Lantheus (LNTH) CCO reports 26,208-share award and tax withholding move

Rhea-AI Filing Summary

Lantheus Holdings, Inc. Chief Commercial Officer Amanda Michelle Morgan reported equity compensation and related tax withholding transactions in company common stock. She received a grant of 26,208 shares at no cost, consisting of 13,104 restricted stock units and 13,104 performance-based PSUs that vest over a three-year period.

The Form 4 also shows a disposition of 595 shares at $76.31 per share to satisfy tax obligations through share withholding, not an open-market sale. After these transactions, she directly holds 64,153 shares of Lantheus common stock.

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

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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)
03/05/2026

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	03/05/2026		A(1)		26,208	A	$0	64,748	D
Common Stock	03/05/2026		F		595	D	$76.31	64,153	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. Consists of 13,104 restricted stock units that vest in equal installments over a three-year period and 13,104 Total Shareholder Return performance-based restricted stock units ("PSUs") that cliff vest following a three-year performance period. The amount of PSUs included in this Report reflects the target award; however, the ultimate award size can range from 0% to 200% of the target based on the actual performance achieved at the end of the performance period.

	/s/ Eric M. Green, attorney-in-fact	03/09/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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FAQ

What insider transactions did LNTH executive Amanda Michelle Morgan report?

Amanda Michelle Morgan reported receiving a grant of 26,208 Lantheus common stock units and a related tax-withholding disposition of 595 shares. The award was made at no cost and consists of time-vested restricted stock units and performance-based PSUs over a three-year period.

How many Lantheus (LNTH) shares did the executive receive in this Form 4?

She received 26,208 shares of Lantheus common stock in the form of equity awards. This includes 13,104 restricted stock units and 13,104 performance-based PSUs, with vesting tied to time and a three-year performance period, respectively, as described in the filing footnote.

What does the 595-share disposition in the LNTH Form 4 represent?

The 595-share disposition is reported with code F, meaning shares were withheld to pay exercise price or tax liabilities. These shares, valued at $76.31 each, were not sold on the open market but used to satisfy tax obligations associated with the equity award.

How do the performance-based PSUs in the LNTH filing work?

The performance-based PSUs have a three-year performance period and cliff vest at the end. The reported 13,104 PSUs reflect a target award, but the final number earned can range from 0% to 200% of target, depending on total shareholder return performance over that period.

What is Amanda Michelle Morgan’s Lantheus share ownership after these transactions?

After the reported award and tax-withholding disposition, Amanda Michelle Morgan directly holds 64,153 shares of Lantheus common stock. This total includes the newly granted restricted stock units and PSUs, subject to their respective time-based and performance-based vesting conditions.

Are the new LNTH equity awards immediately vested and unrestricted?

No, the awards vest over time and based on performance. Half are restricted stock units that vest in equal installments over three years, and half are PSUs that cliff vest after a three-year performance period, with the final PSUs earned dependent on actual performance outcomes.