DAWN holder plans Rule 144 sale of 5,814 shares

A holder of DAWN common stock filed a Rule 144 notice to sell up to 5,814 shares on NASDAQ through Morgan Stanley Smith Barney LLC, with an indicated aggregate market value of 67,447.63.

Rhea-AI Filing Summary

A holder of DAWN common stock filed a Rule 144 notice to sell up to 5,814 shares on NASDAQ through Morgan Stanley Smith Barney LLC, with an indicated aggregate market value of 67,447.63. The filing lists total common shares outstanding as 102,675,502.

The shares to be sold were acquired on 02/15/2026 as restricted stock from the issuer, with the nature of payment described as not applicable. By signing the notice, the seller represents that they are not aware of any material adverse, nonpublic information about the issuer’s current or prospective operations.

FAQ

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

What does the DAWN Form 144 filing disclose about planned share sales?

The Form 144 for DAWN discloses a plan to sell up to 5,814 common shares on NASDAQ. The filing shows an aggregate market value of about 67,447.63, providing transparency into a relatively small planned secondary sale under Rule 144.

How many DAWN shares are outstanding according to this Form 144?

The Form 144 lists 102,675,502 DAWN common shares as outstanding. This figure offers context for the planned Rule 144 sale of 5,814 shares, indicating that the proposed transaction represents a very small fraction of the company’s total share count.

When and how were the DAWN shares in this Form 144 acquired?

The shares in this DAWN Form 144 were acquired on 02/15/2026 as restricted stock from the issuer. The nature of payment is described as not applicable, suggesting a non-cash or award-type acquisition rather than an ordinary open-market purchase.

Which broker will handle the planned DAWN Rule 144 share sale?

The Form 144 indicates that Morgan Stanley Smith Barney LLC Executive Financial Services will broker the DAWN share sale. The shares are planned to be sold on the NASDAQ exchange, providing an established marketplace and standard execution channels for the transaction.

What representations does the seller make in DAWN’s Form 144 notice?

In the DAWN Form 144, the seller represents that they do not know of any material adverse, nonpublic information about the issuer’s current or prospective operations. This representation is required when selling restricted or control securities under Rule 144.

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Accepted by SEC EDGAR 02/17/2026 - 06:13 PM EST 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	0001855298
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	DAY ONE BIOPHARMACEUTICALS, INC.
SEC File Number	001-40431
Address of Issuer	1800 Sierra Point Parkway, Suite 200 Brisbane CALIFORNIA 94005
Phone	(650) 484-0899
Name of Person for Whose Account the Securities are To Be Sold	LAUREN MERENDINO
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	5814	67447.63	102675502	02/17/2026	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	02/15/2026	Restricted Stock	Issuer			5814	02/15/2026	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

Nothing to Report

144: Remarks and Signature

Remarks
Date of Notice	02/17/2026
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/ Lauren Merendino
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)