Soleno Therapeutics (SLNO) SC 13G Capnia, Inc.

EXHIBIT 99.l

JOINT FILING AGREEMENT

In accordance with Rule I 6a-3G) and Rule I 3d-I(k)( I ) and under the Securities Exchange Act of 1934, as amended, the undersigned agree to the joint filing on behalf of each of them of Schedules 13D and 130 (including any and all amendments thereto) with respect to the Common Stock, par value $0.001 per share, of Capnia, Inc. and further agree that this Joint Filing Agreement shall be included as an exhibit to such joint filings.

The undersigned further agree that each party hereto is responsible for the timely filing of such Forms Schedules 130 and 130 and any amendments thereto, and for the completeness and accuracy of the information concerning such party contained therein; provided that no party is responsible for the completeness or accuracy of the information concerning any other filing party, unless such party knows or has reason to believe that such information is inaccurate.

This Joint Filing Agreement may be executed in one or more counterparts, each of which shall be deemed to be an original instrument, but all of such counterparts together shall constitute one agreement.

In evidence thereof, the undersigned, being duly authorized, hereby execute this Joint Filing Agreement as of February 11, 2015.

BioAsia Management, LLC

By: /s/ Frank Kung

Name: Frank Kung

Title: Managing Member

Biotechnology Development Fund II, L.P.

By: /s/ Frank Kung

Name: Frank Kung

Title: Managing Member of BioAsia

Management, LLC; General Partner of

Biotechnology Development Fund II, L.P.

BioAsia Investments IV LLC

By: /s/ Frank Kung

Name: Frank Kung

Title: Managing Member

Biotechnology Development Fund IV, L.P.

By: /s/ Frank Kung

Name: Frank Kung

Title: Managing Member of BioAsia

Investments IV, LLC; General Partner of

Biotechnology Development Fund IV, L.P.

Biotechnology Development Fund IV Affiliates, L.P.

By: /s/ Frank Kung

Name: Frank Kung

Title: Managing Member of BioAsia

Investments IV, LLC; General Partner of

Biotechnology Development Fund IV Affiliates, L.P.

BDF IV Annex Fund, L.P.

By: /s/ Frank Kung

Name: Frank Kung

Title: Managing Member of BioAsia

Investments IV, LLC; General Partner of BDF

IV Annex Fund, L.P.

Vivo Ventures Fund V, LLC

By: /s/ Frank Kung

Name: Frank Kung

Title: Managing Member

Vivo Ventures Fund V, L.P.

By: /s/ Frank Kung

Name: Frank Kung

Title: Managing Member of Vivo Ventures Fund

V, LLC; General Partner of Vivo Ventures Fund

V, L.P.

Vivo Ventures V Affiliates Fund, L.P.

By: /s/ Frank Kung

Name: Frank Kung

Title: Managing Member of Vivo Ventures Fund

V, LLC; General Partner of Vivo Ventures V

Affiliates Fund, L.P.