Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidated Statements of Cash Flows (Unaudited)

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Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)
9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Cash flows from operating activities    
Net loss $ (7,011,394) $ (3,344,932)
Adjustments to reconcile net loss to net cash used in operating activities:    
Accrued income on marketable securities (10,633) (148)
Depreciation and amortization 173,047 182,866
Charge for obsolescence 218,799
Allowance for doubtful accounts 97,000 46,239
Amortization of deferred compensation 3,469 15,784
Share based compensation to employees - options 6,931 14,502
Share based compensation to employees - restricted stock 5,175
Share based compensation to non-employees - options 2,183
Share based compensation to non-employees - restricted stock 12,545 5,455
Changes in assets and liabilities:    
(Increase)/decrease in trade receivables 584,443 (570,065)
Decrease in trade receivables - related party 31,892
(Increase)/decrease in deposits and other receivables (13,836) 2,034
Increase in deposit and other receivables - related party (30,243)
Increase in inventories (79,162) (111,486)
(Increase)/decrease in prepaid expenses (367,860) 68,797
Decrease in prepaid expenses - related party 20,706 38,438
Increase in other assets (9,280)
Increase in trade and other payables 508,983 174,185
Increase/(decrease) in trade and other payables - related party 7,366 (213,822)
Increase in deferred revenue 12,500
Net cash used in operating activities (5,874,664) (3,654,858)
Cash flows from investing activities    
Purchases of property, plant and equipment (68,214) (37,191)
Purchases of marketable securities (5,309,998) (2,709,148)
Proceeds from sale of marketable securities 5,460,662 2,749,119
Net cash provided by investing activities 82,450 2,780
Cash flows from financing activities    
Net proceeds from issuance of common stock 3,413,311
Net proceeds from exercise of warrants for common stock 7,155,200 301,200
Net cash provided by financing activities 7,155,200 3,714,511
Net increase in cash and restricted cash 1,362,986 62,433
Cash and restricted cash at beginning of period 438,432 72,700
Cash and restricted cash at end of period 1,801,418 135,133
Supplemental Schedule of Non-Cash Financing and Investing Activities    
Net unrealized losses on marketable securities (5,543)
Conversion of Series B Preferred Stock to common shares $ 1,755,000