Arsenal director Stan Kroenke has increased his stake in the Premiership club.
Mr Kroenke has bought a further 160 shares at a price of £8,500 per share, taking his holding in Arsenal to 25.8%.
It takes Mr Kroenke closer to the 30% threshold that would force him to make an offer for the remaining shares.
Mr Kroenke also owns the NBA’s Denver Nuggets, the NHL’s Colorado Avalanche, and the Colorado Rapids of Major League Soccer.
Alisher Usmanov, an Uzbekistani billionaire, owns more than 25% of the club through investment vehicle Red and White Holdings.
The Arsenal board recently rejected the Uzbek-born Russian billionaire’s plan to provide fresh funds for transfers, as well as cutting the club’s debt by issuing new shares.
Following the rejection, Mr Usmanov cast doubt on the club’s ability to provide enough money for the team to challenge for honours.