Planned sale of 6,713 company shares disclosed

A shareholder has filed a notice of proposed sale of 6,713 shares of common stock, with an aggregate market value of 449,570.29.

Rhea-AI Filing Summary

A shareholder has filed a notice of proposed sale of 6,713 shares of common stock, with an aggregate market value of 449,570.29. The shares are to be sold through Fidelity Brokerage Services LLC on the NASDAQ, with an approximate sale date of 02/02/2026. The issuer has 66,311,779 common shares outstanding.

The shares to be sold were acquired through restricted stock vesting and employee stock purchase plan transactions between 03/03/2022 and 09/12/2025. The filing also lists prior sales over the past three months by Paul M. Blanchfield, including multiple common stock sales with stated gross proceeds.

FAQ

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What does this Form 144 filing for LNTH disclose?

The filing discloses a planned sale of 6,713 common shares with an aggregate market value of 449,570.29. The shares are to be sold through Fidelity Brokerage Services LLC on NASDAQ, with an approximate sale date of 02/02/2026.

How many LNTH shares are planned to be sold and on which exchange?

The notice covers a proposed sale of 6,713 common shares of the issuer. The shares are expected to be sold through Fidelity Brokerage Services LLC on the NASDAQ exchange, with an approximate sale date of 02/02/2026.

How were the LNTH shares in this Form 144 acquired?

The shares were acquired through restricted stock vesting and employee stock purchase plan (ESPP) purchases. Acquisition dates range from 03/03/2022 to 09/12/2025, with consideration described as compensation for vesting and cash for ESPP purchases.

What prior LNTH stock sales are reported for the past 3 months?

The filing lists prior common stock sales by Paul M. Blanchfield on 11/14/2025, 11/26/2025, 12/12/2025, and 01/06/2026, with respective gross proceeds of 871,106.26, 686,664.45, 218,150.98, and 501,798.01.

How many LNTH shares are outstanding according to this notice?

The document states that there are 66,311,779 common shares of the issuer outstanding. This figure provides context for the size of the proposed 6,713-share sale relative to the company’s total outstanding common stock base.

Who is the seller named in this LNTH Form 144 filing?

The seller named for recent transactions is Paul M. Blanchfield, with an address at 201 Burlington Road, South Building, Bedford, MA 01730. The filing lists his prior common stock sales and the proposed additional sale of 6,713 shares under Rule 144.

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Accepted by SEC EDGAR 02/02/2026 - 01:32 PM EST Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001801395
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	Lantheus Holdings, Inc.
SEC File Number	001-36569
Address of Issuer	331 TREBLE COVE ROAD NORTH BILLERICA MASSACHUSETTS 01862
Phone	978 671-8001
Name of Person for Whose Account the Securities are To Be Sold	Blanchfield Paul
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Former Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917	6713	449570.29	66311779	02/02/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	03/03/2022	Restricted Stock Vesting	Issuer			4253	03/03/2022	Compensation
Common	03/03/2025	Restricted Stock Vesting	Issuer			1185	03/03/2025	Compensation
Common	03/13/2025	ESPP Purchase	Issuer			147	03/13/2025	Cash
Common	04/17/2025	Restricted Stock Vesting	Issuer			485	04/17/2025	Compensation
Common	07/15/2025	Restricted Stock Vesting	Issuer			553	07/15/2025	Compensation
Common	09/12/2025	ESPP Purchase	Issuer			90	09/12/2025	Cash

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Paul M. Blanchfield 201 Burlington Road South Building Bedford MA 01730	Common	11/14/2025	16530	871106.26
Paul M. Blanchfield 201 Burlington Road South Building Bedford MA 01730	Common	11/26/2025	11776	686664.45
Paul M. Blanchfield 201 Burlington Road South Building Bedford MA 01730	Common	12/12/2025	3265	218150.98
Paul M. Blanchfield 201 Burlington Road South Building Bedford MA 01730	Common	01/06/2026	7217	501798.01

144: Remarks and Signature

Remarks
Date of Notice	02/02/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Jared Cook, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Paul M. Blanchfield
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)