Insider trading activities (stock purchases, sales, and option exercises) reported by insiders of Dyadic International Inc (DYAI) since 2019 are shown in Table 1 and Table 2. Table 1 shows the monthly insider trading data of Dyadic International Inc. Table 2 shows the detailed insider transactions. This company's CIK number is 1213809.
Total stock buying since 2019: $149,578.
Total stock sales since 2019: $118,248,967,694.
Total stock option exercises since 2019: $1,601,486.
| Insider Buying | Insider Sales | Option Exercises | ||||
|---|---|---|---|---|---|---|
| Year | Shares | Value | Shares | Value | Shares | Value |
| 2025 | 26,000 | $24,700 | 0 | $0 | 194,477 | $64,150 |
| 2024 | 0 | $0 | 0 | $0 | 229,837 | $83,800 |
| 2022 | 0 | $0 | 8,943 | $31,202 | 33,943 | $44,289 |
| 2021 | 33,330 | $124,878 | 597,972 | $118,248,302,668 | 700,000 | $1,175,999 |
| 2019 | 0 | $0 | 105,000 | $633,824 | 155,000 | $233,248 |
| Trading Period | Insider Buying | Insider Sales | Option Exercises | |||
|---|---|---|---|---|---|---|
| year-month | Shares | Value | Shares | Value | Shares | Value |
| 2025-08 | 26,000 | $24,700 | 0 | $0 | 0 | $0 |
| 2025-06 | 0 | $0 | 0 | $0 | 21,552 | $0 |
| 2025-03 | 0 | $0 | 0 | $0 | 30,000 | $39,900 |
| 2025-01 | 0 | $0 | 0 | $0 | 142,925 | $24,250 |
| 2024-11 | 0 | $0 | 0 | $0 | 25,000 | $24,250 |
| 2024-06 | 0 | $0 | 0 | $0 | 11,793 | $18,750 |
| 2024-05 | 0 | $0 | 0 | $0 | 30,000 | $40,800 |
| 2024-01 | 0 | $0 | 0 | $0 | 163,044 | $0 |
| 2022-07 | 0 | $0 | 8,943 | $31,202 | 8,943 | $14,039 |
| 2022-01 | 0 | $0 | 0 | $0 | 25,000 | $30,250 |
| 2021-12 | 0 | $0 | 90,902 | $379,501 | 150,000 | $244,499 |
| 2021-08 | 0 | $0 | 150,000 | $115,647,534,000 | 0 | $0 |
| 2021-07 | 0 | $0 | 25,000 | $2,599,125,000 | 0 | $0 |
| 2021-06 | 33,330 | $124,878 | 332,070 | $1,264,167 | 500,000 | $835,000 |
| 2021-01 | 0 | $0 | 0 | $0 | 50,000 | $96,500 |
| 2019-12 | 0 | $0 | 25,000 | $150,917 | 25,000 | $34,949 |
| 2019-11 | 0 | $0 | 10,000 | $59,900 | 10,000 | $14,100 |
| 2019-10 | 0 | $0 | 10,000 | $60,608 | 10,000 | $14,099 |
| 2019-09 | 0 | $0 | 10,000 | $52,699 | 10,000 | $14,100 |
| 2019-07 | 0 | $0 | 10,000 | $58,700 | 10,000 | $14,100 |
| 2019-06 | 0 | $0 | 40,000 | $251,000 | 40,000 | $56,400 |
| 2019-04 | 0 | $0 | 0 | $0 | 50,000 | $85,500 |
| Trade Date | Insider Name | Trade Type | Shares | Price ($) | Value ($) |
|---|---|---|---|---|---|
| 2025-08-01 | Hazelton Joseph P (President and COO) | Buy | 26,000 | .95 | 24,700 |
| 2025-06-20 | Bose Arindam (Director) | Option Ex | 10,776 | .00 | 0 |
| 2025-06-20 | Tarnok Michael P. (Director) | Option Ex | 10,776 | .00 | 0 |
| 2025-03-05 | Kaye Jack (Director) | Option Ex | 30,000 | 1.33 | 39,900 |
