The following table sets forth transactions in the Common Stock effected by WFFTL within the past sixty days, which transactions were effected in the open market through brokers.

¹ The price per share excludes commissions.

² This transaction was executed in multiple trades at prices ranging from $1.865 to $2.03, inclusive. The price reported above reflects the weighted average sale price. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares of Common Stock sold at each separate price within the range set forth herein.

³ This transaction was executed in multiple trades at prices ranging from $2.4114 to $2.48, inclusive. The price reported above reflects the weighted average sale price. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares of Common Stock sold at each separate price within the range set forth herein.

⁴ This transaction was executed in multiple trades at prices ranging from $2.4114 to $2.48, inclusive. The price reported above reflects the weighted average sale price. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares of Common Stock sold at each separate price within the range set forth herein.

⁵ This transaction was executed in multiple trades at prices ranging from $0.7703 to $0.9239, inclusive. The price reported above reflects the weighted average sale price. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares of Common Stock sold at each separate price within the range set forth herein.

⁶ This transaction was executed in multiple trades at prices ranging from $0.6546 to $0.8178, inclusive. The price reported above reflects the weighted average sale price. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares of Common Stock sold at each separate price within the range set forth herein.

⁷ This transaction was executed in multiple trades at prices ranging from $0.6546 to $0.8178, inclusive. The price reported above reflects the weighted average sale price. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares of Common Stock sold at each separate price within the range set forth herein.

⁸ This transaction was executed in multiple trades at prices ranging from $0.5002 to $0.6919, inclusive. The price reported above reflects the weighted average sale price. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares of Common Stock sold at each separate price within the range set forth herein.

⁹ This transaction was executed in multiple trades at prices ranging from $0.55 to $0.7504, inclusive. The price reported above reflects the weighted average sale price. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares of Common Stock sold at each separate price within the range set forth herein.

The following table sets forth transactions in options in the Common Stock effected by WFFTL within the past sixty days, which transactions were effected in the open market through brokers.

¹⁰ The quantity of options reported in this table reflects number of option contracts, with each contract representing 100 shares of Common Stock.

¹¹ The price per share excludes commissions.

¹² This transaction was executed in multiple trades at prices ranging from $0.40 to $0.50, inclusive. The price reported above reflects the weighted average sale price. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares of options in the Common Stock sold at each separate price within the range set forth herein.

¹³ This transaction was executed in multiple trades at prices ranging from $0.30 to $0.32, inclusive. The price reported above reflects the weighted average sale price. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares of options in the Common Stock sold at each separate price within the range set forth herein.

¹⁴ This transaction was executed in multiple trades at prices ranging from $0.32 to $0.35, inclusive. The price reported above reflects the weighted average sale price. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares of options in the Common Stock sold at each separate price within the range set forth herein.

¹⁵ This transaction was executed in multiple trades at prices ranging from $2.25 to $2.30, inclusive. The price reported above reflects the weighted average purchase price. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares of options in the Common Stock purchased at each separate price within the range set forth herein.

¹⁶ This transaction was executed in multiple trades at prices ranging from $0.31 to $0.32, inclusive. The price reported above reflects the weighted average sale price. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares of options in the Common Stock sold at each separate price within the range set forth herein.

¹⁷ This transaction was executed in multiple trades at prices ranging from $0.30 to $0.34, inclusive. The price reported above reflects the weighted average sale price. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares of options in the Common Stock sold at each separate price within the range set forth herein.

¹⁸ This transaction was executed in multiple trades at prices ranging from $0.26 to $0.27, inclusive. The price reported above reflects the weighted average sale price. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares of options in the Common Stock sold at each separate price within the range set forth herein.

¹⁹ This transaction was executed in multiple trades at prices ranging from $0.30 to $0.31, inclusive. The price reported above reflects the weighted average sale price. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares of options in the Common Stock sold at each separate price within the range set forth herein.

²⁰ This transaction was executed in multiple trades at prices ranging from $0.28 to $0.38, inclusive. The price reported above reflects the weighted average sale price. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares of options in the Common Stock sold at each separate price within the range set forth herein.

²¹ This transaction was executed in multiple trades at prices ranging from $0.29 to $0.36, inclusive. The price reported above reflects the weighted average sale price. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares of options in the Common Stock sold at each separate price within the range set forth herein.

²² This transaction was executed in multiple trades at prices ranging from $0.13 to $0.16, inclusive. The price reported above reflects the weighted average sale price. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares of options in the Common Stock sold at each separate price within the range set forth herein.

²³ This transaction was executed in multiple trades at prices ranging from $0.10 to $0.11, inclusive. The price reported above reflects the weighted average sale price. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares of options in the Common Stock sold at each separate price within the range set forth herein.

²⁴ This transaction was executed in multiple trades at prices ranging from $0.19 to $0.20, inclusive. The price reported above reflects the weighted average sale price. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares of options in the Common Stock sold at each separate price within the range set forth herein.

²⁵ This transaction was executed in multiple trades at prices ranging from $0.50 to $0.80, inclusive. The price reported above reflects the weighted average sale price. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares of options in the Common Stock sold at each separate price within the range set forth herein.

²⁶ This transaction was executed in multiple trades at prices ranging from $0.08 to $0.11, inclusive. The price reported above reflects the weighted average sale price. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares of options in the Common Stock sold at each separate price within the range set forth herein.

²⁷ This transaction was executed in multiple trades at prices ranging from $0.08 to $0.09, inclusive. The price reported above reflects the weighted average sale price. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares of options in the Common Stock sold at each separate price within the range set forth herein.

²⁸ This transaction was executed in multiple trades at prices ranging from $0.04 to $0.09, inclusive. The price reported above reflects the weighted average sale price. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares of options in the Common Stock sold at each separate price within the range set forth herein.