Si Katara. (Tapp Finance Photo)

A new Seattle-based startup has raised $300,000 to build out an app that aims to democratize access to Wall Street strategies for everyday investors.

Seattle entrepreneur Si Katara launched Tapp Finance in February. The company provides tools to help people sell call options against shares they already own.

Selling call options lets investors collect small amounts of premium income. They face risks if a stock price surges beyond a call strike price.

Tapp Finance makes money by charging a 0.48% annual fee. The 2-person company registered with the Securities and Exchange Commission in September and rolled out two proof-of-concept applications this year. It plans to launch its first product early next year.

Katara previously co-founded HeadLight, a Seattle construction tech startup that launched in 2005. He left the company last year.

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