DYAI DYADIC INTERNATIONAL INC
Nasdaq · SEC CIK 1213809 · EDGAR
- Bought, last 12 months
- $0 0 purchases by 0 insiders
- Sold, last 12 months
- $125.0K 1 sales by 1 insiders
- Filings on record
- 77 since 2021-08-16, latest 2026-07-24 17:11
BoughtSold
Most active insiders, 12 months
| Insider | Title | Bought | Sold |
|---|---|---|---|
| Francisco Trust under agreement dated February 28, 1996 | 10% | — | $125.0K |
| Hazelton Joseph P | Pres, COO | — | — |
| Rawson Ping Wang | CFO | — | — |
| HERBST SETH | Dir | — | — |
| TCHELET RONEN | VP of Research, Bus. Dvlpmt | — | — |
| Lucy Patrick K. | Dir | — | — |
| Kaye Jack | Dir | — | — |
| EMALFARB MARK A | CEO, Dir, 10% | — | — |
Transactions 49
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| M | 2026-07-24 17:11 | 2026-07-22+ | DYAI | Francisco Trust under agreement dated February 28, 1996 | 10% | S - Sale | $1.31 | -95.4K | 3.28M | -3% | -$125.0K |
| DM | 2026-07-06 06:30 | 2024-06-06+ | DYAI | Francisco Trust under agreement dated February 28, 1996 | 10% | S - Sale | $1.99 | -172.9K | 3.38M | -5% | -$343.8K |
| D | 2026-01-06 | 2026-01-02 | DYAI | EMALFARB MARK A | CEO, Dir, 10% | A - Grant | $0.00 | +102.6K | 4.83M | +2% | $0 |
| D | 2026-01-06 | 2026-01-02 | DYAI | Kaye Jack | Dir | M - OptEx | — | +21.6K | 81.2K | +36% | — |
| D | 2026-01-06 | 2026-01-02 | DYAI | Lucy Patrick K. | Dir | M - OptEx | — | +21.6K | 72.3K | +42% | — |
| D | 2026-01-06 | 2026-01-02 | DYAI | HERBST SETH | Dir | M - OptEx | — | +21.6K | 202.3K | +12% | — |
| D | 2026-01-06 | 2026-01-02 | DYAI | TCHELET RONEN | VP of Research, Bus. Dvlpmt | A - Grant | $0.00 | +18.1K | 50.9K | +55% | $0 |
| D | 2026-01-06 | 2026-01-02 | DYAI | Hazelton Joseph P | Pres, COO | A - Grant | $0.00 | +36.4K | 191.8K | +23% | $0 |
| D | 2026-01-06 | 2026-01-02 | DYAI | Rawson Ping Wang | CFO | A - Grant | $0.00 | +29.2K | 170.2K | +21% | $0 |
| 2025-08-05 | 2025-08-01 | DYAI | Hazelton Joseph P | Pres, COO | P - Purchase | $0.95 | +26.0K | 155.3K | +20% | +$24.7K | |
| D | 2025-06-24 | 2025-06-20 | DYAI | Bose Arindam | Dir | M - OptEx | — | +10.8K | 61.5K | +21% | — |
| D | 2025-06-24 | 2025-06-20 | DYAI | Tarnok Michael P. | Dir | M - OptEx | — | +10.8K | 281.0K | +4% | — |
| D | 2025-03-07 | 2025-03-05 | DYAI | Kaye Jack | Dir | F - Tax | $1.45 | -27.5K | 59.6K | -32% | -$39.9K |
| DM | 2025-03-07 | 2025-03-05 | DYAI | Kaye Jack | Dir | M - OptEx | $1.33 | +30.0K | 87.2K | +52% | +$39.9K |
| DM | 2025-01-08 | 2025-01-06 | DYAI | HERBST SETH | Dir | M - OptEx | $0.97 | +25.0K | 174.5K | +17% | +$24.2K |
| D | 2025-01-07 | 2025-01-02 | DYAI | Rawson Ping Wang | CFO | A - Grant | $0.00 | +20.8K | 141.0K | +17% | $0 |
| D | 2025-01-07 | 2025-01-02 | DYAI | Tarnok Michael P. | Dir | M - OptEx | — | +23.6K | 270.3K | +10% | — |
| D | 2025-01-07 | 2025-01-02 | DYAI | TCHELET RONEN | VP of Research, Bus. Dvlpmt | A - Grant | $0.00 | +8,980 | 32.8K | +38% | $0 |
| D | 2025-01-07 | 2025-01-02 | DYAI | Bose Arindam | Dir | M - OptEx | — | +23.6K | 50.8K | +87% | — |
| D | 2025-01-07 | 2025-01-02 | DYAI | Hazelton Joseph P | COO | A - Grant | $0.00 | +30.2K | 129.3K | +30% | $0 |
| D | 2025-01-07 | 2025-01-02 | DYAI | EMALFARB MARK A | Pres, CEO, Dir, 10% | A - Grant | $0.00 | +73.1K | 4.73M | +2% | $0 |
| D | 2025-01-07 | 2025-01-02 | DYAI | HERBST SETH | Dir | M - OptEx | — | +23.6K | 155.8K | +18% | — |
