Form 144: Timothy Kelly reports sale of CRBU shares

Timothy Kelly reported proposed sales of common stock via a Form 144.

Rhea-AI Filing Summary

Timothy Kelly reported proposed sales of common stock via a Form 144. The filing lists 6228 shares of restricted common stock dated 02/20/2026 and shows 3147 common shares sold during the past three months on 02/24/2026 with an amount of 6162.14. The transaction is reported in connection with Nasdaq-listed securities.

Insights

Insider Transactions Analyst

Form 144 shows a reported sale and a proposed sale by an insider.

The filing lists a proposed sale of 6228 restricted common shares dated 02/20/2026 and records that 3147 common shares were sold on 02/24/2026 for 6162.14. These figures are presented as the reported amounts; timing and methods are the dates shown.

Cash‑flow treatment and intended distribution methods are not detailed in the excerpt; subsequent filings or confirmations would state settlement details if required.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What does CRBU's Form 144 disclosure show?

The Form 144 shows a proposed sale of 6228 restricted common shares dated 02/20/2026 and a sale of 3147 common shares on 02/24/2026 with 6162.14 recorded alongside that sale.

Who is the reporting person on the CRBU Form 144?

The reporting person named is Timothy Kelly, with an address shown as 2929 7TH STREET, SUITE 105, BERKELEY CA 94710 in the filing excerpt provided.

What security type is listed on the CRBU Form 144?

The filing lists Common stock, characterized as Restricted Stock for the proposed sale dated 02/20/2026, associated with a Nasdaq-listed security in the excerpt.

When were the reported transactions dated on the CRBU Form 144?

The proposed restricted stock sale is dated 02/20/2026 and the recorded sale during the past three months is dated 02/24/2026, as shown in the excerpt.

How many shares did Timothy Kelly sell recently according to the filing?

The excerpt reports that 3147 common shares were sold on 02/24/2026, with an associated amount of 6162.14 shown in the record.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 02/25/2026 - 05:16 PM Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001754067
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	CARIBOU BIOSCIENCES, INC.
SEC File Number	001-40631
Address of Issuer	2929 7TH STREET, SUITE 105 BERKELEY CALIFORNIA 94710
Phone	510-982-6030
Name of Person for Whose Account the Securities are To Be Sold	TIMOTHY KELLY
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	6228	12050.56	93468038	02/25/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	02/20/2026	Restricted Stock	Issuer			6228	02/20/2026	Not Applicable

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Timothy Kelly 2929 7TH STREET, SUITE 105 BERKELEY CA 94710	Common	02/24/2026	3147	6162.14

144: Remarks and Signature

Remarks
Date of Notice	02/25/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Timothy Patrick Kelly
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)