Company · Ownership research

ARROWHEAD PHARMACEUTICALS, INC. ARWR

CIK 0000879407

Form 4 transactions dated Nov 1, 2023 to Nov 9, 2026, as reported to the SEC.

Insider trading Initial holdings Institutional holders

Insider filings on file run through Aug 20, 2026.

Insider purchases & sales

Purchased: $82.99K
Sold: $59.65M

Nov 1, 2023 – Aug 20, 2026
Available records · partial months are marked ·

202510 of 30 preview events

Date	Insider	Activity	Trade value (USD)	% of prior holding
Dec 29, 2025	Anzalone Christopher Richard Chief Executive Officer · Director	Sale10b5-1 footnote	$3.58M 51,726 shares sold	1.34% sold Direct holding	▾
Dec 26, 2025	Ferrari Mauro Director	Sale10b5-1 footnote	$527.10K 7,530 shares sold	9.83% sold Direct holding	▾
Dec 22, 2025	Anzalone Christopher Richard Chief Executive Officer · Director	Sale10b5-1 footnote	$861.34K 12,586 shares sold	0.33% sold Direct holding	▾
Dec 19, 2025	Vakiener Victoria Director	Sale10b5-1 footnote	$679.49K 10,040 shares sold	21.94% sold Direct holding	▾
Dec 19, 2025	Waddill William D. Director	Sale10b5-1 footnote	$566.04K 8,367 shares sold	12.89% sold Direct holding	▾
Dec 19, 2025	Anzalone Christopher Richard Chief Executive Officer · Director	Sale10b5-1 footnote	$909.68K 13,445 shares sold	0.35% sold Direct holding	▾
Dec 19, 2025	OLUKOTUN ADEOYE Y Director	Sale10b5-1 footnote	$676.62K 10,000 shares sold	22.94% sold Direct holding	▾
Dec 17, 2025	Anzalone Christopher Richard Chief Executive Officer · Director	Sale	$5.44M 85,000 shares sold	2.17% sold Direct holding	▾
Dec 16, 2025	Anzalone Christopher Richard Chief Executive Officer · Director	Sale	$3.40M 54,298 shares sold	1.37% sold Direct holding	▾
Dec 15, 2025	Anzalone Christopher Richard Chief Executive Officer · Director	Sale	$8.95M 130,000 shares sold	3.17% sold Direct holding	▾

Showing 30 / 30 record groups in 2025. The complete set is available through the API.

ARROWHEAD PHARMACEUTICALS, INC. · ARWR

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{"action":"list","ticker":"ARWR","transaction_code":["P","S"],"transaction_form_type":"4","page_size":20}

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Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.

Non-cancelled, non-derivative purchase (P) and sale (S) rows dated inside the public window, as reported. Share totals are on today's split-adjusted basis. Includes open-market and private transactions. Data after the latest filing is not asserted complete and is not zero-filled. A grouped event shares filing, transaction date, security, code, direction, ownership bucket and source. Derivative groups also match underlying security, exercise price, exercise/expiration dates and footnote references. Reported rows are retained; P/S price lots can be grouped. Post-transaction balances are never summed.