 22, 2025 Duolingo, Inc. Chief Tech Officer, Co-Founder Sell 5.0 -10,000 -99.29% ✓ $3.6M
Jul 7, 2025 Jul 9, 2025 Duolingo, Inc. Chief Tech Officer, Co-Founder Sell 5.0 -10,000 -99.29% ✓ $3.9M
Jun 20, 2025 Jun 23, 2025 Duolingo, Inc. Chief Tech Officer, Co-Founder Sell 5.0 -10,000 -99.29% ✓ $4.7M
Jun 5, 2025 Jun 9, 2025 Duolingo, Inc. Chief Tech Officer, Co-Founder Sell 3.8 -10,000 -99.29% ✓ $5.3M
May 19, 2025 May 20, 2025 Duolingo, Inc. Chief Tech Officer, Co-Founder Sell 3.8 -10,000 -99.29% ✓ $5.2M
May 5, 2025 May 7, 2025 Duolingo, Inc. Chief Tech Officer, Co-Founder Sell 5.0 -10,000 -99.29% ✓ $5M
Apr 21, 2025 Apr 23, 2025 Duolingo, Inc. Chief Tech Officer, Co-Founder Sell 5.0 -10,000 -99.29% ✓ $3.1M
Apr 7, 2025 Apr 9, 2025 Duolingo, Inc. Chief Tech Officer, Co-Founder Sell 5.0 -10,000 -99.29% ✓ $2.9M
Mar 19, 2025 Mar 21, 2025 Duolingo, Inc. Chief Tech Officer, Co-Founder Sell 5.0 -10,000 -99.29% ✓ $3M
Mar 5, 2025 Mar 6, 2025 Duolingo, Inc. Chief Tech Officer, Co-Founder Sell 5.0 -10,000 -99.29% ✓ $2.9M
Feb 19, 2025 Feb 21, 2025 Duolingo, Inc. Chief Tech Officer, Co-Founder Sell 5.0 -10,000 -99.29% ✓ $4.3M
Feb 5, 2025 Feb 6, 2025 Duolingo, Inc. Chief Tech Officer, Co-Founder Sell 5.0 -10,000 -99.29% ✓ $3.9M
Jan 21, 2025 Jan 23, 2025 Duolingo, Inc. Chief Tech Officer, Co-Founder Sell 5.0 -10,000 -99.29% ✓ $3.3M
Jan 6, 2025 Jan 7, 2025 Duolingo, Inc. Chief Tech Officer, Co-Founder Sell 5.0 -10,000 -99.29% ✓ $3.4M
Dec 19, 2024 Dec 20, 2024 Duolingo, Inc. Chief Tech Officer, Co-Founder Sell 5.0 -10,000 -99.29% ✓ $3.4M
Dec 13, 2024 Dec 16, 2024 Duolingo, Inc. Chief Tech Officer, Co-Founder Sell 2.5 -43,826 -99.84% ✓ $14.8M
Dec 12, 2024 Dec 13, 2024 Duolingo, Inc. Chief Tech Officer, Co-Founder Sell 2.5 -41,521 -99.83% ✓ $14.1M
Dec 11, 2024 Dec 13, 2024 Duolingo, Inc. Chief Tech Officer, Co-Founder Sell 2.5 -188,901 -99.96% ✓ $64.1M
Aug 1, 2024 Aug 2, 2024 Duolingo, Inc. Chief Tech Officer, Co-Founder Sell 5.0 -10,000 -99.29% ✓ $1.7M
Jul 1, 2024 Jul 2, 2024 Duolingo, Inc. Chief Tech Officer, Co-Founder Sell 5.0 -10,000 -99.29% ✓ $2M
Jun 3, 2024 Jun 5, 2024 Duolingo, Inc. Chief Tech Officer, Co-Founder Sell 5.0 -10,000 -99.29% ✓ $2M
May 1, 2024 May 3, 2024 Duolingo, Inc. Chief Tech Officer, Co-Founder Sell 5.0 -10,000 -99.29% ✓ $2.2M
Apr 1, 2024 Apr 2, 2024 Duolingo, Inc. Chief Tech Officer, Co-Founder Sell 5.0 -10,000 -99.29% ✓ $2.2M
Mar 1, 2024 Mar 4, 2024 Duolingo, Inc. Chief Tech Officer, Co-Founder Sell 5.0 -10,000 -99.29% ✓ $2.4M
