ARWR Form 144: Proposed sale of 10,000 shares

ARWR filed a Form 144 reporting a proposed sale of 10,000 common shares to be sold through Merrill Lynch (75 Rockefeller Plaza).

Rhea-AI Filing Summary

ARWR filed a Form 144 reporting a proposed sale of 10,000 common shares to be sold through Merrill Lynch (75 Rockefeller Plaza). The filing lists an aggregate value of $641,870.05 and a transaction date of 03/05/2026. The notice identifies the sale reason as Compensation with an effective date of 01/05/2025.

The filing also records prior sales: James Hamilton sold 40,164 common shares on 01/05/2026 for $2,534,478.03, listed under "Securities Sold During The Past 3 Months."

FAQ

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

What does ARWR’s Form 144 disclose about shares to be sold?

It discloses a proposed sale of 10,000 common shares through Merrill Lynch. The filing shows an aggregate value of $641,870.05 with a listing date of 03/05/2026 and a stated reason of Compensation.

Who sold shares recently according to the filing?

James Hamilton sold 40,164 common shares on 01/05/2026. The filing records the sale amount as $2,534,478.03 under "Securities Sold During The Past 3 Months."

Through which broker is the proposed sale being arranged?

The proposed 10,000-share sale is listed with Merrill Lynch at 75 Rockefeller Plaza. The filing names Merrill Lynch as the broker-dealer for the transaction entry.

What reason is given for the 10,000-share sale in the Form 144?

The reason listed is "Compensation." The filing pairs that reason with an effective/entry date of 01/05/2025 in the "Securities To Be Sold" section.

Does the filing show total proceeds or per-share price for the proposed sale?

It shows an aggregate value of $641,870.05 for the 10,000 shares. The document does not provide an explicit per-share price calculation; the aggregate figure is given as shown.

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

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Accepted by SEC EDGAR 03/05/2026 - 04:49 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	0001830755
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	Arrowhead Pharmaceuticals
SEC File Number	001-38042
Address of Issuer	177 E Colorado Blvd, Ste 700 Pasadena CALIFORNIA 91105
Phone	626-304-3400
Name of Person for Whose Account the Securities are To Be Sold	James Hamilton
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	Merrill Lynch 75 Rockefelelr Plaza, 2nd Fl New York NY 10019	10000	641870.05	140032190	03/05/2026	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	01/05/2025	Compensation	Issuer			10000	01/05/2025	Compensation

* 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
James Hamilton 177 E Colorado Blvd Ste 700 Pasadena CA 91105	Common	01/05/2026	40164	2534478.03

144: Remarks and Signature

Remarks
Date of Notice	03/05/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	12/02/2025
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	James Hamilton
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)