Niedzwiecki Daniel

SEC source: 0002064832-26-000171 · form4.xml · nonDerivative · entry 1

Niedzwiecki Daniel · CIK 0001861113 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 117,465

SEC source: 0002064832-26-000125 · form4.xml · nonDerivative · entry 2

Niedzwiecki Daniel · CIK 0001861113 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 119,376

SEC source: 0002064832-26-000125 · form4.xml · nonDerivative · entry 1

Niedzwiecki Daniel · CIK 0001861113 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 120,659

F1 · kind: Consists of 18,346 restricted stock units that vest in equal installments over a three-year period and 18,346 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: 0002064832-26-000113 · form4.xml · nonDerivative · entry 2

Niedzwiecki Daniel · CIK 0001861113 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 83,967

SEC source: 0002064832-26-000113 · form4.xml · nonDerivative · entry 1

Niedzwiecki Daniel · CIK 0001861113 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 92,226

F1 · kind: The transaction reported in this Form 4 reflects additional shares of common stock issued by Lantheus Holdings, Inc. to the reporting person upon the vesting of relative Total Shareholder Return performance-based restricted stock units ("PSUs") that were previously granted and included in the Form 4 filed on March 6, 2023. 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 162.8% 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: 0001062993-25-011827 · form4.xml · nonDerivative · entry 1

Niedzwiecki Daniel · CIK 0001861113 · See Remarks

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 87,057

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 6, 2025.

SEC source: 0001062993-25-011241 · form4.xml · nonDerivative · entry 1

Niedzwiecki Daniel · CIK 0001861113 · See Remarks

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 93,057

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 6, 2025.

SEC source: 0001062993-25-007716 · form4.xml · nonDerivative · entry 1

Niedzwiecki Daniel · CIK 0001861113 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 99,057

SEC source: 0001062993-25-004987 · form4.xml · derivative · entry 2

Niedzwiecki Daniel · CIK 0001861113 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,927

Underlying: Common Stock · 13,927 shares

Expires 2035-03-05

F2 · derivative.exercise_date: The option vests in three equal annual installments beginning on March 5, 2026.

SEC source: 0001062993-25-004987 · form4.xml · nonDerivative · entry 1

Niedzwiecki Daniel · CIK 0001861113 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 99,235

F1 · kind: Consists of 7,961 restricted stock units that vest in equal installments over a three-year period and 15,923 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: 0001062993-25-004628 · form4.xml · nonDerivative · entry 2

Niedzwiecki Daniel · CIK 0001861113 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 75,351

SEC source: 0001062993-25-004628 · form4.xml · nonDerivative · entry 1

Niedzwiecki Daniel · CIK 0001861113 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 88,258

F1 · kind: The transaction reported in this Form 4 reflects additional shares of common stock issued by Lantheus Holdings, Inc. ("LNTH") to the reporting person upon the vesting of relative Total Shareholder Return performance-based restricted stock units ("PSUs") that were previously granted and included in the Form 4 filed on March 7, 2022. 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: 0000950170-24-098083 · ownership.xml · nonDerivative · entry 1

Niedzwiecki Daniel · CIK 0001861113 · See Remarks

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 77,744

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 1, 2024.

SEC source: 0000950170-24-068031 · ownership.xml · nonDerivative · entry 1

Niedzwiecki Daniel · CIK 0001861113 · See Remarks

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 80,244

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 1, 2024.

SEC source: 0000950170-24-062957 · ownership.xml · nonDerivative · entry 1

Niedzwiecki Daniel · CIK 0001861113 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 93,117

SEC source: 0000950170-24-049215 · ownership.xml · nonDerivative · entry 1

Niedzwiecki Daniel · CIK 0001861113 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 94,583

SEC source: 0000950170-24-028035 · ownership.xml · nonDerivative · entry 1

Niedzwiecki Daniel · CIK 0001861113 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 94,760

SEC source: 0000950170-24-026647 · ownership.xml · nonDerivative · entry 2

Niedzwiecki Daniel · CIK 0001861113 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 103,217

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: 0000950170-24-026647 · ownership.xml · derivative · entry 3

Niedzwiecki Daniel · CIK 0001861113 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 18,043

Underlying: Common Stock · 18,043 shares

Expires 2034-03-01

F3 · derivative.exercise_date: The option vests in three equal annual installments beginning on March 1, 2025.

