DYADIC INTERNATIONAL INC ($DYAI) Insider Transactions

Last updated: 2026-03-14 11:43 UTC | Total transactions: 116

In the last 12 months, insiders at DYADIC INTERNATIONAL INC ($DYAI) filed 116 transactions with the SEC: 2 open-market purchases totaling $1,024,700 and 0 sales totaling $0. Net insider sentiment: net buying.

DYADIC INTERNATIONAL INC operates in the Biological products, (no disgnostic substances) industry (Life sciences sector).

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Recent Insider Transactions

Transaction Date Insider Name Title Transaction Type Security Shares Price Shares Owned Following Total Shares Outstanding % of Owned % of Outstanding
Jan. 2, 2026 TCHELET RONEN VP of Research and Bus. Dvlpmt A Stock Option 47250 $0.00 47,250.0000 36,187,798 9999.99% 0.13%
Jan. 2, 2026 HERBST SETH Director A Restricted Stock Unit 39894 $0.00 39,894.0000 36,187,798 9999.99% 0.11%
Jan. 2, 2026 HERBST SETH Director A Stock Option 50000 $0.00 50,000.0000 36,187,798 9999.99% 0.14%
Jan. 2, 2026 HERBST SETH Director M Restricted Stock Unit 21552 $0.00 0.0000 36,187,798 100.00% 0.06%
Jan. 2, 2026 HERBST SETH Director M Common Stock 21552 $0.00 202,311.0000 36,187,798 11.92% 0.06%
Jan. 2, 2026 Kaye Jack Director A Restricted Stock Unit 39894 $0.00 39,894.0000 36,187,798 9999.99% 0.11%
Jan. 2, 2026 Kaye Jack Director A Stock Option 67500 $0.00 67,500.0000 36,187,798 9999.99% 0.19%
Jan. 2, 2026 Kaye Jack Director M Restricted Stock Unit 21552 $0.00 0.0000 36,187,798 100.00% 0.06%
Jan. 2, 2026 Kaye Jack Director M Common Stock 21552 $0.00 81,201.0000 36,187,798 36.13% 0.06%
Jan. 2, 2026 Lucy Patrick K. Director A Restricted Stock Unit 39894 $0.00 39,894.0000 36,187,798 9999.99% 0.11%
Jan. 2, 2026 Lucy Patrick K. Director A Stock Option 67500 $0.00 67,500.0000 36,187,798 9999.99% 0.19%
Jan. 2, 2026 Lucy Patrick K. Director M Restricted Stock Unit 21552 $0.00 0.0000 36,187,798 100.00% 0.06%
Jan. 2, 2026 Lucy Patrick K. Director M Common Stock 21552 $0.00 72,311.0000 36,187,798 42.46% 0.06%
Jan. 2, 2026 Rawson Ping Wang Chief Financial Officer A Stock Option 47250 $0.00 47,250.0000 36,187,798 9999.99% 0.13%
Jan. 2, 2026 Rawson Ping Wang Chief Financial Officer A Common Stock 29158 $0.00 170,151.0000 36,187,798 20.68% 0.08%
Jan. 2, 2026 TCHELET RONEN VP of Research and Bus. Dvlpmt A Common Stock 18064 $0.00 50,897.0000 36,187,798 55.02% 0.05%
Jan. 2, 2026 EMALFARB MARK A CEO A Stock Option 126000 $0.00 126,000.0000 36,187,798 9999.99% 0.35%
Jan. 2, 2026 EMALFARB MARK A CEO A Common Stock 102609 $0.00 4,832,667.0000 36,187,798 2.17% 0.28%
Jan. 2, 2026 Hazelton Joseph P President & COO A Stock Option 67250 $0.00 67,250.0000 36,187,798 9999.99% 0.19%
Jan. 2, 2026 Hazelton Joseph P President & COO A Common Stock 36418 $0.00 191,758.0000 36,187,798 23.44% 0.10%
Dec. 23, 2025 EMALFARB MARK A CEO A Senior Secured Convertible Promissory Note due Dec 31, 2027 1000000 $0.00 1,000,000.0000 36,187,798 9999.99% 2.76%
Dec. 23, 2025 EMALFARB MARK A CEO D Senior Secured Convertible Promissory Note due March 8, 2027 1000000 $0.00 0.0000 36,187,798 100.00% 2.76%
Sept. 15, 2025 EMALFARB MARK A CEO P Senior Secured Convertible Promissory Note due March 8, 2027 1000000 $1000000.00 1,000,000.0000 29,835,799 9999.99% 3.35%
