Lantheus (LNTH) director Maeusli Heinz Christoph receives 4,137-share stock grant

Rhea-AI Filing Summary

Lantheus Holdings director Maeusli Heinz Christoph received a stock grant of 4,137 common shares as compensation. The shares were acquired at no cash cost per share and are held directly. After this award, Christoph beneficially owns 30,014 shares of Lantheus Holdings common stock.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Maeusli Heinz Christoph

Role null

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	4,137	$0.00	--

Holdings After Transaction: Common Stock — 30,014 shares (Direct, null)

Footnotes (1)

Key Figures

Shares granted: 4,137 shares Grant price: $0.00 per share Shares owned after grant: 30,014 shares +1 more

4 metrics

Shares granted 4,137 shares Common Stock grant on May 14, 2026

Grant price $0.00 per share Reported transaction price for the stock award

Shares owned after grant 30,014 shares Total direct beneficial ownership following transaction

Transaction code A Grant, award, or other acquisition of common stock

Key Terms

Grant, award, or other acquisition, Common Stock, direct beneficial ownership

3 terms

Grant, award, or other acquisition financial

"transaction_code_description": "Grant, award, or other acquisition""

Common Stock financial

""security_title": "Common Stock""

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

direct beneficial ownership financial

""ownership_type": "direct", "ownership_code": "D""

Form 4 Insider Transactions: What Each Field Means →

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^*

Maeusli Heinz Christoph

(Last) (First) (Middle)

C/O LANTHEUS HOLDINGS, INC.

201 BURLINGTON ROAD, SOUTH BUILDING

(Street)

BEDFORD MASSACHUSETTS 01730

(City) (State) (Zip)

UNITED STATES

(Country)

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

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)
05/14/2026

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
Common Stock	05/14/2026		A		4,137	A	$0	30,014	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/ Eric M. Green, attorney-in-fact	05/18/2026
	** 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)

FAQ

What insider transaction did Lantheus (LNTH) report for Maeusli Heinz Christoph?

Lantheus reported that director Maeusli Heinz Christoph received a grant of 4,137 shares of common stock. This was a compensation-related award, not an open-market purchase, and was recorded as a grant, award, or other acquisition under SEC transaction code A.

How many Lantheus (LNTH) shares did Maeusli Heinz Christoph hold after this Form 4 transaction?

After the reported grant, Maeusli Heinz Christoph beneficially owned 30,014 shares of Lantheus common stock. This total reflects the new 4,137-share award added to his prior holdings and is reported as a direct ownership position on the Form 4.

Was the Lantheus (LNTH) insider stock grant to Maeusli Heinz Christoph an open-market buy?

No, the 4,137-share transaction for Maeusli Heinz Christoph was a grant, not an open-market buy. The Form 4 classifies it under code A as a grant, award, or other acquisition, with a reported price of $0.00 per share, indicating compensation rather than a purchase.

What type of security did Maeusli Heinz Christoph receive from Lantheus (LNTH)?

Maeusli Heinz Christoph received common stock of Lantheus Holdings as his award. The Form 4 specifies the security title as “Common Stock” and records 4,137 shares granted, increasing his directly held position to a total of 30,014 common shares after the transaction.

How is the ownership of the new Lantheus (LNTH) shares by Maeusli Heinz Christoph classified?

The new shares are classified as directly owned by Maeusli Heinz Christoph. The Form 4 marks the ownership code as D for direct, with no indication of indirect entities like trusts or LLCs, meaning the 30,014 shares are reported as his direct beneficial ownership.