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Dyadic International Inc. (DYAI)

Dyadic International Inc. (DYAI) Insider Trading

Directors, officers and holders of more than 10% of DYAI report their trades in its stock on SEC Form 4, within two business days. Each row below is one Form 4 transaction line. The one-letter code says what kind of transaction it was: only P (purchase) and S (sale) are open-market or private trades; awards, option exercises, tax withholding and gifts carry other codes.

Recent Form 4 transactions

The 50 most recent of 84 transactions on file: 2 with code P, 5 with code S and 43 with other codes.

DateInsiderCodeShares
Jul 24, 2026Francisco Trust under agreement dated February 28, 1996S Sale2,616
Jul 23, 2026Francisco Trust under agreement dated February 28, 1996S Sale54,760
Jul 22, 2026Francisco Trust under agreement dated February 28, 1996S Sale38,016
Jan 2, 2026Lucy Patrick K.M Exercise21,552
Jan 2, 2026EMALFARB MARK AA Award102,609
Jan 2, 2026Lucy Patrick K.M Exercise21,552
Jan 2, 2026Lucy Patrick K.A Award67,500
Jan 2, 2026Kaye JackA Award67,500
Jan 2, 2026Kaye JackM Exercise21,552
Jan 2, 2026Rawson Ping WangA Award47,250
Jan 2, 2026TCHELET RONENA Award47,250
Jan 2, 2026EMALFARB MARK AA Award126,000
Jan 2, 2026Lucy Patrick K.A Award39,894
Jan 2, 2026TCHELET RONENA Award18,064
Jan 2, 2026Rawson Ping WangA Award29,158
Jan 2, 2026Kaye JackM Exercise21,552
Jan 2, 2026HERBST SETHM Exercise21,552
Jan 2, 2026Hazelton Joseph PA Award36,418
Jan 2, 2026Hazelton Joseph PA Award67,250
Jan 2, 2026HERBST SETHA Award39,894
Jan 2, 2026HERBST SETHA Award50,000
Jan 2, 2026HERBST SETHM Exercise21,552
Jan 2, 2026Kaye JackA Award39,894
Dec 23, 2025Francisco Trust under agreement dated February 28, 1996J Other238,095
Dec 23, 2025EMALFARB MARK AD Disposition0
Dec 23, 2025EMALFARB MARK AA Award0
Sep 15, 2025EMALFARB MARK AP Purchase0
Aug 1, 2025Hazelton Joseph PP Purchase26,000
Jun 20, 2025Bose ArindamD Disposition10,776
Jun 20, 2025Tarnok Michael P.M Exercise10,776
Jun 20, 2025Bose ArindamM Exercise10,776
Jun 20, 2025Tarnok Michael P.M Exercise10,776
Jun 20, 2025Bose ArindamM Exercise10,776
May 30, 2025Hazelton Joseph PA Award25,000
Mar 5, 2025Kaye JackM Exercise22,500
Mar 5, 2025Kaye JackM Exercise7,500
Mar 5, 2025Kaye JackM Exercise22,500
Mar 5, 2025Kaye JackF Tax Payment27,517
Mar 5, 2025Kaye JackM Exercise7,500
Jan 7, 2025Francisco Trust under agreement dated February 28, 1996S Sale15,000
Jan 6, 2025Francisco Trust under agreement dated February 28, 1996S Sale20,000
Jan 6, 2025HERBST SETHM Exercise18,750
Jan 6, 2025HERBST SETHM Exercise6,250
Jan 2, 2025Lucy Patrick K.M Exercise23,585
Jan 2, 2025HERBST SETHM Exercise23,585
Jan 2, 2025EMALFARB MARK AA Award73,111
Jan 2, 2025Hazelton Joseph PA Award30,172
Jan 2, 2025Bose ArindamM Exercise23,585
Jan 2, 2025Rawson Ping WangA Award20,776
Jan 2, 2025Lucy Patrick K.M Exercise23,585

The full Form 4 history is on the DYAI company page (Insider Trades card, View all).

Questions about this data

Which insider transactions are open-market trades?

Code P (open market or private purchase) and code S (open market or private sale). Code F is shares withheld to pay tax on vesting stock, A is an award from the company, M and X are option exercises and G is a gift. None of those is the insider choosing to buy or sell in the market.

How quickly are insider trades reported?

A Form 4 is due before the end of the second business day after the trade. The date shown is the transaction date from the form.

Who has to file Form 4?

Officers, directors and beneficial owners of more than 10% of a class of the company’s registered equity, under Section 16 of the Securities Exchange Act.

Look up any code in the Form 4 transaction code reference, or read Form 4 codes explained.