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MATTHEW A LINDENBAUM

CIK 927943 · last filed 2026-08-03

MATTHEW A LINDENBAUM is a corporate insider who has filed 21 SEC Form 4 insider transactions across 5 companies since 2015. The most recent filing shows the insider sold $24.2M of DCOM on Aug 3, 2026. Across all open-market trades the lifetime net is −$62.8M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $42.9M across reported positions.

"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

$42.93M

Companies

5

Total Filings

21

Lifetime Open-Market Net

-$62.76M

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
DCOM Director 1,084,289 $39.45 $42.78M -$24.20M 1 2026-08-03
RM Director 4,908 $31.83 $156.2K $5.88M 3 2026-02-24
Dime Community Bancshares, Inc. /NY/ (DCOMP) Delisted Director 186,769 $18.51 $3.46M -$47.46M 10 2026-02-03
Dime Community Bancshares, Inc. /NY/ (BDGE) Delisted Director 711,870 — — $4.17M 5 2018-10-09
HUDSON VALLEY HOLDING CORP (HVB) Delisted Director 0 — — -$1.14M 2 2015-07-02

Recent Filings

21 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
2026-08-03 DCOM Sell (S) −592,312 -$24.20M EDGAR
2026-02-24 RM Sell (S) −72,352 -$2.49M EDGAR
2026-02-03 Dime Community Bancshares, Inc. /NY/ (DCOMP) Delisted Sell (S) −83,517 -$2.86M EDGAR
2025-11-06 Dime Community Bancshares, Inc. /NY/ (DCOMP) Delisted Mixed — $616 EDGAR
2025-02-04 Dime Community Bancshares, Inc. /NY/ (DCOMP) Delisted Buy (P) +3,129 $97.7K EDGAR
2024-10-03 Dime Community Bancshares, Inc. /NY/ (DCOMP) Delisted Grant (A) +1,860 $0 EDGAR
2023-08-31 Dime Community Bancshares, Inc. /NY/ (DCOMP) Delisted Mixed — $37.0K EDGAR
2023-06-02 RM Buy (P) +200,648 $5.23M EDGAR
2023-05-30 RM Mixed +160,576 $3.14M EDGAR
2023-02-08 Dime Community Bancshares, Inc. /NY/ (DCOMP) Delisted Sell (S) −490,000 -$15.34M EDGAR
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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.