LNTH

SEC source: 0000899243-23-009990 · doc4.xml · nonDerivative · entry 2

Heino Mary Anne · CIK 0001610676 · Director · CEO

10b5-1 filing: No plan indicated

Ownership: Indirect · Common Stock

Disclosed balance after: 435,219

F1 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 24, 2023.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $79.89 to $80.88, inclusive. The reporting person undertakes to provide to Lantheus Holdings, Inc. ("LNTH") any security holder of LNTH or the staff of the Securities and Exchange Commission ("SEC"), upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote (3) to this Form 4.

SEC source: 0000899243-23-009990 · doc4.xml · nonDerivative · entry 1

Heino Mary Anne · CIK 0001610676 · Director · CEO

10b5-1 filing: No plan indicated

Ownership: Indirect · Common Stock

Disclosed balance after: 463,881

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 24, 2023.

F2 · balance_after: On March 10, 2023, the reporting person transferred 300,000 shares of LNTH common stock to a Grantor Retained Annuity Trust of which the reporting person's spouse is a trustee. The reporting person and members of her immediate family are the sole beneficiaries of the trust.

SEC source: 0000899243-23-008877 · doc4.xml · nonDerivative · entry 1

Sabens Andrea · CIK 0001876279 · Chief Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 62,290

F1 · kind: The transaction reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 13, 2022.

SEC source: 0000899243-23-008878 · doc4.xml · nonDerivative · entry 1

Marshall Robert J. Jr. · CIK 0001754976 · CFO and Treasurer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 128,298

F1 · kind: The transaction reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 25, 2022.

SEC source: 0000899243-23-008147 · doc4.xml · nonDerivative · entry 2

Heino Mary Anne · CIK 0001610676 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 719,397

F1 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 11, 2022.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $74.82 to $75.69, inclusive. The reporting person undertakes to provide to LNTH any security holder of LNTH or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote (3) to this Form 4.

SEC source: 0000899243-23-008147 · doc4.xml · nonDerivative · entry 1

Heino Mary Anne · CIK 0001610676 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 724,141

F1 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 11, 2022.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $73.75 to $74.69, inclusive. The reporting person undertakes to provide to Lantheus Holdings, Inc. ("LNTH") any security holder of LNTH or the staff of the Securities and Exchange Commission ("SEC"), upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote (2) to this Form 4.

SEC source: 0000899243-23-007597 · doc4.xml · nonDerivative · entry 2

Sabens Andrea · CIK 0001876279 · Chief Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 62,676

F1 · kind: The Company requires certain senior executives to cover tax liabilities resulting from the vesting of their equity awards pursuant to sell-to-cover transactions in compliance with Rule 10b5-1. The transactions reported in this Form 4 were effected in compliance with Rule 10b5-1 to satisfy withholding tax liabilities of the Reporting Person associated with the vesting of restricted stock previously granted and reported on a previously filed Form 4.

SEC source: 0000899243-23-007600 · doc4.xml · nonDerivative · entry 2

Montagut Etienne · CIK 0001861389 · Chief Business Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 87,294

F1 · kind: The Company requires certain senior executives to cover tax liabilities resulting from the vesting of their equity awards pursuant to sell-to-cover transactions in compliance with Rule 10b5-1. The transactions reported in this Form 4 were effected in compliance with Rule 10b5-1 to satisfy withholding tax liabilities of the Reporting Person associated with the vesting of restricted stock previously granted and reported on a previously filed Form 4.

SEC source: 0000899243-23-007598 · doc4.xml · nonDerivative · entry 2

Niedzwiecki Daniel · CIK 0001861113 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 74,870

F1 · kind: The Company requires certain senior executives to cover tax liabilities resulting from the vesting of their equity awards pursuant to sell-to-cover transactions in compliance with Rule 10b5-1. The transactions reported in this Form 4 were effected in compliance with Rule 10b5-1 to satisfy withholding tax liabilities of the Reporting Person associated with the vesting of restricted stock previously granted and reported on a previously filed Form 4.

