Hundreds of West Ham fans protested against the board outside the London Stadium ahead of their clash with Southampton.
The supporters, angry at the way the club is being run, congregated outside Stratford station before making their way to the ground.
Once there the supporters, many of whom were carrying banners, marched around the stadium singing anti-board songs.
Security inside the ground has been beefed up after trouble flared at the last home match against Burnley on March 10.
A security barrier has been erected close to the directors' box, where joint-owner David Sullivan was struck by a coin at the Burnley game.