The agreement covers the stake held by the Gold family trust, previously overseen by Vanessa's father David Gold, who was joint chairman of West Ham United for 13 years alongside long-time business partner David Sullivan before his death in 2023.
In a statement, Vanessa Gold said: "I have now reached an agreement to sell my family's shareholding to a consortium of PCP Capital Partners, led by Amanda Staveley and Mehrdad Ghodoussi, in partnership with Ashland Forest Capital Partners. While the process has not yet concluded, I wanted to be open with our fans about where things stand and my intentions."
The move comes after an earlier agreement to sell the same stake to Daniel Kretinsky's EP Group collapsed. BBC Sport reported in June that deal would have seen Kretinsky's holding rise from 27% to 43%, overtaking Sullivan's 38.8% to make EP Group the club's single largest shareholder.
Gold explained the reversal in her statement, saying: "On June 12, Daniel Kretinsky and I agreed a sale that would have made EP Group the single largest shareholder in West Ham. Unfortunately, since that time, the original deal and other alternatives that we have discussed could not be brought to fruition."
Kretinsky's camp made clear its unhappiness with the new arrangement. A spokesperson for the Czech businessman said: "The agreement we had reached with the Gold family in June provided stability for the club at a crucial time. Today's announcement does the opposite. We will always act in the best interests of West Ham United and are reviewing all of our options, including exercising our pre-emption rights in full."
Any deal remains subject to that pre-emption process, under which existing shareholders have the right to buy the Gold family's stake before it can pass to an outside party.
Staveley and Ghodoussi were previously involved at Newcastle United between 2021 and 2024, having played a central role in the Saudi Public Investment Fund's takeover of the Tyneside club, before their own shareholding there was diluted and they eventually departed. Vanessa Gold said she believed the pair were the right fit to help West Ham recover from relegation last season: "My ambition throughout this process has been to ensure the club has the right leadership and ownership to enable West Ham to achieve its potential and return to its rightful place in the Premier League.
"Amanda Staveley, Mehrdad Ghodoussi and PCP Capital Partners will bring deep experience and understanding of what it takes to lead a successful football club. I have every confidence in what she and her partners can bring to West Ham."