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EMALFARB MARK A

Disclosed activity across 1 company

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69964
SEC CIK
0001328287

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
DYADIC INTERNATIONAL INCDYAI · Entity 7611Director · CEO · 10% ownerJanuary 02, 2026January 06, 2026

Disclosed balances

About these balances

Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.

DYADIC INTERNATIONAL INC

Report date January 02, 2026 · Filed January 06, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect4,832,667 Reported balance After 2026-01-02 transaction · row 1
1 source row

Row 1 · 2026-01-02 · Grant · Acquired 102,609 · Balance 4,832,667

F1: Represents common stock issued upon the vesting of RSUs. The RSUs were granted pursuant to the Issuer's key employee annual bonus, in lieu of a cash bonus earned for the year ended 2025. The RSUs vested in full upon grant.

Stock OptionSEC Table II · derivative / convertible security · Conversion / exercise price $0.94 · Expires 2036-01-02Direct126,000 Reported balance After 2026-01-02 transaction · row 2 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 2 · 2026-01-02 · Grant · Acquired 126,000 · Balance 126,000

F2: Annual grant of stock options.

F3: This option vests in four equal installments beginning on the first anniversary of the date of grant, subject to continued service to the Issuer.

Filing footnotes · ownership attribution and instrument terms

F1: Represents common stock issued upon the vesting of RSUs. The RSUs were granted pursuant to the Issuer's key employee annual bonus, in lieu of a cash bonus earned for the year ended 2025. The RSUs vested in full upon grant.

F2: Annual grant of stock options.

F3: This option vests in four equal installments beginning on the first anniversary of the date of grant, subject to continued service to the Issuer.

Transaction history

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Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”

The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.

Transaction dateCompanyActivity / securityShares / unitsReported priceReported valueDetails
January 02, 2026 Filed Jan 6, 2026 23:04 UTC DYADIC INTERNATIONAL INC DYAI · Entity 7611 GrantStock Option · Derivative 126,000 $0.00 Strike: $0.94 $0.00
Disclosure

SEC source: 0001493152-26-000653 · ownership.xml · derivative · entry 2

EMALFARB MARK A · CIK 0001328287 · Director · CEO · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 126,000

Underlying: Common Stock · 126,000 shares

Expires 2036-01-02

F2 · shares: Annual grant of stock options.

F3 · derivative.exercise_date: This option vests in four equal installments beginning on the first anniversary of the date of grant, subject to continued service to the Issuer.

Read SEC document
January 02, 2026 Filed Jan 6, 2026 23:04 UTC DYADIC INTERNATIONAL INC DYAI · Entity 7611 GrantCommon Stock 102,609 $0.00 $0.00
Disclosure

SEC source: 0001493152-26-000653 · ownership.xml · nonDerivative · entry 1

EMALFARB MARK A · CIK 0001328287 · Director · CEO · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,832,667

F1 · price: Represents common stock issued upon the vesting of RSUs. The RSUs were granted pursuant to the Issuer's key employee annual bonus, in lieu of a cash bonus earned for the year ended 2025. The RSUs vested in full upon grant.

Read SEC document
December 23, 2025 Filed Dec 29, 2025 22:00 UTC DYADIC INTERNATIONAL INC DYAI · Entity 7611 GrantSenior Secured Convertible Promissory Note due Dec 31, 2027 · Derivative Not disclosed Not disclosed Strike: $1.05 $1,000,000.00
Disclosure

SEC source: 0001493152-25-029409 · ownership.xml · derivative · entry 2

EMALFARB MARK A · CIK 0001328287 · Director · CEO · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · Through Mark A Emalfarb Trust U/A/ DTD 10/1/1987

Disclosed balance after: Not disclosed

Underlying: Common Stock · 952,381 shares

Expires 2027-12-31

F1 · reported_value: On December 23, 2025, Dyadic International, Inc. (the "Company") entered into an amendment (the "Amendment") to the Form of Senior Secured Convertible Promissory Note due March 8, 2027 (the "Convertible Notes"). Following the Amendment, the Convertible Notes will mature December 31, 2027 and their conversion price is $1.05. The Amendment was approved by the Company's board of directors, and did not involve the exchange of consideration between the Company and the holders.

