Caribou Biosciences, Inc. (CRBU)

Latest Insider Confidence Score

2026Q1

59.3
Bullish

Company insider confidence (by quarter)

2021Q3 2026Q1

Largest shareholders

Insider Role (last 12 mo) Shares held Filed at
Haurwitz Rachel E. CEO 3,349,395 Feb 22, 2024
Fmr Llc — 1,464,775 Jul 29, 2021
McClung Barbara G Chief Legal Officer 170,000 Feb 21, 2025
Khan Ruhi Ahmad Chief Business Officer 170,000 Feb 21, 2025
Kelly Timothy P Chief Technology Officer 170,000 Feb 21, 2025

Recent buy/sell transactions

Exec date Filing date Insider Role Signal Confidence Shares % of shares Under plan? Amount (USD)
Feb 25, 2026 Feb 27, 2026 Kelly Timothy P Chief Technology Officer Sell 26.3 -6,228 -7.85% ✗ $12K
Feb 20, 2026 Feb 24, 2026 Kelly Timothy P Chief Technology Officer Sell 90.0 +41,853 111.61% ✗ $6.2K
Feb 20, 2026 Feb 24, 2026 MCCLUNG BARBARA G Chief Legal Officer Sell 86.3 +38,062 8.58% ✓ $13.6K
Feb 20, 2026 Feb 24, 2026 Khan Ruhi Ahmad Chief Business Officer Sell 91.3 +38,062 56.86% ✓ $13.6K
Feb 20, 2026 Feb 24, 2026 Albertson Tina M. Chief Medical Officer Sell 90.0 +53,934 369.69% ✓ $2.1K
Feb 20, 2026 Feb 20, 2026 Zheng Ran Director Neutral 52.5 - 0.00% ✗ -
Feb 20, 2026 Feb 20, 2026 Whiting Nancy Director Neutral 52.5 - 0.00% ✗ -
Feb 20, 2026 Feb 20, 2026 Sacks Natalie Director Neutral 52.5 - 0.00% ✗ -
Feb 20, 2026 Feb 20, 2026 Richardson-Heron Dara Director Neutral 52.5 - 0.00% ✗ -
Feb 20, 2026 Feb 20, 2026 JOHNSON DAVID LEE Director Neutral 52.5 - 0.00% ✗ -
Feb 20, 2026 Feb 20, 2026 GUGGENHIME ANDREW Director Neutral 52.5 - 0.00% ✗ -
Feb 20, 2026 Feb 20, 2026 Braunstein Scott Director Neutral 52.5 - 0.00% ✗ -
Feb 20, 2026 Feb 20, 2026 Ryali Sriram CFO Neutral 90.0 +55,000 316.82% ✗ -
Feb 20, 2026 Feb 20, 2026 Haurwitz Rachel E. CEO Neutral 82.5 +151,700 4.14% ✗ -
Mar 14, 2025 Mar 17, 2025 Haurwitz Rachel E. CEO Buy 68.8 +20,000 0.55% ✗ $20.4K
Feb 20, 2025 Feb 21, 2025 Haurwitz Rachel E. CEO Neutral 82.5 +136,750 3.90% ✗ -
Feb 20, 2025 Feb 21, 2025 Albertson Tina M. Chief Medical Officer Neutral 90.0 +14,589 100.00% ✗ -
Feb 20, 2025 Feb 21, 2025 MCCLUNG BARBARA G Chief Legal Officer Sell 85.0 +33,936 8.29% ✓ $4.8K
Feb 20, 2025 Feb 21, 2025 Khan Ruhi Ahmad Chief Business Officer Sell 90.0 +33,936 102.84% ✓ $4.8K
Feb 20, 2025 Feb 21, 2025 Kelly Timothy P Chief Technology Officer Neutral 90.0 +37,500 100.00% ✗ -
Feb 20, 2025 Feb 21, 2025 Kanner Steven Chief Scientific Officer Sell 85.0 +33,936 8.53% ✓ $4.8K
Feb 20, 2025 Feb 21, 2025 Zheng Ran Director Neutral 52.5 - 0.00% ✗ -
Feb 20, 2025 Feb 21, 2025 Whiting Nancy Director Neutral 52.5 - 0.00% ✗ -
Feb 20, 2025 Feb 21, 2025 Sacks Natalie Director Neutral 52.5 - 0.00% ✗ -
Feb 20, 2025 Feb 21, 2025 Richardson-Heron Dara Director Neutral 52.5 - 0.00% ✗ -
Feb 20, 2025 Feb 21, 2025 JOHNSON DAVID LEE Director Neutral 52.5 - 0.00% ✗ -
Feb 20, 2025 Feb 21, 2025 GUGGENHIME ANDREW Director Neutral 52.5 - 0.00% ✗ -
Feb 20, 2025 Feb 21, 2025 Braunstein Scott Director Neutral 52.5 - 0.00% ✗ -
