Karren Brady says West Ham are working through a "comprehensive list" as they look to build a squad to compete in the Premier League.
The Hammers secured promotion through the play-offs after beating Blackpool 2-1 at Wembley in May and have already completed the signing of Mohamed Diame from Wigan and former Bolton keeper Jussi Jaaskelainen.
The vice-chairman is excited to have overseen the club's return to the top flight and says their aims go beyond simply staying there.
She told Sky Sports News: "We hope to bring in a few more significant signings to improve our team and increase our chances of remaining in the Premier League and really 'have a go'.
"We want to compete and really make a contribution to this league. West Ham are a great club who deserve to play in the greatest league in the world.
"Sam has made a very strategic plan. We have a comprehensive list of players we hope to bring in and we are working to do that."
But Brady refused to comment on reports that Grant Holt is at the top of that list.
She continued: "It's not appropriate to comment on other people's players.
"We prefer to do our business face to face with the chairmen of other clubs, and that's what we'll do."
West Ham are also hopeful of taking over the Olympic Stadium, and Brady says the club are committed to preserving the venue's legacy.
The former Birmingham City chairman added: "We still have a dream. The Olympic Stadium has been built. Someone has to use it, and provide the jobs.
"Its legacy needs to be preserved. It needs someone to come into that community, ensure supporters come in and use the park, and do that on a global stage -that's what the Premier League provides.
"We're very hopeful and we're working very hard to get it."