F1 · price: On December 23, 2025, Dyadic International, Inc. (the "Company") entered into an amendment (the "Amendment") to the Form of Senior Secured Convertible Promissory Note due March 8, 2027 (the "Convertible Notes"). Following the Amendment, the Convertible Notes will mature December 31, 2027 and their conversion price is $1.05. The Amendment was approved by the Company's board of directors, and did not involve the exchange of consideration between the Company and the holders.

F1 · derivative.exercise_date: On December 23, 2025, Dyadic International, Inc. (the "Company") entered into an amendment (the "Amendment") to the Form of Senior Secured Convertible Promissory Note due March 8, 2027 (the "Convertible Notes"). Following the Amendment, the Convertible Notes will mature December 31, 2027 and their conversion price is $1.05. The Amendment was approved by the Company's board of directors, and did not involve the exchange of consideration between the Company and the holders.

F1 · valueOwnedAfter: On December 23, 2025, Dyadic International, Inc. (the "Company") entered into an amendment (the "Amendment") to the Form of Senior Secured Convertible Promissory Note due March 8, 2027 (the "Convertible Notes"). Following the Amendment, the Convertible Notes will mature December 31, 2027 and their conversion price is $1.05. The Amendment was approved by the Company's board of directors, and did not involve the exchange of consideration between the Company and the holders.

Read SEC document
December 23, 2025 Filed Dec 29, 2025 22:00 UTC DYADIC INTERNATIONAL INC DYAI · Entity 7611 Disposition to issuerSenior Secured Convertible Promissory Note due March 8, 2027 · Derivative Not disclosed Not disclosed Strike: $1.40 $1,000,000.00
Disclosure

SEC source: 0001493152-25-029409 · ownership.xml · derivative · entry 1

EMALFARB MARK A · CIK 0001328287 · Director · CEO · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · Through Mark A Emalfarb Trust U/A/ DTD 10/1/1987

Disclosed balance after: 0

Underlying: Common Stock · 714,286 shares

Expires 2027-03-08

F1 · reported_value: On December 23, 2025, Dyadic International, Inc. (the "Company") entered into an amendment (the "Amendment") to the Form of Senior Secured Convertible Promissory Note due March 8, 2027 (the "Convertible Notes"). Following the Amendment, the Convertible Notes will mature December 31, 2027 and their conversion price is $1.05. The Amendment was approved by the Company's board of directors, and did not involve the exchange of consideration between the Company and the holders.

F1 · price: On December 23, 2025, Dyadic International, Inc. (the "Company") entered into an amendment (the "Amendment") to the Form of Senior Secured Convertible Promissory Note due March 8, 2027 (the "Convertible Notes"). Following the Amendment, the Convertible Notes will mature December 31, 2027 and their conversion price is $1.05. The Amendment was approved by the Company's board of directors, and did not involve the exchange of consideration between the Company and the holders.

F1 · derivative.exercise_date: On December 23, 2025, Dyadic International, Inc. (the "Company") entered into an amendment (the "Amendment") to the Form of Senior Secured Convertible Promissory Note due March 8, 2027 (the "Convertible Notes"). Following the Amendment, the Convertible Notes will mature December 31, 2027 and their conversion price is $1.05. The Amendment was approved by the Company's board of directors, and did not involve the exchange of consideration between the Company and the holders.

F1 · balance_after: On December 23, 2025, Dyadic International, Inc. (the "Company") entered into an amendment (the "Amendment") to the Form of Senior Secured Convertible Promissory Note due March 8, 2027 (the "Convertible Notes"). Following the Amendment, the Convertible Notes will mature December 31, 2027 and their conversion price is $1.05. The Amendment was approved by the Company's board of directors, and did not involve the exchange of consideration between the Company and the holders.

