Ten percent owner HRT Financial LP trades Aditxt (ADTX) Class A shares

Rhea-AI Filing Summary

HRT Financial LP, a ten percent owner of Aditxt, Inc. (ADTX), reported mixed open-market trades in Class A Shares. It bought 72,912 shares at $0.33 per share on April 21, 2026 and sold 11,982 shares at $0.30 per share on April 22, 2026. After these transactions, HRT Financial LP directly held 121,592 Class A Shares, reflecting a net increase of 60,930 shares.

Insider Trade Summary

Net Buyer: 60,930 shares ($24,061)

Net Buy 2 txns

Insider HRT FINANCIAL LP

Role null

Bought 72,912 shs ($24K)

Sold 11,982 shs ($4K)

Type	Security	Shares	Price	Value
Sale	Class A Shares	11,982	$0.30	$4K
Purchase	Class A Shares	72,912	$0.33	$24K

Holdings After Transaction: Class A Shares — 121,592 shares (Direct, null)

Footnotes (1)

Key Figures

Shares purchased: 72,912 shares Purchase price: $0.33 per share Shares sold: 11,982 shares +3 more

6 metrics

Shares purchased 72,912 shares Open-market purchase of Class A Shares at $0.33 on April 21, 2026

Purchase price $0.33 per share Price paid for 72,912 Class A Shares on April 21, 2026

Shares sold 11,982 shares Open-market sale of Class A Shares at $0.30 on April 22, 2026

Sale price $0.30 per share Price received for 11,982 Class A Shares on April 22, 2026

Net shares acquired 60,930 shares Net of purchase and sale across the two reported transactions

Shares held after trades 121,592 shares Direct holdings of Aditxt Class A Shares following the April 2026 transactions

Key Terms

open-market purchase, open-market sale, ten percent owner, non-derivative

4 terms

open-market purchase financial

"transaction_action: "open-market purchase" for the 72,912 Class A Shares on April 21, 2026"

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.

open-market sale financial

"transaction_action: "open-market sale" for the 11,982 Class A Shares on April 22, 2026"

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

non-derivative financial

"transaction_type: "non-derivative" describes the Class A Share trades in this Form 4"

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^*

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	04/21/2026		P		72,912	A	$0.33	133,574	D
Class A Shares	04/22/2026		S		11,982	D	$0.3	121,592	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	04/23/2026
	** 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 transactions did HRT Financial LP report for Aditxt (ADTX)?

HRT Financial LP reported one open-market purchase and one open-market sale of Aditxt Class A Shares. It bought 72,912 shares at $0.33 and sold 11,982 shares at $0.30, ending with 121,592 shares directly held after the trades.

Did HRT Financial LP have a net buy or net sell position in Aditxt (ADTX)?

HRT Financial LP had a net buy position in Aditxt shares. It purchased 72,912 shares and sold 11,982 shares, resulting in a net addition of 60,930 Class A Shares to its direct holdings following the reported transactions.

At what prices did HRT Financial LP trade Aditxt (ADTX) Class A Shares?

HRT Financial LP bought Aditxt Class A Shares at $0.33 per share and sold shares at $0.30 per share. Both transactions were reported as open-market trades in non-derivative Class A Shares on consecutive days in April 2026.

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

After the reported transactions, HRT Financial LP directly holds 121,592 Aditxt Class A Shares. This figure reflects the impact of buying 72,912 shares and selling 11,982 shares in open-market trades over two consecutive trading days in April 2026.

What type of Form 4 activity is shown for Aditxt (ADTX) in this filing?

The Form 4 shows routine open-market trading activity in Aditxt Class A Shares by HRT Financial LP. It includes a purchase coded “P” and a sale coded “S,” both classified as non-derivative, direct ownership transactions by a ten percent owner.