HRT Financial LP trims Aditxt (NASDAQ: ADTX) stake with open-market sales

Rhea-AI Filing Summary

HRT Financial LP, a ten percent owner of Aditxt, Inc., reported open-market sales of Class A shares. It sold 29,404 shares at $0.28 per share on April 24, 2026 and 3,811 shares at $0.29 per share on April 23, 2026. After these transactions, HRT Financial LP directly held 88,377 Class A shares.

Insider Trade Summary

Net Seller: 33,215 shares ($9,338)

Net Sell 2 txns

Insider HRT FINANCIAL LP

Role null

Sold 33,215 shs ($9K)

Type	Security	Shares	Price	Value
Sale	Class A Shares	29,404	$0.28	$8K
Sale	Class A Shares	3,811	$0.29	$1K

Holdings After Transaction: Class A Shares — 88,377 shares (Direct, null)

Footnotes (1)

Key Figures

Shares sold April 23, 2026: 3,811 shares at $0.29 Shares sold April 24, 2026: 29,404 shares at $0.28 Total shares sold: 33,215 shares +3 more

6 metrics

Shares sold April 23, 2026 3,811 shares at $0.29 Open-market sale of Class A Shares

Shares sold April 24, 2026 29,404 shares at $0.28 Open-market sale of Class A Shares

Total shares sold 33,215 shares Two open-market sales in April 2026

Holdings after transactions 88,377 shares Direct Class A holdings after April 24, 2026

Sale price April 23, 2026 $0.29 per share Class A share sale price

Sale price April 24, 2026 $0.28 per share Class A share sale price

Key Terms

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

4 terms

open-market sale financial

"transaction_action: "open-market sale""

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.

ten percent owner regulatory

""is_ten_percent_owner": 1"

Form 4 regulatory

"INSIDER FILING DATA (Form 4)"

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.

non-derivative financial

""transaction_type": "non-derivative""

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)
04/21/2026

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	04/23/2026		S		3,811	D	$0.29	117,781	D
Class A Shares	04/24/2026		S		29,404	D	$0.28	88,377	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	04/27/2026
	** 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 activity did HRT Financial LP report for Aditxt (ADTX)?

HRT Financial LP reported selling Aditxt Class A shares in two open-market transactions. The firm sold 3,811 shares on April 23, 2026 and 29,404 shares on April 24, 2026, reducing but not eliminating its direct ownership stake.

How many Aditxt (ADTX) shares did HRT Financial LP sell and at what prices?

HRT Financial LP sold a total of 33,215 Aditxt Class A shares. It sold 3,811 shares at $0.29 per share on April 23, 2026 and 29,404 shares at $0.28 per share on April 24, 2026 in open-market sales.

How many Aditxt (ADTX) shares does HRT Financial LP hold after these sales?

After the reported transactions, HRT Financial LP directly holds 88,377 Aditxt Class A shares. This figure reflects its position following the April 24, 2026 open-market sale disclosed in the Form 4 insider trading report filed with regulators.

What type of transactions did HRT Financial LP execute in Aditxt (ADTX) stock?

HRT Financial LP executed open-market sales of Aditxt Class A shares, coded as “S” transactions. These are standard market disposals rather than option exercises, gifts, or tax-withholding events, and they directly reduced the fund’s share count in the company.

Is HRT Financial LP considered a major Aditxt (ADTX) shareholder?

Yes. HRT Financial LP is identified as a ten percent owner of Aditxt in the filing. This status indicates a significant ownership stake, and its open-market sales and remaining 88,377 Class A shares are therefore disclosed under insider reporting rules.