Read SEC document
September 15, 2025 Filed Sep 17, 2025 21:00 UTC DYADIC INTERNATIONAL INC DYAI · Entity 7611 PurchaseSenior Secured Convertible Promissory Note due March 8, 2027 · Derivative Not disclosed $1,000,000.00 Strike: $1.40 $1,000,000.00
Disclosure

SEC source: 0001493152-25-013905 · ownership.xml · derivative · entry 1

EMALFARB MARK A · CIK 0001328287 · Director · CEO · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · Through Mark A Emalfarb Trust U/A/ DTD 10/1/1987

Disclosed balance after: Not disclosed

Underlying: Common Stock · 714,286 shares

Expires 2027-03-08

F1 · reported_value: Represents a purchase of $1,000,000 principal amount of Senior Secured Convertible Promissory Note due March 8, 2027 (the "Convertible Notes.") The Convertible Notes are senior, secured obligations of the Issuer and its affiliates, and interest is payable quarterly in cash on the principal amount equal to 8% per annum. The Convertible Notes will mature on March 8, 2027, unless earlier converted, repurchased, or redeemed in accordance with their terms. The Convertible Notes have a conversion price of $1.40 per share of common stock.

F1 · price: Represents a purchase of $1,000,000 principal amount of Senior Secured Convertible Promissory Note due March 8, 2027 (the "Convertible Notes.") The Convertible Notes are senior, secured obligations of the Issuer and its affiliates, and interest is payable quarterly in cash on the principal amount equal to 8% per annum. The Convertible Notes will mature on March 8, 2027, unless earlier converted, repurchased, or redeemed in accordance with their terms. The Convertible Notes have a conversion price of $1.40 per share of common stock.

F1 · derivative.exercise_date: Represents a purchase of $1,000,000 principal amount of Senior Secured Convertible Promissory Note due March 8, 2027 (the "Convertible Notes.") The Convertible Notes are senior, secured obligations of the Issuer and its affiliates, and interest is payable quarterly in cash on the principal amount equal to 8% per annum. The Convertible Notes will mature on March 8, 2027, unless earlier converted, repurchased, or redeemed in accordance with their terms. The Convertible Notes have a conversion price of $1.40 per share of common stock.

F1 · valueOwnedAfter: Represents a purchase of $1,000,000 principal amount of Senior Secured Convertible Promissory Note due March 8, 2027 (the "Convertible Notes.") The Convertible Notes are senior, secured obligations of the Issuer and its affiliates, and interest is payable quarterly in cash on the principal amount equal to 8% per annum. The Convertible Notes will mature on March 8, 2027, unless earlier converted, repurchased, or redeemed in accordance with their terms. The Convertible Notes have a conversion price of $1.40 per share of common stock.

Read SEC document
January 02, 2025 Filed Jan 7, 2025 11:01 UTC DYADIC INTERNATIONAL INC DYAI · Entity 7611 GrantStock Option · Derivative 172,000 $0.00 Strike: $1.74 $0.00
Disclosure

SEC source: 0001437749-25-000545 · rdgdoc.xml · derivative · entry 2

EMALFARB MARK A · CIK 0001328287 · Director · President and CEO · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 172,000

Underlying: Common Stock · 172,000 shares

Expires 2035-01-02

F2 · shares: Annual grant of stock options.

F3 · derivative.exercise_date: This option vests in four equal installments beginning on the first anniversary of the date of grant.

Read SEC document
January 02, 2025 Filed Jan 7, 2025 11:01 UTC DYADIC INTERNATIONAL INC DYAI · Entity 7611 GrantCommon Stock 73,111 $0.00 $0.00
Disclosure

SEC source: 0001437749-25-000545 · rdgdoc.xml · nonDerivative · entry 1

EMALFARB MARK A · CIK 0001328287 · Director · President and CEO · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,730,058

F1 · price: The RSUs were granted pursuant to the Issuer's key employee annual bonus, in lieu of a cash bonus earned for the year ended 2024. The RSUs vested in full upon grant.

Read SEC document
March 13, 2024 Filed Apr 16, 2024 01:39 UTC DYADIC INTERNATIONAL INC DYAI · Entity 7611 GrantCommon Stock 124,454 $0.00 $0.00
Disclosure

SEC source: 0001437749-24-012123 · rdgdoc.xml · nonDerivative · entry 1

EMALFARB MARK A · CIK 0001328287 · Director · President and CEO · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,656,947

F1 · price: The RSUs were granted pursuant to the Issuer's key employee annual bonus, in lieu of a cash bonus earned for the year ended 2023. The RSUs vested in full upon grant.