Aug. 1, 2025 Hazelton Joseph P President and COO P Common Stock 26000 $0.95 155,340.0000 29,835,799 20.10% 0.09%
June 20, 2025 Bose Arindam Director M Common Stock 10776 $0.00 61,535.0000 29,835,799 21.23% 0.04%
June 20, 2025 Bose Arindam Director M Restricted Stock Unit 10776 $0.00 0.0000 29,835,799 100.00% 0.04%
June 20, 2025 Bose Arindam Director D Restricted Stock Unit 10776 $0.00 0.0000 29,835,799 100.00% 0.04%
June 20, 2025 Tarnok Michael P. Director M Common Stock 10776 $0.00 281,033.0000 29,835,799 3.99% 0.04%
June 20, 2025 Tarnok Michael P. Director M Restricted Stock Unit 10776 $0.00 0.0000 29,835,799 100.00% 0.04%
May 30, 2025 Hazelton Joseph P President and COO A Stock Option 25000 $0.00 25,000.0000 29,835,799 9999.99% 0.08%
March 5, 2025 Kaye Jack Director M Stock Option 7500 $0.00 0.0000 29,835,799 100.00% 0.03%
March 5, 2025 Kaye Jack Director M Stock Option 22500 $0.00 0.0000 29,835,799 100.00% 0.08%
March 5, 2025 Kaye Jack Director M Common Stock 7500 $1.33 64,666.0000 29,835,799 13.12% 0.03%
March 5, 2025 Kaye Jack Director M Common Stock 22500 $1.33 87,166.0000 29,835,799 34.79% 0.08%
March 5, 2025 Kaye Jack Director F Common Stock 27517 $1.45 59,649.0000 29,835,799 31.57% 0.09%
Jan. 6, 2024 HERBST SETH Director M Stock Option 18750 $0.00 0.0000 28,811,061 100.00% 0.07%
Jan. 6, 2025 HERBST SETH Director M Common Stock 18750 $0.97 174,509.0000 29,835,799 12.04% 0.06%
Jan. 6, 2025 HERBST SETH Director M Common Stock 6250 $0.97 180,759.0000 29,835,799 3.58% 0.02%
Jan. 6, 2024 HERBST SETH Director M Stock Option 6250 $0.00 0.0000 28,811,061 100.00% 0.02%
Jan. 2, 2025 Bose Arindam Director M Restricted Stock Unit 23585 $0.00 0.0000 29,835,799 100.00% 0.08%
Jan. 2, 2025 Bose Arindam Director A Restricted Stock Unit 21552 $0.00 21,552.0000 29,835,799 9999.99% 0.07%
Jan. 2, 2025 Hazelton Joseph P Chief Operating Officer A Common Stock 30172 $0.00 129,340.0000 29,835,799 30.43% 0.10%
Jan. 2, 2025 EMALFARB MARK A President and CEO A Common Stock 73111 $0.00 4,730,058.0000 29,835,799 1.57% 0.25%
Jan. 2, 2025 EMALFARB MARK A President and CEO A Stock Option 172000 $0.00 172,000.0000 29,835,799 9999.99% 0.58%
Jan. 2, 2025 Rawson Ping Wang Chief Financial Officer A Common Stock 20776 $0.00 140,993.0000 29,835,799 17.28% 0.07%
Jan. 2, 2025 Rawson Ping Wang Chief Financial Officer A Stock Option 64500 $0.00 64,500.0000 29,835,799 9999.99% 0.22%
Jan. 2, 2025 Bose Arindam Director M Common Stock 23585 $0.00 50,759.0000 29,835,799 86.79% 0.08%
Jan. 2, 2025 Bose Arindam Director A Stock Option 67500 $0.00 67,500.0000 29,835,799 9999.99% 0.23%
Jan. 2, 2025 Hazelton Joseph P Chief Operating Officer A Stock Option 75000 $0.00 75,000.0000 29,835,799 9999.99% 0.25%
Jan. 2, 2025 TCHELET RONEN VP of Research and Bus. Dvlpmt A Common Stock 8980 $0.00 32,833.0000 29,835,799 37.65% 0.03%
Jan. 2, 2025 TCHELET RONEN VP of Research and Bus. Dvlpmt A Stock Option 45000 $0.00 45,000.0000 29,835,799 9999.99% 0.15%
Jan. 2, 2025 Kaye Jack Director M Common Stock 23585 $0.00 57,166.0000 29,835,799 70.23% 0.08%
Jan. 2, 2025 Kaye Jack Director M Restricted Stock Unit 23585 $0.00 0.0000 29,835,799 100.00% 0.08%
Jan. 2, 2025 Kaye Jack Director A Stock Option 67500 $0.00 67,500.0000 29,835,799 9999.99% 0.23%
