Every Form 4 that Simulations Plus, Inc. (SLP) has filed with the SEC in the last 12 months is listed below, newest first, and each one links through to the document itself with the summary and the scores our analysis gives it.
A Form 4 covers the transactions officers, directors and large holders report, so if you follow SLP and want that one kind of document rather than the whole filing history, this is the page to keep. The company's other filings, of every form, are on the full SLP filings page.
Simulations Plus, Inc. reported that Chief Revenue Officer John Anthony DiBella II sold 1,000 shares of common stock on August 3, 2026 at $18.28 per share in an open-market or private transaction. The sale was effected automatically under a Rule 10b5-1 trading plan, and he now directly holds 85,140 shares.
Simulations Plus, Inc. Chief Revenue Officer John Anthony DiBella II reported an open-market sale of 1,000 shares of common stock on 2026-07-06 at an average price of $18.36 per share. Following the transaction, he directly holds 86,140 shares. The sale was executed automatically under a pre-established Rule 10b5-1 trading plan.
Simulations Plus, Inc. insiders Walter S. and Virginia E. Woltosz, both reported as ten percent owners (with Walter also a director), executed an automatic open-market sale of 4,177 shares of Common Stock on July 1, 2026 at an average price of $18.44 per share under a Rule 10b5-1 trading plan. Following this transaction, their reported direct holdings total 3,202,131 shares of Simulations Plus common stock. The filing also notes a correction removing 46,492 shares that had been inadvertently included in previously reported holdings.
Simulations Plus, Inc. executive Jill Fiedler-Kelly, President, Services Solutions, exercised employee stock options for 7,350 shares of common stock at $10.05 per share and sold the same 7,350 shares in an open-market transaction at $18.20 per share. The transactions were carried out automatically under a pre-arranged Rule 10b5-1 trading plan. Following these transactions, she holds 77,817 shares of Simulations Plus common stock directly.
Simulations Plus, Inc. executive Jill Fiedler-Kelly, President, Services Solutions, reported an option exercise and related share sale in company stock. She exercised employee stock options for 1,050 shares of common stock at $10.05 per share and then sold 1,050 shares in an open-market transaction at $16.51 per share.
The sale was executed automatically under a pre-arranged Rule 10b5-1 trading plan, indicating it was scheduled in advance rather than timed discretionarily. After these transactions, she directly holds 77,817 shares of Simulations Plus common stock and 7,350 stock options that remain outstanding.
Simulations Plus, Inc. Chief Revenue Officer John Anthony DiBella II reported an open-market sale of company stock. He sold 1,000 shares of common stock at $16.50 per share in a single transaction.
The trade was executed automatically under a pre-arranged Rule 10b5-1 trading plan adopted by the reporting person, indicating it was scheduled in advance rather than timed discretionarily. After the sale, he directly holds 87,140 shares of Simulations Plus common stock, so the transaction represents only a small fraction of his reported direct holdings.
Simulations Plus, Inc. major shareholders Walter S. and Virginia E. Woltsoz reported an open-market sale of 15,000 shares of Common Stock on 2026-06-01 at an average price of $17.43 per share. The sale was executed automatically under a pre-arranged Rule 10b5-1 trading plan adopted by the reporting persons. After the transaction, they collectively reported direct ownership of 3,252,800 shares of Simulations Plus Common Stock.
Simulations Plus, Inc. executive Jill Fiedler-Kelly, President, Services Solutions, reported an exercise-and-sale transaction in company stock. She exercised options to acquire 1,000 shares of common stock at $10.05 per share, then sold 1,000 shares in an open-market trade at $16.53 per share.
The sale was executed automatically under a pre-arranged Rule 10b5-1 trading plan. After these transactions, she holds 77,817 shares of common stock directly.
Simulations Plus, Inc. Chief Revenue Officer John Anthony DiBella II executed an open-market sale of 1,000 shares of common stock at $14.98 per share. The transaction was effected automatically under a pre-arranged Rule 10b5-1 trading plan. Following this sale, he directly holds 88,140 shares of Simulations Plus common stock.