Read SEC document
January 02, 2024 Filed Jan 5, 2024 01:07 UTC DYADIC INTERNATIONAL INC DYAI · Entity 7611 GrantStock Option · Derivative 200,000 $0.00 Strike: $1.59 $0.00
Disclosure

SEC source: 0001437749-24-000654 · rdgdoc.xml · derivative · entry 1

EMALFARB MARK A · CIK 0001328287 · Director · President and CEO · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 200,000

Underlying: Common Stock · 200,000 shares

Expires 2034-01-02

F1 · shares: Annual grant of stock options.

F2 · derivative.exercise_date: This option vests in four equal installments beginning on the first anniversary of the date of grant.

Read SEC document
January 03, 2023 Filed Jan 6, 2023 00:30 UTC DYADIC INTERNATIONAL INC DYAI · Entity 7611 GrantStock Option · Derivative 200,000 $0.00 Strike: $1.38 $0.00
Disclosure

SEC source: 0001437749-23-000582 · rdgdoc.xml · derivative · entry 2

EMALFARB MARK A · CIK 0001328287 · Director · President and CEO · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 200,000

Underlying: Common Stock · 200,000 shares

Expires 2033-01-02

F2 · shares: Annual grant of stock options.

F3 · derivative.exercise_date: This option vests in four equal installments beginning on the first anniversary of the date of grant.

Read SEC document
January 03, 2023 Filed Jan 6, 2023 00:30 UTC DYADIC INTERNATIONAL INC DYAI · Entity 7611 GrantCommon Stock 138,478 $1.38 $191,099.64
Disclosure

SEC source: 0001437749-23-000582 · rdgdoc.xml · nonDerivative · entry 1

EMALFARB MARK A · CIK 0001328287 · Director · President and CEO · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,532,493

F1 · shares: The RSUs were granted pursuant to the Issuer's key employee annual bonus, in lieu of a cash bonus earned for the year ended 2022. The RSUs vested in full upon grant.

Read SEC document
January 03, 2022 Filed Jan 5, 2022 22:32 UTC DYADIC INTERNATIONAL INC DYAI · Entity 7611 GrantStock Option · Derivative 200,000 $0.00 Strike: $4.81 $0.00
Disclosure

SEC source: 0001437749-22-000459 · rdgdoc.xml · derivative · entry 1

EMALFARB MARK A · CIK 0001328287 · Director · President and CEO · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 200,000

Underlying: Common Stock · 200,000 shares

Expires 2032-01-02

F1 · shares: Annual grant of stock options.

F2 · derivative.exercise_date: This option vests in four equal installments beginning on the first anniversary of the date of grant.

Read SEC document
December 23, 2021 Filed Dec 23, 2021 23:29 UTC DYADIC INTERNATIONAL INC DYAI · Entity 7611 Exercise / conversionStock Option · Derivative 150,000 $0.00 Strike: $1.63 $0.00
Disclosure

SEC source: 0001437749-21-029224 · rdgdoc.xml · derivative · entry 5

EMALFARB MARK A · CIK 0001328287 · Director · President and CEO · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 150,000 shares

Expires 2022-01-03

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · shares: Exercise of reporting person's stock options that would other wise expire January 3, 2022.

Read SEC document
December 23, 2021 Filed Dec 23, 2021 23:29 UTC DYADIC INTERNATIONAL INC DYAI · Entity 7611 Exercise / conversionCommon Stock 150,000 $1.63 $244,500.00
Disclosure

SEC source: 0001437749-21-029224 · rdgdoc.xml · nonDerivative · entry 4

EMALFARB MARK A · CIK 0001328287 · Director · President and CEO · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Through MarkA Emalfarb Trust U/A/DTD 10/1/1987

Disclosed balance after: 4,394,015

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
December 23, 2021 Filed Dec 23, 2021 23:29 UTC DYADIC INTERNATIONAL INC DYAI · Entity 7611 SaleCommon Stock 28,767 $4.10 $117,944.70
Disclosure

SEC source: 0001437749-21-029224 · rdgdoc.xml · nonDerivative · entry 3

EMALFARB MARK A · CIK 0001328287 · Director · President and CEO · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Through MarkA. Emalfarb Trust U/A/ DTD 10/1/1987

Disclosed balance after: 4,244,015

F1 · shares: These shares were sold to satisfy exercise price and tax withholding obligations to be funded for options expiring on January 3, 2022. As a result of the option exercises and sale transactions reported on this Form 4, the reporting person's net share ownership increased by 59,098 shares, from 4,334,917 to 4,394,015 shares of Common Stock.