SEC source: 0000950170-24-026647 · ownership.xml · nonDerivative · entry 1

Niedzwiecki Daniel · CIK 0001861113 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 96,751

F1 · kind: Consists of 10,152 restricted stock units that vest in equal installments over a three-year period and 20,304 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: 0000950170-23-048794 · ownership.xml · derivative · entry 3

Niedzwiecki Daniel · CIK 0001861113 · See Remarks

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 2,846 shares

Expires 2023-11-06

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 · derivative.exercise_date: The stock options under this grant vested in equal installments over a four-year period beginning on November 6, 2013.

SEC source: 0000950170-23-048794 · ownership.xml · nonDerivative · entry 2

Niedzwiecki Daniel · CIK 0001861113 · See Remarks

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 66,295

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.

SEC source: 0000950170-23-048794 · ownership.xml · nonDerivative · entry 1

Niedzwiecki Daniel · CIK 0001861113 · See Remarks

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 69,141

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.

SEC source: 0000950170-23-042853 · ownership.xml · nonDerivative · entry 1

Niedzwiecki Daniel · CIK 0001861113 · See Remarks

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 66,295

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.

SEC source: 0000950170-23-023507 · ownership.xml · nonDerivative · entry 1

Niedzwiecki Daniel · CIK 0001861113 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 70,592

SEC source: 0000899243-23-012988 · doc4.xml · nonDerivative · entry 1

Niedzwiecki Daniel · CIK 0001861113 · See Remarks

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 72,058

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.

SEC source: 0000950170-23-013529 · ownership.xml · derivative · entry 2

Niedzwiecki Daniel · CIK 0001861113 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,960

Underlying: Common Stock · 1,960 shares

Expires 2033-04-16

F2 · derivative.exercise_date: The option vests in three equal annual installments beginning on April 17, 2024.

SEC source: 0000950170-23-013529 · ownership.xml · nonDerivative · entry 1

Niedzwiecki Daniel · CIK 0001861113 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 78,171

F1 · kind: Consists of 1,100 restricted stock units that vest in equal installments over a three-year period and 2,201 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: 0000899243-23-007598 · 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: 0000899243-23-007598 · 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: 0000899243-23-007264 · 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: 0000899243-23-007264 · 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: 0000899243-22-035872 · 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: 0000899243-22-028654 · doc4.xml · nonDerivative · entry 1

Niedzwiecki Daniel · CIK 0001861113 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 68,143

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: 0000899243-22-019029 · doc4.xml · nonDerivative · entry 1

Niedzwiecki Daniel · CIK 0001861113 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 71,143

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.

SEC source: 0000899243-22-010187 · doc4.xml · nonDerivative · entry 2

Niedzwiecki Daniel · CIK 0001861113 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 72,523

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.

SEC source: 0000899243-22-010187 · doc4.xml · nonDerivative · entry 1

Niedzwiecki Daniel · CIK 0001861113 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 72,955

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.

SEC source: 0000899243-22-009815 · doc4.xml · derivative · entry 2

Niedzwiecki Daniel · CIK 0001861113 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,992

Underlying: Common Stock · 8,992 shares

Expires 2032-03-03

F2 · derivative.exercise_date: The option vests in three equal annual installments beginning on March 3, 2023.

SEC source: 0000899243-22-009815 · doc4.xml · nonDerivative · entry 1

Niedzwiecki Daniel · CIK 0001861113 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 74,285

F1 · shares: Consists of 5,257 restricted stock units that vest in equal installments over a three-year period and 10,514 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 · nonDerivative · entry 1

Niedzwiecki Daniel · CIK 0001861113 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 77,489

F1 · kind: Consists of 4,115 restricted stock units that vest in equal installments over a three-year period and 8,231 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: 0000899243-22-008809 · doc4.xml · nonDerivative · entry 2

Niedzwiecki Daniel · CIK 0001861113 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 58,514

F2 · 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.

SEC source: 0000899243-22-008809 · doc4.xml · nonDerivative · entry 1

Niedzwiecki Daniel · CIK 0001861113 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 61,159

F1 · shares: 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 performance-based restricted stock units ("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 188% 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: 0000899243-21-033453 · doc4.xml · nonDerivative · entry 1

Niedzwiecki Daniel · CIK 0001861113 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 57,060

F1 · kind: The transaction reported on this Form 4 represents the disposition of shares withheld by the Company 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: 0000899243-21-019923 · doc4.xml · nonDerivative · entry 1

Niedzwiecki Daniel · CIK 0001861113 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 57,303