Salary vs. Shares – Need Advice

Absolute noob here and would really appreciate your opinions. Coming up for a pay review and my company has asked if I’d prefer a salary increase or shares in the company.

The company seems to be doing well overall, with some growth prospects in the pipeline, but nothing concrete yet.

What’s the best option here? Are there specific questions I should ask or factors I should consider before making my choice? The formal discussion hasn’t happened yet, so I have time to prepare. And what's the long term or short term goal here. Thanks in advance for any advice!