CNBC story here says he and his sons filed an appeal of the decisions. It discusses the decision but adds nothing as to whether he posted a bond.
AP is saying:
Trump’s lawyers wrote in court papers that they’re asking the appeals court to decide whether Engoron “committed errors of law and/or fact” and whether he abused his discretion and/or his jurisdiction.
A lot of throwing things at the wall again.
Stories do note that papers from the court clerk had to be processed before the appeal could be filed. That process is complete.
To reply to comments below, my understanding is that you CAN appeal a civil decision without posting a bond. HOWEVER, failing to post the bond means the DA can enforce the judgement without waiting on the appeal — Latitia can start actions to collect the money as soon as the decision perfects (for some reason I have 30 days in my head but no basis for that).
Also, per comment from democratic initiatives below, this was a NOTICE of appeal — a required first step to file and appeal. This starts a 30 day clock for filing the appeal. That comment indicates the 30 day clock for posting the bond to stay the enforcement of the decision starts now. That gives Trump 30 days to post the bond or the money is dues then.
All the news stories speak of this as filing the appeal (and I didn’t know better). This clarifies the situation.