RenovoRx CFO buys 25,000 shares in open market

RenovoRx, Inc. Chief Financial Officer Mark Voll reported an open-market purchase of 25,000 shares of Common Stock at $0.7876 per share on May 19, 2026.

Rhea-AI Filing Summary

RenovoRx, Inc. Chief Financial Officer Mark Voll reported an open-market purchase of 25,000 shares of Common Stock at $0.7876 per share on May 19, 2026. Following this purchase, he directly holds 142,380 shares and indirectly holds 97,200 shares through the Voll Family Trust.

A prior grant of 58,953 restricted stock units (RSUs) for his future CFO service remains partly unvested. As of April 30, 2026, 8,823 RSUs had vested and 50,130 RSUs were still unvested.

Insider Trade Summary

Net Buyer: 25,000 shares

Net Buy 2 txns

Insider VOLL MARK

Role Chief Financial Officer

Bought 25,000 shs ($20K)

Type	Security	Shares	Price	Value
Purchase	Common Stock	25,000	$0.7876	$20K
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 142,380 shares (Direct); Common Stock — 97,200 shares (Indirect, Voll Family Trust DTD 6/23/2010 Mark Voll TTEE)

Footnotes (2)

1. F1. Reflects open market purchases of the Issuer's securities.
2. F2. A grant of 58,953 restricted stock units ("RSUs") was previously reported for the Reporting Person's future service as the Chief Financial Officer of the Issuer, subject to monthly vesting with the RSUs valued based on the closing price on the last trading day of the month in which the services were performed. As of April 30, 2026, 8,823 of such RSUs had vested, leaving a remaining balance of 50,130 unvested RSUs.

Key Figures

Shares purchased: 25,000 shares Purchase price: $0.7876 per share Direct holdings after transaction: 142,380 shares +4 more

7 metrics

Shares purchased 25,000 shares Open-market Common Stock purchase on May 19, 2026

Purchase price $0.7876 per share Price for 25,000 Common Stock shares bought May 19, 2026

Direct holdings after transaction 142,380 shares Common Stock directly owned after May 19, 2026 purchase

Indirect holdings 97,200 shares Common Stock held via Voll Family Trust

RSUs granted 58,953 RSUs Restricted stock units granted for future CFO service

Vested RSUs 8,823 RSUs RSUs vested as of April 30, 2026

Unvested RSUs 50,130 RSUs Remaining unvested RSUs as of April 30, 2026

Key Terms

open market purchases, restricted stock units ("RSUs"), monthly vesting, Voll Family Trust

4 terms

open market purchases financial

"Reflects open market purchases of the Issuer's securities."

Open market purchases are buys of a company’s shares (or other securities) made on public exchanges at prevailing market prices rather than through private deals. For investors this matters because when a company buys back its own stock it reduces the number of shares available, which can boost per-share earnings and often signals management’s confidence; it also affects supply, demand and short-term liquidity much like someone quietly buying up items from a crowded marketplace.

restricted stock units ("RSUs") financial

"A grant of 58,953 restricted stock units ("RSUs") was previously reported"

Restricted stock units (RSUs) are a company promise to give an employee shares of stock (or cash equivalent) in the future, but only after certain conditions—usually staying with the company for a set time or hitting performance goals—are met. Investors watch RSUs because when they vest they increase the number of shares outstanding and can lead insiders to sell shares, affecting share price, company dilution and the true cost of employee pay.

monthly vesting financial

"subject to monthly vesting with the RSUs valued based on the closing price"

Voll Family Trust financial

"Voll Family Trust DTD 6/23/2010 Mark Voll TTEE"

FAQ

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

What insider transaction did RenovoRx (RNXT) report for CFO Mark Voll?

RenovoRx reported that CFO Mark Voll bought 25,000 shares of Common Stock in the open market. The purchase occurred on May 19, 2026 at a price of $0.7876 per share, indicating a direct increase in his share ownership.

How many RenovoRx (RNXT) shares does CFO Mark Voll own after the transaction?

After the May 19, 2026 purchase, CFO Mark Voll directly owns 142,380 RenovoRx Common Stock shares. He also indirectly owns 97,200 shares held by the Voll Family Trust, giving him substantial combined exposure according to this filing’s reported holdings.

At what price did the RenovoRx (RNXT) CFO buy his new shares?

The RenovoRx CFO bought 25,000 Common Stock shares at $0.7876 per share. This price reflects an open-market purchase, as noted in the filing’s footnote, rather than a grant or option exercise related to equity compensation awards.

What RSU awards does the RenovoRx (RNXT) CFO have outstanding?

CFO Mark Voll was granted 58,953 restricted stock units for future service. As of April 30, 2026, 8,823 RSUs had vested, leaving 50,130 unvested RSUs, which may convert into shares over time as they continue to vest monthly.

How are some RenovoRx (RNXT) shares held for CFO Mark Voll?

In addition to directly held shares, 97,200 RenovoRx shares are held indirectly for CFO Mark Voll. These are owned through the Voll Family Trust dated June 23, 2010, with Mark Voll listed as trustee, according to the ownership details.

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

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Accepted by SEC EDGAR 05/21/2026 - 07:00 AM 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^*

VOLL MARK

(Last) (First) (Middle)

C/O RENOVORX, INC.

2570 W EL CAMINO REAL, SUITE 640

(Street)

MOUNTAIN VIEW CALIFORNIA 94040

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
RenovoRx, Inc. [ RNXT ]

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/19/2026

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	05/19/2026		P		25,000(1)	A	$0.7876	142,380(2)	D
Common Stock								97,200	I	Voll Family Trust DTD 6/23/2010 Mark Voll TTEE

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

Explanation of Responses:

1. Reflects open market purchases of the Issuer's securities.

2. A grant of 58,953 restricted stock units ("RSUs") was previously reported for the Reporting Person's future service as the Chief Financial Officer of the Issuer, subject to monthly vesting with the RSUs valued based on the closing price on the last trading day of the month in which the services were performed. As of April 30, 2026, 8,823 of such RSUs had vested, leaving a remaining balance of 50,130 unvested RSUs.

	/s/ Mark Voll	05/21/2026
	** 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)