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JOSEPH D SAMBERG

CIK 1264542 · last filed 2025-11-24

JOSEPH D SAMBERG is a corporate insider who has filed 10 SEC Form 4 insider transactions across 2 companies since 2018. The most recent filing shows the insider bought $693.3K of NNAVW on Nov 24, 2025. Across all open-market trades the lifetime net is −$8.3M, making them a net seller over the disclosed history.

"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

$0

Companies

2

Total Filings

10

Lifetime Open-Market Net

-$8.34M

Filer Profile

Reported Address
C/O HAWKES FINANCIAL, LLC
77 BEDFORD ROAD
KATONAH, NY 10536
State of Incorporation
DE
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
NEXTNAV INC. (NNAVW) Delisted 10%+ Owner 400,000 $5.50 $2.20M -$1.01M 5 2025-11-24
NII HOLDINGS INC (NIHD) Delisted 10%+ Owner 5,096,986 — — -$7.33M 4 2019-12-23

Recent Filings

10 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
2025-11-24 NEXTNAV INC. (NNAVW) Delisted Buy (P) +58,457 $693.3K EDGAR
2025-11-17 NEXTNAV INC. (NNAVW) Delisted Sell (S) −600,000 -$7.41M EDGAR
2024-06-24 NEXTNAV INC. (NNAVW) Delisted Buy (P) +315,200 $2.35M EDGAR
2024-03-20 NEXTNAV INC. (NNAVW) Delisted Buy (P) +483,000 $2.18M EDGAR
2024-01-23 NEXTNAV INC. (NNAVW) Delisted Buy (P) +300,000 $1.17M EDGAR
2019-12-23 NII HOLDINGS INC (NIHD) Delisted Sell (S) −4,000,000 -$8.60M EDGAR
2018-12-04 NII HOLDINGS INC (NIHD) Delisted Other (J) +96,986 $0 EDGAR
2018-02-27 NII HOLDINGS INC (NIHD) Delisted Buy (P) +1,265,147 $1.24M EDGAR
2018-01-09 NII HOLDINGS INC (NIHD) Delisted Buy (P) +56,132 $28.9K EDGAR
2010-08-02 — Other (J) +400 $820
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.