Updated Jul 16, 2026 · Last SEC filing 2026-07-06
DYADIC INTERNATIONAL INC (DYAI) has filed 1 SEC Form 4 insider transactions in the last 90 days, with the most recent on 2026-07-06. 5 Form 8-K material event filings were reported by DYAI in the last 90 days. InsiderAlpha tracks every DYAI SEC filing — Form 4, Form 144, and 8-K — in real time, including Rule 10b5-1 plan detection.
| SEC CIK | 0001213809 |
|---|
| Form 4 filings (90d) | 1 |
|---|---|
| Form 8-K filings (90d) | 5 |
| Latest Form 4 filing | 2026-07-06 |
| Date | Insider | Role | Transaction | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| Rawson Ping Wang | Chief Financial Officer | A — Grant or award | 29.2K | $0.00 | — | SEC | |
| Hazelton Joseph P | President & COO | A — Grant or award | 36.4K | $0.00 | — | SEC | |
| Kaye Jack | Director | M — Option exercise | 21.6K | — | — | SEC | |
| HERBST SETH | Director | M — Option exercise | 21.6K | — | — | SEC | |
| EMALFARB MARK A | CEO | A — Grant or award | 102.6K | $0.00 | — | SEC | |
| Lucy Patrick K. | Director | M — Option exercise | 21.6K | — | — | SEC | |
| TCHELET RONEN | VP of Research and Bus. Dvlpmt | A — Grant or award | 18.1K | $0.00 | — | SEC | |
| Hazelton Joseph P | President and COO | P — Open-market purchase | 26.0K | $0.95 | $25K | SEC | |
| Bose Arindam | Director | M — Option exercise | 10.8K | — | — | SEC | |
| Tarnok Michael P. | Director | M — Option exercise | 10.8K | — | — | SEC | |
| Francisco Trust under agreement dated February 28, 1996 | 10% Owner | S — Open-market sale | 15.0K | $2.01 | $30K | SEC | |
| Francisco Trust under agreement dated February 28, 1996 | 10% Owner | S — Open-market sale | 20.0K | $1.92 | $38K | SEC | |
| Francisco Trust under agreement dated February 28, 1996 | 10% Owner | S — Open-market sale | 40.0K | $1.98 | $79K | SEC | |
| Francisco Trust under agreement dated February 28, 1996 | 10% Owner | S — Open-market sale | 5.1K | $1.80 | $9K | SEC | |
| Francisco Trust under agreement dated February 28, 1996 | 10% Owner | S — Open-market sale | 41.1K | $1.84 | $76K | SEC |
All transactions sourced from SEC EDGAR Form 4 filings for DYADIC INTERNATIONAL INC (DYAI). Updated in real time as new filings are submitted to the SEC.
| Insider | Form 4 filings | Total transaction value |
|---|---|---|
| Francisco Trust under agreement dated February 28, 1996 | 10 | $344K |
SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in DYAI insider filings:
| P | Open-market purchase by the insider |
|---|---|
| S | Open-market sale by the insider |
| A | Grant, award, or other acquisition from the issuer |
| M | Exercise or conversion of derivative security (e.g. options) |
| F | Payment of exercise price or tax liability via share withholding |
| G | Bona-fide gift of securities |
| D | Disposition to the issuer (e.g. share buyback participation) |
| J | Other acquisition or disposition |
| X | Exercise of in-the-money or at-the-money derivative security |
| C | Conversion of derivative security |
| V | Transaction voluntarily reported earlier than required |
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