Feb 1, 2024 Feb 5, 2024 Duolingo, Inc. Chief Tech Officer, Co-Founder Sell 5.0 -10,000 -99.29% ✓ $1.8M
Jan 2, 2024 Jan 3, 2024 Duolingo, Inc. Chief Tech Officer, Co-Founder Sell 5.0 -10,000 -99.29% ✓ $2.1M
Dec 1, 2023 Dec 4, 2023 Duolingo, Inc. Chief Tech Officer, Co-Founder Sell 5.0 -10,000 -99.29% ✓ $2.1M
Nov 1, 2023 Nov 2, 2023 Duolingo, Inc. Chief Tech Officer, Co-Founder Sell 5.0 -10,000 -99.29% ✓ $1.5M
Oct 2, 2023 Oct 5, 2023 Duolingo, Inc. Chief Tech Officer, Co-Founder Sell 5.0 -10,000 -99.29% ✓ $1.7M
Sep 1, 2023 Sep 6, 2023 Duolingo, Inc. Chief Tech Officer, Co-Founder Sell 17.5 -10,000 -99.29% ✗ $1.5M
May 1, 2023 May 2, 2023 Duolingo, Inc. Chief Tech Officer, Co-Founder Sell 5.0 -10,000 -99.29% ✓ $1.4M
Apr 3, 2023 Apr 4, 2023 Duolingo, Inc. Chief Tech Officer, Co-Founder Sell 5.0 -10,000 -99.29% ✓ $1.4M
Mar 1, 2023 Mar 2, 2023 Duolingo, Inc. Chief Tech Officer, Co-Founder Sell 5.0 -10,000 -99.29% ✓ $1.1M
Feb 1, 2023 Feb 2, 2023 Duolingo, Inc. Chief Tech Officer, Co-Founder Sell 7.5 -10,000 -99.29% ✓ $955.9K
Jan 9, 2023 Jan 11, 2023 Duolingo, Inc. Chief Tech Officer, Co-Founder Sell 7.5 -10,000 -99.29% ✓ $750.7K
Dec 14, 2022 Dec 15, 2022 Duolingo, Inc. Chief Tech Officer, Co-Founder Sell 7.5 -10,000 -99.29% ✓ $755K
Nov 1, 2022 Nov 2, 2022 Duolingo, Inc. Chief Tech Officer, Co-Founder Sell 7.5 -10,000 -99.29% ✓ $818.1K
Oct 3, 2022 Oct 4, 2022 Duolingo, Inc. Chief Tech Officer, Co-Founder Sell 7.5 -10,000 -99.29% ✓ $965.4K
Sep 1, 2022 Sep 6, 2022 Duolingo, Inc. Chief Tech Officer, Co-Founder Sell 7.5 -10,000 -99.29% ✓ $920.9K
Aug 1, 2022 Aug 2, 2022 Duolingo, Inc. Chief Tech Officer, Co-Founder Sell 7.5 -10,000 -99.29% ✓ $942.6K
Jul 1, 2022 Jul 5, 2022 Duolingo, Inc. Chief Tech Officer, Co-Founder Sell 7.5 -10,000 -99.29% ✓ $912.2K
Jun 23, 2022 Jun 27, 2022 Duolingo, Inc. Chief Tech Officer, Co-Founder Sell 5.0 -20,000 -99.64% ✓ $2M
Jun 16, 2022 Jun 21, 2022 Duolingo, Inc. Chief Tech Officer, Co-Founder Sell 5.0 -20,000 -99.64% ✓ $1.8M
Jun 9, 2022 Jun 13, 2022 Duolingo, Inc. Chief Tech Officer, Co-Founder Sell 5.0 -20,000 -99.64% ✓ $2M
Jun 1, 2022 Jun 3, 2022 Duolingo, Inc. Chief Tech Officer, Co-Founder Sell 5.0 -20,000 -99.64% ✓ $1.7M
Dec 8, 2021 Dec 10, 2021 Duolingo, Inc. Chief Technology Officer Sell 47.5 -36 -33.33% ✗ $4K
Nov 15, 2021 Nov 17, 2021 Duolingo, Inc. Chief Technology Officer Sell 5.0 -30,000 -100.00% ✓ $4.3M
Jul 30, 2021 Aug 2, 2021 Duolingo, Inc. Chief Technology Officer Sell 16.3 -50,000 -100.00% ✗ $5.1M