| D | 2025-01-07 | 2025-01-02 | DYAI | Kaye Jack | Dir | M - OptEx | — | +23.6K | 57.2K | +70% | — |
| D | 2025-01-07 | 2025-01-02 | DYAI | Lucy Patrick K. | Dir | M - OptEx | — | +23.6K | 50.8K | +87% | — |
| DM | 2024-11-25 | 2024-11-22 | DYAI | Tarnok Michael P. | Dir | M - OptEx | $0.97 | +25.0K | 227.9K | +12% | +$24.2K |
| D | 2024-06-13 | 2024-06-11 | DYAI | Buckland Barry | Dir | M - OptEx | $1.59 | +11.8K | 39.0K | +43% | +$18.8K |
| DM | 2024-05-23 | 2024-05-21 | DYAI | Tarnok Michael P. | Dir | M - OptEx | $1.36 | +30.0K | 223.6K | +15% | +$40.8K |
| D | 2024-05-23 | 2024-05-21 | DYAI | Tarnok Michael P. | Dir | F - Tax | $1.67 | -24.4K | 221.7K | -10% | -$40.8K |
| 2024-04-15 | 2024-03-13 | DYAI | Hazelton Joseph P | Chief Business Off | A - Grant | $0.00 | +41.7K | 99.2K | +73% | $0 | |
| 2024-04-15 | 2024-03-13 | DYAI | TCHELET RONEN | VP of Research, Bus. Dvlpmt | A - Grant | $0.00 | +11.2K | 23.9K | +88% | $0 | |
| 2024-04-15 | 2024-03-13 | DYAI | EMALFARB MARK A | Pres, CEO, Dir, 10% | A - Grant | $0.00 | +124.5K | 4.66M | +3% | $0 | |
| 2024-04-15 | 2024-03-13 | DYAI | Rawson Ping Wang | CFO | A - Grant | $0.00 | +35.4K | 120.2K | +42% | $0 | |
| D | 2024-01-04 | 2024-01-03 | DYAI | Buckland Barry | Dir | M - OptEx | — | +27.2K | 27.2K | New | — |
| D | 2024-01-04 | 2024-01-03 | DYAI | Bose Arindam | Dir | M - OptEx | — | +27.2K | 27.2K | New | — |
| D | 2024-01-04 | 2024-01-03 | DYAI | HERBST SETH | Dir | M - OptEx | — | +27.2K | 132.2K | +26% | — |
| D | 2024-01-04 | 2024-01-03 | DYAI | Tarnok Michael P. | Dir | M - OptEx | — | +27.2K | 216.1K | +14% | — |
| D | 2024-01-04 | 2024-01-03 | DYAI | Kaye Jack | Dir | M - OptEx | — | +27.2K | 33.6K | +424% | — |
| D | 2024-01-04 | 2024-01-03 | DYAI | Lucy Patrick K. | Dir | M - OptEx | — | +27.2K | 27.2K | New | — |
| D | 2023-01-05 | 2023-01-03 | DYAI | TCHELET RONEN | VP of Research, Bus. Dvlpmt | A - Grant | $1.38 | +12.7K | 12.7K | New | +$17.5K |
| D | 2023-01-05 | 2023-01-03 | DYAI | EMALFARB MARK A | Pres, CEO, Dir, 10% | A - Grant | $1.38 | +138.5K | 4.53M | +3% | +$191.1K |
| D | 2023-01-05 | 2023-01-03 | DYAI | Hazelton Joseph P | Chief Business Off | A - Grant | $1.38 | +57.4K | 57.4K | New | +$79.3K |
| D | 2023-01-05 | 2023-01-03 | DYAI | Rawson Ping Wang | CFO | A - Grant | $1.38 | +39.4K | 84.9K | +86% | +$54.3K |
| MA | 2022-09-20 | 2021-07-27+ | DYAI | Francisco Trust under agreement dated February 28, 1996 | 10% | S - Sale | $5.00 | -175.0K | 3.55M | -5% | -$875.0K |
| DM | 2022-07-11 | 2022-07-07+ | DYAI | TCHELET RONEN | VP of Research, Bus. Dvlpmt | M - OptEx | $1.57 | +8,943 | 1,089 | New | +$14.0K |
| DM | 2022-07-11 | 2022-07-07+ | DYAI | TCHELET RONEN | VP of Research, Bus. Dvlpmt | S - Sale+OE | $3.49 | -8,943 | 0 | -100% | -$31.2K |
| D | 2022-01-31 | 2022-01-28 | DYAI | HERBST SETH | Dir | M - OptEx | $1.21 | +25.0K | 25.0K | New | +$30.2K |
| DMI | 2021-12-23 | 2021-12-21+ | DYAI | EMALFARB MARK A | Pres, CEO, Dir, 10% | S - Sale+OE | $4.17 | -90.9K | 4.24M | -2% | -$379.5K |
| DI | 2021-12-23 | 2021-12-23 | DYAI | EMALFARB MARK A | Pres, CEO, Dir, 10% | M - OptEx | $1.63 | +150.0K | 4.39M | +4% | +$244.5K |
| ME | 2021-08-16 | 2021-07-27+ | DYAI | Francisco Trust under agreement dated February 28, 1996 | 10% | S - Sale | $675,695.19 | -175.0K | 3.55M | -5% | — |
Purchase Sale Sale after option exercise All abbreviations