Ten percent owner HRT Financial LP exits Aditxt (ADTX) stake with 3.13M-share sale

Rhea-AI Filing Summary

HRT Financial LP, a ten percent owner of Aditxt, Inc. (ADTX), reported an open-market sale of 3,132,480 Class A Shares at $0.013 per share. After this transaction on June 16, 2026, the filing shows HRT Financial LP holding 0 Class A Shares directly.

Positive

• None.

Negative

• Large shareholder fully exited reported position: HRT Financial LP, a ten percent owner, sold 3,132,480 Class A Shares at $0.013 and reported holding 0 shares afterward, indicating a complete disposal of its disclosed stake.

Insights

Equity markets analyst

Large shareholder exited its reported ADTX position in a single open-market sale.

HRT Financial LP, identified as a ten percent owner of Aditxt, Inc., sold 3,132,480 Class A Shares in an open-market transaction at $0.013 per share. Following the sale, the Form 4 reports zero Class A Shares held directly.

This is a strong signal event because it reflects a complete exit of the reported holding by a large shareholder, rather than routine option exercises or tax withholding. The filing does not reference any pre-arranged trading plan, so the timing appears discretionary based on the available data.

The overall impact depends on how this position compares to Aditxt’s total shares outstanding and the company’s future disclosures. Subsequent company and insider filings may provide additional context on ownership changes and any new positions established after June 16, 2026.

Insider Trade Summary

Net Seller: 3,132,480 shares ($40,722)

Net Sell 1 txn

Insider HRT FINANCIAL LP

Role null

Sold 3,132,480 shs ($41K)

Type	Security	Shares	Price	Value
Sale	Class A Shares	3,132,480	$0.013	$41K

Holdings After Transaction: Class A Shares — 0 shares (Direct, null)

Footnotes (1)

Key Figures

Shares sold: 3,132,480 shares Sale price: $0.013 per share Shares after transaction: 0 shares +3 more

6 metrics

Shares sold 3,132,480 shares Open-market sale of Aditxt Class A Shares

Sale price $0.013 per share Price for Aditxt Class A Shares sold

Shares after transaction 0 shares Total Class A Shares held by HRT Financial LP following sale

Net share change -3,132,480 shares Net buy/sell direction from transaction summary

Transaction date June 16, 2026 Date of open-market sale

Insider role Ten percent owner Status of HRT Financial LP relative to Aditxt

Key Terms

open-market sale, Form 4, ten percent owner, non-derivative

4 terms

open-market sale financial

"reported an open-market sale of 3,132,480 Class A Shares at $0.013 per share"

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

Form 4 regulatory

"was disclosed on a Form 4 as a non-derivative sale of common equity"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

ten percent owner regulatory

"HRT Financial LP, a ten percent owner of Aditxt, Inc."

non-derivative financial

"disposing of 3,132,480 non-derivative Class A Shares of Aditxt"

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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

X

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^*

HRT FINANCIAL LP

(Last) (First) (Middle)

3 WORLD TRADE CENTER, 175 GREENWICH STRE

76TH FLOOR

(Street)

NEW YORK NEW YORK 10007

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Aditxt, Inc. [ ADTX ]

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/04/2026

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
Class A Shares	06/16/2026		S		3,132,480	D	$0.013	0	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:

	Adam Nunes	06/18/2026
	** 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 HRT Financial LP report for Aditxt (ADTX)?

HRT Financial LP reported an open-market sale of 3,132,480 Aditxt Class A Shares at $0.013 per share. The transaction occurred on June 16, 2026 and was disclosed on a Form 4 as a non-derivative sale of common equity.

How many Aditxt (ADTX) shares does HRT Financial LP hold after this Form 4 sale?

After selling 3,132,480 Class A Shares, HRT Financial LP’s Form 4 lists total shares following the transaction as 0. This means the reporting person showed no remaining direct holdings of Aditxt Class A Shares as of the reported transaction date.

Was the Aditxt (ADTX) insider transaction by HRT Financial LP a buy or a sell?

The transaction was a sell. HRT Financial LP executed an open-market sale, coded “S” on Form 4, disposing of 3,132,480 non-derivative Class A Shares of Aditxt at a reported price of $0.013 per share on June 16, 2026.

What type of security did HRT Financial LP sell in Aditxt (ADTX)?

HRT Financial LP sold non-derivative Class A Shares of Aditxt, Inc. The filing identifies these as the security title involved in the open-market sale, with no derivative securities or options reported in the derivative transaction section.

How significant is HRT Financial LP’s role as an Aditxt (ADTX) shareholder in this filing?

The Form 4 marks HRT Financial LP as a ten percent owner of Aditxt. Its sale of 3,132,480 Class A Shares and resulting reported balance of 0 shares indicates a complete exit of its disclosed direct ownership position in this filing.