Mark W Begor

CIK 1335111 · CEO · last filed 2026-07-28

Mark W Begor is a CEO who has filed 84 SEC Form 4 insider transactions across 5 companies since 2016. The most recent filing, for EFX, was dated Jul 28, 2026. Across all open-market trades the lifetime net is −$123.2M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $50.1M across reported positions. 22 SEC filings were submitted jointly with NCR CORP.

"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

$50.08M

Companies

Total Filings

Lifetime Open-Market Net

-$123.15M

Charts

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

Filer Profile

Reported Address

EQUIFAX INC
1550 PEACHTREE STREET NW
ATLANTA, GA 30309

Related Filers

NCR CORP — 22 joint filings, latest 2023-10-03

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
EFX	CEO	325,243	$141.80	$46.12M	-$123.15M	35	2026-07-28
RJF	Director	2,285	$158.90	$363.1K	$0	2	2026-02-23
NATL	Director	31,475	$45.44	$1.43M	$0	7	2025-05-23
NCR Voyix Corp (NCR) Delisted	Director	37,036	$27.08	$1.00M	$0	21	2023-10-03
FICO	Director	3,174	$682.19	$2.17M	$0	5	2018-03-22

Recent Filings

84 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
2026-07-28	EFX	Mixed	—	-$2.26M	EDGAR
2026-07-24	EFX	Notice (144)	−37,791	-$6.51M	EDGAR
2026-04-28	EFX	Mixed	—	-$2.27M	EDGAR
2026-04-24	EFX	Notice (144)	−37,791	-$6.52M	EDGAR
2026-02-27	EFX	Grant (A)	+40,955	$0	EDGAR
2026-02-23	RJF	Grant (A)	+1,303	$0	EDGAR
2026-02-12	EFX	Mixed	+31,519	-$3.74M	EDGAR
2026-02-10	EFX	Notice (144)	−37,791	-$7.40M	EDGAR
2026-02-05	EFX	Mixed	+56,718	-$421.0K	EDGAR
2026-01-05	EFX	Tax (F)	−997	-$216.3K	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.