Director at Lantheus (NASDAQ: LNTH) receives 4,137-share stock grant

Rhea-AI Filing Summary

LENO SAM R reported acquisition or exercise transactions in this Form 4 filing.

Lantheus Holdings director Sam R. Leno reported an equity award of 4,137 shares of common stock. The shares were granted at a price of $0.00 per share as a compensation-related award, not an open-market trade. Following this grant, his direct holdings increased to 67,246 common shares.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider LENO SAM R

Role null

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

Holdings After Transaction: Common Stock — 67,246 shares (Direct, null)

Footnotes (1)

Key Figures

Shares granted: 4,137 shares Grant price: $0.00 per share Shares held after: 67,246 shares +3 more

6 metrics

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

Grant price $0.00 per share Equity award, non-market transaction

Shares held after 67,246 shares Direct holdings following the grant

Transaction code A Grant, award, or other acquisition

Transaction type Non-derivative Common stock, not options or other derivatives

Acquire transactions 1 transaction Only acquisition reported in this Form 4

Key Terms

Form 4, non-derivative, Grant, award, or other acquisition

3 terms

Form 4 regulatory

"Lantheus Holdings director Sam R. Leno reported an equity award of 4,137 shares in a Form 4 filing."

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

non-derivative financial

"It is categorized as a non-derivative transaction in common stock, representing a direct grant of 4,137 shares."

Grant, award, or other acquisition regulatory

"The Form 4 codes it as a “Grant, award, or other acquisition,” with 4,137 common shares awarded at $0.00 per share."

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^*

LENO SAM R

(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	67,246	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 Sam R. Leno?

Lantheus reported that director Sam R. Leno received a grant of 4,137 shares of common stock. The award was recorded at $0.00 per share, reflecting a compensation grant rather than a market purchase or sale, and increased his direct holdings.

Was the LNTH insider transaction a stock purchase or a grant?

The LNTH insider transaction was a stock grant, not a purchase. The Form 4 codes it as a “Grant, award, or other acquisition,” with 4,137 common shares awarded at $0.00 per share as part of equity compensation, rather than an open-market buy.

How many Lantheus (LNTH) shares does Sam R. Leno hold after this grant?

After the reported grant, Sam R. Leno directly holds 67,246 shares of Lantheus common stock. This total includes the new 4,137-share award disclosed in the Form 4 and represents his direct ownership position following the transaction date.

What does transaction code "A" mean in this Lantheus (LNTH) Form 4?

In this Lantheus Form 4, transaction code “A” signifies a grant, award, or other acquisition of stock. It indicates that 4,137 common shares were issued to director Sam R. Leno as compensation, at no cash cost per share, rather than a market trade.

Did the Lantheus (LNTH) insider transaction involve derivatives or options?

The reported Lantheus insider transaction did not involve derivatives or options. It is categorized as a non-derivative transaction in common stock, representing a direct grant of 4,137 shares, with no derivative positions listed in the derivative summary for this filing.