Company · Ownership research

Aktis Oncology, Inc. AKTS

CIK 0002035832

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

Insider trading Initial holdings Institutional holders

This page lists 30 of 45 rows; the complete set is available through the API.

Insider filings on file run through Sep 24, 2026.

Some filings are submitted jointly by several insiders. The SEC form does not apportion the reported figures between them, so results include every joint filer.

Insider purchases & sales

Purchased: $114.31M
Sold: $3.23M

Nov 1, 2023 – Sep 24, 2026
Available records · partial months are marked ·

Insiders in this window

202610 of 11 preview events

Date	Insider	Activity	Trade value (USD)	% of prior holding
Sep 23, 2026	Czibere Akos Chief Medical Officer	Sale10b5-1 footnote	$258.62K 12,500 shares sold	100.00% sold Direct holding	▾
Jul 20, 2026	Herrmann Ken Director	Sale	$119.27K 4,856 shares sold	100.00% sold Direct holding	▾
Jul 17, 2026	Herrmann Ken Director	Sale	$77.26K 3,065 shares sold	100.00% sold Direct holding	▾
Jul 8, 2026	Ron-Bigger Shulamit Chief Operating Officer	Sale	$1.39M 50,000 shares sold	100.00% sold Direct holding	▾
Jul 8, 2026	Czibere Akos Chief Medical Officer	Sale	$1.39M 50,000 shares sold	100.00% sold Direct holding	▾
Jan 12, 2026	Foley Todd Director · 10% owner	Purchase	$4.19M 232,870 shares bought	5.82% added Indirect holding	▾
Jan 12, 2026	EVNIN LUKE · MPM ONCOLOGY INNOVATIONS FUND LP · MPM BIOVENTURES 2018 (B), L.P. · MPM BIOVENTURES 2018, L.P. · MPM ASSET MANAGEMENT INVESTORS BV2018 LLC · MPM BioVentures 2018 GP LLC · MPM BioVentures 2018 LLC · MPM Oncology Innovations Fund GP LLC 10% owner	Purchase	$20.03M 1,112,777 shares bought	Unavailable Indirect holding	▾
Jan 12, 2026	GADICKE ANSBERT · MPM ASSET MANAGEMENT LLC · Oncology Impact Private Investment Fund 2, L.P. 10% owner	Purchase	$20.03M 1,112,777 shares bought	Unavailable Indirect holding	▾
Jan 12, 2026	Vida Ventures II, LLC · VIDA VENTURES II-A, LLC 10% owner	Purchase	$15.03M 835,000 shares bought	Unavailable Indirect holding	▾
Jan 12, 2026	Kim Helen Susan Director · 10% owner	Purchase	$15.03M 835,000 shares bought	Unavailable Indirect holding	▾

Showing 11 / 11 record groups in 2026. The complete set is available through the API.

Aktis Oncology, Inc. · AKTS

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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 11 of 11 purchase / sale groups and 30 of 45 other groups; the totals and the monthly series cover the whole window.

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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.