Patrick O'brien - Net Worth and Insider Trading
Patrick O'brien Net Worth
The estimated net worth of Patrick O'brien is at least $40 Million dollars as of 2026-09-09. Patrick O'brien is the COO of Arrowhead Pharmaceuticals Inc and owns about 474,908 shares of Arrowhead Pharmaceuticals Inc (ARWR) stock worth over $40 Million. Details can be seen in Patrick O'brien's Latest Holdings Summary section.
Disclaimer: The insider information is derived from SEC filings. The estimated net worth is based on the final shares held after open market or private purchases and sales of common stock with a transaction code of "P" or "S" on Form 4, assuming that Patrick O'brien has not made any transactions after 2026-01-05 and currently still holds the listed stock(s). Please note that this estimate may not reflect the actual net worth.
Transaction Summary of Patrick O'brien
Patrick O'brien Insider Ownership Reports
Based on ownership reports from SEC filings, as the reporting owner, Patrick O'brien owns 1 companies in total, including Arrowhead Pharmaceuticals Inc (ARWR) .
Click here to see the complete history of Patrick O'brien’s form 4 insider trades.
Insider Ownership Summary of Patrick O'brien
| Ticker | Company | Transaction Date | Type of Owner |
|---|---|---|---|
| ARWR | Arrowhead Pharmaceuticals Inc | 2026-01-05 | General Counsel |
Patrick O'brien Latest Holdings Summary
Patrick O'brien currently owns a total of 1 stock. Patrick O'brien owns 474,908 shares of Arrowhead Pharmaceuticals Inc (ARWR) as of January 5, 2026, with a value of $40 Million.
Latest Holdings of Patrick O'brien
| Ticker | Company | Latest Transaction Date | Shares Owned | Current Price ($) | Current Value ($) |
|---|---|---|---|---|---|
| ARWR | Arrowhead Pharmaceuticals Inc | 2026-01-05 | 474,908 | 84.86 | 40,300,693 |
Holding Weightings of Patrick O'brien
Patrick O'brien Form 4 Trading Tracker
According to the SEC Form 4 filings, Patrick O'brien has made a total of 6 transactions in Arrowhead Pharmaceuticals Inc (ARWR) over the past 5 years, including 0 buys and 6 sells. The most-recent trade in Arrowhead Pharmaceuticals Inc is the sale of 49,493 shares on January 5, 2026, which brought Patrick O'brien around $3 Million.
Insider Trading History of Patrick O'brien
* The information on this page (including Insider Trading Shares, Share Changes, Cost, etc.) is sourced exclusively from Form 4 filings and does not incorporate any data from 13F or 13D/G filings. As a result, it may differ from the values shown on the Guru page.
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Patrick O'brien Trading Performance
Patrick O'brien Ownership Network
Ownership Network List of Patrick O'brien
Ownership Network Relation of Patrick O'brien
Patrick O'brien Owned Company Details
What does Arrowhead Pharmaceuticals Inc do?
Who are the key executives at Arrowhead Pharmaceuticals Inc?
Patrick O'brien is the General Counsel of Arrowhead Pharmaceuticals Inc. Other key executives at Arrowhead Pharmaceuticals Inc include other: Senior Vice President James C Hamilton , Chief Financial Officer Daniel Joseph Apel , and director & President and CEO Christopher Richard Anzalone .
Arrowhead Pharmaceuticals Inc (ARWR) Insider Trades Summary
Over the past 18 months, Patrick O'brien made 1 insider transaction in Arrowhead Pharmaceuticals Inc (ARWR) with a net sale of 49,493. Other recent insider transactions involving Arrowhead Pharmaceuticals Inc (ARWR) include a net sale of 120,164 shares made by James C Hamilton , a net sale of 526,758 shares made by Christopher Richard Anzalone , and a net sale of 27,850 shares made by Michael S Perry .
In summary, during the past 3 months, insiders sold 13,600 shares of Arrowhead Pharmaceuticals Inc (ARWR) in total and bought 0 shares, with a net sale of 13,600 shares. During the past 18 months, 787,017 shares of Arrowhead Pharmaceuticals Inc (ARWR) were sold and 0 shares were bought by its insiders, resulting in a net sale of 787,017 shares.
Arrowhead Pharmaceuticals Inc (ARWR)'s detailed insider trading history can be found in Insider Trading Tracker table.
Arrowhead Pharmaceuticals Inc Insider Transactions
Patrick O'brien Mailing Address
Above is the net worth, insider trading, and ownership report for Patrick O'brien. Based on the public information released on the U.S. Securities and Exchange Commission (SEC) website, Patrick O'brien's mailing address is: Pasadena Ca 91101.
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