Delcath director granted 22,500 stock options

DELCATH SYSTEMS, INC. director John Richard Sylvester received a grant of stock options for 22,500 shares of common stock at an exercise price of $11.61 per share.

Rhea-AI Filing Summary

DELCATH SYSTEMS, INC. director John Richard Sylvester received a grant of stock options for 22,500 shares of common stock at an exercise price of $11.61 per share. The options vest in equal monthly installments, with one-twelfth vesting each month starting on May 13, 2026, as long as he remains a director. Any vested options expire the earlier of 10 years from the grant date or two years after his last day of service.

Insider Trade Summary

Grant/Award: 22,500 shares

Grant/Award 1 txn

Insider Sylvester John Richard

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Stock Option (right to buy)	22,500	$0.00	$0.00

Holdings After Transaction: Stock Option (right to buy) — 22,500 contracts (Direct)

Footnotes (1)

1. F1. The option will vest and become exercisable at the rate of one-twelfth (1/12th) per month with the first such vesting to occur on May 13, 2026 and monthly thereafter for so long as the reporting person remains a director of the Issuer (and subject to the terms and conditions of the Issuer's 2020 Omnibus Equity Incentive Plan, as amended). The option will expire the earlier of 10 years from the grant date or, for vested options, two years from the last day of service.

Key Figures

Options granted: 22,500 options Exercise price: $11.61 per share Underlying shares: 22,500 shares +3 more

6 metrics

Options granted 22,500 options Stock Option (right to buy) grant for common stock

Exercise price $11.61 per share Conversion or exercise price of stock options

Underlying shares 22,500 shares Common stock underlying the options

Post-grant derivative holdings 22,500 options Total derivative securities following transaction

Vesting rate 1/12 per month Monthly vesting schedule starting May 13, 2026

Option term Up to 10 years Expires 10 years from grant or 2 years after service end

Key Terms

Stock Option (right to buy), 2020 Omnibus Equity Incentive Plan, vest and become exercisable, expiration date

4 terms

Stock Option (right to buy) financial

"security_title: Stock Option (right to buy)"

2020 Omnibus Equity Incentive Plan financial

"subject to the terms and conditions of the Issuer's 2020 Omnibus Equity Incentive Plan, as amended"

vest and become exercisable financial

"The option will vest and become exercisable at the rate of one-twelfth (1/12th) per month"

expiration date financial

"The option will expire the earlier of 10 years from the grant date or, for vested options, two years from the last day of service."

The expiration date is the deadline after which a financial contract, such as an option or a futures agreement, is no longer valid or can be exercised. It matters to investors because it determines the timeframe during which they can take action or benefit from the contract, similar to how a coupon or a food item has a limited period of usefulness. Once the expiration date passes, the contract loses its value or ability to be used.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did DELCATH SYSTEMS (DCTH) director John Richard Sylvester report on this Form 4?

He reported receiving a grant of stock options for 22,500 shares of common stock. These options are part of his director compensation and give him the right to buy shares at a set price in the future.

What is the exercise price of the new DCTH stock options granted to the director?

The options have an exercise price of $11.61 per share. This means he can purchase DELCATH SYSTEMS common stock at $11.61 once the options vest, regardless of the market price then.

How do the newly granted DELCATH SYSTEMS (DCTH) options vest?

The 22,500 options vest at a rate of one-twelfth per month. Vesting begins on May 13, 2026, and continues monthly as long as John Richard Sylvester remains a director under the company’s 2020 Omnibus Equity Incentive Plan.

When do the DCTH director stock options reported on this Form 4 expire?

The options expire on the earlier of 10 years from the grant date or, for vested options, two years from the director’s last day of service. After expiration, any unexercised options become unusable.

How many DELCATH SYSTEMS (DCTH) derivative securities does the director hold after this grant?

Following this grant, the Form 4 shows the director holding 22,500 stock options. Each option is exercisable for one share of DELCATH SYSTEMS common stock once vested and subject to plan terms.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 05/14/2026 - 05:47 PM Learn about SEC filing dates

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^*

Sylvester John Richard

(Last) (First) (Middle)

C/O DELCATH SYSTEMS, INC.

566 QUEENSBURY AVENUE

(Street)

QUEENSBURY NEW YORK 12804

(City) (State) (Zip)

UNITED STATES

(Country)

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)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/13/2026

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

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
Stock Option (right to buy)	$11.61	05/13/2026		A		22,500		(1)	(1)	Common Stock	22,500	$0	22,500	D

Explanation of Responses:

1. The option will vest and become exercisable at the rate of one-twelfth (1/12th) per month with the first such vesting to occur on May 13, 2026 and monthly thereafter for so long as the reporting person remains a director of the Issuer (and subject to the terms and conditions of the Issuer's 2020 Omnibus Equity Incentive Plan, as amended). The option will expire the earlier of 10 years from the grant date or, for vested options, two years from the last day of service.

	/s/ Gerard Michel, Attorney-in-Fact	05/14/2026
	** 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)