Co-Diagnostics president vests RSUs, disposes 17,200 shares

Co-Diagnostics, Inc. reports that President Richard David Abbott exercised 56,667 restricted stock units into common stock and, on the same date, disposed of 17,200 shares back to the issuer at $0.35 per share.

Rhea-AI Filing Summary

Co-Diagnostics, Inc. reports that President Richard David Abbott exercised 56,667 restricted stock units into common stock and, on the same date, disposed of 17,200 shares back to the issuer at $0.35 per share. After these transactions, he holds 66,202 common shares directly. Footnotes note prior RSU awards of 120,000 and 220,000 units that vest in six semiannual installments and explain that certain share sales were mandated “sell to cover” transactions for tax withholding, rather than discretionary trades.

Insider Trade Summary

56,667 shares exercised/converted

Exercise 3 txns

Insider Abbott Richard David

Role President

Type	Security	Shares	Price	Value
Exercise	Restricted Stock Unit	56,667	$0.00	$0.00
Grant/Award	Common Stock	56,667	$0.00	$0.00
Disposition	Common Stock	17,200	$0.35	$6K

Holdings After Transaction: Restricted Stock Unit — 293,771 contracts (Direct); Common Stock — 66,202 shares (Direct)

Footnotes (2)

1. F1. 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. F2. 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.

Key Figures

RSUs exercised: 56,667 units Shares disposed to issuer: 17,200 shares Disposition price: $0.35 per share +3 more

6 metrics

RSUs exercised 56,667 units Restricted Stock Units converted into common stock on 2025-11-23

Shares disposed to issuer 17,200 shares Common stock disposed to issuer at $0.35 per share on 2025-11-23

Disposition price $0.35 per share Price reported for the 17,200-share disposition to the issuer

Post-transaction holding 66,202 shares Direct common stock held by Richard David Abbott after the reported transactions

RSU award (April 2024) 120,000 units Restricted stock units awarded on April 26, 2024, vesting in six semiannual installments

RSU award (August 2025) 220,000 units Restricted stock units awarded on August 13, 2025, vesting in six semiannual installments

Key Terms

Restricted Stock Unit, sell to cover, Long Term Incentive Plan, tax withholding obligations

4 terms

Restricted Stock Unit financial

"Included in 120,000 restricted stock units awarded to the Reporting Person"

A restricted stock unit is a promise from a company to give an employee shares of stock after certain conditions are met, like staying with the company for a set amount of time. It’s like earning a bonus that turns into company stock once you’ve proven your commitment, making it a way to motivate and reward employees.

sell to cover financial

"to be funded by a "sell to cover" transaction and does not represent"

Sell to cover is when a person who receives company stock through options or awards sells just enough shares immediately to pay required taxes, exercise costs, or fees, keeping the rest. Think of it like cashing part of a bonus to cover the tax bill so you can keep the remainder. For investors, it can create predictable small selling pressure and slightly change the number of shares actually held by insiders without increasing long‑term dilution.

Long Term Incentive Plan financial

"pursuant to the Co-Diagnostics, Inc. 2015 Long Term Incentive Plan"

A long term incentive plan is a company program that awards executives and key employees bonuses—often in stock, options, or cash—only if the business meets multi-year performance goals. It links management pay to company results—like tying a coach’s bonus to a team’s multi-season record—so investors monitor it for how leaders are motivated, potential share dilution, and signals about the company’s long-term priorities.

tax withholding obligations financial

"sold by the Reporting Person to cover tax withholding obligations in connection"

FAQ

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

What insider transactions did Co-Diagnostics (CODX) report for President Richard David Abbott?

Co-Diagnostics reported that President Richard David Abbott exercised 56,667 restricted stock units into common stock and disposed of 17,200 shares back to the issuer at $0.35 per share on November 23, 2025, in connection with his equity awards.

How many Co-Diagnostics (CODX) shares does Richard David Abbott hold after these Form 4 transactions?

After the reported transactions, Richard David Abbott directly holds 66,202 shares of Co-Diagnostics common stock. This figure reflects his post-transaction ownership position as stated in the filing’s canonical holdings section for his direct common stock stake.

What RSU activity involving Co-Diagnostics (CODX) was disclosed for Richard David Abbott?

The filing shows that Richard David Abbott exercised 56,667 restricted stock units into common stock. Footnotes also reference prior RSU awards of 120,000 and 220,000 units that vest in six equal installments every six months under Co-Diagnostics’ long-term incentive plan.

Why were some Co-Diagnostics (CODX) shares sold in connection with Abbott’s RSU vesting?

A footnote explains that certain shares represent amounts sold to cover tax withholding obligations tied to RSU vesting. The sale was mandated by the issuer’s equity incentive plan as a “sell to cover” transaction, rather than a discretionary trade by Abbott.

What price was involved in Richard David Abbott’s Co-Diagnostics (CODX) share disposition?

The Form 4 reports that Abbott disposed of 17,200 Co-Diagnostics shares back to the issuer at a price of $0.35 per share. This disposition occurred on November 23, 2025, in connection with his broader RSU-related equity transactions.

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

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Accepted by SEC EDGAR 11/24/2025 - 05:31 PM 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^*

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).
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.