F2 · price: The price reported in Column 4 is a weighted average price. These sold in multiple transactions at prices ranging from $4.46 to $4.28, inclusive, on December 21, 2021, $4.70 to $4.00, inclusive, on December 22, 2021, and $4.15 to $4.05, inclusive, on December 23, 2021. The reporting person undertakes to provide to Dyadic International, Inc., any security holder of Dyadic International, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding number of shares sold at each individual price within the price ranges set forth in this footnote(2) to this Form 4.

Read SEC document
December 22, 2021 Filed Dec 23, 2021 23:29 UTC DYADIC INTERNATIONAL INC DYAI · Entity 7611 SaleCommon Stock 35,649 $4.12 $146,873.88
Disclosure

SEC source: 0001437749-21-029224 · rdgdoc.xml · nonDerivative · entry 2

EMALFARB MARK A · CIK 0001328287 · Director · President and CEO · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Through MarkA Emalfarb Trust U/A/DTD 10/1/1987

Disclosed balance after: 4,272,782

F1 · shares: These shares were sold to satisfy exercise price and tax withholding obligations to be funded for options expiring on January 3, 2022. As a result of the option exercises and sale transactions reported on this Form 4, the reporting person's net share ownership increased by 59,098 shares, from 4,334,917 to 4,394,015 shares of Common Stock.

F2 · price: The price reported in Column 4 is a weighted average price. These sold in multiple transactions at prices ranging from $4.46 to $4.28, inclusive, on December 21, 2021, $4.70 to $4.00, inclusive, on December 22, 2021, and $4.15 to $4.05, inclusive, on December 23, 2021. The reporting person undertakes to provide to Dyadic International, Inc., any security holder of Dyadic International, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding number of shares sold at each individual price within the price ranges set forth in this footnote(2) to this Form 4.

Read SEC document
December 21, 2021 Filed Dec 23, 2021 23:29 UTC DYADIC INTERNATIONAL INC DYAI · Entity 7611 SaleCommon Stock 26,486 $4.33 $114,684.38
Disclosure

SEC source: 0001437749-21-029224 · rdgdoc.xml · nonDerivative · entry 1

EMALFARB MARK A · CIK 0001328287 · Director · President and CEO · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Through Mark A. Emalfarb Trust U/A DTD 10/1/1987

Disclosed balance after: 4,308,431

F1 · shares: These shares were sold to satisfy exercise price and tax withholding obligations to be funded for options expiring on January 3, 2022. As a result of the option exercises and sale transactions reported on this Form 4, the reporting person's net share ownership increased by 59,098 shares, from 4,334,917 to 4,394,015 shares of Common Stock.

F2 · price: The price reported in Column 4 is a weighted average price. These sold in multiple transactions at prices ranging from $4.46 to $4.28, inclusive, on December 21, 2021, $4.70 to $4.00, inclusive, on December 22, 2021, and $4.15 to $4.05, inclusive, on December 23, 2021. The reporting person undertakes to provide to Dyadic International, Inc., any security holder of Dyadic International, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding number of shares sold at each individual price within the price ranges set forth in this footnote(2) to this Form 4.

Read SEC document
June 09, 2021 Filed Jun 9, 2021 21:56 UTC DYADIC INTERNATIONAL INC DYAI · Entity 7611 Exercise / conversionStock Option · Derivative 100,000 $0.00 Strike: $1.67 $0.00
Disclosure

SEC source: 0001437749-21-014443 · rdgdoc.xml · derivative · entry 5

EMALFARB MARK A · CIK 0001328287 · Director · President and CEO · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 100,000 shares

Expires 2021-06-21

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · shares: Exercise of reporting person's stock options that would otherwise expire June 21, 2021.

