# EDGAR Filing Document

**Accession Number:** 0001434265
**File Stem:** 0001193125-25-335521
**Filing Date:** 2025-12
**Character Count:** 7939
**Document Hash:** da6ffcd4a504b55db0854de82009d603
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-25-335521.hdr.sgml**: 20251229

**ACCESSION NUMBER**: 0001193125-25-335521

**CONFORMED SUBMISSION TYPE**: 4

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20251222

**FILED AS OF DATE**: 20251229

**DATE AS OF CHANGE**: 20251229

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** GENMAB A/S
- **CENTRAL INDEX KEY:** 0001434265
- **STANDARD INDUSTRIAL CLASSIFICATION:** PHARMACEUTICAL PREPARATIONS [2834]
- **ORGANIZATION NAME:** 03 Life Sciences

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-37773
- **FILM NUMBER:** 251610192

**BUSINESS ADDRESS:**
- **STREET 1:** TOLDBODGADE 33
- **CITY:** 1253 COPENHAGEN K
- **STATE:** G7
- **ZIP:** 00000

**MAIL ADDRESS:**
- **STREET 1:** TOLDBODGADE 33
- **CITY:** 1253 COPENHAGEN K
- **STATE:** G7
- **ZIP:** 00000
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Merus N.V.
- **CENTRAL INDEX KEY:** 0001651311
- **STANDARD INDUSTRIAL CLASSIFICATION:** PHARMACEUTICAL PREPARATIONS [2834]
- **ORGANIZATION NAME:** 03 Life Sciences
- **EIN:** 000000000
- **STATE OF INCORPORATION:** P7
- **FISCAL YEAR END:** 1231

**BUSINESS ADDRESS:**
- **STREET 1:** YALELAAN 62
- **CITY:** 3584 CM UTRECHT
- **STATE:** DE
- **BUSINESS PHONE:** 31 030 253 8800

**MAIL ADDRESS:**
- **STREET 1:** YALELAAN 62
- **CITY:** 3584 CM UTRECHT
- **STATE:** DE

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Merus B.V.
- **DATE OF NAME CHANGE:** 20150819

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## FORM 4

### STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

[ ] 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**<sup>*</sup><br>GENMAB A/S<br><sub>(Last) (First) (Middle)</sub><br>CARL JACOBSENS VEJ 30<br><sub>(Street)</sub><br>2500 VALBY, G7 <br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2025-12-22 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director [X] 10% Owner<br>[ ] Officer (give title below) [ ] Other (specify below)<br>_ _ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>Merus N.V. [ MRUS ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[X] Form filed by One Reporting Person<br>[ ] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | 3. Transaction Code (V) | 3. Transaction Code (V) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | Code | V | Amount | (A) or (D) | Price | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| Common Shares, nominal value EUR 0.09 per share | 2025-12-22 |  | P |  | 15710 | A | $97.00 | 72028775<sup>(1)(2)</sup> | I<sup>(1)(2)</sup> | See footnotes<sup>(1)(2)</sup> |
| Common Shares, nominal value EUR 0.09 per share | 2025-12-23 |  | P |  | 561042 | A | $97.00 | 72589817<sup>(1)(2)</sup> | I<sup>(1)(2)</sup> | See footnotes<sup>(1)(2)</sup> |
| Common Shares, nominal value EUR 0.09 per share | 2025-12-24 |  | P |  | 96082 | A | $97.00 | 72685899<sup>(1)(2)</sup> | I<sup>(1)(2)</sup> | See footnotes<sup>(1)(2)</sup> |
| Common Shares, nominal value EUR 0.09 per share | 2025-12-26 |  | P |  | 142610 | A | $97.00 | 72828509<sup>(1)(2)</sup> | I<sup>(1)(2)</sup> | See footnotes<sup>(1)(2)</sup> |

---

## Table II - Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | 4. Transaction Code (V) | 4. Transaction Code (V) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 6. Date Exercisable and Expiration Date | 6. Date Exercisable and Expiration Date | 7. Title and Amount of Underlying Securities | 7. Title and Amount of Underlying Securities | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | Code | V | (A) | (D) | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

---

### Footnotes:

(1) On September 29, 2025, Genmab A/S ("Parent"), Genmab Holding II B.V., a wholly owned subsidiary of Parent ("Purchaser"), and the Issuer entered into a transaction agreement (the "Transaction Agreement"). Pursuant to the terms of the Transaction Agreement, Purchaser commenced a tender offer for all the issued and outstanding common shares, nominal value EUR 0.09 per share (the "Common Shares") of the Issuer (the "Offer"), and, on December 12, 2025, following the expiration of the initial offering period of the Offer (the "Expiration Time"), Purchaser accepted 71,463,077 Common Shares that were validly tendered and not properly withdrawn pursuant to the Offer as of the Expiration Time, representing approximately 94.2% of the Issuer's outstanding Common Shares, in exchange for a cash payment equal to $97.00 per Common Share, without interest and less applicable withholding taxes.

(2) On December 12, 2025, Purchaser commenced a subsequent offering period during which Purchaser acquired an additional 549,988 Common Shares through December 21, 2025 (as previously reported), as well as an additional 15,710 Common Shares on December 22, 2025, an additional 561,042 Common Shares on December 23, 2025, an additional 96,082 Common Shares on December 24, 2025, and an additional 142,610 Common Shares on December 26, 2025. Parent, as the parent entity of Purchaser, beneficially owns the Common Shares held directly by Purchaser.

**Signature:** /s/ Jan G. J. van de Winkel, President and Chief Executive Officer, Genmab A/S  
**Date:** 2025-12-29

**Signature:** /s/ Anthony Pagano, Executive Vice President & Chief Financial Officer, Genmab A/S  
**Date:** 2025-12-29

### Remarks:

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.**