The 33-year-old frontman put pen to paper on a one-year deal after his contract with the Magpies expired at the end of June. With over a decade of top-flight experience under his belt, Wilson adds firepower and leadership to a West Ham side looking to climb higher in the Premier League standings this season.
"I'm excited to be joining a massive football club like West Ham," Wilson told the club's official site. "It's a team that mirrors my own values—hard work, commitment, and ambition. I'm here to contribute and chase success."
The move marks a fresh chapter for Wilson, whose time at Newcastle saw him consistently deliver goals when fit. Now, under the guidance of head coach Graham Potter, he aims to make his mark in claret and blue.
"We're very happy to bring Callum on board," said Potter. "He's a proven Premier League striker with a strong work ethic and an eye for goal. But beyond that, he brings real character and presence to the squad—qualities we highly value in our recruitment."
Wilson's arrival comes as West Ham continue to reshape their squad in pursuit of European qualification, with experience and mentality playing key roles in their transfer strategy.