Read SEC document
June 09, 2021 Filed Jun 9, 2021 21:56 UTC DYADIC INTERNATIONAL INC DYAI · Entity 7611 Exercise / conversionCommon Stock 100,000 $1.67 $167,000.00
Disclosure

SEC source: 0001437749-21-014443 · rdgdoc.xml · nonDerivative · entry 4

EMALFARB MARK A · CIK 0001328287 · Director · President and CEO · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Through Mark A. Emalfarb Trust U/A DTD 10/1/1987

Disclosed balance after: 4,334,917

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
June 09, 2021 Filed Jun 9, 2021 21:56 UTC DYADIC INTERNATIONAL INC DYAI · Entity 7611 SaleCommon Stock 23,000 $3.72 $85,560.00
Disclosure

SEC source: 0001437749-21-014443 · rdgdoc.xml · nonDerivative · entry 3

EMALFARB MARK A · CIK 0001328287 · Director · President and CEO · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Through Mark A. Emalfarb Trust U/A/ DTD 10/1/1987

Disclosed balance after: 4,234,917

F1 · shares: These shares were sold to satisfy exercise price and tax withholding obligations to be funded for options expiring on June 21, 2021. As a result of the option exercises and sale transactions reported on this Form 4 together with the Form 4 filed on June 4, 2021, the reporting person's net share ownership increased by an aggregate of 167,930 shares, from 4,166,987 to 4,334,917 shares of Common Stock.

F2 · price: The price reported in Column 4 is a weighted average price. These sold in multiple transactions at prices ranging from $4.01 to $3.92, inclusive, on June 7, 2021, $3.96 to $3.80, inclusive, on June 8, 2021, and $3.85 to $3.68, inclusive, on June 9, 2021. The reporting person undertakes to provide to Dyadic International, Inc., any security holder of Dyadic International, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of footnote (2) to this Form 4.

Read SEC document
June 08, 2021 Filed Jun 9, 2021 21:56 UTC DYADIC INTERNATIONAL INC DYAI · Entity 7611 SaleCommon Stock 30,000 $3.82 $114,600.00
Disclosure

SEC source: 0001437749-21-014443 · rdgdoc.xml · nonDerivative · entry 2

EMALFARB MARK A · CIK 0001328287 · Director · President and CEO · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Through Mark A Emalfarb Trust U/A/DTD 10/1/1987

Disclosed balance after: 4,257,917

F1 · shares: These shares were sold to satisfy exercise price and tax withholding obligations to be funded for options expiring on June 21, 2021. As a result of the option exercises and sale transactions reported on this Form 4 together with the Form 4 filed on June 4, 2021, the reporting person's net share ownership increased by an aggregate of 167,930 shares, from 4,166,987 to 4,334,917 shares of Common Stock.

F2 · price: The price reported in Column 4 is a weighted average price. These sold in multiple transactions at prices ranging from $4.01 to $3.92, inclusive, on June 7, 2021, $3.96 to $3.80, inclusive, on June 8, 2021, and $3.85 to $3.68, inclusive, on June 9, 2021. The reporting person undertakes to provide to Dyadic International, Inc., any security holder of Dyadic International, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of footnote (2) to this Form 4.

Read SEC document
June 07, 2021 Filed Jun 9, 2021 21:56 UTC DYADIC INTERNATIONAL INC DYAI · Entity 7611 SaleCommon Stock 44,000 $3.95 $173,800.00
Disclosure

SEC source: 0001437749-21-014443 · rdgdoc.xml · nonDerivative · entry 1

EMALFARB MARK A · CIK 0001328287 · Director · President and CEO · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Through Mark A. Emalfarb Trust U/A DTD 10/1/1987

Disclosed balance after: 4,287,917

F1 · shares: These shares were sold to satisfy exercise price and tax withholding obligations to be funded for options expiring on June 21, 2021. As a result of the option exercises and sale transactions reported on this Form 4 together with the Form 4 filed on June 4, 2021, the reporting person's net share ownership increased by an aggregate of 167,930 shares, from 4,166,987 to 4,334,917 shares of Common Stock.

F2 · price: The price reported in Column 4 is a weighted average price. These sold in multiple transactions at prices ranging from $4.01 to $3.92, inclusive, on June 7, 2021, $3.96 to $3.80, inclusive, on June 8, 2021, and $3.85 to $3.68, inclusive, on June 9, 2021. The reporting person undertakes to provide to Dyadic International, Inc., any security holder of Dyadic International, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of footnote (2) to this Form 4.

