Jack Dorsey announced in a series of tweets today that he is shifting $1 billion in his Square equity to create a fund dedicated to COVID-19 relief.

The Twitter and Square CEO is calling the fund Start Small and posting a tally of disbursements and recipients in a public spreadsheet. Dorsey said in his announcement that the new initiative will shift the focus to other causes at some point. The first Start Small contribution listedis $100,000 to America Food Fund — an effort led by Leonardo DiCaprio and Laurene Powell Jobs dedicated to providing meals to vulnerable populations disrupted by the COVID-19 pandemic. Other top backers of America Food Fund include Oprah Winfrey ($1 million) and Apple ($5 million), according to the organization GoFundMe page. That what we know so far from a tweet posted Tuesday afternoon by the American tech entrepreneur who co-founded and leads not one, but two publicly listed companies. I&m moving $1B of my Square equity (~28% of my wealth) to #startsmall LLC to fund global COVID-19 relief.

After we disarm this pandemic, the focus will shift to girl health and education, and UBI.

It will operate transparently, all flows tracked here: https://t.co/hVkUczDQmz — jack (@jack) April 7, 2020 There still a lot to learn about Dorsey new initiative, including how it will be managed, whether it will make investments (along with donations) and how to apply for funding.

TechCrunch has asked Square for additional details and will update this post when we hear back.