| 2025-01-06 | Herbst Seth (Director) | Option Ex | 25,000 | .97 | 24,250 |
| 2025-01-02 | Herbst Seth (Director) | Option Ex | 23,585 | .00 | 0 |
| 2025-01-02 | Bose Arindam (Director) | Option Ex | 23,585 | .00 | 0 |
| 2025-01-02 | Lucy Patrick K. (Director) | Option Ex | 23,585 | .00 | 0 |
| 2025-01-02 | Tarnok Michael P. (Director) | Option Ex | 23,585 | .00 | 0 |
| 2025-01-02 | Kaye Jack (Director) | Option Ex | 23,585 | .00 | 0 |
| 2024-11-22 | Tarnok Michael P. (Director) | Option Ex | 25,000 | .97 | 24,250 |
| 2024-06-11 | Buckland Barry (Director) | Option Ex | 11,793 | 1.59 | 18,750 |
| 2024-05-21 | Tarnok Michael P. (Director) | Option Ex | 30,000 | 1.36 | 40,800 |
| 2024-01-03 | Herbst Seth (Director) | Option Ex | 27,174 | .00 | 0 |
| 2024-01-03 | Bose Arindam (Director) | Option Ex | 27,174 | .00 | 0 |
| 2024-01-03 | Buckland Barry (Director) | Option Ex | 27,174 | .00 | 0 |
| 2024-01-03 | Lucy Patrick K. (Director) | Option Ex | 27,174 | .00 | 0 |
| 2024-01-03 | Tarnok Michael P. (Director) | Option Ex | 27,174 | .00 | 0 |
| 2024-01-03 | Kaye Jack (Director) | Option Ex | 27,174 | .00 | 0 |
| 2022-07-08 | Tchelet Ronen (VP of Research and Bus. Dvlpmt) | Sale | 1,089 | 3.41 | 3,713 |
| 2022-07-08 | Tchelet Ronen (VP of Research and Bus. Dvlpmt) | Option Ex | 1,089 | 1.57 | 1,709 |
| 2022-07-07 | Tchelet Ronen (VP of Research and Bus. Dvlpmt) | Sale | 7,854 | 3.50 | 27,489 |
| 2022-07-07 | Tchelet Ronen (VP of Research and Bus. Dvlpmt) | Option Ex | 7,854 | 1.57 | 12,330 |
| 2022-01-28 | Herbst Seth (Director) | Option Ex | 25,000 | 1.21 | 30,250 |
| 2021-12-23 | Emalfarb Mark A (President and CEO) | Sale | 28,767 | 4.10 | 117,944 |
| 2021-12-23 | Emalfarb Mark A (President and CEO) | Option Ex | 150,000 | 1.63 | 244,499 |
| 2021-12-22 | Emalfarb Mark A (President and CEO) | Sale | 35,649 | 4.12 | 146,873 |
| 2021-12-21 | Emalfarb Mark A (President and CEO) | Sale | 26,486 | 4.33 | 114,684 |
| 2021-08-11 | Francisco Trust Under Agreement Dated February 28, 1996 | Sale | 150,000 | 770,983.56 | 115,647,534,000 |
| 2021-07-27 | Francisco Trust Under Agreement Dated February 28, 1996 | Sale | 25,000 | 103,965.00 | 2,599,125,000 |
| 2021-06-09 | Emalfarb Mark A (President and CEO) | Sale | 23,000 | 3.72 | 85,560 |
| 2021-06-09 | Emalfarb Mark A (President and CEO) | Option Ex | 100,000 | 1.67 | 167,000 |
| 2021-06-08 | Emalfarb Mark A (President and CEO) | Sale | 30,000 | 3.82 | 114,600 |
| 2021-06-07 | Emalfarb Mark A (President and CEO) | Sale | 44,000 | 3.95 | 173,800 |
| 2021-06-04 | Emalfarb Mark A (President and CEO) | Sale | 132,000 | 3.85 | 508,200 |
| 2021-06-04 | Emalfarb Mark A (President and CEO) | Option Ex | 400,000 | 1.67 | 668,000 |
