DAWN insider plans Rule 144 sale of 6,395 shares

An affiliate of DAWN filed a Rule 144 notice to sell 6,395 shares of common stock, with an aggregate market value of $74,187.76, through Morgan Stanley Smith Barney LLC on NASDAQ around February 17, 2026.

Rhea-AI Filing Summary

An affiliate of DAWN filed a Rule 144 notice to sell 6,395 shares of common stock, with an aggregate market value of $74,187.76, through Morgan Stanley Smith Barney LLC on NASDAQ around February 17, 2026.

The shares were acquired as restricted stock from the issuer on February 15, 2026. The filing lists 102,675,502 shares of the issuer’s common stock outstanding, providing context for the planned sale size.

FAQ

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

What does the DAWN Rule 144 filing disclose about upcoming share sales?

The filing discloses a planned sale of 6,395 DAWN common shares under Rule 144. These shares have an aggregate market value of $74,187.76 and are expected to be sold on NASDAQ through Morgan Stanley Smith Barney LLC around February 17, 2026.

How many DAWN shares are being sold and what is their market value?

The notice covers 6,395 common shares of DAWN with an aggregate market value of $74,187.76. This value is based on the market price used in the filing and reflects the total dollar amount for the proposed Rule 144 sale.

When were the DAWN shares in the Rule 144 filing acquired and how?

The shares in this Rule 144 filing were acquired on February 15, 2026 as restricted stock from the issuer. The filing shows the nature of the acquisition transaction as restricted stock, with the full 6,395 shares obtained on that same date.

What is the total number of DAWN shares outstanding mentioned in the filing?

The filing reports that 102,675,502 common shares of the issuer are outstanding. This figure provides a baseline for understanding the relative size of the 6,395-share planned sale described in the Rule 144 notice, though it is not itself being registered or sold here.

Which broker and exchange are involved in the DAWN Rule 144 share sale?

The planned Rule 144 sale will be executed through Morgan Stanley Smith Barney LLC Executive Financial Services. The filing specifies that the 6,395 DAWN common shares are intended to be sold on the NASDAQ stock market around February 17, 2026.

What representation does the seller make in the DAWN Rule 144 notice?

By signing the notice, the seller represents that they do not know any undisclosed material adverse information about the issuer’s current or prospective operations. This representation is required for Rule 144 sales and is highlighted in the document’s signature section.

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

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Accepted by SEC EDGAR 02/17/2026 - 06:08 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	0001744507
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	ADAM DUBOW
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	6395	74187.76	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			6395	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/ Adam Russell Dubow
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)