Lantheus (LNTH) director uses 381 shares for tax-withholding, retains over 27,000

Rhea-AI Filing Summary

Lantheus Holdings, Inc. director Gerard Ber reported a small tax-related share disposition. On May 14, 2026, 381 shares of common stock were disposed of at $96.67 per share to satisfy a tax obligation by delivering shares rather than cash.

After this tax-withholding transaction, Ber directly held 27,118 shares of Lantheus common stock. This type of Form 4 event reflects administrative handling of taxes on equity compensation rather than an open-market sale decision.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Ber Gerard

Role null

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock	381	$96.67	$37K

Holdings After Transaction: Common Stock — 27,118 shares (Direct, null)

Footnotes (1)

Key Figures

Tax-withholding shares: 381 shares Per-share value: $96.67 per share Post-transaction holdings: 27,118 shares

3 metrics

Tax-withholding shares 381 shares Common Stock disposed on May 14, 2026

Per-share value $96.67 per share Value used for tax-withholding disposition

Post-transaction holdings 27,118 shares Common Stock directly held after transaction

Key Terms

Form 4, tax-withholding disposition, Common Stock

3 terms

Form 4 regulatory

"INSIDER FILING DATA (Form 4):"

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.

tax-withholding disposition financial

"transaction_action": "tax-withholding disposition""

A tax-withholding disposition is an event or transaction—such as selling or transferring securities, exercising options, or receiving compensation—that triggers a requirement to hold back part of the payment and remit it to tax authorities. It matters to investors because it reduces the cash they receive immediately and can change the timing and amount of taxable income, like a cashier taking a portion of your sale proceeds to pay taxes before you get the rest.

Common Stock financial

"security_title": "Common Stock""

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.

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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^*

Ber Gerard

(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		F		381	D	$96.67	27,118	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	06/03/2026
	** 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) director Gerard Ber report?

Director Gerard Ber reported a tax-related disposition of 381 shares of Lantheus common stock. The shares were delivered to cover a tax liability, rather than sold in the open market, as disclosed in a Form 4 filing.

How many Lantheus (LNTH) shares were involved in Gerard Ber’s tax-withholding transaction?

The transaction involved 381 shares of Lantheus common stock. These shares were used as payment for a tax obligation, classified as a tax-withholding disposition, rather than a regular buy or sell trade in the market.

At what price were the Lantheus (LNTH) shares valued in Gerard Ber’s Form 4 filing?

The 381 shares were valued at $96.67 per share in the Form 4. This price reflects the share value used for the tax-withholding disposition, not necessarily an executed open-market sale price on an exchange.

How many Lantheus (LNTH) shares does Gerard Ber hold after this Form 4 transaction?

Following the tax-withholding disposition, Gerard Ber directly holds 27,118 shares of Lantheus common stock. This post-transaction balance is reported in the Form 4 and shows his remaining direct ownership position after the tax payment.

Was Gerard Ber’s Lantheus (LNTH) Form 4 transaction a normal sale of shares?

No, the Form 4 classifies the event as a tax-withholding disposition. Shares were delivered to satisfy a tax liability, which differs from an open-market sale initiated to change or monetize an investment position.