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

$6.19M

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	$42.73	$6.19M	-$5.36M	46	2021-01-26

Recent Filings · Page 2 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
2023-04-04	Dime Community Bancshares, Inc. /NY/ (DCOMP) Delisted	Grant (A)	+3,600	$0	EDGAR
2023-01-13	Dime Community Bancshares, Inc. /NY/ (DCOMP) Delisted	Sell (S)	−20,000	-$688.2K	EDGAR
2022-08-16	Dime Community Bancshares, Inc. /NY/ (DCOMP) Delisted	Sell (S)	−30,000	-$1.05M	EDGAR
2022-08-15	Dime Community Bancshares, Inc. /NY/ (DCOMP) Delisted	Sell (S)	−25,000	-$865.0K	EDGAR
2022-08-12	Dime Community Bancshares, Inc. /NY/ (DCOMP) Delisted	Sell (S)	−20,000	-$688.2K	EDGAR
2022-04-05	Dime Community Bancshares, Inc. /NY/ (DCOMP) Delisted	Grant (A)	+2,460	$0	EDGAR
2021-04-05	Dime Community Bancshares, Inc. /NY/ (DCOMP) Delisted	Mixed	−37,967	$0	EDGAR
2021-02-03	—	Disp (D)	−603,592	$0
2021-01-26	DCOM	Exer (M)	+9,709	$150.1K	EDGAR
2020-12-30	DCOM	Mixed	+12,437	$0	EDGAR

Showing 11–20 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.