Read SEC document
June 04, 2021 Filed Jun 5, 2021 00:25 UTC DYADIC INTERNATIONAL INC DYAI · Entity 7611 Exercise / conversionStock Option · Derivative 400,000 $0.00 Strike: $1.67 $0.00
Disclosure

SEC source: 0001437749-21-014193 · rdgdoc.xml · derivative · entry 5

EMALFARB MARK A · CIK 0001328287 · Director · President and CEO · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 400,000 shares

Expires 2021-06-21

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · shares: Exercise of reporting person's stock options that would otherwise expire June 21, 2021.

Read SEC document
June 04, 2021 Filed Jun 5, 2021 00:25 UTC DYADIC INTERNATIONAL INC DYAI · Entity 7611 Exercise / conversionCommon Stock 400,000 $1.67 $668,000.00
Disclosure

SEC source: 0001437749-21-014193 · rdgdoc.xml · nonDerivative · entry 4

EMALFARB MARK A · CIK 0001328287 · Director · President and CEO · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Through Mark A. Emalfarb Trust U/A DTD 10/1/1987

Disclosed balance after: 4,331,917

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

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June 04, 2021 Filed Jun 5, 2021 00:25 UTC DYADIC INTERNATIONAL INC DYAI · Entity 7611 SaleCommon Stock 132,000 $3.85 $508,200.00
Disclosure

SEC source: 0001437749-21-014193 · rdgdoc.xml · nonDerivative · entry 3

EMALFARB MARK A · CIK 0001328287 · Director · President and CEO · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Through Mark A Emalfarb Trust U/A/ DTD 10/1/1987

Disclosed balance after: 3,931,917

F1 · shares: These shares were sold to satisfy exercise price and tax withholding obligations to be funded for options expiring on June 21, 2021. As a result of the option exercises and sale transactions reported on this Form 4, the reporting person's net share ownership increased by 164,930 shares, from 4,166,987 to 4,331,917 shares of Common Stock.

F2 · price: The price reported in Column 4 is a weighted average price. These sold in multiple transactions at prices ranging from $3.82 to $3.65, inclusive, on June 2, 2021, $3.70 to $3.60, inclusive, on June 3, 2021, and $4.00 to $3.70, inclusive, on June 4, 2021. The reporting person undertakes to provide to Dyadic International, Inc., any security holder of Dyadic International, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of footnote (2) to this Form 4.

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June 03, 2021 Filed Jun 5, 2021 00:25 UTC DYADIC INTERNATIONAL INC DYAI · Entity 7611 SaleCommon Stock 26,721 $3.61 $96,462.81
Disclosure

SEC source: 0001437749-21-014193 · rdgdoc.xml · nonDerivative · entry 2

EMALFARB MARK A · CIK 0001328287 · Director · President and CEO · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Through Mark A Emalfarb Trust U/A DTD 10/1/1987

Disclosed balance after: 4,063,917

F1 · shares: These shares were sold to satisfy exercise price and tax withholding obligations to be funded for options expiring on June 21, 2021. As a result of the option exercises and sale transactions reported on this Form 4, the reporting person's net share ownership increased by 164,930 shares, from 4,166,987 to 4,331,917 shares of Common Stock.

F2 · price: The price reported in Column 4 is a weighted average price. These sold in multiple transactions at prices ranging from $3.82 to $3.65, inclusive, on June 2, 2021, $3.70 to $3.60, inclusive, on June 3, 2021, and $4.00 to $3.70, inclusive, on June 4, 2021. The reporting person undertakes to provide to Dyadic International, Inc., any security holder of Dyadic International, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of footnote (2) to this Form 4.

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June 02, 2021 Filed Jun 5, 2021 00:25 UTC DYADIC INTERNATIONAL INC DYAI · Entity 7611 SaleCommon Stock 76,349 $3.74 $285,545.26
Disclosure

SEC source: 0001437749-21-014193 · rdgdoc.xml · nonDerivative · entry 1

EMALFARB MARK A · CIK 0001328287 · Director · President and CEO · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Through Mark A. Emalfarb Trust U/A DTD 10/1/1987

Disclosed balance after: 4,090,638

F1 · shares: These shares were sold to satisfy exercise price and tax withholding obligations to be funded for options expiring on June 21, 2021. As a result of the option exercises and sale transactions reported on this Form 4, the reporting person's net share ownership increased by 164,930 shares, from 4,166,987 to 4,331,917 shares of Common Stock.