Jan. 2, 2025 Kaye Jack Director A Restricted Stock Unit 21552 $0.00 21,552.0000 29,835,799 9999.99% 0.07%
Jan. 2, 2025 Tarnok Michael P. Director M Common Stock 23585 $0.00 270,257.0000 29,835,799 9.56% 0.08%
Jan. 2, 2025 Tarnok Michael P. Director M Restricted Stock Unit 23585 $0.00 0.0000 29,835,799 100.00% 0.08%
Jan. 2, 2025 Tarnok Michael P. Director A Stock Option 25000 $0.00 25,000.0000 29,835,799 9999.99% 0.08%
Jan. 2, 2025 Tarnok Michael P. Director A Restricted Stock Unit 10776 $0.00 10,776.0000 29,835,799 9999.99% 0.04%
Jan. 2, 2025 HERBST SETH Director M Common Stock 23585 $0.00 155,759.0000 29,835,799 17.84% 0.08%
Jan. 2, 2025 HERBST SETH Director M Restricted Stock Unit 23585 $0.00 0.0000 29,835,799 100.00% 0.08%
Jan. 2, 2025 HERBST SETH Director A Stock Option 50000 $0.00 50,000.0000 29,835,799 9999.99% 0.17%
Jan. 2, 2025 HERBST SETH Director A Restricted Stock Unit 21552 $0.00 21,552.0000 29,835,799 9999.99% 0.07%
Jan. 2, 2025 Lucy Patrick K. Director M Common Stock 23585 $0.00 50,759.0000 29,835,799 86.79% 0.08%
Jan. 2, 2025 Lucy Patrick K. Director M Restricted Stock Unit 23585 $0.00 0.0000 29,835,799 100.00% 0.08%
Jan. 2, 2025 Lucy Patrick K. Director A Stock Option 67500 $0.00 67,500.0000 29,835,799 9999.99% 0.23%
Jan. 2, 2025 Lucy Patrick K. Director A Restricted Stock Unit 21552 $0.00 21,552.0000 29,835,799 9999.99% 0.07%
Nov. 22, 2024 Tarnok Michael P. Director M Common Stock 6250 $0.97 227,922.0000 28,811,061 2.82% 0.02%
Nov. 22, 2024 Tarnok Michael P. Director M Common Stock 18750 $0.97 246,672.0000 28,811,061 8.23% 0.07%
Nov. 22, 2024 Tarnok Michael P. Director M Stock Option 6250 $0.00 0.0000 28,811,061 100.00% 0.02%
Nov. 22, 2024 Tarnok Michael P. Director M Stock Option 18750 $0.00 0.0000 28,811,061 100.00% 0.07%
June 11, 2024 Buckland Barry Director M Common Stock 11793 $1.59 38,967.0000 28,811,061 43.40% 0.04%
June 11, 2024 Buckland Barry Director M Restricted Stock Unit 11793 $0.00 38,967.0000 28,811,061 23.23% 0.04%
June 11, 2024 Buckland Barry Director D Restricted Stock Unit 11792 $0.00 38,967.0000 28,811,061 23.23% 0.04%
May 21, 2024 Tarnok Michael P. Director M Common Stock 7500 $1.36 223,603.0000 28,811,061 3.47% 0.03%
May 21, 2024 Tarnok Michael P. Director M Stock Option 16875 $0.00 0.0000 28,811,061 100.00% 0.06%
May 21, 2024 Tarnok Michael P. Director M Stock Option 5625 $0.00 0.0000 28,811,061 100.00% 0.02%
May 21, 2024 Tarnok Michael P. Director M Stock Option 7500 $0.00 0.0000 28,811,061 100.00% 0.03%
May 21, 2024 Tarnok Michael P. Director F Common Stock 24431 $1.67 221,672.0000 28,811,061 9.93% 0.08%
May 21, 2024 Tarnok Michael P. Director M Common Stock 16875 $1.36 246,103.0000 28,811,061 7.36% 0.06%
May 21, 2024 Tarnok Michael P. Director M Common Stock 5625 $1.36 229,228.0000 28,811,061 2.52% 0.02%
March 13, 2024 TCHELET RONEN VP of Research and Bus. Dvlpmt A Common Stock 11169 $0.00 23,853.0000 28,811,061 88.06% 0.04%
March 13, 2024 Rawson Ping Wang Chief Financial Officer A Common Stock 35366 $0.00 120,217.0000 28,811,061 41.68% 0.12%
March 13, 2024 EMALFARB MARK A President and CEO A Common Stock 124454 $0.00 4,656,947.0000 28,811,061 2.75% 0.43%
March 13, 2024 Hazelton Joseph P Chief Business Officer A Common Stock 41720 $0.00 99,168.0000 28,811,061 72.62% 0.14%
