X0407 4 2023-05-24 0000033185 EQUIFAX INC EFX 0001581930 Chaney Carla 1550 PEACHTREE STREET, N.W. ATLANTA GA 30309 1 EVP, Chief HR Officer 1 Common Stock 2023-05-24 4 M 0 5240.0000 160.2300 A 21548.0000 D Common Stock 2023-05-24 4 M 0 4346.0000 148.3600 A 25894.0000 D Common Stock 2023-05-24 4 M 0 3594.0000 136.4900 A 29488.0000 D Common Stock 2023-05-24 4 S 0 678.0000 208.4512 D 28810.0000 D Common Stock 2023-05-24 4 S 0 14502.0000 207.5007 D 14308.0000 D Stock Option/Right to Buy 136.4900 2023-05-24 4 M 0 3594.0000 0.0000 D 2022-05-14 2025-05-14 Common Stock 3594.0000 3195.0000 D Stock Option/Right to Buy 148.3600 2023-05-24 4 M 0 4346.0000 0.0000 D 2022-05-14 2025-05-14 Common Stock 4346.0000 3864.0000 D Stock Option/Right to Buy 160.2300 2023-05-24 4 M 0 5240.0000 0.0000 D 2022-05-14 2025-05-14 Common Stock 5240.0000 4659.0000 D The sales reported in this Form 4 were effected pursuant to a rule 10b5-1 trading plan adopted by the reporting person on 2/23/2023. Includes accrued dividend equivalent units for dividends reinvested in corresponding restricted stock units through the Company's last dividend payment date. The price reported in column 4 is a weighted average price. The shares were sold at prices ranging from $208.27 to $208.65, 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. The price reported in column 4 is a weighted average price. The shares were sold at prices ranging from $207.18 to $208.16, 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. /s/Lisa Stockard as Attorney-in-Fact 2023-05-26