SEC source: 0000899243-23-007602 · doc4.xml · nonDerivative · entry 2

Blanchfield Paul · CIK 0001801395 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 86,343

F1 · kind: The Company requires certain senior executives to cover tax liabilities resulting from the vesting of their equity awards pursuant to sell-to-cover transactions in compliance with Rule 10b5-1. The transactions reported in this Form 4 were effected in compliance with Rule 10b5-1 to satisfy withholding tax liabilities of the Reporting Person associated with the vesting of restricted stock previously granted and reported on a previously filed Form 4.

SEC source: 0000899243-23-007601 · doc4.xml · nonDerivative · entry 2

Marshall Robert J. Jr. · CIK 0001754976 · CFO and Treasurer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 133,298

F1 · kind: The Company requires certain senior executives to cover tax liabilities resulting from the vesting of their equity awards pursuant to sell-to-cover transactions in compliance with Rule 10b5-1. The transactions reported in this Form 4 were effected in compliance with Rule 10b5-1 to satisfy withholding tax liabilities of the Reporting Person associated with the vesting of restricted stock previously granted and reported on a previously filed Form 4.

SEC source: 0000899243-23-007259 · doc4.xml · nonDerivative · entry 5

Heino Mary Anne · CIK 0001610676 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 729,461

F3 · kind: The Company requires certain senior executives to cover tax liabilities resulting from the vesting of their equity awards pursuant to sell-to-cover transactions in compliance with Rule 10b5-1. The transaction reported in this Form 4 was effected in compliance with Rule 10b5-1 to satisfy withholding tax liabilities of the Reporting Person associated with the vesting of restricted stock previously granted and reported on a previously filed Form 4.

F6 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $71.69 to $72.6, inclusive. The reporting person undertakes to provide to LNTH any security holder of LNTH or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote (6) to this Form 4.

SEC source: 0000899243-23-007597 · doc4.xml · nonDerivative · entry 1

Sabens Andrea · CIK 0001876279 · Chief Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 63,626

F1 · kind: The Company requires certain senior executives to cover tax liabilities resulting from the vesting of their equity awards pursuant to sell-to-cover transactions in compliance with Rule 10b5-1. The transactions reported in this Form 4 were effected in compliance with Rule 10b5-1 to satisfy withholding tax liabilities of the Reporting Person associated with the vesting of restricted stock previously granted and reported on a previously filed Form 4.

SEC source: 0000899243-23-007600 · doc4.xml · nonDerivative · entry 1

Montagut Etienne · CIK 0001861389 · Chief Business Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 90,825

F1 · kind: The Company requires certain senior executives to cover tax liabilities resulting from the vesting of their equity awards pursuant to sell-to-cover transactions in compliance with Rule 10b5-1. The transactions reported in this Form 4 were effected in compliance with Rule 10b5-1 to satisfy withholding tax liabilities of the Reporting Person associated with the vesting of restricted stock previously granted and reported on a previously filed Form 4.

SEC source: 0000899243-23-007598 · doc4.xml · nonDerivative · entry 1

Niedzwiecki Daniel · CIK 0001861113 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 75,925

F1 · kind: The Company requires certain senior executives to cover tax liabilities resulting from the vesting of their equity awards pursuant to sell-to-cover transactions in compliance with Rule 10b5-1. The transactions reported in this Form 4 were effected in compliance with Rule 10b5-1 to satisfy withholding tax liabilities of the Reporting Person associated with the vesting of restricted stock previously granted and reported on a previously filed Form 4.

SEC source: 0000899243-23-007602 · doc4.xml · nonDerivative · entry 1

Blanchfield Paul · CIK 0001801395 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 89,101

F1 · kind: The Company requires certain senior executives to cover tax liabilities resulting from the vesting of their equity awards pursuant to sell-to-cover transactions in compliance with Rule 10b5-1. The transactions reported in this Form 4 were effected in compliance with Rule 10b5-1 to satisfy withholding tax liabilities of the Reporting Person associated with the vesting of restricted stock previously granted and reported on a previously filed Form 4.

