Kenneth J Mahon

CIK 1237108 · CHIEF EXECUTIVE OFFICER · last filed 2026-01-05

"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.

Disclosed Exposure

$6.18M

Companies

Total Filings

Lifetime Open-Market Net

-$9.45M

Charts

Trading activity, where the exposure sits, and each trade against the stock price.

DCOM price and trades

Daily close with each Form 4 filing on this company marked: green = open-market buy, red = open-market sale, purple = grants, exercises, gifts and other non-market transactions. Marker size scales with the dollar value.

Shares held

Shares owned after each reported transaction on this company (direct holdings as reported).

Open-market buying and selling

by month

Dollar value of open-market purchases (code P, up) and sales (code S, down) across all companies, by filing month. Grants, exercises and gifts are excluded.

Exposure by company

latest

OfficerDirector10% owner* stale (no filing in 3 yrs)

Most recently reported shares × current price. Faded bars (*) have had no filing in 3 years, so the person may no longer hold them. Click a bar to chart that company.

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
Dime Community Bancshares, Inc. /NY/ (DCOMP) Delisted	Director	234,365	$18.51	$4.34M	-$4.09M	16	2026-01-05
DCOM	CHIEF EXECUTIVE OFFICER	144,756	$42.72	$6.18M	-$5.36M	46	2021-01-26

Recent Filings · Page 3 of 7

64 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
2020-05-04	DCOM	Mixed	+14,692	$0	EDGAR
2020-04-29	DCOM	Exer (M)	+3,044	$38.8K	EDGAR
2020-02-06	DCOM	Buy (P)	+10,000	$250.0K	EDGAR
2019-05-02	DCOM	Mixed	+6,380	$198.0K	EDGAR
2019-03-26	DCOM	Mixed	+812	$0	EDGAR
2018-12-03	DCOM	Buy (P)	+750	$13.2K	EDGAR
2018-11-21	DCOM	Buy (P)	+300	$5.1K	EDGAR
2018-11-19	DCOM	Buy (P)	+300	$5.0K	EDGAR
2018-05-03	DCOM	Sell (S)	−9,475	-$182.6K	EDGAR
2018-05-02	DCOM	Mixed	+10,025	$193.0K	EDGAR

Showing 21–30 of 64

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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.