Every Form 4 that Dyadic Intl Inc Del (DYAI) 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 DYAI 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 DYAI filings page.
Dyadic International Inc reported that Francisco Trust under agreement dated February 28, 1996, a ten percent owner, sold a total of 95392 shares of common stock in three open market or private transactions on 2026-07-22, 2026-07-23 and 2026-07-24 at prices between $1.2131 and $1.3279 per share.
DYADIC INTERNATIONAL INC reported insider activity by the Francisco Trust under agreement dated February 28, 1996, a ten percent owner. The trust received an 8.0% senior secured convertible promissory note initially convertible into 558,659 common shares at $1.79 per share, later amended to allow conversion into a total of 952,381 shares through lower conversion prices of $1.40 and $1.05 per share. Over multiple dates from June 2024 through January 2025, the trust also completed open-market sales totaling 172,864 common shares at prices between $1.80 and $2.43 per share, and reported direct ownership of 3,375,664 common shares after the most recent sale.
Dyadic International CFO Rawson Ping Wang reported equity compensation on Form 4. On January 2, 2026, Wang acquired 29,158 shares of common stock at $0, representing stock issued upon vesting of RSUs granted as a key employee annual bonus in lieu of a cash bonus earned for the year ended 2025. These RSUs vested in full upon grant, bringing Wang’s directly held common stock to 170,151 shares after the transaction.
On the same date, Wang also received an annual grant of 47,250 stock options with an exercise price of $0.94 per share. This option expires on January 2, 2036 and vests in four equal installments beginning on the first anniversary of the grant date, contingent on continued service to Dyadic International.
Dyadic International director Jack Kaye reported several equity transactions on January 2, 2026. He exercised 21,552 restricted stock units, receiving the same number of common shares at $0 per share, bringing his directly held common stock to 81,201 shares. The exercised units came from awards that vested after one year of board service and were settled fully in common stock.
On the same date, Kaye received an annual grant of 67,500 stock options with a $0.94 exercise price, exercisable starting January 2, 2027 and expiring January 2, 2036. He also received an annual grant of 39,894 restricted stock units, each representing a right to one share of common stock, scheduled to be settled entirely in shares when they vest, subject to continued board service.
Dyadic International director Seth Herbst reported equity compensation changes. On January 2, 2026, 21,552 restricted stock units were converted into the same number of shares of Dyadic common stock at a price of $0 per share, increasing his directly held common stock to 202,311 shares.
On the same date, Herbst received an annual grant of 50,000 stock options with an exercise price of $0.94 per share, exercisable from January 2, 2027 until January 2, 2036. He was also granted 39,894 restricted stock units, which the disclosure explains will be settled 100% in Dyadic common stock when they vest on the first anniversary of the grant date, subject to his continued service on the board.
Mark A. Emalfarb, who is listed as CEO, a director and a >10% owner of Dyadic International, purchased a $1,000,000 principal Senior Secured Convertible Promissory Note of Dyadic International on 09/15/2025. The note accrues interest at 8% per annum payable quarterly and matures on March 8, 2027 unless earlier converted, repurchased, or redeemed.
The note is convertible at $1.40 per share, representing 714,286 underlying common shares if converted in full. The reported ownership is held indirectly through the Mark A Emalfarb Trust U/A/ DTD 10/1/1987. The Form 4 was signed by an attorney-in-fact on behalf of the reporting person on 09/17/2025.