Steli Efti
Angel Investor
San Francisco, United States
Steli Efti is a seed investor in San Francisco focused on Podcast and Subscription Service. Steli is CEO and Co-Founder of Close.io (a platform that makes calls, sends emails, and conveniently automatically tracks all activity) and ElasticSales, where he helps thousands of startups succeed in scaling their sales efforts. He is an alumni of Y Combinator (they helped making companies like Dropbox, Airbnb, 9gag, and more). His companyhas received funding from Spark Capital, SV Angel, Start Fund, and Omidyar Networks as well as several notable angel investors.
- Total investments:
- 1
- Last investment:
- Lead investor:
- 0%
Last updated:
For AI agents: llms.txt
Industries Steli Efti invests in
Stages Steli Efti invests in
Countries Steli Efti invests in
Contacts
| Type | Contact | Validation |
|---|---|---|
| Work email | ||
| Personal email | ||
| Work phone | ||
| Personal phone | ||
| Socials |
Investment Focus
Industry
- Podcast 1 (100%)
- Subscription Service 1 (100%)
Investments
| Company | Description | Round | Links |
|---|---|---|---|
| Supercast is a startup that helps podcast creators make money off premium subscriptions. | $2M / Seed / Feb 25, 2020 |
Co-Investors
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FAQ
What does Steli Efti invest in?
Steli Efti invests primarily in Podcast and Subscription Service startups, most often at Seed stage. Most of the 1 investments tracked by Shizune back companies in Canada. The Investment Focus section breaks down every industry, stage and country in the portfolio.
How do I contact Steli Efti?
Public channels for Steli Efti include LinkedIn, X (Twitter) and Facebook. For a verified work email and phone number, create a free Shizune account — contact data is searched across 20+ sources and validated before delivery, so your outreach lands in the right inbox.
When did Steli Efti last invest?
The most recent investment recorded for Steli Efti closed in Feb 2020. Shizune tracks 1 investment in total for this profile, including round sizes, stages and portfolio companies, all sourced from confirmed public funding rounds and refreshed monthly.
Is Shizune's investor data accurate?
Yes — every stat on this profile is calculated from confirmed public funding rounds monitored across hundreds of sources since 2020. This profile was last refreshed in Oct 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.
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