SEC source: 0000899243-23-007601 · doc4.xml · nonDerivative · entry 1

Marshall Robert J. Jr. · CIK 0001754976 · CFO and Treasurer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 138,152

F1 · kind: The Company requires certain senior executives to cover tax liabilities resulting from the vesting of their equity awards pursuant to sell-to-cover transactions in compliance with Rule 10b5-1. The transactions reported in this Form 4 were effected in compliance with Rule 10b5-1 to satisfy withholding tax liabilities of the Reporting Person associated with the vesting of restricted stock previously granted and reported on a previously filed Form 4.

SEC source: 0000899243-23-007262 · doc4.xml · nonDerivative · entry 2

Sabens Andrea · CIK 0001876279 · Chief Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 71,331

F2 · kind: The transaction reported in this Form 4 reflects additional shares of common stock issued by the Company to the reporting person upon the vesting of relative Total Shareholder Return PSUs that were previously granted and included in the Form 3 filed upon the reporting person becoming a Section 16 officer. The number of shares reported in the Form 3 reflected 100% of the target number of shares underlying the PSUs. The number of shares that actually vested under the PSUs equaled 200% of the target number of shares. Accordingly, the number of shares reported in this Form 4 reflects the difference between the number of shares that actually vested under the PSUs and the target number of shares originally included in the Form 3.

SEC source: 0000899243-23-007266 · doc4.xml · nonDerivative · entry 2

Montagut Etienne · CIK 0001861389 · Chief Business Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 105,004

F2 · kind: The transaction reported in this Form 4 reflects additional shares of common stock issued by the Company to the reporting person upon the vesting of relative Total Shareholder Return PSUs that were previously granted and included in the Form 3 filed upon the reporting person becoming a Section 16 officer. The number of shares reported in the Form 3 reflected 100% of the target number of shares underlying the PSUs. The number of shares that actually vested under the PSUs equaled 200% of the target number of shares. Accordingly, the number of shares reported in this Form 4 reflects the difference between the number of shares that actually vested under the PSUs and the target number of shares originally included in the Form 3.

SEC source: 0000899243-23-007264 · doc4.xml · nonDerivative · entry 2

Niedzwiecki Daniel · CIK 0001861113 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 85,004

F2 · kind: The transaction reported in this Form 4 reflects additional shares of common stock issued by the Company to the reporting person upon the vesting of relative Total Shareholder Return PSUs that were previously granted and included in the Form 3 filed upon the reporting person becoming a Section 16 officer. The number of shares reported in the Form 3 reflected 100% of the target number of shares underlying the PSUs. The number of shares that actually vested under the PSUs equaled 200% of the target number of shares. Accordingly, the number of shares reported in this Form 4 reflects the difference between the number of shares that actually vested under the PSUs and the target number of shares originally included in the Form 3.

SEC source: 0000899243-23-007268 · doc4.xml · nonDerivative · entry 2

Marshall Robert J. Jr. · CIK 0001754976 · CFO and Treasurer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 158,739

F2 · kind: The transaction reported in this Form 4 reflects additional shares of common stock issued by the Company to the reporting person upon the vesting of relative Total Shareholder Return PSUs that were previously granted and included in the Form 4 filed on March 5, 2020. The number of shares reported in the Form 4 reflected 100% of the target number of shares underlying the PSUs. The number of shares that actually vested under the PSUs equaled 200% of the target number of shares. Accordingly, the number of shares reported in this Form 4 reflects the difference between the number of shares that actually vested under the PSUs and the target number of shares originally included in the Form 4.

SEC source: 0000899243-23-007259 · doc4.xml · nonDerivative · entry 4

Heino Mary Anne · CIK 0001610676 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 741,650

F3 · kind: The Company requires certain senior executives to cover tax liabilities resulting from the vesting of their equity awards pursuant to sell-to-cover transactions in compliance with Rule 10b5-1. The transaction reported in this Form 4 was effected in compliance with Rule 10b5-1 to satisfy withholding tax liabilities of the Reporting Person associated with the vesting of restricted stock previously granted and reported on a previously filed Form 4.

