[Form 4] DELCATH SYSTEMS, INC. Insider Trading Activity

Rhea-AI Filing Summary

Delcath Systems, Inc. director reports open-market stock purchase. A company director bought 4,386 shares of Delcath Systems common stock on 11/21/2025 at a price of $8.89 per share in a transaction reported as a purchase. After this trade, the director beneficially owns 14,936 shares, held directly. The filing is a routine Form 4 disclosure showing insider ownership and the latest change in the director's personal investment in Delcath stock.

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

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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^*

Sylvester John Richard

(Last) (First) (Middle)

C/O DELCATH SYSTEMS, INC.

566 QUEENSBURY AVENUE

(Street)

QUEENSBURY NY 12804

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
DELCATH SYSTEMS, INC. [ DCTH ]

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

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

3. Date of Earliest Transaction (Month/Day/Year)
11/21/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

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	11/21/2025		P		4,386	A	$8.89	14,936	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:

	/s/ Gerard Michel, Attorney-in-Fact	11/25/2025
	** 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.

FAQ

What insider transaction did Delcath Systems (DCTH) report?

A Delcath Systems director reported buying 4,386 shares of common stock on 11/21/2025 in an open-market purchase at $8.89 per share.

How many Delcath Systems (DCTH) shares does the director own after this trade?

Following the reported transaction, the director beneficially owns 14,936 shares of Delcath Systems common stock, held directly.

What was the price paid per share in the Delcath Systems (DCTH) insider purchase?

The reported purchase price was $8.89 per share for the 4,386 Delcath Systems common shares acquired.

What SEC form was filed for this Delcath Systems (DCTH) insider transaction?

The transaction was reported on Form 4, which discloses changes in the beneficial ownership of a company’s equity securities by its insiders.

What is the relationship of the reporting person to Delcath Systems (DCTH)?

The reporting person in this filing is identified as a Director of Delcath Systems, Inc.

Was this Delcath Systems (DCTH) insider trade reported as a purchase or a sale?

The Form 4 lists the transaction code as P, indicating an open-market or private purchase of common stock.