All three of those town halls will air live on CNN at 10 p.m. ET.
CNN will also host back-to-back town halls on April 14 with two other Democratic hopefuls.
Gillibrand, who was recently re-elected to a second term in the Senate, became the first Democratic candidate to release her 2018 tax return, and called on her rivals to do the same.
Inslee is running as a rare single-issue candidate, making combating climate change the central rationale for his campaign.
Castro, a former mayor of San Antonio, was one of the first candidates to jump into the 2020 race and is the only Latino politician running in 2020.
Williamson authored several best-selling books and has been a spiritual counselor to Oprah Winfrey.
Yang is an entrepreneur who launched Venture for America, a fellowship program that aims to connect recent grads with startups.
Source : CNN