Company · Ownership research

Simulations Plus, Inc. SLP

CIK 0001023459

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 Oct 6, 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: $0.00
Sold: $19.63M

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

2023, from Nov 1, 20237 of 7 preview events

Date	Insider	Activity	Trade value (USD)	% of prior holding
Dec 22, 2023	DiBella John Anthony II Business Unit President	Sale10b5-1 footnote	$244.36K 5,411 shares sold	6.35% sold Direct holding	▾
Dec 5, 2023	WOLTOSZ WALTER S · WOLTOSZ VIRGINIA E Director · 10% owner	Sale10b5-1 footnote	$271.78K 7,050 shares sold	Unavailable Direct holding	▾
Dec 4, 2023	WOLTOSZ WALTER S · WOLTOSZ VIRGINIA E Director · 10% owner	Sale10b5-1 footnote	$843.08K 21,802 shares sold	Unavailable Direct holding	▾
Dec 1, 2023	WOLTOSZ WALTER S · WOLTOSZ VIRGINIA E Director · 10% owner	Sale10b5-1 footnote	$1.21M 31,148 shares sold	Unavailable Direct holding	▾
Nov 8, 2023	Paglia John Kenneth Director	Sale	$35.25K 1,000 shares sold	24.41% sold Direct holding	▾
Nov 2, 2023	WOLTOSZ WALTER S · WOLTOSZ VIRGINIA E Director · 10% owner	Sale10b5-1 footnote	$94.11K 2,720 shares sold	Unavailable Direct holding	▾
Nov 1, 2023	WOLTOSZ WALTER S · WOLTOSZ VIRGINIA E Director · 10% owner	Sale10b5-1 footnote	$1.97M 57,280 shares sold	Unavailable Direct holding	▾

Showing 7 / 7 record groups in 2023. The complete set is available through the API.

Simulations Plus, Inc. · SLP

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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 7 of 7 purchase / sale groups and 8 of 8 other groups; the totals and the monthly series cover the whole window.

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

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Sources, coverage & how to read this data

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.