Arrowhead Pharmaceuticals (NASDAQ: ARWR) insider transactions
In the twelve months to 10 November 2026, executives and directors of Arrowhead Pharmaceuticals reported 64 open-market sales of 560,501 shares ($37.3m) and 0 open-market purchases, by 10 people, according to the Form 4 filings they submitted to the SEC.
Latest transactions
| Date | Insider | Role | Transaction | Shares | Price | Held after | Filing |
|---|---|---|---|---|---|---|---|
| 18 August 2026 | Olukotun Adeoye Y | Director | Open-market sale | −2,000 | $86.96 | 31,600 | Form 4 |
| 18 August 2026 | Perry Michael S | Director | Open-market sale | −11,600 | $87.30 | 111,459 | Form 4 |
| 15 June 2026 | Cohen Matthew Gregory | Director | Grant or award | +11,882 | — | 11,882 | Form 4 |
| 12 May 2026 | Lu Hongbo | Director | Open-market sale, 10b5-1 plan | −2,970 | $76.88 | 52,012 | Form 4 |
| 23 April 2026 | Hamilton James C | Chief Medical Officer | Open-market sale, 10b5-1 plan | −10,000 | $75.00 | 226,958 | Form 4 |
| 22 April 2026 | Apel Daniel Joseph | Chief Financial Officer | Open-market sale, 10b5-1 plan | −3,208 | $70.11 | 172,792 | Form 4 |
| 22 April 2026 | Apel Daniel Joseph | Chief Financial Officer | Open-market sale, 10b5-1 plan | −1,157 | $70.45 | 171,635 | Form 4 |
| 22 April 2026 | Apel Daniel Joseph | Chief Financial Officer | Open-market sale, 10b5-1 plan | −8,730 | $71.92 | 162,905 | Form 4 |
| 5 March 2026 | Hamilton James C | Chief Medical Officer | Open-market sale, 10b5-1 plan | −10,000 | $64.19 | 236,958 | Form 4 |
| 6 January 2026 | O'Brien Patrick | COO | Gift | −540 | — | 474,368 | Form 4 |
| 6 January 2026 | O'Brien Patrick | COO | Gift | −540 | — | 473,828 | Form 4 |
| 6 January 2026 | O'Brien Patrick | COO | Gift | −540 | — | 473,288 | Form 4 |
| 6 January 2026 | O'Brien Patrick | COO | Gift | −440 | — | 472,848 | Form 4 |
| 6 January 2026 | O'Brien Patrick | COO | Gift | −440 | — | 472,408 | Form 4 |
| 6 January 2026 | O'Brien Patrick | COO | Grant or award | +75,000 | — | 547,408 | Form 4 |
| 6 January 2026 | Hamilton James C | Chief Medical Officer | Grant or award | +75,000 | — | 246,958 | Form 4 |
| 6 January 2026 | Apel Daniel Joseph | Chief Financial Officer | Grant or award | +75,000 | — | 176,200 | Form 4 |
| 5 January 2026 | O'Brien Patrick | COO | Open-market sale, 10b5-1 plan | −4,368 | $61.20 | 520,033 | Form 4 |
| 5 January 2026 | O'Brien Patrick | COO | Open-market sale, 10b5-1 plan | −6,164 | $62.23 | 513,869 | Form 4 |
| 5 January 2026 | O'Brien Patrick | COO | Open-market sale, 10b5-1 plan | −13,451 | $62.96 | 500,418 | Form 4 |
Names appear as in the filing, surname first. A dash in the price column means the filing reports none, as in grants and gifts.
How to read the table
Only open-market purchases and sales are trades the insider chose to make at the market price, and they are the ones counted in the summary above. Grants, option exercises and shares withheld for tax come from pay plans. A sale marked as a 10b5-1 plan was scheduled in advance under a written plan.
Where each row comes from
From the Form 4 that each executive, director or large shareholder must file with the SEC within two business days of a transaction, read up to 10 November 2026. Each row links to its filing on EDGAR. Only transactions in shares are listed, not derivatives, and amended filings are left out. The accounts of the company are on the Arrowhead Pharmaceuticals page; the method, in data sources.
Information prepared from the Form 4 filings submitted to the SEC, for information purposes only. It is not financial advice or a recommendation to buy or sell. Updated on 12 November 2026.