Our Story

About us

Sidestarter was founded by Jonathan Aspatore, a serial entrepreneur who has started many companies over the last 25 years.

Through the course of his companies, he’s had the opportunity to work with C-Level executives at over 50% of the Fortune 500, 90% of the AmLaw 200, and venture capitalists and elite professionals from most of the top names in the business world. He's helped them publish a book, lead a webinar, and join advisory boards...and the next chapter of this is starting a business.

Throughout his experience, he’s seen first hand the incredible business ideas from more mature professionals, who aren’t sure how to get started or find the resources needed to bring their ideas to life - especially that works for them in their stage of life.

And that’s why we started Sidestarter. And we’d love to help turn your idea into a reality if it’s a fit with our team and our shared alignment of what success means for your business.

Sidestarter is headquartered just north of San Francisco in California and has employees all across the United States, with an upcoming office set to open in Italy in 2026.