Arrowhead Pharmaceuticals, Inc.
Could not find a ticker for this position, may be a filing error
A developer of RNA-interference medicines that silence disease-causing genes, Arrowhead's first FDA-approved drug, REDEMPLO, treats a rare condition called familial chylomicronemia syndrome by lowering triglycerides. The company began in 1989 as Arrowhead Research Corporation, a tech incubator that commercialized university patents, before pivoting to gene-silencing medicines after buying Roche's RNAi assets in 2011. Its name was chosen to symbolize a focused, forward-moving direction.
Convertible Senior Notes due 2032 (0%)
Granted 1.10M · Sold 1.07M
Granted 260.0K · Sold 119.9K
Granted 175.0K · Sold 101.3K
Granted 250.0K · Sold 205.3K
Granted 75.0K · Sold 28.0K
Granted 75.0K · Sold 13.1K
Granted 75.0K · Sold 9.5K
Granted 15.0K · Sold 8.5K
Granted 39.5K · Sold 16.3K
Granted 39.5K · Sold 19.4K
Granted 39.5K · Sold 19.8K
Granted 24.6K · Bought 5.4K · Sold 3.0K
Granted 46.2K
Granted 39.5K · Sold 27.1K
Granted 39.5K · Sold 13.8K
Granted 11.9K
| Insider | Stake change | Holds now | Granted / vested | Bought | Sold |
|---|---|---|---|---|---|
| Anzalone Christopher RichardChief Executive Officer, Director · 56 transactions | -0.3% | 3.80M | 1.10M | — | 1.07M |
| O'Brien PatrickCOO · 36 transactions | +12.3% | 472.8K | 260.0K | — | 119.9K |
| Myszkowski Kenneth AllenChief Financial Officer · 10 transactions | +21.9% | 465.4Kas of Jan 2025 | 175.0K | — | 101.3K |
| Hamilton James CChief Medical Officer · 29 transactions | +20.4% | 227.0K | 250.0K | — | 205.3K |
| San Martin JavierChief Medical Officer · 6 transactions | +36% | 206.0Kas of Jan 2024 | 75.0K | — | 28.0K |
| Apel Daniel JosephChief Financial Officer · 4 transactions | — | 172.8K | 75.0K | — | 13.1K |
| Oliver TracieChief Commercial Officer · 3 transactions | +106.4% | 127.1Kas of Jul 2024 | 75.0K | — | 9.5K |
| Given Douglas BDirector · 5 transactions | +5.6% | 124.2Kas of Dec 2024 | 15.0K | — | 8.5K |
| Perry Michael SDirector · 4 transactions | +2579.3% | 123.1K | 39.5K | — | 16.3K |
| Ferrari MauroDirector · 7 transactions | +1403.4% | 69.1K | 39.5K | — | 19.4K |
| Waddill William D.Director · 10 transactions | +1131.5% | 56.6K | 39.5K | — | 19.8K |
| Lu HongboDirector · 12 transactions | — | 52.0K | 24.6K | 5.4K | 3.0K |
| Ingram Douglas SDirector · 2 transactions | — | 46.2K | 46.2K | — | — |
| Vakiener VictoriaDirector · 11 transactions | +720.4% | 37.7K | 39.5K | — | 27.1K |
| Olukotun Adeoye YDirector · 8 transactions | +327.1% | 33.6K | 39.5K | — | 13.8K |
| Cohen Matthew GregoryDirector · 1 transaction | — | 0 | 11.9K | — | — |
Select a row to see that insider’s individual transactions. Sum of the holdings confirmed in the 12 months before this insider's last filing. A Form 4 reports a holding per line — held directly, or through a named trust, partnership or foundation, and in each share class separately — never a person’s total. Lines not restated in that time are left out and shown apart: an active filer restates what they still hold, so a line they did not restate is more often an entity since renamed, whose shares a successor line reports too. An amber marker means some were left out.
Net open-market activity over the last 3 years: -1.64M shares. Grants, option exercises and tax withholding are excluded — they are compensation mechanics, not decisions to buy or sell.