Cossington and Van Ginhoven hope to take advantage of the $115bn (£87bn) available to them via umbrella company Sixth Street.
Their ambition is big, but simple – to do everything they can to help their clubs win football matches.
When Cossington, who described herself as feeling like “a kid in the candy store”, was tasked with recruiting the “best in the world”, Van Ginhoven was top of her list.
The former FA general manager worked with England manager Sarina Wiegman across her three Euros title successes – first with the Netherlands in 2017, then the Lionesses in 2022 and 2025.
As soon as Cossington found out Van Ginhoven’s intention was not to extend her contract in the summer, she asked her to join her in San Francisco.
“We want to be a global organisation that has levels and standards that are through the roof,” said Cossington. “We looked at the very best.
“Anja and her skills are incredibly unique. She understands the business side of a football club, but also the performance aspect.
“She has a proven track record of joining the two together. She was in that pool of top, top talent that we identified.
“It was also a cultural fit. To work with someone who has the same ambition, the same values and is incredibly skilled at their job, it was an easy decision.”
It was a big call for Van Ginhoven to leave the FA having worked with Wiegman at Dutch club Den Haag, as well as in the international game.
But she says Bay Collective is “everything she believes in” and she couldn’t pass up the opportunity to be reunited with Cossington.
“It is about using the uniqueness of women’s football to build clubs and to make players better,” Van Ginhoven told BBC Sport.
“If you are connected, you can be a superpower as a team, a club and an organisation to grow women’s football in the right way.
“We come from different countries, were raised in different ways, but what brings us together is our journey in women’s football and the love for the beautiful sport.
“We think we can bring our expertise in to help women’s football. We really want to develop the sport we both love so deeply in the right way.”