Company · Ownership research

PUMA BIOTECHNOLOGY, INC. PBYI

CIK 0001401667

Form 4 transactions dated Nov 1, 2023 to Nov 7, 2026, as reported to the SEC.

Insider trading Initial holdings Institutional holders

Insider filings on file run through Sep 16, 2026.

Insider purchases & sales

Purchased: $0.00
Sold: $4.04M

Nov 1, 2023 – Sep 16, 2026
Available records · partial months are marked ·

202610 of 16 preview events

Date	Insider	Activity	Trade value (USD)	% of prior holding
Sep 14, 2026	WILSON TROY EDWARD Director	Sale10b5-1 footnote	$45.50K 5,000 shares sold	8.37% sold Direct holding	▾
Sep 14, 2026	Cesano Alessandra Director	Sale10b5-1 footnote	$566.99K 62,150 shares sold	52.29% sold Direct holding	▾
Jul 6, 2026	AUERBACH ALAN H President and CEO · Director · 10% owner	Sale10b5-1 footnote	$364.05K 44,058 shares sold	0.60% sold Direct holding	▾
Jul 6, 2026	HUNT DOUGLAS M See Remarks	Sale10b5-1 footnote	$69.90K 8,460 shares sold	4.12% sold Direct holding	▾
Jul 6, 2026	NOUGUES MAXIMO F Chief Financial Officer	Sale10b5-1 footnote	$77.56K 9,386 shares sold	3.91% sold Direct holding	▾
Jun 12, 2026	WILSON TROY EDWARD Director	Sale10b5-1 footnote	$77.75K 10,800 shares sold	15.31% sold Direct holding	▾
Jun 12, 2026	Stuglik Brian M Director	Sale10b5-1 footnote	$58.31K 8,100 shares sold	6.64% sold Direct holding	▾
Jun 12, 2026	Senderowicz Adrian Director	Sale10b5-1 footnote	$194.31K 27,000 shares sold	50.00% sold Direct holding	▾
Jun 12, 2026	MOYES JAY M Director	Sale10b5-1 footnote	$158.80K 22,000 shares sold	27.39% sold Direct holding	▾
Jun 12, 2026	Dorval Allison Director	Sale10b5-1 footnote	$83.58K 11,610 shares sold	11.34% sold Direct holding	▾

Showing 16 / 16 record groups in 2026. The complete set is available through the API.

PUMA BIOTECHNOLOGY, INC. · PBYI

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The initial HTML of this page carries its exact data as script#research-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. For the year shown, this page lists 16 of 16 purchase / sale groups and 15 of 15 other groups; the totals and the monthly series cover the whole window.

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{"action":"list","ticker":"PBYI","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.