On October 6, 2023, the club set a NWSL record for standalone attendance with 34,130 spectators at Lumen Field for a regular season match against the Washington Spirit.

The match was the final home game for Megan Rapinoe, who announced her intent to retire at the end of the season.

For incoming transfers, dates listed are when OL Reign officially signed the players to the roster.

Transactions where only the rights to the players are acquired (e.g., draft picks) are not listed.

For outgoing transfers, dates listed are when OL Reign officially removed the players from its roster, not when they signed with another team.