F2 · price: The price reported in Column 4 is a weighted average price. These sold in multiple transactions at prices ranging from $3.82 to $3.65, inclusive, on June 2, 2021, $3.70 to $3.60, inclusive, on June 3, 2021, and $4.00 to $3.70, inclusive, on June 4, 2021. The reporting person undertakes to provide to Dyadic International, Inc., any security holder of Dyadic International, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of footnote (2) to this Form 4.

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January 04, 2021 Filed Jan 6, 2021 22:21 UTC DYADIC INTERNATIONAL INC DYAI · Entity 7611 GrantStock Option · Derivative 200,000 $0.00 Strike: $5.16 $0.00
Disclosure

SEC source: 0001437749-21-000289 · rdgdoc.xml · derivative · entry 1

EMALFARB MARK A · CIK 0001328287 · Director · President and CEO · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 200,000

Underlying: Common Stock · 200,000 shares

Expires 2031-01-03

F1 · shares: Annual grant of stock options.

F2 · derivative.exercise_date: This option vests in four equal installments beginning on the first anniversary of the date of grant.

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January 02, 2020 Filed Jan 4, 2020 01:47 UTC DYADIC INTERNATIONAL INC DYAI · Entity 7611 GrantStock Option · Derivative 300,000 $0.00 Strike: $5.27 $0.00
Disclosure

SEC source: 0001213809-20-000003 · wf-form4_157810245828917.xml · derivative · entry 1

EMALFARB MARK A · CIK 0001328287 · Director · President and CEO · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 300,000

Underlying: Common Stock · 300,000 shares

Expires 2030-01-01

F1 · shares: Annual grant of stock options.

F2 · derivative.exercise_date: This option vests in four equal installments beginning on the first anniversary of the date of grant.

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April 12, 2019 Filed Apr 12, 2019 20:16 UTC DYADIC INTERNATIONAL INC DYAI · Entity 7611 Exercise / conversionStock Option · Derivative 37,500 $0.00 Strike: $1.71 $0.00
Disclosure

SEC source: 0001213809-19-000011 · wf-form4_155510018866162.xml · derivative · entry 4

EMALFARB MARK A · CIK 0001328287 · Director · President and CEO · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 37,500 shares

Expires 2019-04-13

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: Exercise of reporting person's stock options that would otherwise expire April 13, 2019.

F2 · derivative.exercise_date: All such options have fully vested.

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April 12, 2019 Filed Apr 12, 2019 20:16 UTC DYADIC INTERNATIONAL INC DYAI · Entity 7611 Exercise / conversionStock Option · Derivative 12,500 $0.00 Strike: $1.71 $0.00
Disclosure

SEC source: 0001213809-19-000011 · wf-form4_155510018866162.xml · derivative · entry 3

EMALFARB MARK A · CIK 0001328287 · Director · President and CEO · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 12,500 shares

Expires 2019-04-13

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: Exercise of reporting person's stock options that would otherwise expire April 13, 2019.

F2 · derivative.exercise_date: All such options have fully vested.

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April 12, 2019 Filed Apr 12, 2019 20:16 UTC DYADIC INTERNATIONAL INC DYAI · Entity 7611 Exercise / conversionCommon Stock 37,500 $1.71 $64,125.00
Disclosure

SEC source: 0001213809-19-000011 · wf-form4_155510018866162.xml · nonDerivative · entry 2

EMALFARB MARK A · CIK 0001328287 · Director · President and CEO · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Through Mark A. Emalfarb Trust U/A DTD 10/1/1987

Disclosed balance after: 4,166,987

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: Exercise of reporting person's stock options that would otherwise expire April 13, 2019.

Read SEC document
April 12, 2019 Filed Apr 12, 2019 20:16 UTC DYADIC INTERNATIONAL INC DYAI · Entity 7611 Exercise / conversionCommon Stock 12,500 $1.71 $21,375.00
Disclosure

SEC source: 0001213809-19-000011 · wf-form4_155510018866162.xml · nonDerivative · entry 1

EMALFARB MARK A · CIK 0001328287 · Director · President and CEO · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Through Mark A. Emalfarb Trust U/A DTD 10/1/1987

Disclosed balance after: 4,129,487

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: Exercise of reporting person's stock options that would otherwise expire April 13, 2019.

Read SEC document

Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.