Arrowhead Pharmaceuticals, Inc. (ARWR) Insider Trading
Over the last 3 months, ARWR insiders made 0 open-market buys and 2 sales, a net sale of -$1.2M (SEC Form 4). Over the last 6 months, 323 institutions increased and 287 reduced their position (13F).
Insider Activity
Sentiment
0/100
Buys (3m)
0
Sells (3m)
2
Net (3m)
-$1.2M
Insider trades by month Buys Sells
Dec
Jan
Mar
Apr
May
Aug
Context3-month price +8.4%Institutions accumulating (13F)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| Aug 20, 2026 | OLUKOTUN ADEOYE Ydirector | Sell | 2,000 | $86.96 |
| Aug 20, 2026 | PERRY MICHAEL Sdirector | Sell | 11,600 | $87.30 |
| Jun 17, 2026 | Cohen Matthew Gregorydirector | Grant | 11,882 | — |
| May 14, 2026 | Lu Hongbodirector | Sell | 2,970 | $76.88 |
| Apr 24, 2026 | Apel Daniel Josephofficer: Chief Financial Officer | Sell | 8,730 | $71.92 |
| Apr 24, 2026 | Apel Daniel Josephofficer: Chief Financial Officer | Sell | 1,157 | $70.45 |
| Apr 24, 2026 | Hamilton James Cofficer: Chief Medical Officer | Sell | 10,000 | $75.00 |
| Apr 24, 2026 | Apel Daniel Josephofficer: Chief Financial Officer | Sell | 3,208 | $70.11 |
| Mar 9, 2026 | Hamilton James Cofficer: Chief Medical Officer | Sell | 10,000 | $64.19 |
| Jan 8, 2026 | O'Brien Patrickofficer: COO | Grant | 75,000 | — |
| Jan 8, 2026 | Hamilton James Cofficer: Chief Medical Officer | Grant | 75,000 | — |
| Jan 8, 2026 | Apel Daniel Josephofficer: Chief Financial Officer | Grant | 75,000 | — |
| Jan 5, 2026 | O'Brien Patrickofficer: COO | Sell | 5,873 | $62.91 |
| Jan 5, 2026 | O'Brien Patrickofficer: COO | Sell | 4,368 | $61.20 |
| Jan 5, 2026 | O'Brien Patrickofficer: COO | Sell | 600 | $61.12 |
| Jan 5, 2026 | Anzalone Christopher Richarddirector, officer: Chief Executive Officer | Sell | 5,771 | $66.39 |
| Jan 5, 2026 | Anzalone Christopher Richarddirector, officer: Chief Executive Officer | Sell | 7,416 | $65.88 |
| Jan 5, 2026 | Hamilton James Cofficer: Chief Medical Officer | Sell | 309 | $68.00 |
| Jan 5, 2026 | Hamilton James Cofficer: Chief Medical Officer | Sell | 1,200 | $64.49 |
| Jan 5, 2026 | Hamilton James Cofficer: Chief Medical Officer | Sell | 12,711 | $63.95 |
| Jan 5, 2026 | O'Brien Patrickofficer: COO | Sell | 900 | $66.01 |
| Jan 5, 2026 | O'Brien Patrickofficer: COO | Sell | 2,700 | $64.44 |
| Jan 5, 2026 | Hamilton James Cofficer: Chief Medical Officer | Sell | 14,792 | $63.01 |
| Jan 5, 2026 | O'Brien Patrickofficer: COO | Sell | 13,451 | $62.96 |
| Jan 5, 2026 | Hamilton James Cofficer: Chief Medical Officer | Sell | 437 | $65.97 |
| Jan 5, 2026 | O'Brien Patrickofficer: COO | Sell | 313 | $68.00 |
| Jan 5, 2026 | O'Brien Patrickofficer: COO | Sell | 46 | $68.00 |
| Jan 5, 2026 | O'Brien Patrickofficer: COO | Sell | 11,842 | $63.84 |
| Jan 5, 2026 | O'Brien Patrickofficer: COO | Sell | 6,164 | $62.23 |
| Jan 5, 2026 | Hamilton James Cofficer: Chief Medical Officer | Sell | 6,090 | $62.28 |
Source: ARWR SEC Form 4 filings, latest Aug 20, 2026. For informational purposes only — not investment advice.
Institutional activity (13F)
How institutions changed their ARWR positions over the last 6 months (SEC Form 13F).
Increased
323
New positions
232
Reduced
287
Sold out
58
Largest moves
| Institution | Action | Shares | Filed |
|---|---|---|---|
| BLACKROCK, INC. | Reduced | 18.2M | May 13, 2026 |
| BlackRock, Inc. | Reduced | 14.8M | Aug 7, 2026 |
| Avoro Capital Advisors LLC | Increased | 11.4M | Aug 14, 2026 |
| AVORO CAPITAL ADVISORS LLC | Reduced | 10.7M | May 15, 2026 |
| AVORO CAPITAL ADVISORS LLC | Reduced | 10.6M | Mar 16, 2026 |
| FMR LLC | Increased | 8.0M | Aug 13, 2026 |
| FMR LLC | Increased | 7.3M | May 15, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | New Position | 7.1M | May 8, 2026 |
| STATE STREET CORP | Increased | 6.5M | May 15, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Reduced | 6.4M | Aug 13, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | Increased | 6.1M | Aug 13, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 6.0M | May 15, 2026 |
| STATE STREET CORP | Reduced | 5.7M | Aug 7, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 4.3M | May 15, 2026 |
| NORGES BANK | New Position | 3.9M | Aug 12, 2026 |
Source: SEC Form 13F filings. For informational purposes only — not investment advice.