ExoZymes grants director option for 10,000 shares

Quarterly vesting is conditioned on continued service and runs through September 30, 2029, while the option expires October 1, 2033.

Rhea-AI Filing Summary

ExoZymes Inc. (EXOZ) granted director and 10% owner Anthony Digiandomenico a stock option covering 10,000 common shares on October 1, 2026. The option has a $6.28 exercise price and vests in 12 quarterly installments—11 installments of 833 shares and a final installment of 837 shares—beginning December 31, 2026 and ending September 30, 2029, subject to his continued service. It expires October 1, 2033.

Separately, MDB Capital Holdings, LLC held 3,808,476 common shares as of October 1, 2026. Digiandomenico has voting and dispositive authority over those shares and disclaims any interest in them except to the extent of his pecuniary interests in the LLC.

Insider Trade Summary

Grant/Award: 10,000 shares

Grant/Award 2 txns

Insider DIGIANDOMENICO ANTHONY

Role Director, 10% Owner

Type	Security	Shares	Price	Value
Grant/Award	Stock Option (right to buy) F1	10,000	$0.00	$0.00
holding	Common Stock F2	--	--	--

Holdings After Transaction: Stock Option (right to buy) — 10,000 contracts (Direct); Common Stock — 3,808,476 shares (Indirect, See Footnote)

Footnotes (2)

1. F1. The option vests in twelve (12) quarterly installments, consisting of eleven (11) installments of 833 shares and a final installment of 837 shares, beginning on 12/31/2026 and ending on 09/30/2029, subject to the reporting person's continued service with the issuer. The option expires on 10/01/2033.
2. F2. Shares are held by MDB Capital Holdings, LLC, over which the Reporting Person has voting and dispositive authority. The Reporting Person disclaims any interest in the shares except to the extent of his pecuniary interests in MDB Capital Holdings, LLC.

Key Figures

Stock option shares: 10,000 shares Exercise price: $6.28 per share Shares held by MDB Capital Holdings, LLC: 3,808,476 shares +3 more

6 metrics

Stock option shares 10,000 shares Option award dated October 1, 2026

Exercise price $6.28 per share Stock option award

Shares held by MDB Capital Holdings, LLC 3,808,476 shares As of October 1, 2026; Digiandomenico has voting and dispositive authority

Vesting installments 12 quarterly installments Beginning December 31, 2026

Shares in each of the first 11 installments 833 shares Option vesting schedule

Final vesting installment 837 shares Scheduled for September 30, 2029

Key Terms

exercise price, quarterly installments, voting and dispositive authority, pecuniary interests

4 terms

exercise price financial

"option has a $6.28 exercise price"

The exercise price is the fixed amount at which you can buy or sell an asset, like a stock, when using an options contract. It matters because it helps determine whether exercising the option will be profitable or not, depending on the current market price. Think of it as the set price you agree on today to buy or sell later.

quarterly installments technical

"option vests in twelve (12) quarterly installments"

voting and dispositive authority technical

"has voting and dispositive authority"

pecuniary interests financial

"except to the extent of his pecuniary interests"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What are the terms of Anthony Digiandomenico's EXOZ stock option?

Anthony Digiandomenico's option covers 10,000 common shares and has a $6.28 exercise price. It vests in 12 quarterly installments beginning December 31, 2026, with the final installment scheduled for September 30, 2029, subject to his continued service, and expires October 1, 2033.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 10/19/2026 - 07:47 PM EDT Accepted by SEC EDGAR 10/19/2026 - 07:47 PM EDT Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

DIGIANDOMENICO ANTHONY

(Last) (First) (Middle)

C/O 14133 MIDWAY ROAD, SUITE G-150

(Street)

ADDISON TEXAS 75001

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
EXOZYMES INC. [ EXOZ ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
10/01/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock								3,808,476	I	See Footnote(2)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Stock Option (right to buy)	$6.28	10/01/2026		A		10,000		(1)	10/01/2033	Common Stock	10,000	$0.00	10,000	D

Explanation of Responses:

1. The option vests in twelve (12) quarterly installments, consisting of eleven (11) installments of 833 shares and a final installment of 837 shares, beginning on 12/31/2026 and ending on 09/30/2029, subject to the reporting person's continued service with the issuer. The option expires on 10/01/2033.

2. Shares are held by MDB Capital Holdings, LLC, over which the Reporting Person has voting and dispositive authority. The Reporting Person disclaims any interest in the shares except to the extent of his pecuniary interests in MDB Capital Holdings, LLC.

	/s/ Anthony DiGiandomenico	10/19/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)