Keros Therapeutics, Inc. (KROS)

Latest Insider Confidence Score

2026Q1

40.2
Bearish

Company insider confidence (by quarter)

2020Q2 2026Q1

Largest shareholders

Insider Role (last 12 mo) Shares held Filed at
Seehra Jasbir CEO 392,723 Sep 5, 2025
Knowles Julius Director 232,727 Jan 5, 2022
Arkin Bio Ventures Limited Partnership 10% Owner 167,537 Apr 13, 2020
Arkin Bio Venture Partners Ltd. 10% Owner 167,537 Apr 13, 2020
Arkin Moshe 10% Owner 167,537 Apr 13, 2020

Recent buy/sell transactions

Exec date Filing date Insider Role Signal Confidence Shares % of shares Under plan? Amount (USD)
Feb 24, 2026 Feb 26, 2026 Seehra Jasbir CEO Neutral 52.5 - 0.00% ✗ -
Feb 24, 2026 Feb 26, 2026 Regnante Keith CFO Neutral 52.5 - 0.00% ✗ -
Feb 19, 2026 Feb 20, 2026 Seehra Jasbir CEO Sell 42.5 -7,015 -1.79% ✗ $113.4K
Feb 18, 2026 Feb 20, 2026 Lerner Lorena Raquel Chief Science Officer Sell 42.5 -3,873 -11.07% ✗ $63.3K
Feb 18, 2026 Feb 20, 2026 Cho Esther SVP, General Counsel Sell 42.5 -4,745 -10.66% ✗ $77.6K
Feb 18, 2026 Feb 20, 2026 Regnante Keith CFO Sell 42.5 -4,739 -10.77% ✗ $77.5K
Jan 7, 2026 Jan 9, 2026 Seehra Jasbir CEO Neutral 52.5 - 0.00% ✗ -
Nov 21, 2025 Dec 18, 2025 ORBIMED ADVISORS LLC Director Sell 17.5 -214,522 -21.06% ✗ $3.8M
Nov 21, 2025 Dec 18, 2025 GORDON CARL L Director Sell 17.5 -214,522 -21.06% ✗ $3.8M
Nov 21, 2025 Dec 18, 2025 Knowles Julius Director Sell 16.3 -322,021 -55.45% ✗ $5.7M
Oct 15, 2025 Oct 17, 2025 Pontifax Management 4 G.P. (2015) Ltd. 10% Owner Sell 15.0 -4,787,331 -99.78% ✗ $85M
Oct 15, 2025 Oct 15, 2025 ADAR1 Capital Management, LLC 10% Owner Sell 15.0 -5,389,264 -100.00% ✗ $95.7M
Sep 3, 2025 Sep 5, 2025 Seehra Jasbir CEO Neutral 90.0 +90,500 29.94% ✗ -
Aug 15, 2025 Lerner Lorena Raquel Chief Science Officer Neutral 52.5 - 0.00% ✗ -
Aug 15, 2025 Cho Esther SVP, General Counsel Neutral 52.5 - 0.00% ✗ -
Jun 20, 2025 Jun 24, 2025 ADAR1 Capital Management, LLC 10% Owner Neutral 52.5 - 0.00% ✗ -
May 16, 2025 Jun 12, 2025 ADAR1 Capital Management, LLC 10% Owner Neutral 52.5 - 0.00% ✗ -
Jun 11, 2025 Kariv Tomer Director Neutral 52.5 - 0.00% ✗ -
Jun 11, 2025 Nussbaum Ran Director Neutral 52.5 - 0.00% ✗ -
Jun 4, 2025 Jun 6, 2025 Knowles Julius Director Neutral 67.5 +5,250 0.91% ✗ -
Jun 4, 2025 Jun 6, 2025 GORDON CARL L Director Neutral 67.5 +5,250 0.52% ✗ -
Jun 4, 2025 Jun 6, 2025 Farzan Nima Director Neutral 90.0 +5,250 100.00% ✗ -
Jun 4, 2025 Jun 6, 2025 Kariv Tomer Director Neutral 55.0 +5,250 0.11% ✗ -
Jun 4, 2025 Jun 6, 2025 Nussbaum Ran Director Neutral 55.0 +5,250 0.11% ✗ -
Jun 4, 2025 Jun 6, 2025 Seth Alpna Director Neutral 90.0 +5,250 100.00% ✗ -
Jun 4, 2025 Jun 6, 2025 GRAY MARY ANN Director Neutral 90.0 +5,250 100.00% ✗ -
Jun 4, 2025 Jun 6, 2025 BIENAIME JEAN JACQUES Director Neutral 90.0 +5,250 2625.00% ✗ -
Apr 9, 2025 Apr 11, 2025 ADAR1 Capital Management, LLC 10% Owner Buy 100.0 +934,258 20.96% ✗ $9.5M