April 11, 2024 Hazelton Joseph P Chief Business Officer A Stock Option 20000 $0.00 20,000.0000 28,811,061 9999.99% 0.07%
April 11, 2024 Tarnok Michael P. Director D Stock Option 13125 $0.00 54,375.0000 28,811,061 19.44% 0.05%
April 11, 2024 Lucy Patrick K. Director A Stock Option 13125 $0.00 13,125.0000 28,811,061 9999.99% 0.05%
Jan. 3, 2024 Tarnok Michael P. Director M Restricted Stock Unit 27174 $0.00 0.0000 28,811,061 100.00% 0.09%
Jan. 3, 2024 Kaye Jack Director M Common Stock 27174 $0.00 33,581.0000 28,811,061 424.13% 0.09%
Jan. 2, 2024 Kaye Jack Director A Stock Option 67500 $0.00 67,500.0000 28,811,061 9999.99% 0.23%
Jan. 2, 2024 Kaye Jack Director A Restricted Stock Unit 23585 $0.00 23,585.0000 28,811,061 9999.99% 0.08%
Jan. 3, 2024 Kaye Jack Director M Restricted Stock Unit 27174 $0.00 0.0000 28,811,061 100.00% 0.09%
Jan. 3, 2024 Lucy Patrick K. Director M Common Stock 27174 $0.00 27,174.0000 28,811,061 9999.99% 0.09%
Jan. 2, 2024 TCHELET RONEN VP of Research and Bus. Dvlpmt A Stock Option 37500 $0.00 37,500.0000 28,811,061 9999.99% 0.13%
Jan. 2, 2024 Rawson Ping Wang Chief Financial Officer A Stock Option 75000 $0.00 75,000.0000 28,811,061 9999.99% 0.26%
Jan. 2, 2024 Hazelton Joseph P Chief Business Officer A Stock Option 75000 $0.00 75,000.0000 28,811,061 9999.99% 0.26%
Jan. 2, 2024 EMALFARB MARK A President and CEO A Stock Option 200000 $0.00 200,000.0000 28,811,061 9999.99% 0.69%
Jan. 3, 2024 Bose Arindam Director M Restricted Stock Unit 27174 $0.00 0.0000 28,811,061 100.00% 0.09%
Jan. 2, 2024 Bose Arindam Director A Restricted Stock Unit 23585 $0.00 23,585.0000 28,811,061 9999.99% 0.08%
Jan. 2, 2024 Lucy Patrick K. Director A Stock Option 50000 $0.00 50,000.0000 28,811,061 9999.99% 0.17%
Jan. 3, 2024 Bose Arindam Director M Common Stock 27174 $0.00 27,174.0000 28,811,061 9999.99% 0.09%
Jan. 2, 2024 Bose Arindam Director A Stock Option 67500 $0.00 67,500.0000 28,811,061 9999.99% 0.23%
Jan. 2, 2024 Lucy Patrick K. Director A Restricted Stock Unit 23585 $0.00 23,585.0000 28,811,061 9999.99% 0.08%
Jan. 3, 2024 Lucy Patrick K. Director M Restricted Stock Unit 27174 $0.00 0.0000 28,811,061 100.00% 0.09%
Jan. 3, 2024 Buckland Barry Director M Common Stock 27174 $0.00 27,174.0000 28,811,061 9999.99% 0.09%
Jan. 2, 2024 Buckland Barry Director A Stock Option 50000 $0.00 50,000.0000 28,811,061 9999.99% 0.17%
Jan. 2, 2024 Buckland Barry Director A Restricted Stock Unit 23585 $0.00 23,585.0000 28,811,061 9999.99% 0.08%
Jan. 3, 2024 Buckland Barry Director M Restricted Stock Unit 27174 $0.00 0.0000 28,811,061 100.00% 0.09%
Jan. 3, 2024 HERBST SETH Director M Common Stock 27174 $0.00 132,174.0000 28,811,061 25.88% 0.09%
Jan. 2, 2024 HERBST SETH Director A Stock Option 50000 $0.00 50,000.0000 28,811,061 9999.99% 0.17%
Jan. 2, 2024 HERBST SETH Director A Restricted Stock Unit 23585 $0.00 23,585.0000 28,811,061 9999.99% 0.08%
Jan. 3, 2024 HERBST SETH Director M Restricted Stock Unit 27174 $0.00 0.0000 28,811,061 100.00% 0.09%
Jan. 3, 2024 Tarnok Michael P. Director M Common Stock 27174 $0.00 216,103.0000 28,811,061 14.38% 0.09%
Jan. 2, 2024 Tarnok Michael P. Director A Stock Option 67500 $0.00 67,500.0000 28,811,061 9999.99% 0.23%
Jan. 2, 2024 Tarnok Michael P. Director A Restricted Stock Unit 23585 $0.00 23,585.0000 28,811,061 9999.99% 0.08%