Jan 29, 2025 Jan 30, 2025 Ryali Sriram CFO Buy 91.3 +17,360 100.00% ✗ $24.7K
Jan 10, 2025 Jan 10, 2025 Ryali Sriram CFO Neutral 52.5 - 0.00% ✗ -
Jan 10, 2025 Ryali Sriram CFO Neutral 52.5 - 0.00% ✗ -
Nov 20, 2024 Nov 22, 2024 Fischesser Ryan VP of Finance and Controller Neutral 90.0 +25,000 26.64% ✗ -
Oct 4, 2024 Fischesser Ryan VP of Finance and Controller Neutral 52.5 - 0.00% ✗ -
Aug 19, 2024 Aug 20, 2024 Albertson Tina M. Chief Medical Officer Neutral 52.5 - 0.00% ✗ -
Aug 20, 2024 Albertson Tina M. Chief Medical Officer Neutral 52.5 - 0.00% ✗ -
Feb 20, 2024 Feb 22, 2024 O'Byrne Jason CFO Neutral 90.0 +33,000 125.84% ✗ -
Feb 20, 2024 Feb 22, 2024 MCCLUNG BARBARA G Chief Legal Officer Neutral 85.0 +33,000 8.76% ✗ -
Feb 20, 2024 Feb 22, 2024 Khan Ruhi Ahmad Chief Business Officer Neutral 90.0 +33,000 100.00% ✗ -
Feb 20, 2024 Feb 22, 2024 Haurwitz Rachel E. CEO Neutral 82.5 +118,700 3.50% ✗ -
Feb 20, 2024 Feb 22, 2024 Kanner Steven Chief Scientific Officer Neutral 85.0 +33,000 9.32% ✗ -
Feb 20, 2024 Feb 22, 2024 Zheng Ran Director Neutral 52.5 - 0.00% ✗ -
Feb 20, 2024 Feb 22, 2024 Whiting Nancy Director Neutral 52.5 - 0.00% ✗ -
Feb 20, 2024 Feb 22, 2024 Sacks Natalie Director Neutral 52.5 - 0.00% ✗ -
Feb 20, 2024 Feb 22, 2024 Richardson-Heron Dara Director Neutral 52.5 - 0.00% ✗ -
Feb 20, 2024 Feb 22, 2024 JOHNSON DAVID LEE Director Neutral 52.5 - 0.00% ✗ -
Feb 20, 2024 Feb 22, 2024 GUGGENHIME ANDREW Director Neutral 52.5 - 0.00% ✗ -
Feb 20, 2024 Feb 22, 2024 Braunstein Scott Director Neutral 52.5 - 0.00% ✗ -
Feb 6, 2024 Feb 8, 2024 Kanner Steven Chief Scientific Officer Neutral 52.5 - 0.00% ✗ -
Jan 10, 2024 Kelly Timothy P Chief Technology Officer Neutral 52.5 - 0.00% ✗ -
Jan 8, 2024 Jan 9, 2024 Kelly Timothy P Chief Technology Officer Neutral 52.5 - 0.00% ✗ -
Jan 9, 2024 Kelly Timothy P Chief Technology Officer Neutral 52.5 - 0.00% ✗ -
Jun 8, 2023 Jun 9, 2023 Haurwitz Rachel E. CEO Neutral 52.5 - 0.00% ✗ -
Mar 20, 2023 Mar 22, 2023 Haurwitz Rachel E. CEO Neutral 52.5 - 0.00% ✗ -
Feb 21, 2023 Feb 23, 2023 Haurwitz Rachel E. CEO Neutral 52.5 - 0.00% ✗ -
Feb 21, 2023 Feb 23, 2023 Kanner Steven Chief Scientific Officer Neutral 52.5 - 0.00% ✗ -
Feb 21, 2023 Feb 23, 2023 Richardson-Heron Dara Director Neutral 52.5 - 0.00% ✗ -
Feb 21, 2023 Feb 23, 2023 Khan Ruhi Ahmad Chief Business Officer Neutral 52.5 - 0.00% ✗ -
Feb 21, 2023 Feb 23, 2023 Sacks Natalie Director Neutral 52.5 - 0.00% ✗ -
Feb 21, 2023 Feb 23, 2023 Braunstein Scott Director Neutral 52.5 - 0.00% ✗ -
Feb 21, 2023 Feb 23, 2023 GUGGENHIME ANDREW Director Neutral 52.5 - 0.00% ✗ -
Feb 21, 2023 Feb 23, 2023 MCCLUNG BARBARA G Chief Legal Officer Neutral 52.5 - 0.00% ✗ -
Feb 21, 2023 Feb 23, 2023 Rizvi Syed Ali-aamir Chief Medical Officer Neutral 52.5 - 0.00% ✗ -
Feb 21, 2023 Feb 23, 2023 Zheng Ran Director Neutral 52.5 - 0.00% ✗ -
Feb 21, 2023 Feb 23, 2023 Whiting Nancy Director Neutral 52.5 - 0.00% ✗ -
Feb 21, 2023 Feb 23, 2023 O'Byrne Jason CFO Neutral 52.5 - 0.00% ✗ -
