Lantheus (NASDAQ: LNTH) director Gary J. Pruden awarded 4,137 shares

Rhea-AI Filing Summary

Pruden Gary J reported acquisition or exercise transactions in this Form 4 filing.

Lantheus Holdings director Gary J. Pruden reported an equity compensation grant on Common Stock. He received 4,137 shares as a grant or award at $0.00 per share, bringing his directly held stake to 6,674 shares.

In addition, the filing lists indirect holdings of Common Stock held through the Georgeane Pruden Revocable Trust with 8,449 shares and the Gary J. Pruden Revocable Trust with 14,613 shares as of the same date.

Insider Trade Summary

3 transactions reported

Mixed 3 txns

Insider Pruden Gary J

Role null

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

Holdings After Transaction: Common Stock — 6,674 shares (Direct, null); Common Stock — 14,613 shares (Indirect, By the Gary J. Pruden Revocable Trust)

Footnotes (1)

Key Figures

Equity grant size: 4,137 shares Grant price per share: $0.00 per share Direct holdings after grant: 6,674 shares +2 more

5 metrics

Equity grant size 4,137 shares Common Stock grant or award on 2026-05-14

Grant price per share $0.00 per share Price for 4,137-share Common Stock grant

Direct holdings after grant 6,674 shares Common Stock directly held following the award

Indirect holdings (Georgeane Pruden Revocable Trust) 8,449 shares Common Stock held indirectly via revocable trust

Indirect holdings (Gary J. Pruden Revocable Trust) 14,613 shares Common Stock held indirectly via revocable trust

Key Terms

Grant, award, or other acquisition, indirect ownership, Revocable Trust

3 terms

Grant, award, or other acquisition financial

"transaction_code_description: Grant, award, or other acquisition"

indirect ownership financial

"ownership_type: indirect, nature_of_ownership: By the Georgeane Pruden Revocable Trust"

Revocable Trust financial

"nature_of_ownership: By the Gary J. Pruden Revocable Trust"

A revocable trust is a legal arrangement where the person who creates it keeps control and can change or cancel the trust at any time, while naming who will manage and receive the assets later. Think of it like a flexible folder for your investments and property that can be relabeled or reworked as circumstances change; it matters to investors because it determines how ownership is recorded, how easily assets transfer on incapacity or death, and whether holdings bypass public probate proceedings.

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^*

Pruden Gary J

(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	6,674	D
Common Stock								14,613	I	By the Gary J. Pruden Revocable Trust
Common Stock								8,449	I	By the Georgeane Pruden Revocable Trust

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 LNTH director Gary J. Pruden report?

Gary J. Pruden reported receiving a grant of 4,137 shares of Lantheus Holdings Common Stock. The shares were acquired at $0.00 per share as a grant or award, indicating compensation rather than an open-market purchase.

How many LNTH shares does Gary J. Pruden now hold directly?

After the reported grant, Gary J. Pruden directly holds 6,674 shares of Lantheus Holdings Common Stock. This total reflects his position following the 4,137-share equity award reported in the Form 4 filing.

What indirect LNTH holdings are associated with Gary J. Pruden?

The filing lists indirect holdings of Lantheus stock through revocable trusts: 8,449 shares held by the Georgeane Pruden Revocable Trust and 14,613 shares held by the Gary J. Pruden Revocable Trust as of the transaction date.

Was the LNTH Form 4 transaction an open-market purchase or sale?

The Form 4 shows a grant or award acquisition of 4,137 Common Stock shares at $0.00 per share. This indicates a compensation-related grant, not an open-market buy or sell transaction in Lantheus Holdings shares.

Does the LNTH Form 4 show any derivative securities for Gary J. Pruden?

The Form 4 summary shows no derivative transactions for Gary J. Pruden in this filing. The activity relates only to Common Stock, including the 4,137-share grant and reported indirect holdings through revocable trusts.