F1Represents options received in lieu of cash fees from Mr. Carano's service on the Issuer's Board of Directors as approved by the Board of Directors. The grant is effective September 12, 2017.
F2The Director Options became fully exerciseable on the date of the grant.
F3Not applicable
F4Includes Director Option to purchase 147 shares of Common Stock, which is held by Mr. Carano on behalf of Oak Investment Partners X, Limited Partnership ("Oak X"); Director Option to purchase 2 shares of Common Stock, which is held by Mr. Carano on behalf of Oak X Affiliates Fund, Limited Partnership ("Oak X Affiliates"); and Director Option to purchase 988 shares of Common Stock, which is held by Mr. Carano on behalf of Oak Investment Partners XIII, Limited Partnership ("Oak XIII"). Mr. Carano is a Managing Member of Oak Associates X, L.L.C., the General Partner of Oak X, a Managing Member of Oak X Affiliates, L.L.C., the General Partner of Oak X Affiliates and a Managing Member of Oak Associates XIII, L.L.C., the General Partner of Oak XIII.

Remarks

Bandel L. Carano is a Director of the Issuer. This Form 4 is being filed by Bandel L. Carano, Oak XIII, Oak X, Oak X Affiliates, Oak Investment Partners IX, Limited Partnership, Oak IX Affiliates Fund, Limited Partnership, and Oak IX Affiliates Fund-A, Limited Partnership, collectively the "Reporting Persons". Each Reporting Person disclaims the existence of a "group" and disclaims beneficial ownership of any securities (except to the extent of such Reporting Person's pecuniary interest in such securities) other than any securities reported herein as being directly owned by such Reporting Person, and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of any such securities for purposes of Section 16 or for any other purpose.