Company · Ownership research

Eton Pharmaceuticals, Inc. ETON

CIK 0001710340

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

Insider trading Initial holdings Institutional holders

This page lists 30 of 57 rows; the complete set is available through the API.

Insider filings on file run through Oct 6, 2026.

Insider purchases & sales

Purchased: $1.14M
Sold: $30.18M

Nov 1, 2023 – Oct 6, 2026
Available records · partial months are marked ·

202610 of 17 preview events

Date	Insider	Activity	Trade value (USD)	% of prior holding
Oct 6, 2026	Krempa David Chief Business Officer	Sale	$229.41K 4,166 shares sold	8.76% sold Direct holding	▾
Aug 28, 2026	MAIER PAUL V Director	Sale	$2.95M 50,000 shares sold	Unavailable Direct holding	▾
Aug 24, 2026	Krempa David Chief Business Officer	Sale	$1.63M 25,000 shares sold	40.31% sold Direct holding	▾
Aug 20, 2026	BRYNJELSEN SEAN President & CEO · Director	Sale	$5.53M 91,022 shares sold	8.65% sold Direct holding	▾
Aug 19, 2026	BRYNJELSEN SEAN President & CEO · Director	Sale	$562.47K 8,978 shares sold	0.85% sold Direct holding	▾
Jul 14, 2026	Opaleye Management Inc. 10% owner	Sale	$563.15K 15,000 shares sold	0.56% sold Indirect holding	▾
Jul 14, 2026	Opaleye Management Inc. 10% owner	Sale	$499.89K 13,315 shares sold	24.97% sold Indirect holding	▾
Jul 7, 2026	Opaleye Management Inc. 10% owner	Sale	$767.46K 20,000 shares sold	0.74% sold Indirect holding	▾
Jul 7, 2026	Opaleye Management Inc. 10% owner	Sale	$256.52K 6,685 shares sold	11.14% sold Indirect holding	▾
Jul 6, 2026	Opaleye Management Inc. 10% owner	Sale	$380.00K 10,000 shares sold	0.37% sold Indirect holding	▾

Showing 17 / 17 record groups in 2026. The complete set is available through the API.

Eton Pharmaceuticals, Inc. · ETON

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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 17 of 17 purchase / sale groups and 30 of 57 other groups; the totals and the monthly series cover the whole window.

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