# EDGAR Filing Document

**Accession Number:** 0000872912
**File Stem:** 0001193125-25-289917
**Filing Date:** 2025-11
**Character Count:** 4406
**Document Hash:** 8c533bff4f436cb56e03422a46fb4612
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-25-289917.hdr.sgml**: 20251120

**ACCESSION NUMBER**: 0001193125-25-289917

**CONFORMED SUBMISSION TYPE**: 8-K

**PUBLIC DOCUMENT COUNT**: 12

**CONFORMED PERIOD OF REPORT**: 20251119

**ITEM INFORMATION**: Other Events

**FILED AS OF DATE**: 20251120

**DATE AS OF CHANGE**: 20251120

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** DELCATH SYSTEMS, INC.
- **CENTRAL INDEX KEY:** 0000872912
- **STANDARD INDUSTRIAL CLASSIFICATION:** SURGICAL & MEDICAL INSTRUMENTS & APPARATUS [3841]
- **ORGANIZATION NAME:** 08 Industrial Applications and Services
- **EIN:** 061245881
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 8-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-16133
- **FILM NUMBER:** 251503644

**BUSINESS ADDRESS:**
- **STREET 1:** 566 QUEENSBURY AVENUE
- **CITY:** QUEENSBURY
- **STATE:** NY
- **ZIP:** 12804
- **BUSINESS PHONE:** (518) 743-8892

**MAIL ADDRESS:**
- **STREET 1:** 566 QUEENSBURY AVENUE
- **CITY:** QUEENSBURY
- **STATE:** NY
- **ZIP:** 12804

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** DELCATH SYSTEMS INC
- **DATE OF NAME CHANGE:** 19990607

?xml version='1.0' encoding='ASCII'? 8-K

### UNITED STATES

### SECURITIES AND EXCHANGE COMMISSION

#### Washington, DC 20549

### FORM 8-K

#### CURRENT REPORT

#### Pursuant to Section 13 or 15(d)

#### of the Securities Exchange Act of 1934

#### Date of Report (Date of earliest event reported): November 19, 2025

## DELCATH SYSTEMS, INC.

#### (Exact Name of Registrant as Specified in its Charter)

---

| | | |
|:---|:---|:---|
| **Delaware** | **001-16133** | **06-1245881** |
| **(State or other jurisdiction<br>of incorporation or organization)** | **(Commission**<br> **File Number)** | **(IRS Employer<br>Identification No.)** |

---

#### 566 Queensbury Avenue

#### Queensbury, NY 12804

#### (Address of principal executive offices) (Zip Code)
(212) 489-2100

#### (Registrant's telephone number, including area code)

#### Not Applicable

#### (Former name or former address, if changed since last report)
Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

---

| | | |
|:---|:---|:---|
| **Title of each class** | **Trading**<br> **symbol(s)** | **Name of each exchange<br>on which registered** |
| Common Stock, $.01 par value | DCTH | The Nasdaq Capital Market |

---

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (17 CFR §230.405) or Rule 12b-2 of the Securities Exchange Act of 1934 (17 CFR §240.12b-2).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

------

---

| | |
|:---|:---|
| **Item 8.01** | **Other Events.**  |

---

On November 19, 2025, the board of directors of Delcath Systems, Inc., a Delaware corporation (the "Company") authorized a share repurchase program under which the Company may repurchase up to $25 million of its outstanding shares of common stock from time to time, subject to market conditions.

------

#### SIGNATURE
Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

---

| | | |
|:---|:---|:---|
|  | DELCATH SYSTEMS, INC. | DELCATH SYSTEMS, INC. |
| Date: November 20, 2025 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;By: | /s/ Gerard Michel |
|  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Name: | Gerard Michel |
|  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Title: | Chief Executive Officer |

---