Apr 11, 2025 ADAR1 Capital Management, LLC 10% Owner Neutral 52.5 - 0.00% ✗ -
Apr 4, 2025 Apr 7, 2025 Seehra Jasbir CEO Neutral 52.5 - 0.00% ✗ -
Feb 18, 2025 Feb 19, 2025 CHYUNG YUNG H. Chief Medical Officer Neutral 90.0 +44,000 100.00% ✗ -
Feb 18, 2025 Feb 19, 2025 Regnante Keith CFO Neutral 90.0 +44,000 100.00% ✗ -
Feb 18, 2025 Feb 19, 2025 Rovaldi Christopher COO Neutral 90.0 +60,000 100.00% ✗ -
Jan 4, 2024 Jan 24, 2025 Regnante Keith CFO Sell 5.0 -40,000 -100.00% ✓ $1.8M
Nov 8, 2024 Nov 12, 2024 CHYUNG YUNG H. Chief Medical Officer Neutral 52.5 - 0.00% ✗ -
Nov 8, 2024 CHYUNG YUNG H. Chief Medical Officer Neutral 52.5 - 0.00% ✗ -
Aug 13, 2024 Aug 15, 2024 GORDON CARL L Director Sell 15.0 -250,000 -19.70% ✗ $11M
Aug 13, 2024 Aug 15, 2024 ORBIMED ADVISORS LLC Director Sell 15.0 -250,000 -19.70% ✗ $11M
Jun 3, 2024 Jun 5, 2024 BIENAIME JEAN JACQUES Director Neutral 52.5 - 0.00% ✗ -
Jun 5, 2024 BIENAIME JEAN JACQUES Director Neutral 52.5 - 0.00% ✗ -
May 30, 2024 Jun 3, 2024 Seth Alpna Director Neutral 52.5 - 0.00% ✗ -
May 30, 2024 Jun 3, 2024 Kariv Tomer Director Neutral 52.5 - 0.00% ✗ -
May 30, 2024 Jun 3, 2024 Nussbaum Ran Director Neutral 52.5 - 0.00% ✗ -
May 30, 2024 Jun 3, 2024 Knowles Julius Director Neutral 52.5 - 0.00% ✗ -
May 30, 2024 Jun 3, 2024 GRAY MARY ANN Director Neutral 52.5 - 0.00% ✗ -
May 30, 2024 Jun 3, 2024 GORDON CARL L Director Neutral 52.5 - 0.00% ✗ -
May 30, 2024 Jun 3, 2024 Farzan Nima Director Neutral 52.5 - 0.00% ✗ -
Feb 23, 2024 Feb 23, 2024 Seehra Jasbir CEO Neutral 52.5 - 0.00% ✗ -
Feb 13, 2024 Feb 15, 2024 Seehra Jasbir CEO Neutral 52.5 - 0.00% ✗ -
Feb 13, 2024 Feb 15, 2024 Regnante Keith CFO Neutral 52.5 - 0.00% ✗ -
Feb 13, 2024 Feb 15, 2024 Rovaldi Christopher COO Neutral 52.5 - 0.00% ✗ -
Feb 13, 2024 Feb 15, 2024 Cooper Simon Peter CHIEF MEDICAL OFFICER Neutral 52.5 - 0.00% ✗ -
Nov 4, 2023 Jan 8, 2024 Regnante Keith CFO Sell 5.0 -40,000 -100.00% ✓ $1.8M
Jun 8, 2023 Jun 12, 2023 Regnante Keith CFO Sell 5.0 -40,000 -81.16% ✓ $1.9M
Jun 6, 2023 Jun 8, 2023 GORDON CARL L Director Neutral 52.5 - 0.00% ✗ -
Jun 6, 2023 Jun 8, 2023 Seth Alpna Director Neutral 52.5 - 0.00% ✗ -
Jun 6, 2023 Jun 8, 2023 Kariv Tomer Director Neutral 52.5 - 0.00% ✗ -
Jun 6, 2023 Jun 8, 2023 Nussbaum Ran Director Neutral 52.5 - 0.00% ✗ -
Jun 6, 2023 Jun 8, 2023 Knowles Julius Director Neutral 52.5 - 0.00% ✗ -
Jun 6, 2023 Jun 8, 2023 GRAY MARY ANN Director Neutral 52.5 - 0.00% ✗ -
Jun 6, 2023 Jun 8, 2023 Farzan Nima Director Neutral 52.5 - 0.00% ✗ -
May 1, 2023 May 3, 2023 Seth Alpna Director Neutral 52.5 - 0.00% ✗ -
May 3, 2023 Seth Alpna Director Neutral 52.5 - 0.00% ✗ -
Apr 8, 2023 Apr 11, 2023 Seehra Jasbir CEO Neutral 52.5 - 0.00% ✗ -
Feb 16, 2023 Feb 17, 2023 Rovaldi Christopher COO Neutral 52.5 - 0.00% ✗ -
