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Company profile

Lantheus Holdings, Inc. Insider Trading

LNTH

Every SEC Form 4 insider trading filing for Lantheus Holdings, Inc. (LNTH) since April 2023: open-market buys and sells by directors and officers, option exercises, and cluster activity, updated as each filing is reported to the SEC. Why 2023?

Exchange
Nasdaq
Sector
In Vitro & In Vivo Diagnostic Substances
CIK
0001521036
Filings
161
Insiders
39
Last filing
2026-08-31
SEC EDGAR ↗Yahoo Finance ↗Finviz ↗Stock Analysis ↗

Activity summary

No discretionary insider buying or selling in the last 30 days. The 1 transaction filed was grants, option exercises or other non-open-market activity.

Three year balance

Buy and sell value by quarter, Q4 23 to Q3 26. Lantheus Holdings, Inc. insiders were net sellers in every quarter shown.

PurchasesSales
Q4 23Q1 24Q2 24Q3 24Q4 24Q1 25Q2 25$382.7MQ3 25Q4 25Q1 26Q2 26Q3 26

Bars below the rule are sales, above are purchases. Largest quarter on the chart is $382.7M.

90 day insight

Over the last 90 days, Lantheus Holdings, Inc. insiders filed 3 Form 4 transactions, none of which were open-market purchases or sales.

  • Most active insider: Ludger Dinkelborg with 1 transaction totaling $256K.

Activity skews bullish: buys outpace sales.

Insider Transactions

Sourced from SEC EDGAR Form 4 filings. Updated hourly.

DateInsiderCompanyTypeSharesPriceValueReturn
Aug 31, 2026Robert J. Marshall Jr.LNTH
Tax Withholding
721$100.96$73K-0.4% 1w
Aug 17, 2026Kimberly BrownLNTH
Tax Withholding
463$100.91$47K+0.1% 1m
Aug 17, 2026Ludger DinkelborgLNTH
Tax Withholding
2,536$100.91$256K+0.1% 1m
May 14, 2026Minnie Baylor-HenryLNTH
Award
4,137——+8.1% 3m
May 14, 2026Gerard BerLNTH
Award
4,137——+8.1% 3m

45 more transactions hidden

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Top insiders

By open-market value traded.

FARALLON PARTNERS L L C/CA2 filings−$191.2M
Rajiv A Patel2 filings−$191.2M
Robert J. Marshall Jr.CFO and Treasurer3 filings−$3.3M
Daniel NiedzwieckiSee Remarks1 filing−$472K
Paul BlanchfieldPresident1 filing−$164K

Institutional Ownership

Top 13F-HR holders of Lantheus Holdings, Inc. as of 2026-06-30

↓ decreasing
Total reported AUM
$2.18B
QoQ change
-56.1%
Reporting period
2026-06-30
#1
BlackRock, Inc.
CIK 0002012383
$573.2M
5.2M shares
#2
State Street Corp
CIK 0000093751
$277.4M
2.5M shares
#3
BlackRock, Inc.
CIK 0002012383
$241.5M
2.2M shares

Data source: quarterly 13F-HR filings: institutional holders report positions within 45 days of quarter end. Joined with insider activity above: see who's loading up institutionally while insiders are trading. Full 13F-HR API →

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Form4API, StockholmNot affiliated with the SEC or EDGAR. Data sourced from public EDGAR filings. Not investment advice.

Congressional Trading

Disclosed LNTH trades under the STOCK Act

Total trades
4
Purchases
4
Sales
0
Gilbert Ray Cisneros, Jr.
Democrat · House · CA
4 buys
0 sells

Sourced from U.S. House Clerk periodic transaction reports (House coverage only). Trade counts reflect disclosed filings only. The STOCK Act allows up to 45 days between a trade and its disclosure, so this reflects recent disclosures, not real-time trading. Full congressional trading API →

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