Thomas Kosasa (ONMD) invests $250,000 and adds 268,817 OneMedNet shares

Rhea-AI Filing Summary

OneMedNet Corp director and 10% owner Thomas Kosasa bought additional common stock. On May 18, 2026, he acquired 268,817 shares of OneMedNet common stock at a reported price of $0.93 per share, increasing his direct holdings to 16,930,144 shares.

The purchase was made through a $250,000 investment in OneMedNet under a subscription agreement, with the shares valued at the volume-weighted average price for the 10 trading days immediately before the purchase date.

Insider Trade Summary

Net Buyer: 268,817 shares ($250,000)

Net Buy 1 txn

Insider Kosasa Thomas

Role null

Bought 268,817 shs ($250K)

Type	Security	Shares	Price	Value
Purchase	Common Stock	268,817	$0.93	$250K

Holdings After Transaction: Common Stock — 16,930,144 shares (Direct, null)

Footnotes (1)

1. On May 18, 2026, the issuer entered into a subscription agreement with the reporting person for a $250,000 investment in the issuer. The shares were valued at the volume-weighted average price (VWAP) of the issuer for the 10 trading days immediately prior to the purchase date.

Key Figures

Shares purchased: 268,817 shares Purchase price: $0.93 per share Post-transaction holdings: 16,930,144 shares +1 more

4 metrics

Shares purchased 268,817 shares Common Stock bought on May 18, 2026

Purchase price $0.93 per share Reported transaction price for the May 18, 2026 buy

Post-transaction holdings 16,930,144 shares Total common shares directly owned after transaction

Investment amount $250,000 Subscription agreement investment on May 18, 2026

Key Terms

subscription agreement, volume-weighted average price (VWAP), open-market purchase

3 terms

subscription agreement financial

"the issuer entered into a subscription agreement with the reporting person for a $250,000 investment"

A subscription agreement is a legal contract in which an investor agrees to buy a specific number of a company’s shares or other securities under set terms, including price, payment method and conditions for closing the sale. It matters to investors because it legally locks in their purchase and the company’s obligations, determines ownership percentage and any investor rights, and can include conditions or promises that affect future control or returns—like signing a detailed purchase order for equity.

volume-weighted average price (VWAP) financial

"The shares were valued at the volume-weighted average price (VWAP) of the issuer"

Volume-weighted average price (VWAP) is the average price of a security over a trading period where each trade’s price is weighted by how many shares were traded, so larger trades pull the average more than tiny ones. Investors and traders use VWAP as a benchmark to judge whether a trade was executed at a favorable price—similar to checking whether you paid more or less than the typical price when most people were buying or selling.

open-market purchase financial

"transaction_action: open-market purchase"

An open-market purchase is when an investor or a company buys shares on a public stock exchange at the going market price, rather than through a private deal. It matters to investors because these purchases change how many shares are available, can push the stock price up or signal confidence from large buyers, and often affect per-share metrics like earnings—think of it like someone buying lots of apples off a grocery shelf, reducing supply and potentially raising the price.

Form 4 Insider Transactions: What Each Field Means →

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^*

Kosasa Thomas

(Last) (First) (Middle)

6385 OLD SHADY OAK ROAD, SUITE 250

(Street)

EDEN PRAIRIE MINNESOTA 55344

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
OneMedNet Corp [ ONMD ]

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)
05/18/2026

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	05/18/2026		P(1)		268,817	A	$0.93(2)	16,930,144	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

Explanation of Responses:

1. On May 18, 2026, the issuer entered into a subscription agreement with the reporting person for a $250,000 investment in the issuer.

2. The shares were valued at the volume-weighted average price (VWAP) of the issuer for the 10 trading days immediately prior to the purchase date.

	/s/ Robert Golden, Attorney-in-Fact	05/20/2026
	** 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)

FAQ

What insider transaction did OneMedNet (ONMD) report for Thomas Kosasa?

OneMedNet reported that director and 10% owner Thomas Kosasa bought 268,817 shares of common stock. The transaction occurred on May 18, 2026 and was reported as an open-market style purchase at $0.93 per share, increasing his direct ownership.

How many OneMedNet (ONMD) shares does Thomas Kosasa own after this Form 4?

After the reported purchase, Thomas Kosasa directly owns 16,930,144 shares of OneMedNet common stock. This figure reflects his position following the acquisition of 268,817 shares on May 18, 2026, as disclosed in the Form 4 filing.

What was the dollar amount of Thomas Kosasa’s investment in OneMedNet (ONMD)?

The filing states that Thomas Kosasa entered into a subscription agreement for a $250,000 investment in OneMedNet. The number of shares issued, 268,817, was based on the volume-weighted average price over the 10 trading days before the purchase date.

At what price were the new OneMedNet (ONMD) shares valued for Thomas Kosasa?

The newly acquired shares were valued at $0.93 per share. The Form 4 notes that this value reflects the volume-weighted average price of OneMedNet’s stock over the 10 trading days immediately preceding the May 18, 2026 purchase date under the subscription agreement.

How was the price for Thomas Kosasa’s OneMedNet (ONMD) shares determined?

The price was determined using the volume-weighted average price (VWAP) of OneMedNet’s stock for the 10 trading days before the purchase. This VWAP-based method set the per-share value used to convert Kosasa’s $250,000 investment into 268,817 shares.