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $73.14 to $73.99, inclusive. The reporting person undertakes to provide to LNTH any security holder of LNTH or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote (5) to this Form 4.

SEC source: 0000899243-23-007259 · doc4.xml · nonDerivative · entry 3

Heino Mary Anne · CIK 0001610676 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 759,047

F3 · kind: The Company requires certain senior executives to cover tax liabilities resulting from the vesting of their equity awards pursuant to sell-to-cover transactions in compliance with Rule 10b5-1. The transaction reported in this Form 4 was effected in compliance with Rule 10b5-1 to satisfy withholding tax liabilities of the Reporting Person associated with the vesting of restricted stock previously granted and reported on a previously filed Form 4.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $72.14 to $73.135, inclusive. The reporting person undertakes to provide to Lantheus Holdings, Inc. ("LNTH") any security holder of LNTH or the staff of the Securities and Exchange Commission ("SEC"), upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote (4) to this Form 4.

SEC source: 0000899243-23-007259 · doc4.xml · nonDerivative · entry 2

Heino Mary Anne · CIK 0001610676 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 823,705

F2 · kind: The transaction reported in this Form 4 reflects additional shares of common stock issued by the Company to the reporting person upon the vesting of relative Total Shareholder Return PSUs that were previously granted and included in the Form 4 filed on March 5, 2020. The number of shares reported in the Form 4 reflected 100% of the target number of shares underlying the PSUs. The number of shares that actually vested under the PSUs equaled 200% of the target number of shares. Accordingly, the number of shares reported in this Form 4 reflects the difference between the number of shares that actually vested under the PSUs and the target number of shares originally included in the Form 4.

SEC source: 0000899243-23-007262 · doc4.xml · derivative · entry 3

Sabens Andrea · CIK 0001876279 · Chief Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,936

Underlying: Common Stock · 1,936 shares

Expires 2033-03-02

F3 · derivative.exercise_date: The option vests in three equal annual installments beginning on March 2, 2024.

SEC source: 0000899243-23-007262 · doc4.xml · nonDerivative · entry 1

Sabens Andrea · CIK 0001876279 · Chief Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 64,232

F1 · kind: Consists of 1,557 restricted stock units that vest in equal installments over a three-year period and 2,215 Total Shareholder Return performance-based restricted stock units ("PSUs") that cliff vest following a three-year performance period. The amount of PSUs included in this Report reflects the target award, however the ultimate award size can range from 0% to 200% of the target based on the actual performance achieved at the end of the performance period.

SEC source: 0000899243-23-007266 · doc4.xml · derivative · entry 3

Montagut Etienne · CIK 0001861389 · Chief Business Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,141

Underlying: Common Stock · 8,141 shares

Expires 2033-03-02

F3 · derivative.exercise_date: The option vests in three equal annual installments beginning on March 2, 2024.

SEC source: 0000899243-23-007266 · doc4.xml · nonDerivative · entry 1

Montagut Etienne · CIK 0001861389 · Chief Business Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 92,643

F1 · kind: Consists of 4,656 restricted stock units that vest in equal installments over a three-year period and 9,312 Total Shareholder Return performance-based restricted stock units ("PSUs") that cliff vest following a three-year performance period. The amount of PSUs included in this Report reflects the target award, however the ultimate award size can range from 0% to 200% of the target based on the actual performance achieved at the end of the performance period.

SEC source: 0000899243-23-007264 · doc4.xml · derivative · entry 3

Niedzwiecki Daniel · CIK 0001861113 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,196

Underlying: Common Stock · 7,196 shares

Expires 2033-03-02

F3 · derivative.exercise_date: The option vests in three equal annual installments beginning on March 2, 2024.

