ARWR

ARROWHEAD PHARMACEUTICALS, INC.

Pharmaceutical PreparationsNasdaqLarge accelerated filer

Total Trades

Buys

Sells

Largest Trade

N/A

Insiders

Institutional Funds

330

Inst. Value

$1M+

Activist Filings

Insider Trades

Insider	Title	Type	Value	Shares	Price	Date
Hamilton James C	Insider	SELL	$100K–$500K	3K	$35.53	Jul 5, 2023
Myszkowski Kenneth Allen	CFO	SELL	$500K+	15K	$36.20	Jun 29, 2023
GIVEN DOUGLAS B	Director	SELL	$100K–$500K	7K	$40.90	May 8, 2023
Anzalone Christopher Richard	CEO	SELL	$1M+	105K	$39.32	May 5, 2023
Anzalone Christopher Richard	CEO	EXERCISE	$100K–$500K	105K	$2.01	May 5, 2023
OLUKOTUN ADEOYE Y	Director	SELL	$100K–$500K	11K	$32.65	Mar 6, 2023
GIVEN DOUGLAS B	Director	SELL	$15K–$50K	875	$32.62	Mar 1, 2023
Waddill William D.	Director	GRANT	N/A	8K	—	Jan 12, 2023
Waddill William D.	Director	SELL	$50K–$100K	3K	$30.00	Jan 12, 2023
O'Brien Patrick	COO and General Co…	SELL	$500K+	15K	$37.39	Jan 7, 2023
Hamilton James C	Insider	SELL	$500K+	14K	$37.40	Jan 7, 2023
O'Brien Patrick	COO and General Co…	GRANT	N/A	65K	—	Jan 6, 2023
O'Brien Patrick	COO and General Co…	SELL	$500K+	18K	$38.33	Jan 6, 2023
Hamilton James C	Insider	GRANT	N/A	60K	—	Jan 6, 2023
Hamilton James C	Insider	SELL	$100K–$500K	10K	$38.38	Jan 6, 2023
Myszkowski Kenneth Allen	CFO	SELL	$1M+	31K	$40.00	Dec 30, 2022
San Martin Javier	Chief Medical Offi…	SELL	$500K+	20K	$29.99	Nov 22, 2022
Anzalone Christopher Richard	CEO	SELL	$1M+	146K	$51.91	Feb 14, 2022
Anzalone Christopher Richard	CEO	EXERCISE	$500K+	146K	$5.19	Feb 14, 2022
O'Brien Patrick	General Counsel	SELL	$1M+	33K	$61.72	Jan 8, 2022
Myszkowski Kenneth Allen	CFO	SELL	$1M+	40K	$61.70	Jan 7, 2022
Hamilton James C	Insider	SELL	$1M+	26K	$64.57	Jan 7, 2022
Waddill William D.	Director	SELL	$100K–$500K	5K	$64.72	Jan 5, 2022
OLUKOTUN ADEOYE Y	Director	SELL	$100K–$500K	4K	$64.75	Jan 5, 2022
De Backer Marianne	Director	SELL	$100K–$500K	5K	$64.71	Jan 5, 2022
PERRY MICHAEL S	Director	SELL	$100K–$500K	5K	$64.71	Jan 5, 2022

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Institutional Ownership

13F filings as of Dec 31, 2025 · 330 funds holding

Fund	Shares	Value	Type
VANGUARD GROUP INC	14.2M	$1M+	SH
STATE STREET CORP	6.4M	$1M+	SH
GEODE CAPITAL MANAGEMENT, LLC	2.8M	$1M+	SH
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP	2.1M	$1M+	SH
NORGES BANK	1.7M	$1M+	SH
Siren, L.L.C.	1.5M	$1M+	SH
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	1.4M	$1M+	SH
Fisher Asset Management, LLC	1.3M	$1M+	SH
Pictet Asset Management Holding SA	1.0M	$1M+	SH
Western Financial Corp/CA	820K	$1M+	SH
Assenagon Asset Management S.A.	685K	$1M+	SH
Connor, Clark & Lunn Investment Management Ltd.	663K	$1M+	SH
PUBLIC SECTOR PENSION INVESTMENT BOARD	479K	$1M+	SH
Bank of New York Mellon Corp	405K	$1M+	SH
Privium Fund Management B.V.	398K	$1M+	SH
BALYASNY ASSET MANAGEMENT L.P.	376K	$1M+	SH
Alyeska Investment Group, L.P.	375K	$1M+	SH
EVENTIDE ASSET MANAGEMENT, LLC	370K	$1M+	SH
RHUMBLINE ADVISERS	352K	$1M+	SH
UBS Group AG	334K	$1M+	SH