CODX insider Richard Abbott logs RSU vest and tax-driven sale

Rhea-AI Filing Summary

Co-Diagnostics, Inc. (CODX) president Richard David Abbott reported equity compensation activity in company stock. On November 23, 2025, 56,667 shares of common stock were acquired at $0.00 per share upon vesting of restricted stock units, increasing his directly held common stock to 83,402 shares before subsequent sales.

On the same date, 17,200 shares of common stock were sold at $0.35 per share to cover tax withholding obligations tied to the RSU vesting, a sale described as mandated under the company’s equity incentive plans rather than a discretionary trade. After these transactions, Abbott directly owned 66,202 shares of CODX common stock and 293,771 restricted stock units, which stem from prior awards of 120,000 RSUs granted on April 26, 2024 and 220,000 RSUs granted on August 13, 2025 that vest in six equal installments every six months.

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

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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^*

Abbott Richard David

(Last) (First) (Middle)

C/O CO-DIAGNOSTICS, INC.

2401 S. FOOTHILL DRIVE, SUITE D

(Street)

SALT LAKE CITY UT 84109

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Co-Diagnostics, Inc. [ CODX ]

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

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

3. Date of Earliest Transaction (Month/Day/Year)
11/23/2025

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

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

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

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	11/23/2025		A		56,667(1)	A	$0.00	83,402	D
Common Stock	11/23/2025		D		17,200(2)	D	$0.35	66,202	D

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
Restricted Stock Unit	$0.00	11/23/2025		M			56,667	(1)	(1)	Common Stock	350,438	$0.00	293,771	D

Explanation of Responses:

1. Included in 120,000 restricted stock units awarded to the Reporting Person on April 26, 2024, pursuant to the Co-Diagnostics, Inc. 2015 Long Term Incentive Plan, and vest in 6 equal installments every 6 months commencing on November 23, 2024. Included in 220,000 restricted stock units awarded to the Reporting Person on August 13, 2025, pursuant to the Co-Diagnostics, Inc. 2015 Long Term Incentive Plan, and vest in 6 equal installments every 6 months commencing on November 23, 2025.

2. Represents the number of shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of RSU's. This sale is mandated by the Issuer's election, under its equity incentive plans to require the satisfaction of tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary trade by the Reporting Person.

Remarks:

	Richard David Abbott	11/23/2025
	** 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).
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FAQ

What insider transaction did CODX president Richard David Abbott report?

Richard David Abbott, president of Co-Diagnostics, Inc. (CODX), reported the vesting of restricted stock units into 56,667 shares of common stock and a related sale of shares on November 23, 2025.

How many CODX shares did the insider acquire and at what price?

Abbott acquired 56,667 shares of CODX common stock at a price of $0.00 per share upon the vesting of restricted stock units.

How many CODX shares were sold and why were they sold?

He sold 17,200 shares of CODX common stock at $0.35 per share. The filing states this sale was required to cover tax withholding obligations from RSU vesting under the company’s equity incentive plans and was not a discretionary trade.

How many CODX shares does Richard David Abbott own after these transactions?

After the reported transactions, Abbott directly owned 66,202 shares of CODX common stock.

How many restricted stock units (RSUs) in CODX does the insider still hold?

Following the activity, Abbott beneficially owned 293,771 restricted stock units tied to CODX common stock.

What are the terms of Richard David Abbott’s CODX RSU awards mentioned in the filing?

The filing notes RSU awards of 120,000 units granted on April 26, 2024 and 220,000 units granted on August 13, 2025, each vesting in six equal installments every six months starting on November 23, 2024 and November 23, 2025, respectively.

Is the reported CODX share sale by the president part of a trading plan?

The form allows a box to indicate trades under a Rule 10b5-1 plan, but the key explanation here emphasizes that the 17,200-share sale was mandated to cover tax withholding under CODX’s equity incentive plans.