Exhibit 99.1

UNAUDITED INTERIM CONDENSED CONSOLIDATED STATEMENTS OF FINANCIAL POSITION

(Amounts in thousands of euros)

	As of
	June 30, 2018		December 31, 2017
	€		€
ASSETS
Non-current assets
Intangible assets		1,629		53
Property, plant and equipment, net		2,759		3,406
Other non-current financial assets		852		234
Total non-current assets		5,241		3,693
Current assets
Inventories		259		176
Trade and other receivables				76
Other current assets		11,237		5,791
Cash and cash equivalents		165,421		185,525
Total current assets		176,916		191,568
TOTAL ASSETS		182,156		195,261
	As of
	June 30, 2018		December 31, 2017
LIABILITIES AND SHAREHOLDERS’ EQUITY		€		€
Shareholders’ equity
Share capital		1,794		1,794
Premiums related to share capital		281,745		281,785
Reserves		(100,567)		(68,346)
Translation reserve		(190)		(203)
Net loss for the period		(18,970)		(33,530)
Total shareholders’ equity		163,812		181,419
Non-current liabilities
Long-term provisions		322		214
Financial liabilities – non-current portion		1,630		2,019
Deferred tax				3
Total non-current liabilities		1,952		2,236
Current liabilities
Financial liabilities – current portion		796		824
Trade and other payables		12,366		8,076
Other current liabilities		3,231		2,706
Total current liabilities		16,392		11,606
TOTAL LIABILITIES AND SHAREHOLDERS’ EQUITY		182,156		195,261