Lantheus (LNTH) Chief Commercial Officer updates insider stock holdings

Rhea-AI Filing Summary

Lantheus Holdings’ Chief Commercial Officer reported small changes in personal ownership of the company’s common stock related to transactions on December 15, 2024 and December 15, 2025. The transactions, each coded "F," involved the disposition of 356 shares at $93.48 and 368 shares at $66.57.

After the December 2024 transaction, the officer beneficially owned 25,055 shares. After the December 2025 transaction, beneficial ownership increased to 39,094 shares, which includes 143 shares acquired under the LNTH employee stock purchase plan on March 13, 2025, and 95 shares acquired under the same plan on September 12, 2025.

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^*

Morgan Amanda Michelle

(Last) (First) (Middle)

C/O LANTHEUS HOLDINGS, INC.

201 BURLINGTON ROAD, SOUTH BUILDING

(Street)

BEDFORD MA 01730

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Lantheus Holdings, Inc. [ LNTH ]

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

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

3. Date of Earliest Transaction (Month/Day/Year)
12/15/2024

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	12/15/2024		F		356	D	$93.48	25,055(1)	D
Common Stock	12/15/2025		F		368	D	$66.57	39,094(2)	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:

1. Such amount excludes securities acquired or disposed of subsequent to December 15, 2024.

2. Includes 143 shares acquired under the LNTH employee stock purchase plan on March 13, 2025, and 95 shares acquired under the LNTH employee stock purchase plan on September 12, 2025.

	/s/ Eric M. Green, attorney-in-fact	12/17/2025
	** 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

Who reported transactions in Lantheus Holdings (LNTH) stock?

The reporting person is an officer of Lantheus Holdings, Inc., serving as the company’s Chief Commercial Officer.

What transactions in LNTH common stock were reported on December 15, 2024?

On December 15, 2024, the officer reported a transaction coded "F" involving the disposition of 356 shares of Lantheus common stock at a price of $93.48 per share.

What transactions in LNTH common stock were reported on December 15, 2025?

On December 15, 2025, the officer reported another "F" coded transaction, disposing of 368 shares of Lantheus common stock at a price of $66.57 per share.

How many LNTH shares did the officer own after the December 2024 transaction?

Following the December 15, 2024 transaction, the officer beneficially owned 25,055 shares of Lantheus common stock in direct ownership.

How many LNTH shares did the officer own after the December 2025 transaction?

After the December 15, 2025 transaction, the officer beneficially owned 39,094 shares of Lantheus common stock in direct ownership.

What LNTH shares were acquired through the employee stock purchase plan?

The reported holdings include 143 shares acquired under the LNTH employee stock purchase plan on March 13, 2025, and 95 shares acquired under the same plan on September 12, 2025.

Is the Form 4 for Lantheus (LNTH) filed by more than one reporting person?

No. The document indicates it is a Form filed by one reporting person, not a joint or group filing.