Security	Date	Code	Shares	Price	A/D	Owned after	D/I	Nature of ownership
Common Stock^F1,F2	Nov 18, 2013	J	2,378,529	$0.00	D	0	I	By SAIL Venture Partners II, LP
Common Stock^F1,F3,F4	Nov 18, 2013	J	2,378,529	$0.00	A	2,378,529	I	By SVP II Xtreme Power Joint Venture, LP
Common Stock^F5,F3,F6	May 6, 2014	J	1,254,657	$0.00	A	1,254,657	I	By SAIL Exit Partners, LLC
Common Stock^F7,F4	Jun 6, 2014	J	2,378,529	$0.00	D	0	I	By SVP II Xtreme Power Joint Venture, LP
Common Stock^F7,F3,F6	Jun 6, 2014	J	2,378,529	$0.00	A	3,633,186	I	By SAIL Exit Partners, LLC
Common Stock^F3,F6	Dec 15, 2014	L	5,000	$0.50	A	3,638,186	I	By SAIL Exit Partners, LLC

Table II — derivative securities

Security	Conv. / exercise price	Date	Code	Shares	A/D	Exercisable	Expires	Underlying	Underlying shares	Owned after	D/I
Series B Warrant (Right to Buy)^F1,F2,F8	$2.01	Nov 18, 2013	J	515,944	D	Sep 4, 2013	—	Common Stock	515,944	0	I
Series C Warrant (Right to Buy)^F1,F2,F8	$2.74	Nov 18, 2013	J	82,054	D	Sep 4, 2013	—	Common Stock	82,054	0	I
Series D Warrant (Right to Buy)^F1,F2	$2.66	Nov 18, 2013	J	123,911	D	Sep 4, 2013	Dec 31, 2017	Common Stock	123,911	0	I
Series B Warrant (Right to Buy)^F1,F3,F4,F8	$2.01	Nov 18, 2013	J	515,944	A	Sep 4, 2013	—	Common Stock	515,944	515,944	I
Series C Warrant (Right to Buy)^F1,F3,F4,F8	$2.74	Nov 18, 2013	J	82,054	A	Sep 4, 2013	—	Common Stock	82,054	82,054	I
Series D Warrant (Right to Buy)^F1,F3,F4	$2.66	Nov 18, 2013	J	123,911	A	Sep 4, 2013	Dec 31, 2017	Common Stock	123,911	123,911	I
Series C Warrant (Right to Buy)^F9,F3,F6,F8	$2.74	May 6, 2014	J	27,352	A	Sep 4, 2013	—	Common Stock	27,352	27,352	I
Series D Warrant (Right to Buy)^F10,F3,F6	$2.66	May 6, 2014	J	191,498	A	Sep 4, 2013	Dec 31, 2017	Common Stock	191,498	191,498	I
Series B Warrant (Right to Buy)^F7,F4,F8	$2.01	Jun 6, 2014	J	515,944	D	Sep 4, 2013	—	Common Stock	515,944	0	I
Series C Warrant (Right to Buy)^F7,F4,F8	$2.74	Jun 6, 2014	J	82,054	D	Sep 4, 2013	—	Common Stock	82,054	0	I
Series D Warrant (Right to Buy)^F7,F4	$2.66	Jun 6, 2014	J	123,911	D	Sep 4, 2013	Dec 31, 2017	Common Stock	123,911	0	I
Series B Warrant (Right to Buy)^F7,F3,F6,F8	$2.01	Jun 6, 2014	J	515,944	A	Sep 4, 2013	—	Common Stock	515,944	515,944	I
Series C Warrant (Right to Buy)^F7,F3,F6,F8	$2.74	Jun 6, 2014	J	82,054	A	Sep 4, 2013	—	Common Stock	82,054	109,406	I
Series D Warrant (Right to Buy)^F7,F3,F6	$2.66	Jun 6, 2014	J	123,911	A	Sep 4, 2013	Dec 31, 2017	Common Stock	123,911	315,409	I

Explanation of responses

F1The securities were transferred by SAIL Venture Partners II, LP to SVP II Xtreme Power Joint Venture, LP, an affiliate of SAIL Venture Partners II, LP, in exchange for Class A Membership interests in SVP II Xtreme Power Joint Venture, LP.
F10The securities were transferred from SAIL Pre-Exit Acceleration Fund, LP and SAIL Sustainable Louisiana II, LP, affiliates of the reporting entities, to SAIL Exit Partners, LLC, in exchange for Class A Membership interests in SAIL Exit Partners, LLC.
F2These securities are owned directly by SAIL Venture Partners II, LP, of which SAIL Venture Partners II, LLC is the general partner, of which SAIL Venture Management, LLC is the manager. SAIL Venture Partners II, LLC and SAIL Venture Management, LLC are indirect beneficial owners of the reported securities.
F3The reporting entities disclaim beneficial ownership of these securities except to the extent of their pecuniary interest therein, and this report shall not be deemed an admission that the reporting entities are the beneficial owners of these securities for Section 16 or any other purpose.
F4These securities are owned directly by SVP II Xtreme Power Joint Venture, LP, of which SAIL Venture Partners II, LLC is the general partner, of which SAIL Venture Management, LLC is the manager. SAIL Venture Partners II, LLC and SAIL Venture Management, LLC are indirect beneficial owners of the reported securities.
F5The shares were transferred from SAIL Venture Partners, LP, SAIL Sustainable Louisiana II, LP, SAIL 2010 Co-Investment Partners, LP, and SAIL Pre-Exit Acceleration Fund, LP, various affiliates of the reporting entities, to SAIL Exit Partners, LLC, in exchange for Class A Membership interests in SAIL Exit Partners, LLC. The shares transferred were valued at $0.62 per share.
F6These securities are owned directly by SAIL Exit Partners, LLC, of which SAIL Venture Partners II, LLC is the manager, of which SAIL Venture Management, LLC is the manager. SAIL Venture Partners II, LLC and SAIL Venture Management, LLC are indirect beneficial owners of the reported securities.
F7The securities were transferred from SVP II Xtreme Power Joint Venture, LP to SAIL Exit Partners, LLC automatically on the effective date of the merger of SVP II Xtreme Power Joint Venture, LP with and into SAIL Exit Partners, LLC.
F8The warrant does not have an expiration date.
F9The securities were transferred from SAIL 2010 Co-Investment Partners, LP, an affiliate of the reporting entities, to SAIL Exit Partners, LLC, in exchange for Class A Membership interests in SAIL Exit Partners, LLC.