SEC source: 0000899243-23-007263 · doc4.xml · derivative · entry 2

Blanchfield Paul · CIK 0001801395 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 11,880

Underlying: Common Stock · 11,880 shares

Expires 2033-03-02

F2 · derivative.exercise_date: The option vests in three equal annual installments beginning on March 2, 2024.

SEC source: 0000899243-23-007263 · doc4.xml · nonDerivative · entry 1

Blanchfield Paul · CIK 0001801395 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 94,351

F1 · kind: Consists of 6,794 restricted stock units that vest in equal installments over a three-year period and 13,589 Total Shareholder Return performance-based restricted stock units ("PSUs") that cliff vest following a three-year performance period. The amount of PSUs included in this Report reflects the target award, however the ultimate award size can range from 0% to 200% of the target based on the actual performance achieved at the end of the performance period.

SEC source: 0000899243-23-007268 · doc4.xml · derivative · entry 3

Marshall Robert J. Jr. · CIK 0001754976 · CFO and Treasurer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 11,822

Underlying: Common Stock · 11,822 shares

Expires 2033-03-02

F3 · derivative.exercise_date: The option vests in three equal annual installments beginning on March 2, 2024.

SEC source: 0000899243-23-007268 · doc4.xml · nonDerivative · entry 1

Marshall Robert J. Jr. · CIK 0001754976 · CFO and Treasurer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 141,348

F1 · kind: Consists of 6,761 restricted stock units that vest in equal installments over a three-year period and 13,522 Total Shareholder Return performance-based restricted stock units ("PSUs") that cliff vest following a three-year performance period. The amount of PSUs included in this Report reflects the target award, however the ultimate award size can range from 0% to 200% of the target based on the actual performance achieved at the end of the performance period.

SEC source: 0000899243-23-007265 · doc4.xml · derivative · entry 2

Provost Jean-Claude · CIK 0001960060 · Chief Medical Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By Theranostics Consulting SAS

Disclosed balance after: 9,535

Underlying: Common Stock · 9,535 shares

Expires 2033-03-02

F2 · shares: The reporting person is the managing partner of the company that owns the reported securities. The reporting person disclaims beneficial ownership of the reported securities except to the extent of his pecuniary interest therein.

F3 · derivative.exercise_date: The option vests in three equal annual installments beginning on March 2, 2024.

SEC source: 0000899243-23-007265 · doc4.xml · nonDerivative · entry 1

Provost Jean-Claude · CIK 0001960060 · Chief Medical Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By Theranostics Consulting SAS

Disclosed balance after: 20,823

F1 · kind: Consists of 5,453 restricted stock units that vest in equal installments over a three-year period and 10,906 Total Shareholder Return performance-based restricted stock units ("PSUs") that cliff vest following a three-year performance period. The amount of PSUs included in this Report reflects the target award, however the ultimate award size can range from 0% to 200% of the target based on the actual performance achieved at the end of the performance period.

F2 · shares: The reporting person is the managing partner of the company that owns the reported securities. The reporting person disclaims beneficial ownership of the reported securities except to the extent of his pecuniary interest therein.

SEC source: 0000899243-23-007259 · doc4.xml · derivative · entry 6

Heino Mary Anne · CIK 0001610676 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 44,696

Underlying: Common Stock · 44,696 shares

Expires 2033-03-02

F7 · derivative.exercise_date: The option vests in three equal annual installments beginning on March 2, 2024.

SEC source: 0000899243-23-007259 · doc4.xml · nonDerivative · entry 1

Heino Mary Anne · CIK 0001610676 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 749,219

F1 · kind: Consists of 25,562 restricted stock units that vest in equal installments over a three-year period and 51,124 Total Shareholder Return performance-based restricted stock units ("PSUs") that cliff vest following a three-year performance period. The amount of PSUs included in this Report reflects the target award, however the ultimate award size can range from 0% to 200% of the target based on the actual performance achieved at the end of the performance period.

