Daniel Niedzwiecki

CIK: 0001861113

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)2 (18.2%)

Position reduction

Option Exercises (M)0 (0.0%)

Derivative conversions

Awards (A)4 (36.4%)

Compensation grants

Other (G, F, J, C, D, …)5 (45.5%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (1)

LNTH

Lantheus Holdings, Inc.

Officer

Discretionary Trading P&L

Holdings

Transaction History (11 total)

LNTH
Lantheus Holdings, Inc.
Apr 17, 2026
Tax Payment(F)
Direct
1.9K shares at avg. $83.82$160K
LNTH
Lantheus Holdings, Inc.
Mar 5, 2026
Tax Payment(F)
Direct
1.3K shares at avg. $76.31$98K
LNTH
Lantheus Holdings, Inc.
Mar 5, 2026
Award(A)
Direct
36.7K shares-
LNTH
Lantheus Holdings, Inc.
Mar 2, 2026
Award(A)
Direct
5.2K shares-
LNTH
Lantheus Holdings, Inc.
Mar 2, 2026
Tax Payment(F)
Direct
8.3K shares at avg. $76.30$630K
LNTH
Lantheus Holdings, Inc.
Jun 13, 2025
Sale(S)
Direct
6K shares at avg. $78.74$472K
LNTH
Lantheus Holdings, Inc.
Jun 5, 2025
Sale(S)
Direct
6K shares at avg. $79.65$478K
LNTH
Lantheus Holdings, Inc.
Apr 17, 2025
Tax Payment(F)
Direct
178 shares at avg. $101.32$18K
LNTH
Lantheus Holdings, Inc.
Mar 5, 2025
Award(A)
Direct
23.9K shares-
LNTH
Lantheus Holdings, Inc.
Mar 3, 2025
Tax Payment(F)
Direct
12.9K shares at avg. $94.86$1.2M
LNTH
Lantheus Holdings, Inc.
Mar 3, 2025
Award(A)
Direct
10.5K shares-

		Type	Shares	Price		Ownership
Apr 17, 2026	LNTH Lantheus Holdings, Inc.	Tax Payment(F)	1,911	$83.82	$160,180	Direct
Mar 5, 2026	LNTH Lantheus Holdings, Inc.	Tax Payment(F)	1,283	$76.31	$97,906	Direct
Mar 5, 2026	LNTH Lantheus Holdings, Inc.	Award(A)	36,692	-	$0	Direct
Mar 2, 2026	LNTH Lantheus Holdings, Inc.	Award(A)	5,169	-	$0	Direct
Mar 2, 2026	LNTH Lantheus Holdings, Inc.	Tax Payment(F)	8,259	$76.30	$630,162	Direct
Jun 13, 2025	LNTH Lantheus Holdings, Inc.	Sale(S)	6,000	$78.74	$472,440	Direct
Jun 5, 2025	LNTH Lantheus Holdings, Inc.	Sale(S)	6,000	$79.65	$477,900	Direct
Apr 17, 2025	LNTH Lantheus Holdings, Inc.	Tax Payment(F)	178	$101.32	$18,035	Direct
Mar 5, 2025	LNTH Lantheus Holdings, Inc.	Award(A)	23,884	-	-	Direct
Mar 3, 2025	LNTH Lantheus Holdings, Inc.	Tax Payment(F)	12,907	$94.86	$1,224,358	Direct
Mar 3, 2025	LNTH Lantheus Holdings, Inc.	Award(A)	10,514	-	-	Direct

1-11 of 11 transactions

About Niedzwiecki Daniel

Niedzwiecki Daniel (SEC CIK 0001861113) files insider reports with the SEC as Officer of Lantheus Holdings, Inc. (LNTH).

Signal8 holds 8 ownership filings by Niedzwiecki Daniel, all Form 4s, filed between Mar 5, 2025 and Apr 21, 2026. Those filings report 11 transactions, from Mar 3, 2025 to Apr 17, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Niedzwiecki Daniel's filings is in BEDFORD, MA.

Recent filings by Niedzwiecki Daniel

Apr 17, 2026: Tax withholding of LNTH shares (Form 4, code F).
Mar 5, 2026: Tax withholding of LNTH shares (Form 4, code F).
Mar 5, 2026: Grant or award of LNTH shares (Form 4, code A).
Mar 2, 2026: Grant or award of LNTH shares (Form 4, code A).
Mar 2, 2026: Tax withholding of LNTH shares (Form 4, code F).

Other insiders filing for Lantheus Holdings, Inc. (LNTH)

Marshall Robert J. Jr., CFO and Treasurer
Dinkelborg Ludger
Brown Kimberly, Chief Accounting Officer
Ber Gerard, Director
Heino Mary Anne, Executive Chair and CEO
McHugh Julie, Director

How to read Form 4 transaction codes