Rajiv A. Patel - 19 Aug 2025 Form 4 Insider Report for Lantheus Holdings, Inc. (LNTH)

Reporting relationship: Member of a Group Owning 10%
Issuer ticker: LNTH
Reported as of: 19 Aug 2025
Net transaction value: -$191,213,690
SEC form: 4
Accepted by SEC: 21 Aug 2025, 17:27:34 UTC
Prior SEC filing: 18 Aug 2025
Source filing: View source filing
Reporting owner signature: /s/ Hannah E. Dunn, as attorney-in-fact

Key filing fact

Rajiv A. Patel filed Form 4 for Lantheus Holdings, Inc. (LNTH) on 21 Aug 2025.

Key facts

This page summarizes Rajiv A. Patel's Form 4 filing for Lantheus Holdings, Inc. (LNTH).
2 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 21 Aug 2025, 17:27.

Change

Previous filing in this sequence was filed on 18 Aug 2025.
Current net transaction value: -$191,213,690.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (8)

CIK 0001275110 Primary reporting owner

PATEL RAJIV A

Relationship: Member of a Group Owning 10%
Address: C/O FARALLON CAPITAL MANAGEMENT, L.L.C., ONE MARITIME PLAZA, SUITE 2100, SAN FRANCISCO
Signature: /s/ Hannah E. Dunn, as attorney-in-fact
Signature date: 21 Aug 2025

CIK 0001453042

Roberts Thomas G. Jr.

Relationship: Member of a Group Owning 10%
Address: C/O FARALLON CAPITAL MANAGEMENT, L.L.C., ONE MARITIME PLAZA, SUITE 2100, SAN FRANCISCO
Signature: /s/ Hannah E. Dunn, as attorney-in-fact
Signature date: 21 Aug 2025

CIK 0001960819

Saito Edric C.

Relationship: Member of a Group Owning 10%
Address: C/O FARALLON CAPITAL MANAGEMENT, L.L.C., ONE MARITIME PLAZA, SUITE 2100, SAN FRANCISCO
Signature: /s/ Hannah E. Dunn, as attorney-in-fact
Signature date: 21 Aug 2025

CIK 0001693980

Seybold William

Relationship: Member of a Group Owning 10%
Address: C/O FARALLON CAPITAL MANAGEMENT, L.L.C., ONE MARITIME PLAZA, SUITE 2100, SAN FRANCISCO
Signature: /s/ Hannah E. Dunn, as attorney-in-fact
Signature date: 21 Aug 2025

CIK 0001960871

Short Daniel S.

Relationship: Member of a Group Owning 10%
Address: C/O FARALLON CAPITAL MANAGEMENT, L.L.C., ONE MARITIME PLAZA, SUITE 2100, SAN FRANCISCO
Signature: /s/ Hannah E. Dunn, as attorney-in-fact
Signature date: 21 Aug 2025

CIK 0001372968

Spokes Andrew J M

Relationship: Member of a Group Owning 10%
Address: C/O FARALLON CAPITAL MANAGEMENT, L.L.C., ONE MARITIME PLAZA, SUITE 2100, SAN FRANCISCO
Signature: /s/ Hannah E. Dunn, as attorney-in-fact
Signature date: 21 Aug 2025

CIK 0001509711

Warren John R.

Relationship: Member of a Group Owning 10%
Address: C/O FARALLON CAPITAL MANAGEMENT, L.L.C., ONE MARITIME PLAZA, SUITE 2100, SAN FRANCISCO
Signature: /s/ Hannah E. Dunn, as attorney-in-fact
Signature date: 21 Aug 2025

CIK 0001245635

WEHRLY MARK C

Relationship: Member of a Group Owning 10%
Address: C/O FARALLON CAPITAL MANAGEMENT, L.L.C., ONE MARITIME PLAZA, SUITE 2100, SAN FRANCISCO
Signature: /s/ Hannah E. Dunn, as attorney-in-fact
Signature date: 21 Aug 2025

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

LNTH transaction

Common Stock

Sale

Transaction value: $2,268,940
Shares: -41,000
Change %: -0.6%
Price: $55.34
Shares after: 6,842,227
Date: 19 Aug 2025
Ownership: See Footnotes
Footnotes: F1, F2, F3, F4, F5

LNTH transaction

Common Stock

Sale

Transaction value: $188,944,750
Shares: -3,365,000
Change %: -49%
Price: $56.15
Shares after: 3,477,227
Date: 20 Aug 2025
Ownership: See Footnotes
Footnotes: F1, F2, F3, F4, F5, F6

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Section 16 status

Rajiv A. Patel is no longer subject to Section 16 filing requirements. Form 4 or Form 5 obligations may still apply in specific circumstances.

Explanation of responses 6 footnotes

Footnote F1

The entities and individuals identified in the footnotes of this Form 4 may be deemed members of a group holding equity securities of Lantheus Holdings, Inc. (the "Issuer"). The filing of this Form 4 and any statements included herein shall not be deemed to be an admission that such entities and individuals are members of such a group.

Footnote F2

Since the number of reporting persons that may be listed on a Form 4 is limited, the entities and individuals listed in these footnotes that are not reporting persons on this Form 4 are filing an additional Form 4 on the date hereof as reporting persons with respect to the securities described herein (the "Parallel Form 4"). Information regarding these entities and individuals is included in this Form 4 for purposes of clarification and convenience only, and is duplicative of the information reported in the Parallel Form 4.

Footnote F3

The amount of securities shown in this row is held directly by certain investment funds affiliated with the reporting persons (the "Farallon Funds").

Footnote F4

Farallon Partners, L.L.C. and certain affiliated entities (the "Farallon General Partners"), as general partner or sole member of the general partner, as the case may be, of each of the Farallon Funds, may be deemed to be a beneficial owner of the Issuer's securities held by the Farallon Funds. The Farallon General Partners disclaim any beneficial ownership of any of the Issuer's securities reported or noted herein for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the "'34 Act"), or otherwise, except to the extent of their pecuniary interest, if any.

Footnote F5

Each of Joshua J. Dapice, Philip D. Dreyfuss, Hannah E. Dunn, Richard B. Fried, Varun N. Gehani, Nicolas Giauque, David T. Kim, Michael G. Linn, Patrick (Cheng) Luo, Rajiv A. Patel, Thomas G. Roberts, Jr., Edric C. Saito, William Seybold, Daniel S. Short, Andrew J. M. Spokes, John R. Warren, and Mark C. Wehrly (collectively, the "Managing Members"), as a managing member or manager, or senior managing member or senior manager, as the case may be, of each of the Farallon General Partners, in each case with the power to exercise investment discretion, may be deemed to be a beneficial owner of the Issuer's securities held by the Farallon Funds. Each of the Managing Members disclaims any beneficial ownership of any of the Issuer's securities reported or noted herein for purposes of Section 16 of the '34 Act or otherwise, except to the extent of his or her pecuniary interest, if any.

Footnote F6

The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $56.14 to $56.55, inclusive. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range.