Key facts
- This page summarizes Mark W. Begor's Form 4 filing for EQUIFAX INC (EFX).
- 6 reported transactions and 1 derivative row are listed below.
- Accepted by SEC: 27 Oct 2026, 16:16.
Mark W. Begor - 23 Oct 2026 Form 4 Insider Report for EQUIFAX INC (EFX)
- Reporting relationship
- CEO, Director
- Issuer ticker
- EFX
- Reported as of
- 23 Oct 2026
- Net transaction value
- -$6,908,340
- SEC form
- 4
- Accepted by SEC
- 27 Oct 2026, 16:16:57 UTC
- Prior SEC filing
- 28 Jul 2026
- Source filing
- View source filing
- Reporting owner signature
- /s/Lisa Stockard as Attorney-in-Fact
Source evidence
Original filing metadata and source links for verification.
4 source fields
Reporting owner
1 detail
Filing notes and source
Key filing fact
Mark W. Begor filed Form 4 for EQUIFAX INC (EFX) on 27 Oct 2026.
Change
- Previous filing in this sequence was filed on 28 Jul 2026.
- Current net transaction value: -$6,908,340.
Research use
- This tells you what this filing adds before you inspect full transaction and derivative tables.
- You can trace every row back to the original SEC filing document.
Evidence
Filed on Form 4
View source filing
Ownership activity is grounded in SEC Form 4 disclosures.
Reporting Owners (1)
CIK 0001335111
Primary reporting owner
Begor Mark W
- Relationship
- CEO, Director
- Address
- 1550 PEACHTREE STREET, N.W., ATLANTA
- Signature
- /s/Lisa Stockard as Attorney-in-Fact
- Signature date
- 27 Oct 2026
Reported non-derivative transactions
Shares, units, or other non-derivative securities reported in this filing.
EFX
transaction
Common Stock
Options Exercise
- Transaction value
- Shares
- +37,792
- Change %
- +13%
- Price
- $112.46*
- Shares after
- 327,714
- Date
- 23 Oct 2026
- Ownership
- Direct
- Footnotes
- F1, F2
EFX
transaction
Common Stock
Sale
- Transaction value
- -$222,960
- Shares
- -1,194
- Change %
- -0.36%
- Price
- $186.73
- Shares after
- 326,520
- Date
- 23 Oct 2026
- Ownership
- Direct
- Footnotes
- F1, F2, F3
EFX
transaction
Common Stock
Sale
- Transaction value
- -$229,254
- Shares
- -1,250
- Change %
- -0.38%
- Price
- $183.40
- Shares after
- 325,270
- Date
- 23 Oct 2026
- Ownership
- Direct
- Footnotes
- F1, F2
EFX
transaction
Common Stock
Sale
- Transaction value
- -$311,327
- Shares
- -1,681
- Change %
- -0.52%
- Price
- $185.20
- Shares after
- 323,589
- Date
- 23 Oct 2026
- Ownership
- Direct
- Footnotes
- F1, F2, F4
EFX
transaction
Common Stock
Sale
- Transaction value
- -$6,144,800
- Shares
- -33,667
- Change %
- -10%
- Price
- $182.52
- Shares after
- 289,922
- Date
- 23 Oct 2026
- Ownership
- Direct
- Footnotes
- F1, F2, F5
EFX
holding
Common Stock
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 2,350
- Date
- 23 Oct 2026
- Ownership
- 2-yr Apr 2025 GRAT
EFX
holding
Common Stock
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 21,284
- Date
- 23 Oct 2026
- Ownership
- 2-yr Dec 2025 GRAT
EFX
holding
Common Stock
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 20,512
- Date
- 23 Oct 2026
- Ownership
- 2-yr Jun 2025 GRAT
EFX
holding
Common Stock
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 2,018
- Date
- 23 Oct 2026
- Ownership
- 2-yr May 2025 GRAT
EFX
holding
Common Stock
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 18,562
- Date
- 23 Oct 2026
- Ownership
- 2-yr May 2026 GRAT
Reported derivative securities
Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.
EFX
transaction
Derivative
Stock Option/Right to Buy
Options Exercise
- Transaction value
- Shares
- -37,792
- Change %
- -100%
- Price
- $0.000000*
- Shares after
- 0
- Date
- 23 Oct 2026
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 37,792
- Exercise price
- $112.46
- Footnotes
- F1, F6
* marks a reported price that did not pass the local price check.
Additional SEC filing notes
Filing notes and footnotes
Rule 10b5-1 trading plan
These transactions were reported as open-market trades under a Rule 10b5-1 plan. The plan lets an insider set trading instructions in advance, which can reduce the risk of trading while in possession of material nonpublic information.
Original filing language: transaction made pursuant to a contract, instruction, or written plan intended to satisfy Rule 10b5-1(c).
Explanation of responses 6 footnotes
Footnote F1
The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 10/28/2025.
Footnote F2
Includes accrued dividend equivalent units for dividends reinvested in corresponding restricted stock units through the Company's last dividend payment date and 226 shares of common stock purchased pursuant to the Equifax Inc. 2020 Employee Stock Purchase Plan.
Footnote F3
The price reported in column 4 is a weighted average price. The shares were sold at prices ranging from $186.6698 to $187.43, inclusive. Upon request by the SEC staff, the issuer, or any security holder of the issuer, full information regarding the number of shares purchased or sold at each separate price will be provided.
Footnote F4
The price reported in column 4 is a weighted average price. The shares were sold at prices ranging from $184.9466 to $185.5977, inclusive. Upon request by the SEC staff, the issuer, or any security holder of the issuer, full information regarding the number of shares purchased or sold at each separate price will be provided.
Footnote F5
The price reported in column 4 is a weighted average price. The shares were sold at prices ranging from $181.7387 to $182.6225, inclusive. Upon request by the SEC staff, the issuer, or any security holder of the issuer, full information regarding the number of shares purchased or sold at each separate price will be provided.
Footnote F6
The option vested in three equal annual increments beginning 5/4/2019.