SEC source: 0000899243-23-005474 · doc4.xml · nonDerivative · entry 1

Sabens Andrea · CIK 0001876279 · Chief Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 60,460

F1 · kind: The transaction reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 13, 2022.

SEC source: 0000899243-23-002168 · doc4.xml · nonDerivative · entry 1

Sabens Andrea · CIK 0001876279 · Chief Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 60,846

F1 · kind: The transaction reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 13, 2023.

SEC source: 0000899243-22-038990 · doc4.xml · nonDerivative · entry 1

Sabens Andrea · CIK 0001876279 · Chief Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 61,232

F1 · kind: The transaction reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 13, 2022.

SEC source: 0000899243-22-036517 · doc4.xml · nonDerivative · entry 1

Blanchfield Paul · CIK 0001801395 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 73,968

F1 · kind: The transaction reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 3, 2022.

F2 · balance_after: Includes 257 shares acquired under the LNTH employee stock purchase plan on September 16, 2022.

SEC source: 0000899243-22-036190 · doc4.xml · nonDerivative · entry 1

Sabens Andrea · CIK 0001876279 · Chief Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 61,618

F1 · kind: The transaction reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 13, 2022.

SEC source: 0000899243-22-036191 · doc4.xml · nonDerivative · entry 1

Marshall Robert J. Jr. · CIK 0001754976 · CFO and Treasurer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 121,065

F1 · kind: The transaction reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 25, 2022.

SEC source: 0000899243-22-035872 · doc4.xml · nonDerivative · entry 1

Niedzwiecki Daniel · CIK 0001861113 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 65,143

F1 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 9, 2022.

SEC source: 0000899243-22-035521 · doc4.xml · nonDerivative · entry 4

Heino Mary Anne · CIK 0001610676 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 672,533

F1 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 11, 2022.

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $58.38 to $58.97, inclusive. The reporting person undertakes to provide to LNTH, any security holder of LNTH, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote (5) to this Form 4.

SEC source: 0000899243-22-035521 · doc4.xml · nonDerivative · entry 3

Heino Mary Anne · CIK 0001610676 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 674,049

F1 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 11, 2022.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $57.36 to $58.35, inclusive. The reporting person undertakes to provide to LNTH, any security holder of LNTH, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote (4) to this Form 4.

SEC source: 0000899243-22-035521 · doc4.xml · nonDerivative · entry 2

Heino Mary Anne · CIK 0001610676 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 678,933

F1 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 11, 2022.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $56.36 to $57.31, inclusive. The reporting person undertakes to provide to LNTH, any security holder of LNTH, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote (3) to this Form 4.

SEC source: 0000899243-22-035521 · doc4.xml · nonDerivative · entry 1

Heino Mary Anne · CIK 0001610676 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 683,683

F1 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 11, 2022.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $55.36 to $56.33, inclusive. The reporting person undertakes to provide to Lantheus Holdings, Inc., ("LNTH"), any security holder of LNTH, or the staff of the Securities and Exchange Commission ("SEC"), upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote (2) to this Form 4.

SEC source: 0000899243-22-033884 · doc4.xml · nonDerivative · entry 2

Montagut Etienne · CIK 0001861389 · Chief Business Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 78,675

F3 · kind: This transaction reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 2, 2022.

SEC source: 0000899243-22-033884 · doc4.xml · nonDerivative · entry 1

Montagut Etienne · CIK 0001861389 · Chief Business Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 81,999

F1 · kind: The Company requires certain senior executives to cover tax liabilities resulting from the vesting of their equity awards pursuant to sell-to-cover transactions in compliance with Rule 10b5-1. The transaction reported in this Form 4 was effected in compliance with Rule 10b5-1 to satisfy withholding tax liabilities of the Reporting Person associated with the vesting of restricted stock previously granted and reported on a previously filed Form 4.

F2 · balance_after: Includes 345 shares acquired under the LNTH employee stock purchase plan on March 11, 2022 and 215 shares acquired under the LNTH employee stock purchase plan on September 16, 2022.