Lantheus Holdings (LNTH) CFO receives 38,002-share stock award, tax shares withheld

Rhea-AI Filing Summary

Lantheus Holdings CFO Robert J. Marshall Jr. reported equity awards and related tax withholding in company stock. He acquired 38,002 shares of common stock on March 5, 2026 at a stated price of $0.00 per share as a grant or award.

The award consists of 19,001 restricted stock units that vest in equal installments over three years and 19,001 Total Shareholder Return performance-based restricted stock units that cliff vest after a three-year performance period, with the final PSU award ranging from 0% to 200% of the target. On the same date, 1,182 shares were disposed of at $76.31 per share to cover tax obligations, leaving him with 122,792 directly owned shares of common stock after these transactions.

Insider Trade Summary

2 transactions reported

Mixed 2 txns

Insider Marshall Robert J. Jr.

Role CFO and Treasurer

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	38,002	$0.00	--
Tax Withholding	Common Stock	1,182	$76.31	$90K

Holdings After Transaction: Common Stock — 123,974 shares (Direct)

Footnotes (1)

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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^*

Marshall Robert J. Jr.

(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)
	CFO and Treasurer

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)		38,002	A	$0	123,974	D
Common Stock	03/05/2026		F		1,182	D	$76.31	122,792	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 19,001 restricted stock units that vest in equal installments over a three-year period and 19,001 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.
* 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

What did Lantheus (LNTH) CFO Robert J. Marshall Jr. report on this Form 4?

He reported an equity award of 38,002 shares of common stock and a related tax-withholding share disposition. The filing shows his direct ownership changed to 122,792 shares after these transactions on March 5, 2026.

How many Lantheus (LNTH) shares were granted to the CFO and on what terms?

He was granted 38,002 shares of common stock as an equity award. This consists of 19,001 restricted stock units vesting in equal installments over three years and 19,001 performance-based PSUs that cliff vest after a three-year performance period.

Were any Lantheus (LNTH) shares sold on the open market in this Form 4?

The filing shows 1,182 shares were disposed of at $76.31 per share under code F. This code indicates shares were withheld or delivered to satisfy tax obligations, not an open-market sale initiated for investment purposes.

What is the performance-based PSU structure in the Lantheus (LNTH) CFO’s award?

The award includes 19,001 Total Shareholder Return PSUs that cliff vest after a three-year performance period. The ultimate PSU payout can range from 0% to 200% of the target amount, depending on actual performance achieved.

How did the Lantheus (LNTH) CFO’s direct share ownership change after these transactions?

After the equity grant and the tax-withholding disposition, his direct ownership stood at 122,792 shares of common stock. This figure reflects both the 38,002-share award and the 1,182 shares delivered to cover tax liabilities.