Simulations Plus, Inc. directors and major shareholders Walter and Virginia WoltOSZ reported an open-market sale of 15,000 shares of common stock at an average price of $15.13 per share. After the sale, they directly held 3,267,800 shares. The transactions were executed automatically under a pre-arranged Rule 10b5-1 trading plan, and the shares were sold in multiple trades at prices ranging from $15.00 to $15.24.
Evans Sharlene reported acquisition or exercise transactions in this Form 4 filing.
Simulations Plus, Inc. director Sharlene Evans reported an equity grant of 2,117 shares of common stock on May 1, 2026. The shares were granted as independent director compensation under the company’s 2021 Equity Incentive Plan and increased her direct holdings to 17,173 shares.
WOLTOSZ WALTER S reported acquisition or exercise transactions in this Form 4 filing.
Simulations Plus, Inc. director and large shareholder Walter S. Woltsoz reported receiving a stock grant of 2,117 shares of common stock. The shares were awarded at no cash cost as independent director compensation under the company’s 2021 Equity Incentive Plan. Following this grant, he directly holds 3,282,800 shares.
WEINER DANIEL L reported acquisition or exercise transactions in this Form 4 filing.
Simulations Plus, Inc. director Daniel L. Weiner received a grant of 2,117 shares of common stock as independent director compensation, issued under the company’s 2021 Equity Incentive Plan. The award was at no cash cost per share and brings his direct holdings to 16,547 shares after the grant.
Paglia John Kenneth reported acquisition or exercise transactions in this Form 4 filing.
Simulations Plus, Inc. director John Kenneth Paglia received a stock grant of 2,117 shares of Common Stock as independent director compensation, issued under the company’s 2021 Equity Incentive Plan. Following this award, he directly holds a total of 14,589 shares.
Simulations Plus, Inc. Chief Revenue Officer John Anthony DiBella II reported an open-market sale of 1,000 shares of common stock at $13.37 per share on April 15, 2026. The transaction was executed automatically under a pre-arranged Rule 10b5-1 trading plan, and he now holds 89,140 shares directly.
Simulations Plus Chief Revenue Officer John Anthony DiBella II exercised fully vested stock options for 10,300 shares of common stock on February 6, 2026. The options were exercised at $9.71 per share, converting derivative securities into common stock.
Following this transaction, DiBella directly beneficially owns 90,140 shares of Simulations Plus common stock. The derivative position reported as stock options was reduced to zero as a result of the exercise.
Simulations Plus, Inc. insiders Walter S. Woltosz and Virginia E. Woltosz reported an equity award of common stock. On January 30, 2026, 1,776 shares of Simulations Plus common stock were granted at a price of $0 as independent director compensation under the company’s 2021 Equity Incentive Plan.
Following this grant, the reporting persons disclosed beneficial ownership of 3,280,683 shares of Simulations Plus common stock held directly.
Simulations Plus director Sharlene Evans received a stock grant as part of her board compensation. On 01/30/2026, she acquired 1,776 shares of Simulations Plus common stock at a price of $0 per share, issued under the company’s 2021 Equity Incentive Plan.
After this grant, Evans beneficially owned 15,056 shares of Simulations Plus common stock in total, held directly.
Simulations Plus director Daniel L. Weiner received a stock grant as part of his board compensation. On January 30, 2026, he was awarded 1,776 shares of common stock at a price of $0 per share, reflecting stock granted under the company’s 2021 Equity Incentive Plan. Following this grant, he beneficially owned 14,430 shares of Simulations Plus common stock, held directly.
Simulations Plus, Inc. disclosed that director John Kenneth Paglia received a grant of 1,776 shares of Common Stock on January 30, 2026. The shares were granted as independent director compensation under the company’s 2021 Equity Incentive Plan at a reported price of $0 per share.
