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Robert J. Marshall Jr.

CIK 1754976 · CFO and Treasurer · last filed 2026-09-02

Robert J. Marshall Jr. is a CFO and Treasurer who has filed 45 SEC Form 4 insider transactions across 2 companies since 2018. The most recent filing shows the insider had shares withheld for taxes covering $72.8K of LNTH on Sep 2, 2026. Across all open-market trades the lifetime net is −$14.1M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $12.3M across reported positions. 48 SEC filings were submitted jointly with Lantheus Holdings, Inc.

"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.

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Disclosed Exposure

$12.26M

Companies

2

Total Filings

45

Lifetime Open-Market Net

-$14.08M

Filer Profile

Reported Address
C/O LANTHEUS MEDICAL IMAGING, INC.
331 TREBLE COVE ROAD
NORTH BILLERICA, MA 01862
Related Filers
Lantheus Holdings, Inc. — 48 joint filings, latest 2026-09-02
Profile details as reported on the filer's SEC submissions — for individual insiders the address is often in care of the issuer. Related filers are identified from jointly filed SEC submissions and shared reported addresses. View filings on SEC EDGAR.

Holdings By Company

Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
Symbol Role Shares Price Disclosed Exposure Lifetime OM Net Filings Latest Filed
LNTH CFO and Treasurer 122,071 $100.25 $12.24M -$14.08M 37 2026-09-02
LFWD Director 2,993 $7.12 $21.3K $0 1 2025-08-07

Recent Filings

45 filings
Insider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
Filed Symbol Action Net Shares Net $ Link
2026-09-02 LNTH Tax (F) −721 -$72.8K EDGAR
2026-03-09 LNTH Mixed +36,820 -$90.2K EDGAR
2026-03-04 LNTH Mixed −2,161 -$812.7K EDGAR
2025-09-03 LNTH Tax (F) −727 -$39.9K EDGAR
2025-08-07 LFWD Grant (A) +35,920 $0 EDGAR
2025-06-11 LNTH Mixed −25,000 -$2.56M EDGAR
2025-06-09 LNTH Notice (144) −39,773 -$3.25M EDGAR
2025-03-19 LNTH Sell (S) −10,000 -$1.01M EDGAR
2025-03-17 LNTH Notice (144) −10,000 -$1.01M EDGAR
2025-03-07 LNTH Grant (A) +23,884 $0 EDGAR
Showing 1–10 of 45
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Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.