FORM 4 [ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).         
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES
                                                                                  
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Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940
                      

1. Name and Address of Reporting Person *

Myszkowski Kenneth Allen
2. Issuer Name and Ticker or Trading Symbol

ARROWHEAD PHARMACEUTICALS, INC. [ ARWR ]
5. Relationship of Reporting Person(s) to Issuer (Check all applicable)

_____ Director                    _____ 10% Owner
__X__ Officer (give title below)    _____ Other (specify below)
Chief Financial Officer
(Last)          (First)          (Middle)

177 E. COLORADO BLVD, SUITE 700
3. Date of Earliest Transaction (MM/DD/YYYY)

2/25/2020
(Street)

PASADENA, CA 91105
(City)        (State)        (Zip)
4. If Amendment, Date Original Filed (MM/DD/YYYY)

 
6. Individual or Joint/Group Filing (Check Applicable Line)

_X _ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)
2. Trans. Date 2A. Deemed Execution Date, if any 3. Trans. Code
(Instr. 8)
4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)
5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)
6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V Amount (A) or (D) Price
Common Stock 2/25/2020  M  12000 A$9.90 396223 D  
Common Stock 2/25/2020  M  2000 A$5.19 398223 D  
Common Stock 2/25/2020  M  6495 A$14.54 404718 D  
Common Stock 2/25/2020  M  12116 A$7.75 416834 D  
Common Stock 2/25/2020  M  10834 A$6.15 427668 D  

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security
(Instr. 3)
2. Conversion or Exercise Price of Derivative Security3. Trans. Date3A. Deemed Execution Date, if any4. Trans. Code
(Instr. 8)
5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)
6. Date Exercisable and Expiration Date7. Title and Amount of Securities Underlying Derivative Security
(Instr. 3 and 4)
8. Price of Derivative Security
(Instr. 5)
9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Stock Option (right to buy) $9.90 2/25/2020  M     12000  9/1/2010 (1)8/16/2020 Common Stock 12000 $0.00 104116 D  
Stock Option (right to buy) $5.19 2/25/2020  M     2000  3/1/2012 (1)2/16/2022 Common Stock 2000 $0.00 102116 D  
Stock Option (right to buy) $14.54 2/25/2020  M     6495  3/1/2014 (1)2/6/2024 Common Stock 6495 $0.00 95621 D  
Stock Option (right to buy) $7.75 2/25/2020  M     12116  4/6/2015 (1)3/6/2025 Common Stock 12116 $0.00 83505 D  
Stock Option (right to buy) $6.15 2/25/2020  M     10834  2/1/2016 (1)1/1/2026 Common Stock 10834 $0.00 72671 D  

Explanation of Responses:
(1) Represents the first vesting date. Option vested over four years from date of grant.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director10% OwnerOfficerOther
Myszkowski Kenneth Allen
177 E. COLORADO BLVD
SUITE 700
PASADENA, CA 91105


Chief Financial Officer

Signatures
/s/ Ken Myszkowski2/27/2020
**Signature of Reporting PersonDate

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