The former couple shares three children together, sons Noah, 8, Bodhi, 6, and Journey, 4.
Fox is seeking joint legal and physical custody, TMZ reports. She's also reportedly requesting that neither she nor Green receives spousal support.
Green, 47, has already issued his response and is in agreement with nearly all matters, per TMZ. However, as for spousal support, the "Beverly Hills, 90210" alum is reportedly asking it still be left open for discussion. Neither party has noted anything in regards to child support, according to the outlet.
In addition, TMZ reports that Green and Fox's separation date differ. Fox states it's November 2019, while Green has March 2020.
Reps for Green and Fox did not immeidately respond to Fox News' request for comment.
In May, Green offered "context," recounting what led to his and Fox's split. He said that last year "around Halloween, Thanksgiving time" Fox was gone for several weeks out of the country to film a movie and while she was gone, he dreamt that there was a distance between them that actualized when she arrived home. According to Green, Fox was gone for about five and a half weeks, which is the "longest that she's been gone" for work.
"I gave her a couple weeks, I figured she's been out of the country, she's jet-lagged, she's been shooting nights, I have to give her some time to recoup a little bit and get back into life, and so I did," he said on his podcast, "...with Brian Austin Green."
After two weeks, nothing had changed between the pair, and Fox revealed to her husband that she'd enjoyed her time alone and even liked herself "better during that experience."
Green said he was "shocked" and "upset about it," but "wasn't upset at her." "It wasn't a choice she made," he said. "That's the way she honestly felt."
The pair then decided to "separate a little bit and give ourselves some time and take some space, and meditate, and do whatever, and see what it is we find, and so we did," Green said.
He went on to explain that from there "things just didn't really change" and "the reality started sinking in" of "maybe this is what it is."
"Neither one of us did anything to each other. She's always been honest with me. I've always been honest with her," Green said. "We've had an amazing relationship, and I will always love her. And I know she will always love me and I know as far as a family what we've built is really cool and really special.”
Fox is currently dating Machine Gun Kelly. They recently made their red carpet debut as a couple at the American Music Awards.
Fox News' Nate Day contributed to this report