Feb 21, 2023 Feb 23, 2023 JOHNSON DAVID LEE Director Neutral 52.5 - 0.00% ✗ -
Jan 19, 2023 Jan 20, 2023 Rizvi Syed Ali-aamir Chief Medical Officer Sell 46.3 -5,627 -8.66% ✗ $35.5K
Dec 2, 2022 Dec 2, 2022 Kanner Steven Chief Scientific Officer Neutral 52.5 - 0.00% ✗ -
Oct 6, 2022 Oct 7, 2022 Fischesser Ryan VP of Finance and Controller Sell 22.5 -10,000 -8.31% ✗ $108K
Sep 15, 2022 Sep 16, 2022 MCCLUNG BARBARA G Chief Legal Officer Neutral 52.5 - 0.00% ✗ -
Aug 25, 2022 Aug 26, 2022 Kanner Steven Chief Scientific Officer Sell 22.5 -43,248 -12.52% ✓ $485.2K
Aug 22, 2022 Aug 24, 2022 Khan Ruhi Ahmad Chief Business Officer Neutral 52.5 - 0.00% ✗ -
Aug 22, 2022 Aug 24, 2022 Fischesser Ryan VP of Finance and Controller Neutral 82.5 +4,848 4.20% ✗ -
May 18, 2022 May 18, 2022 JOHNSON DAVID LEE Director Neutral 52.5 - 0.00% ✗ -
May 13, 2022 May 17, 2022 Kanner Steven Chief Scientific Officer Neutral 52.5 - 0.00% ✗ -
May 12, 2022 JOHNSON DAVID LEE Director Neutral 52.5 - 0.00% ✗ -
May 9, 2022 May 10, 2022 Haurwitz Rachel E. CEO Neutral 52.5 - 0.00% ✗ -
Jan 26, 2022 May 10, 2022 Haurwitz Rachel E. CEO Neutral 52.5 - 0.00% ✗ -
May 5, 2022 May 6, 2022 Fischesser Ryan VP of Finance and Controller Neutral 52.5 - 0.00% ✗ -
Mar 15, 2022 Mar 17, 2022 Fischesser Ryan VP of Finance and Controller Neutral 52.5 - 0.00% ✗ -
Mar 4, 2022 Mar 7, 2022 Kanner Steven Chief Scientific Officer Neutral 52.5 - 0.00% ✗ -
Sep 27, 2021 Feb 9, 2022 Haurwitz Rachel E. CEO Neutral 52.5 - 0.00% ✗ -
Feb 8, 2022 Feb 8, 2022 O'Byrne Jason CFO Neutral 52.5 - 0.00% ✗ -
Jan 26, 2022 Jan 27, 2022 Haurwitz Rachel E. CEO Neutral 52.5 - 0.00% ✗ -
Jan 25, 2022 Jan 25, 2022 Rizvi Syed Ali-aamir Chief Medical Officer Neutral 90.0 +60,000 1200.00% ✗ -
Jan 24, 2022 Rizvi Syed Ali-aamir Chief Medical Officer Neutral 52.5 - 0.00% ✗ -
Jan 11, 2022 Jan 12, 2022 Fischesser Ryan VP of Finance and Controller Buy 86.3 +7,387 7.26% ✗ $29.6K
Dec 20, 2021 Dec 22, 2021 Whiting Nancy Director Neutral 52.5 - 0.00% ✗ -
Dec 20, 2021 Dec 21, 2021 Zheng Ran Director Neutral 52.5 - 0.00% ✗ -
Dec 20, 2021 Dec 21, 2021 Whiting Nancy Director Neutral 52.5 - 0.00% ✗ -
Dec 20, 2021 Dec 21, 2021 Sacks Natalie Director Neutral 52.5 - 0.00% ✗ -
Dec 20, 2021 Dec 21, 2021 O'Byrne Jason CFO Neutral 52.5 - 0.00% ✗ -
Dec 20, 2021 Dec 21, 2021 MCCLUNG BARBARA G Chief Legal Officer Neutral 52.5 - 0.00% ✗ -
Dec 20, 2021 Dec 21, 2021 Kanner Steven Chief Scientific Officer Neutral 52.5 - 0.00% ✗ -
Dec 20, 2021 Dec 21, 2021 Haurwitz Rachel E. CEO Neutral 52.5 - 0.00% ✗ -
Dec 20, 2021 Dec 21, 2021 GUGGENHIME ANDREW Director Neutral 52.5 - 0.00% ✗ -
Dec 20, 2021 Dec 21, 2021 Fischesser Ryan VP of Finance and Controller Buy 77.5 +1,136 1.13% ✗ $3.1K
Dec 20, 2021 Dec 21, 2021 Braunstein Scott Director Neutral 52.5 - 0.00% ✗ -
Dec 7, 2021 Dec 8, 2021 MCCLUNG BARBARA G Chief Legal Officer Buy 78.8 +6,127 1.79% ✗ $16.5K
Nov 15, 2021 Nov 16, 2021 Khan Ruhi Ahmad Chief Business Officer Neutral 52.5 - 0.00% ✗ -