Real time insider trading transaction history:
- Insiders are prohibited from making short-swing profits by trading their shares within 6 months of the registration or acquiring the shares.
- Shares are not adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
What is insider trading>>
- Peter Lynch
What is insider trading>>

Common stock purchase or sale:
Transaction Date |
Reported DateTime |
Company | Symbol | Insider Relationship |
Shares Traded |
Average Price |
Total Amount |
Shares Owned |
Filing |
2021-12-21 Sale |
2021-12-23 6:29 pm |
DYADIC INTERNATIONAL INC | DYAI | EMALFARB MARK A President and CEO 10% Owner |
90,902 | $4.1749 | $379,503 | 4,394,015 (Indirect Direct) |
View |
2021-06-07 Sale |
2021-06-09 5:56 pm |
DYADIC INTERNATIONAL INC | DYAI | EMALFARB MARK A President and CEO 10% Owner |
97,000 | $3.8553 | $373,960 | 4,334,917 (Indirect Direct) |
View |
2021-06-02 Sale |
2021-06-04 8:25 pm |
DYADIC INTERNATIONAL INC | DYAI | EMALFARB MARK A President and CEO 10% Owner |
235,070 | $3.787 | $890,208 | 4,331,917 (Indirect Direct) |
View |
Stock options: Exercise, Award, Grant, Conversion
Transaction Date |
Reported DateTime |
Exercisable Expiration |
Company | Symnbol | Insider Relationship |
Shares Traded |
Conversion Price |
Shares Owned |
Filing |
2025-01-02 Option Award |
2025-01-07 06:01 am |
N/A 2035-01-02 |
DYADIC INTERNATIONAL INC | DYAI | EMALFARB MARK A President and CEO 10% Owner |
245,111 | $0 | 4,902,058 (Direct) |
View |
2024-03-13 Option Award |
2024-04-15 9:39 pm |
N/A N/A |
DYADIC INTERNATIONAL INC | DYAI | EMALFARB MARK A President and CEO 10% Owner |
124,454 | $0 | 4,656,947 (Direct) |
View |
2024-01-02 Option Award |
2024-01-04 8:07 pm |
N/A 2034-01-02 |
DYADIC INTERNATIONAL INC | DYAI | EMALFARB MARK A President and CEO 10% Owner |
200,000 | $0 | 200,000 (Direct) |
View |
2023-01-03 Option Award |
2023-01-05 7:30 pm |
2024-01-02 2033-01-02 |
DYADIC INTERNATIONAL INC | DYAI | EMALFARB MARK A President and CEO 10% Owner |
200,000 | $0 | 4,732,493 (Direct) |
View |
2023-01-03 Option Award |
2023-01-05 7:30 pm |
N/A N/A |
DYADIC INTERNATIONAL INC | DYAI | EMALFARB MARK A President and CEO 10% Owner |
138,478 | $1.38 | 4,732,493 (Direct) |
View |
2022-01-03 Option Award |
2022-01-05 5:32 pm |
2023-01-03 2032-01-02 |
DYADIC INTERNATIONAL INC | DYAI | EMALFARB MARK A President and CEO 10% Owner |
200,000 | $0 | 200,000 (Direct) |
View |
2021-12-23 Exercise |
2021-12-23 6:29 pm |
2017-01-03 2022-01-03 |
DYADIC INTERNATIONAL INC | DYAI | EMALFARB MARK A President and CEO 10% Owner |
150,000 | $0 | 4,394,015 (Direct) |
View |
2021-12-23 Exercise |
2021-12-23 6:29 pm |
N/A N/A |
DYADIC INTERNATIONAL INC | DYAI | EMALFARB MARK A President and CEO 10% Owner |
150,000 | $1.63 | 4,394,015 (Indirect) |
View |
2021-06-09 Exercise |
2021-06-09 5:56 pm |
2016-06-21 2021-06-21 |
DYADIC INTERNATIONAL INC | DYAI | EMALFARB MARK A President and CEO 10% Owner |
100,000 | $0 | 4,334,917 (Direct) |
View |
2021-06-09 Exercise |
2021-06-09 5:56 pm |
N/A N/A |
DYADIC INTERNATIONAL INC | DYAI | EMALFARB MARK A President and CEO 10% Owner |
100,000 | $1.67 | 4,334,917 (Indirect) |
View |
2021-06-04 Exercise |
2021-06-04 8:25 pm |
2016-06-21 2021-06-21 |
DYADIC INTERNATIONAL INC | DYAI | EMALFARB MARK A President and CEO 10% Owner |
400,000 | $0 | 4,331,917 (Direct) |
View |
2021-06-04 Exercise |
2021-06-04 8:25 pm |
N/A N/A |
DYADIC INTERNATIONAL INC | DYAI | EMALFARB MARK A President and CEO 10% Owner |
400,000 | $1.67 | 4,331,917 (Indirect) |
View |
2021-01-04 Option Award |
2021-01-06 5:21 pm |
2022-01-04 2031-01-03 |
DYADIC INTERNATIONAL INC | DYAI | EMALFARB MARK A President and CEO 10% Owner |
200,000 | $0 | 200,000 (Direct) |
View |