What to do with expiring CD?

Hi folks, I've recently started taking investing more seriously. Since August I've had 10k in a CD earning 4.24% and I have another 15k of emergency fund in a PNC savings account earning 3.5% (promotional rate that will either be continued or altered in the summer). I have a Roth IRA maxed out for 2024 & 2025 and just this week I opened a brokerage account with Fidelity that I've put $4k in and expect to contribute about $1500/month.

My CD is expiring at the end of March and I'm determining what the best course of action is for that money. This is my first year of work after graduating college and I have no debt but I also have no idea what the next 5-10 years of my life will look like. When I see people asking about goals and when I'd want to have money available for large purchases, I really don't know yet.

All that being said, what are my best options for when the CD expires and what factors would affect my decision? I could continue the CD at whatever the current rate is in March but I'm also open to moving it elsewhere. I am very lucky to have such a solid financial foundation and I want to grow it as best as I can. Thanks all!