CRBU
insider transactionsCaribou Biosciences, Inc. — buys & sells by directors, officers and 10% owners A shareholder owning more than 10% of the company. Must report trades, but usually a weaker signal than an officer or director. (SEC Form 4).
Net shares · 365d
-24.3K
0 buy · 24.3K sell
Net value · 365d
-$47.5K
$0 in · $47.5K out
Sentiment · 365d
Net selling
0% buying · 100% selling
Open-market trades · 365d
5
0 buy · 24.3K sell
Net buy / sell volume
Not enough data to chart yet.
Tap or hover the chart for daily net volume. Green = net buying, red = net selling.
All transactions
-
Sell·S
Chief Technology Officer
$12.0K
6.2K sh · $1.93
Own -8%
-
Sell·S
Chief Business Officer
$13.6K
6.9K sh · $1.96
Own -6%
-
Sell·S
Chief Technology Officer
$6.2K
3.1K sh · $1.96
Own -4%
-
Sell·S
Chief Legal Officer
$13.6K
6.9K sh · $1.96
Own -1%
-
Sell·S
Chief Medical Officer · 10b5-1
$2.1K
1.1K sh · $1.96
Own -2%
-
Grant·A
Director
$0
45.0K sh
Own New
-
Grant·A
Director
$0
45.0K sh
Own New
-
Grant·A
Director
$0
45.0K sh
Own New
-
Grant·A
Sriram Ryali KEY
Chief Financial Officer
$0
247.5K sh
Own New
-
Grant·A
Sriram Ryali KEY
Chief Financial Officer
$0
55.0K sh
Own +317%
-
Grant·A
Director
$0
45.0K sh
Own New
-
Grant·A
Director
$0
45.0K sh
Own New
-
Grant·A
President and CEO
$0
682.5K sh
Own New
-
Grant·A
President and CEO
$0
151.7K sh
Own +51%
-
Grant·A
Director
$0
45.0K sh
Own New
-
Grant·A
Chief Business Officer
$0
202.5K sh
Own New
-
Grant·A
Chief Business Officer
$0
45.0K sh
Own +67%
-
Grant·A
Chief Technology Officer
$0
202.5K sh
Own New
-
Grant·A
Chief Technology Officer
$0
45.0K sh
Own +120%
-
Grant·A
Chief Legal Officer
$0
202.5K sh
Own New
-
Grant·A
Chief Legal Officer
$0
45.0K sh
Own +10%
-
Grant·A
Chief Medical Officer · 10b5-1
$0
247.5K sh
Own New
-
Grant·A
Chief Medical Officer · 10b5-1
$0
55.0K sh
Own +377%
| Date▾ | Insider | Type | Shares | Value |
|---|---|---|---|---|
| Feb 25, 2026 | Timothy P Kelly | Sell S | 6.2K | $12.0K |
| Feb 24, 2026 | Ruhi Ahmad Khan | Sell S | 6.9K | $13.6K |
| Feb 24, 2026 | Timothy P Kelly | Sell S | 3.1K | $6.2K |
| Feb 24, 2026 | Barbara G Mcclung | Sell S | 6.9K | $13.6K |
| Feb 24, 2026 | Tina M. Albertson 10b5-1 | Sell S | 1.1K | $2.1K |
| Feb 20, 2026 | Dara Richardson-Heron | Grant A | 45.0K | $0 |
| Feb 20, 2026 | Ran Zheng | Grant A | 45.0K | $0 |
| Feb 20, 2026 | Nancy Whiting | Grant A | 45.0K | $0 |
| Feb 20, 2026 | Sriram Ryali KEY | Grant A | 247.5K | $0 |
| Feb 20, 2026 | Sriram Ryali KEY | Grant A | 55.0K | $0 |
| Feb 20, 2026 | David Lee Johnson | Grant A | 45.0K | $0 |
| Feb 20, 2026 | Natalie Sacks | Grant A | 45.0K | $0 |
| Feb 20, 2026 | Rachel E. Haurwitz KEY | Grant A | 682.5K | $0 |
| Feb 20, 2026 | Rachel E. Haurwitz KEY | Grant A | 151.7K | $0 |
| Feb 20, 2026 | Andrew Guggenhime | Grant A | 45.0K | $0 |
| Feb 20, 2026 | Ruhi Ahmad Khan | Grant A | 202.5K | $0 |
| Feb 20, 2026 | Ruhi Ahmad Khan | Grant A | 45.0K | $0 |
| Feb 20, 2026 | Timothy P Kelly | Grant A | 202.5K | $0 |
| Feb 20, 2026 | Timothy P Kelly | Grant A | 45.0K | $0 |
| Feb 20, 2026 | Barbara G Mcclung | Grant A | 202.5K | $0 |
| Feb 20, 2026 | Barbara G Mcclung | Grant A | 45.0K | $0 |
| Feb 20, 2026 | Tina M. Albertson 10b5-1 | Grant A | 247.5K | $0 |
| Feb 20, 2026 | Tina M. Albertson 10b5-1 | Grant A | 55.0K | $0 |
About CRBU insider trading
This page tracks insider transactions for Caribou Biosciences, Inc. (CRBU) reported to the U.S. Securities and Exchange Commission on Form 4. Corporate insiders — directors, executive officers and beneficial owners of more than 10% of the stock — must disclose their trades within two business days. Open-market purchases (code P) and sales (code S) made at the insider's discretion are the most-watched opportunistic signals, while awards (A), option exercises (M) and tax-withholding (F) reflect compensation rather than conviction. Trades marked 10b5-1 were made under a pre-arranged plan and are considered routine. A cluster buy — several insiders buying within a short window — is historically a stronger bullish indicator than any single trade.