Following this stock award, Paglia now beneficially owns 12,472 shares of Simulations Plus common stock in direct ownership form.
Simulations Plus, Inc. executive Jill Fiedler-Kelly exercised employee stock options and increased her direct shareholdings. On January 28, 2026, she exercised 8,950 fully vested employee stock options at an exercise price of $9.71 per share, receiving the same number of common shares.
Following this transaction, Fiedler-Kelly directly owned 77,817 shares of Simulations Plus common stock. The reported employee stock option position involved in this exercise was reduced to zero after the transaction, indicating the option grant was fully used.
Simulations Plus (SLP) reported a Form 4 showing Director Lisa LaVange received 1,771 shares of common stock on 11/03/2025 as independent director compensation under the company’s 2021 Equity Incentive Plan at a stated price of $0. Following this grant, she beneficially owns 10,834 shares, held directly.
Simulations Plus (SLP): insider stock grant reported. A joint Form 4 shows a director and 10% owner acquired 1,771 shares of common stock on 11/03/2025 at $0, recorded as an “A” code transaction. The filing cites stock granted as independent director compensation under the 2021 Equity Incentive Plan.
Following the grant, the reporting person’s beneficial ownership is 3,288,002 shares, held directly. The form was filed by more than one reporting person.
Simulations Plus (SLP) reported an insider equity grant. Director Daniel L. Weiner acquired 1,771 shares of common stock on 11/03/2025 as a stock grant under the company’s 2021 Equity Incentive Plan.
The reported transaction was coded as an acquisition at a grant price of $0, reflecting independent director compensation. Following the grant, Weiner beneficially owned 12,654 shares, held directly.
Simulations Plus, Inc. (SLP) reported an insider transaction on Form 4. Director John Kenneth Paglia acquired 1,771 shares of common stock on November 3, 2025, described as “stock granted as independent director compensation” under the company’s 2021 Equity Incentive Plan.
The filing lists a transaction price of $0 per share for the grant. After this award, Paglia beneficially owned 10,696 shares, held directly.
Simulations Plus (SLP) director Sharlene Evans reported an equity grant on Form 4. On 11/03/2025, she acquired 1,771 shares of common stock at $0 as independent director compensation under the company’s 2021 Equity Incentive Plan.
Following the grant, Evans beneficially owns 13,280 shares, held directly. This filing reflects routine director compensation rather than an open‑market purchase.
Simulations Plus (SLP) reported an insider equity grant: Chief Executive Officer Shawn O’Connor received 50,000 stock options to purchase common stock at an exercise price of $16.02 per share on 10/16/2025. The options expire on 10/15/2035 and were reported as a direct holding following the transaction.
The award vests over three years: 40% on the first anniversary, then 30% on each of the second and third anniversaries. The filing reflects a routine compensation grant under which the number of derivative securities beneficially owned after the transaction is 50,000.
Simulations Plus (SLP) reported an insider equity grant: its EVP/CFO received 32,500 stock options at an exercise price of $16.02 on 10/16/2025.
The options expire on 10/15/2035 and vest in four equal annual installments, with one fourth vesting on each anniversary of the grant date. Following this grant, the reporting person holds 32,500 derivative securities directly.
Simulations Plus (SLP) officer Jill Fiedler‑Kelly, President, Services Solutions, reported a grant of 27,500 stock options on 10/16/2025 with an exercise price of $16.02 per share.
The options vest in four equal annual installments on each anniversary of the grant date and expire on 10/15/2035. Following the transaction, 27,500 derivative securities were beneficially owned directly.
Simulations Plus, Inc. (SLP) reported an insider equity award. A Form 4 discloses that Chief Revenue Officer John Anthony DiBella received stock options to purchase 27,500 shares at an exercise price of $16.02 on 10/16/2025.
The options expire on 10/15/2035 and vest in four equal annual installments, with one-fourth vesting on each anniversary of the grant date. Following the reported transaction, 27,500 derivative securities are beneficially owned directly.