| 2021-06-03 | Rawson Ping Wang (Chief Financial Officer) | Buy | 4,670 | 3.60 | 16,812 |
| 2021-06-03 | Emalfarb Mark A (President and CEO) | Sale | 26,721 | 3.61 | 96,462 |
| 2021-06-02 | Rawson Ping Wang (Chief Financial Officer) | Buy | 22,330 | 3.78 | 83,633 |
| 2021-06-02 | Emalfarb Mark A (President and CEO) | Sale | 76,349 | 3.74 | 285,545 |
| 2021-01-29 | Herbst Seth (Director) | Option Ex | 50,000 | 1.93 | 96,500 |
| 2019-12-11 | Tchelet Ronen (VP of Research and Bus. Dvlpmt) | Sale | 4,575 | 5.80 | 26,535 |
| 2019-12-11 | Tchelet Ronen (VP of Research and Bus. Dvlpmt) | Option Ex | 4,575 | 1.41 | 6,450 |
| 2019-12-10 | Tchelet Ronen (VP of Research and Bus. Dvlpmt) | Sale | 5,425 | 5.84 | 31,682 |
| 2019-12-10 | Tchelet Ronen (VP of Research and Bus. Dvlpmt) | Option Ex | 5,425 | 1.41 | 7,649 |
| 2019-12-03 | Buckland Barry | Sale | 15,000 | 6.18 | 92,700 |
| 2019-12-03 | Buckland Barry | Option Ex | 15,000 | 1.39 | 20,850 |
| 2019-11-11 | Tchelet Ronen (VP of Research and Bus. Dvlpmt) | Sale | 10,000 | 5.99 | 59,900 |
| 2019-11-11 | Tchelet Ronen (VP of Research and Bus. Dvlpmt) | Option Ex | 10,000 | 1.41 | 14,100 |
| 2019-10-11 | Tchelet Ronen (VP of Research and Bus. Dvlpmt) | Sale | 5,218 | 6.08 | 31,725 |
| 2019-10-11 | Tchelet Ronen (VP of Research and Bus. Dvlpmt) | Option Ex | 5,218 | 1.41 | 7,357 |
| 2019-10-10 | Tchelet Ronen (VP of Research and Bus. Dvlpmt) | Sale | 4,782 | 6.04 | 28,883 |
| 2019-10-10 | Tchelet Ronen (VP of Research and Bus. Dvlpmt) | Option Ex | 4,782 | 1.41 | 6,742 |
| 2019-09-10 | Tchelet Ronen (VP of Research and Bus. Dvlpmt) | Sale | 10,000 | 5.27 | 52,699 |
| 2019-09-10 | Tchelet Ronen (VP of Research and Bus. Dvlpmt) | Option Ex | 10,000 | 1.41 | 14,100 |
| 2019-07-10 | Tchelet Ronen (VP of Research and Bus. Dvlpmt) | Sale | 10,000 | 5.87 | 58,700 |
| 2019-07-10 | Tchelet Ronen (VP of Research and Bus. Dvlpmt) | Option Ex | 10,000 | 1.41 | 14,100 |
| 2019-06-18 | Tchelet Ronen (VP of Research and Bus. Dvlpmt) | Sale | 20,000 | 6.44 | 128,800 |
| 2019-06-18 | Tchelet Ronen (VP of Research and Bus. Dvlpmt) | Option Ex | 20,000 | 1.41 | 28,200 |
| 2019-06-17 | Tchelet Ronen (VP of Research and Bus. Dvlpmt) | Sale | 20,000 | 6.11 | 122,200 |
| 2019-06-17 | Tchelet Ronen (VP of Research and Bus. Dvlpmt) | Option Ex | 20,000 | 1.41 | 28,200 |
| 2019-04-12 | Emalfarb Mark A (President and CEO) | Option Ex | 50,000 | 1.71 | 85,500 |
Insider trading activities including stock purchases, stock sales, and option exercises of DYAI listed in the above tables cannot be completely guaranteed as to their accuracy. For more insider trading information of Dyadic International Inc (symbol DYAI, CIK number 1213809) see the Securities and Exchange Commission (SEC) website.