Security key
142038108
Caribou Biosciences, Inc. - Common Stock (CRBU)
CUSIP: 142038108
Q3 2025 13F Holders as of 30 Sep 2025
- Security type / class
- Equity / Common Stock
- Total 13F shares
- 37,024,074
- Total 13F value
- $86,267,579
- Share change
- -3,587,025
- Put/Call ratio
- 221%
- SEC-reported price per share
- $2.33
- Number of holders
- 115
- Value change
- -$6,898,753
- Number of buys
- 37
- Number of sells
- 73
- Shares outstanding
- 92,189,700
Holder snapshot
7 signals
Show 1 more signal
Security identity
1 source field
Report period
Q3 2025
Institutions
115
Top holders
10
CRBU full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q4 2025
Previous quarter: Q2 2025
Caribou Biosciences, Inc. SEC filings
Caribou Biosciences, Inc. company facts
Broader feeds
Reporting periods
Holder history for CUSIP 142038108
Recent filing periods:
Ownership snapshot
Top reported holders of CRBU - Caribou Biosciences, Inc. - Common Stock (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
Rachel E. Haurwitz
Disclosed value leader
PFIZER INC
Comparable rows
15/15
Latest evidence
30 Jun 2025
13D/G
13F
Lead comparable stake: 5%
13D/G row: Rachel E. Haurwitz
Showing 1-6 of 15 holder rows.
Quick read
Rachel E. Haurwitz leads the comparable SEC ownership view at 5%.
15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Comparable ownership
Top 5
Rachel E. Haurwitz
5%
VANGUARD GROUP INC
4.9%
BANK OF AMERICA CORP /DE/
2.2%
BlackRock, Inc.
2%
PFIZER INC
5.1%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Rachel E. Haurwitz |
13D/G
|
5%
|
$4,008,603
4,716,003 shares
|
$0 | 22 Apr 2025 |
| VANGUARD GROUP INC |
13F
13D/G
Company · The Vanguard Group
|
4.9%
from 13D/G
|
$5,153,231
4,089,866 shares
|
— | 30 Jun 2025 |
| BANK OF AMERICA CORP /DE/ |
13D/G
13F
Company
|
2.2%
|
$1,658,405
1,951,065 shares
|
$0 | 31 Dec 2024 |
| BlackRock, Inc. |
13F
13D/G
Company
|
2%
from 13D/G
|
$2,373,179
1,883,476 shares
|
— | 30 Jun 2025 |
| PFIZER INC |
13F
Company
|
5.1%
|
$5,909,943
4,690,431 shares
|
— | 30 Jun 2025 |
| Kynam Capital Management, LP |
13F
Company
|
3.3%
|
$3,865,395
3,067,774 shares
|
— | 30 Jun 2025 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q3 2025
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
115
Shares
37,024,074
Rows available
115
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q3 2025 vs Q2 2025 Across Filers
Q2 2025 holders
128
Q3 2025 holders
115
Holder diff
-13
| Investor | Q2 2025 Shares | Q3 2025 Shares | Share Diff | Share Chg % | Q2 2025 value | Q3 2025 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend