DYAI insider transaction filings
DYADIC INTERNATIONAL INC — 46 most recent Form 4 filings from SEC EDGAR, normalized by FilingPulse. Latest filing: 2026-07-24. Screen DYAI transaction legs live →
Insider transaction summary — last 90 days
2026-06-24 to 2026-09-22, from the filings listed below: 2 Form 4 filings. Counts and totals are arithmetic on values as filed — descriptive data, not a recommendation.
- Open-market purchases (code P, non-derivative): none reported.
- Open-market sales (code S, non-derivative): 10 legs across 2 filings by 1 insider — 268,256 shares, $468,721 total (shares × price as filed).
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 3.
- Largest priced transaction: sale of 40,000 shares @ $1.98 ($79,072) by Francisco Trust under agreement dated February 28, 1996, filed 2026-07-06.
By insider — same window
Open-market purchase/sale legs on non-derivative securities, grouped by the filing's reporting owner(s); joint filings appear once. Dollar totals cover priced legs only (shares × price as filed). Ordered by priced transaction value, largest first.
| Insider | Filings | Purchases (P) | Sales (S) | Other legs |
|---|---|---|---|---|
| Francisco Trust under agreement dated February 28, 1996 — 10% owner | 2 | — | 10 legs · 268,256 sh · $468,721 | 3 |
Recent Form 4 filings — DYADIC INTERNATIONAL INC
| Filed | Form | Insider | Reported transactions | Source |
|---|---|---|---|---|
| 2026-07-24 | 4 | Francisco Trust under agreement dated February 28, 1996 — 10% owner | Sale (S): 38,016 @ $1.33 · Sale (S): 54,760 @ $1.30 · Sale (S): 2,616 @ $1.21 | EDGAR |
| 2026-07-06 | 4 | Francisco Trust under agreement dated February 28, 1996 — 10% owner | Sale (S): 26,340 @ $2.43 · Sale (S): 25,281 @ $1.87 · Sale (S): 41,143 @ $1.84 · Sale (S): 5,100 @ $1.80 · Sale (S): 40,000 @ $1.98 · Sale (S): 20,000 @ $1.92 · +4 more | EDGAR |
| 2026-01-06 | 4 | TCHELET RONEN — VP of Research and Bus. Dvlpmt | Grant/award (A): 18,064 @ $0 · Grant/award (A): 47,250 (derivative) @ $0 | EDGAR |
| 2026-01-06 | 4 | Rawson Ping Wang — Chief Financial Officer | Grant/award (A): 29,158 @ $0 · Grant/award (A): 47,250 (derivative) @ $0 | EDGAR |
| 2026-01-06 | 4 | Lucy Patrick K. — Director | Option exercise (M): 21,552 · Option exercise (M): 21,552 (derivative) @ $0 · Grant/award (A): 67,500 (derivative) @ $0 · Grant/award (A): 39,894 (derivative) @ $0 | EDGAR |
| 2026-01-06 | 4 | Kaye Jack — Director | Option exercise (M): 21,552 · Option exercise (M): 21,552 (derivative) @ $0 · Grant/award (A): 67,500 (derivative) @ $0 · Grant/award (A): 39,894 (derivative) @ $0 | EDGAR |
| 2026-01-06 | 4 | HERBST SETH — Director | Option exercise (M): 21,552 · Option exercise (M): 21,552 (derivative) @ $0 · Grant/award (A): 50,000 (derivative) @ $0 · Grant/award (A): 39,894 (derivative) @ $0 | EDGAR |
| 2026-01-06 | 4 | Hazelton Joseph P — President & COO | Grant/award (A): 36,418 @ $0 · Grant/award (A): 67,250 (derivative) @ $0 | EDGAR |
| 2026-01-06 | 4 | EMALFARB MARK A — CEO, Director, 10% owner | Grant/award (A): 102,609 @ $0 · Grant/award (A): 126,000 (derivative) @ $0 | EDGAR |
| 2025-12-29 | 4 | EMALFARB MARK A — CEO, Director, 10% owner | Disposition to issuer (D) · Grant/award (A) | EDGAR |
| 2025-09-17 | 4 | EMALFARB MARK A — CEO, Director, 10% owner | Purchase (P) @ $1,000,000 | EDGAR |
| 2025-08-05 | 4 | Hazelton Joseph P — President and COO | Purchase (P): 26,000 @ $0.95 | EDGAR |
| 2025-06-24 | 4 | Tarnok Michael P. — Director | Option exercise (M): 10,776 · Option exercise (M): 10,776 (derivative) @ $0 | EDGAR |
| 2025-06-24 | 4 | Bose Arindam — Director | Option exercise (M): 10,776 · Option exercise (M): 10,776 (derivative) @ $0 · Disposition to issuer (D): 10,776 (derivative) @ $0 | EDGAR |
| 2025-06-06 | 4 | Hazelton Joseph P — President and COO | Grant/award (A): 25,000 (derivative) @ $0 | EDGAR |
| 2025-03-07 | 4 | Kaye Jack — Director | Option exercise (M): 7,500 @ $1.33 · Option exercise (M): 22,500 @ $1.33 · Tax withholding (F): 27,517 @ $1.45 · Option exercise (M): 7,500 (derivative) @ $0 · Option exercise (M): 22,500 (derivative) @ $0 | EDGAR |
| 2025-01-08 | 4 | HERBST SETH — Director | Option exercise (M): 18,750 @ $0.97 · Option exercise (M): 6,250 @ $0.97 · Option exercise (M): 18,750 (derivative) @ $0 · Option exercise (M): 6,250 (derivative) @ $0 | EDGAR |
| 2025-01-07 | 4 | TCHELET RONEN — VP of Research and Bus. Dvlpmt | Grant/award (A): 8,980 @ $0 · Grant/award (A): 45,000 (derivative) @ $0 | EDGAR |
| 2025-01-07 | 4 | Kaye Jack — Director | Option exercise (M): 23,585 · Option exercise (M): 23,585 (derivative) @ $0 · Grant/award (A): 67,500 (derivative) @ $0 · Grant/award (A): 21,552 (derivative) @ $0 | EDGAR |
| 2025-01-07 | 4 | Tarnok Michael P. — Director | Option exercise (M): 23,585 · Option exercise (M): 23,585 (derivative) @ $0 · Grant/award (A): 25,000 (derivative) @ $0 · Grant/award (A): 10,776 (derivative) @ $0 | EDGAR |
| 2025-01-07 | 4 | HERBST SETH — Director | Option exercise (M): 23,585 · Option exercise (M): 23,585 (derivative) @ $0 · Grant/award (A): 50,000 (derivative) @ $0 · Grant/award (A): 21,552 (derivative) @ $0 | EDGAR |
| 2025-01-07 | 4 | Lucy Patrick K. — Director | Option exercise (M): 23,585 · Option exercise (M): 23,585 (derivative) @ $0 · Grant/award (A): 67,500 (derivative) @ $0 · Grant/award (A): 21,552 (derivative) @ $0 | EDGAR |
| 2025-01-07 | 4 | Rawson Ping Wang — Chief Financial Officer | Grant/award (A): 20,776 @ $0 · Grant/award (A): 64,500 (derivative) @ $0 | EDGAR |
| 2025-01-07 | 4 | Bose Arindam — Director | Option exercise (M): 23,585 · Option exercise (M): 23,585 (derivative) @ $0 · Grant/award (A): 67,500 (derivative) @ $0 · Grant/award (A): 21,552 (derivative) @ $0 | EDGAR |
| 2025-01-07 | 4 | Hazelton Joseph P — Chief Operating Officer | Grant/award (A): 30,172 @ $0 · Grant/award (A): 75,000 (derivative) @ $0 | EDGAR |
| 2025-01-07 | 4 | EMALFARB MARK A — President and CEO, Director, 10% owner | Grant/award (A): 73,111 @ $0 · Grant/award (A): 172,000 (derivative) @ $0 | EDGAR |
| 2024-11-25 | 4 | Tarnok Michael P. — Director | Option exercise (M): 6,250 @ $0.97 · Option exercise (M): 18,750 @ $0.97 · Option exercise (M): 6,250 (derivative) @ $0 · Option exercise (M): 18,750 (derivative) @ $0 | EDGAR |
| 2024-06-13 | 4 | Buckland Barry — Director | Option exercise (M): 11,793 @ $1.59 · Option exercise (M): 11,793 (derivative) @ $0 · Disposition to issuer (D): 11,792 (derivative) @ $0 | EDGAR |
| 2024-05-23 | 4 | Tarnok Michael P. — Director | Option exercise (M): 7,500 @ $1.36 · Option exercise (M): 5,625 @ $1.36 · Option exercise (M): 16,875 @ $1.36 · Tax withholding (F): 24,431 @ $1.67 · Option exercise (M): 7,500 (derivative) @ $0 · Option exercise (M): 5,625 (derivative) @ $0 · +1 more | EDGAR |
| 2024-04-15 | 4 | TCHELET RONEN — VP of Research and Bus. Dvlpmt | Grant/award (A): 11,169 @ $0 | EDGAR |
| 2024-04-15 | 4 | Lucy Patrick K. — Director | Grant/award (A): 13,125 (derivative) @ $0 | EDGAR |
| 2024-04-15 | 4 | Tarnok Michael P. — Director | Disposition to issuer (D): 13,125 (derivative) | EDGAR |
| 2024-04-15 | 4 | Hazelton Joseph P — Chief Business Officer | Grant/award (A): 20,000 (derivative) @ $0 | EDGAR |
| 2024-04-15 | 4 | Hazelton Joseph P — Chief Business Officer | Grant/award (A): 41,720 @ $0 | EDGAR |
| 2024-04-15 | 4 | EMALFARB MARK A — President and CEO, Director, 10% owner | Grant/award (A): 124,454 @ $0 | EDGAR |
| 2024-04-15 | 4 | Rawson Ping Wang — Chief Financial Officer | Grant/award (A): 35,366 @ $0 | EDGAR |
| 2024-01-04 | 4 | Bose Arindam — Director | Option exercise (M): 27,174 · Grant/award (A): 67,500 (derivative) @ $0 · Grant/award (A): 23,585 (derivative) @ $0 · Option exercise (M): 27,174 (derivative) @ $0 | EDGAR |
| 2024-01-04 | 4 | EMALFARB MARK A — President and CEO, Director, 10% owner | Grant/award (A): 200,000 (derivative) @ $0 | EDGAR |
| 2024-01-04 | 4 | Hazelton Joseph P — Chief Business Officer | Grant/award (A): 75,000 (derivative) @ $0 | EDGAR |
| 2024-01-04 | 4 | Rawson Ping Wang — Chief Financial Officer | Grant/award (A): 75,000 (derivative) @ $0 | EDGAR |
| 2024-01-04 | 4 | TCHELET RONEN — VP of Research and Bus. Dvlpmt | Grant/award (A): 37,500 (derivative) @ $0 | EDGAR |
| 2024-01-04 | 4 | Lucy Patrick K. — Director | Option exercise (M): 27,174 · Grant/award (A): 50,000 (derivative) @ $0 · Grant/award (A): 23,585 (derivative) @ $0 · Option exercise (M): 27,174 (derivative) @ $0 | EDGAR |
| 2024-01-04 | 4 | Buckland Barry — Director | Option exercise (M): 27,174 · Grant/award (A): 50,000 (derivative) @ $0 · Grant/award (A): 23,585 (derivative) @ $0 · Option exercise (M): 27,174 (derivative) @ $0 | EDGAR |
| 2024-01-04 | 4 | HERBST SETH — Director | Option exercise (M): 27,174 · Grant/award (A): 50,000 (derivative) @ $0 · Grant/award (A): 23,585 (derivative) @ $0 · Option exercise (M): 27,174 (derivative) @ $0 | EDGAR |
| 2024-01-04 | 4 | Tarnok Michael P. — Director | Option exercise (M): 27,174 · Grant/award (A): 67,500 (derivative) @ $0 · Grant/award (A): 23,585 (derivative) @ $0 · Option exercise (M): 27,174 (derivative) @ $0 | EDGAR |
| 2024-01-04 | 4 | Kaye Jack — Director | Option exercise (M): 27,174 · Grant/award (A): 67,500 (derivative) @ $0 · Grant/award (A): 23,585 (derivative) @ $0 · Option exercise (M): 27,174 (derivative) @ $0 | EDGAR |
Recent 8-K events — DYADIC INTERNATIONAL INC
| Filed | Form | Items reported | Source |
|---|---|---|---|
| 2026-08-14 | 8-K | 1.01 — Entry into a Material Definitive Agreement 3.02 — Unregistered Sales of Equity Securities 8.01 — Other Events 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-08-12 | 8-K | 2.02 — Results of Operations and Financial Condition 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-07-24 | 8-K | 8.01 — Other Events 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-06-22 | 8-K | 5.07 — Submission of Matters to a Vote of Security Holders | EDGAR |
| 2026-06-18 | 8-K | 3.01 — Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing | EDGAR |
| 2026-06-15 | 8-K | 7.01 — Regulation FD Disclosure 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-05-28 | 8-K | 7.01 — Regulation FD Disclosure 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-05-13 | 8-K | 2.02 — Results of Operations and Financial Condition 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-03-30 | 8-K | 3.01 — Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing | EDGAR |
| 2026-03-25 | 8-K | 2.02 — Results of Operations and Financial Condition 9.01 — Financial Statements and Exhibits | EDGAR |
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