Lantheus (LNTH) director receives 4,137-share stock grant in Form 4 filing

Rhea-AI Filing Summary

Morrow Phuong Khanh reported acquisition or exercise transactions in this Form 4 filing.

Lantheus Holdings, Inc. director Phuong Khanh Morrow received a grant of 4,137 shares of Common Stock on May 14, 2026 as a compensation-related award. The filing shows no purchase price for this grant, indicating it was awarded rather than bought in the market. After this transaction, Morrow directly holds 7,237 shares of Lantheus common stock.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Morrow Phuong Khanh

Role null

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

Holdings After Transaction: Common Stock — 7,237 shares (Direct, null)

Footnotes (1)

Key Figures

Shares granted: 4,137 shares Grant price per share: $0.0000 per share Shares after transaction: 7,237 shares +1 more

4 metrics

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

Grant price per share $0.0000 per share Compensation-related award, not market purchase

Shares after transaction 7,237 shares Total direct holdings following grant

Acquire transactions 1 transaction Non-derivative acquisition coded as grant/award

Key Terms

Common Stock, Grant, award, or other acquisition, non-derivative, direct ownership

4 terms

Common Stock financial

"security_title: "Common Stock" in the non-derivative transaction record"

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.

Grant, award, or other acquisition financial

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

non-derivative financial

"transaction_type: "non-derivative" describing the equity transaction"

direct ownership financial

"ownership_type: "direct" and ownership_code: "D" for the holdings"

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^*

Morrow Phuong Khanh

(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	7,237	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 Phuong Khanh Morrow?

Lantheus reported that director Phuong Khanh Morrow received a grant of 4,137 shares of Common Stock. The award carried a zero-dollar price per share, reflecting compensation rather than an open-market purchase, and increased her direct holdings to 7,237 shares.

Was the Lantheus (LNTH) insider transaction a market purchase or a grant?

The transaction was a grant or award, not a market purchase. It is coded as a “Grant, award, or other acquisition” with a transaction price of $0.0000 per share, indicating compensation-related issuance instead of shares bought on the open market.

How many Lantheus (LNTH) shares does Phuong Khanh Morrow hold after this Form 4?

After the reported grant, director Phuong Khanh Morrow directly holds 7,237 shares of Lantheus Common Stock. This total reflects the newly awarded 4,137 shares added to her prior position, as disclosed in the Form 4’s post-transaction holdings field.

What does transaction code “A” mean in the Lantheus (LNTH) Form 4?

Transaction code “A” in this Form 4 stands for a “Grant, award, or other acquisition.” It signals that the insider received shares, typically as equity compensation, rather than buying or selling them in open-market transactions on an exchange.

Does the Lantheus (LNTH) Form 4 show any insider stock sales?

The Form 4 shows no insider stock sales. It reports one acquisition transaction, a grant of 4,137 shares of Common Stock, and the transaction summary indicates zero sell transactions and no derivative exercises or tax-withholding dispositions.