Feb 16, 2023 Feb 17, 2023 Cooper Simon Peter Chief Medical Officer Neutral 52.5 - 0.00% ✗ -
Feb 16, 2023 Feb 17, 2023 Regnante Keith CFO Neutral 52.5 - 0.00% ✗ -
Feb 16, 2023 Feb 17, 2023 Seehra Jasbir CEO Neutral 52.5 - 0.00% ✗ -
Apr 13, 2020 Jan 20, 2023 Knowles Julius Director Buy 61.3 +1,191 0.21% ✗ $25K
Nov 29, 2022 Nov 30, 2022 Pontifax Management 4 G.P. (2015) Ltd. 10% Owner Neutral 52.5 - 0.00% ✗ -
Nov 29, 2022 Nov 30, 2022 Nussbaum Ran Director Neutral 52.5 - 0.00% ✗ -
Nov 29, 2022 Nov 30, 2022 Kariv Tomer Director Neutral 52.5 - 0.00% ✗ -
Nov 30, 2022 Pontifax Management 4 G.P. (2015) Ltd. 10% Owner Neutral 52.5 - 0.00% ✗ -
Nov 30, 2022 Nussbaum Ran Director Neutral 52.5 - 0.00% ✗ -
Nov 30, 2022 Kariv Tomer Director Neutral 52.5 - 0.00% ✗ -
Jul 15, 2022 Jul 19, 2022 Lachey Jennifer Chief Scientific Officer Sell 5.0 -46,034 -32.62% ✓ $1.4M
Jul 13, 2022 Jul 15, 2022 Lachey Jennifer Chief Scientific Officer Sell 45.0 -1,916 -1.97% ✓ $57.5K
Jun 14, 2022 Jun 14, 2022 Lachey Jennifer Chief Scientific Officer Neutral 52.5 - 0.00% ✗ -
Jun 9, 2022 Jun 10, 2022 Seehra Jasbir CEO Neutral 52.5 - 0.00% ✗ -
Jun 1, 2022 Jun 3, 2022 Nussbaum Ran Director Neutral 52.5 - 0.00% ✗ -
Jun 1, 2022 Jun 3, 2022 Knowles Julius Director Neutral 52.5 - 0.00% ✗ -
Jun 1, 2022 Jun 3, 2022 Kariv Tomer Director Neutral 52.5 - 0.00% ✗ -
Jun 1, 2022 Jun 3, 2022 GRAY MARY ANN Director Neutral 52.5 - 0.00% ✗ -
Jun 1, 2022 Jun 3, 2022 GORDON CARL L Director Neutral 52.5 - 0.00% ✗ -
Jun 1, 2022 Jun 3, 2022 Farzan Nima Director Neutral 52.5 - 0.00% ✗ -
May 11, 2022 May 13, 2022 Lachey Jennifer Chief Scientific Officer Sell 32.5 -5,300 -5.82% ✓ $222K
Apr 11, 2022 Apr 13, 2022 Lachey Jennifer Chief Scientific Officer Sell 30.0 -5,300 -5.82% ✓ $332.7K
Apr 6, 2022 Apr 8, 2022 Rovaldi Christopher COO Sell 10.0 -1,728 -100.00% ✓ $112.3K
Apr 4, 2022 Apr 6, 2022 Lachey Jennifer Chief Scientific Officer Sell 26.3 -7,950 -8.49% ✓ $477K
Apr 1, 2022 Apr 5, 2022 Rovaldi Christopher COO Sell 13.8 -864 -100.00% ✓ $49.7K
Mar 11, 2022 Mar 15, 2022 Lachey Jennifer Chief Scientific Officer Sell 41.3 -2,650 -3.00% ✓ $141.4K
Feb 11, 2022 Feb 15, 2022 Lachey Jennifer Chief Scientific Officer Sell 41.3 -2,650 -3.00% ✓ $138K
Feb 1, 2022 Feb 3, 2022 Rovaldi Christopher COO Neutral 52.5 - 0.00% ✗ -
Feb 3, 2022 Rovaldi Christopher COO Neutral 52.5 - 0.00% ✗ -
Jan 21, 2022 Jan 25, 2022 Seehra Jasbir CEO Neutral 52.5 - 0.00% ✗ -
Jan 21, 2022 Jan 25, 2022 Regnante Keith CFO Neutral 52.5 - 0.00% ✗ -
Jan 21, 2022 Jan 25, 2022 Lachey Jennifer Chief Scientific Officer Neutral 52.5 - 0.00% ✗ -
Jan 21, 2022 Jan 25, 2022 Cooper Simon Peter Chief Medical Officer Neutral 52.5 - 0.00% ✗ -
Jan 11, 2022 Jan 13, 2022 Lachey Jennifer Chief Scientific Officer Sell 41.3 -2,650 -3.00% ✓ $142.4K
Jan 5, 2022 Jan 7, 2022 Lachey Jennifer Chief Scientific Officer Sell 41.3 -2,650 -3.00% ✓ $159K