v3.19.3.a.u2

Condensed Statements of Cash Flows - USD ($) | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2019 | Sep. 30, 2018 | Dec. 31, 2018 | Dec. 31, 2017
Cash flows from operating activities |  |  |  |
Net loss | $ (9,688,127) | $ (10,243,605) | $ (16,868,711) | $ (7,863,858)
Adjustments to reconcile net loss to net cash used in operating activities: |  |  |  |
Depreciation | 4,550 | 4,257 | 5,721 | 5,720
Amortization of right-of-use assets | 78,341 |  |  |
Stock-based compensation | 363,730 | 561,755 | 645,823 | 895,498
Settlement of Covance accounts payable |  | (893,823) | (893,823) |
Loss on disposal of equipment |  |  |  | 1,627
Amortization of discount on available-for-sale debt securities | (9,769) |  | (19,789) |
Unrealized gain on available-for-sale securities | 923 |  | (923) |
Changes in operating assets and liabilities: |  |  |  |
Accrued interest receivable | 52,987 |  | (54,456) |
Prepaid expenses | (349,677) | (298,384) |  |
Prepaid expenses and other assets |  |  | (254,122) | (10,648)
Other assets | (10,000) |  | (12,399) |
Accounts payable | (1,945,831) | 786,723 | 3,168,559 | 341,211
Accrued expenses | (1,266,621) | (45,692) | 953,591 | (768,483)
Lease liabilities | (68,971) |  |  |
Other liabilities | (13,359) | (1,362) | (2,398) | 1,021
Net cash used in operating activities | (12,851,824) | (10,130,131) | (13,332,927) | (7,397,912)
Cash flows from (used in) investing activities |  |  |  |
Purchase of property and equipment | (1,589) | (2,008) | (2,008) | (7,678)
Sale of investments in marketable debt securities | 6,998,549 |  |  |
Purchase of investment in marketable securities |  |  | (6,968,991) |
Net cash flows from investing activities | 6,996,960 | (2,008) | (6,970,999) | (7,678)
Cash flows used in financing activities |  |  |  |
Proceeds from the issuance of preferred shares upon closing of private placement |  |  | 6,000,000 |
Commission and issuance costs of private placement |  |  | (512,530) |
Proceeds from the issuance of shares upon closing of follow-on offering |  |  |  | 23,029,750
Commission and issuance costs of follow-on offering |  |  |  | (2,038,471)
Proceeds from the issuance of shares from common stock purchase agreement |  |  |  | 2,000,000
Payout to stockholders for fractional shares |  | (3,256) | (3,256) |
Net cash used in financing activities |  | (3,256) | 5,484,214 | 22,991,279
Net (decrease) increase in cash and cash equivalents | (5,854,864) | (10,135,395) | (14,819,712) | 15,585,689
Cash and cash equivalents at beginning of period | 7,812,259 | 22,631,971 | 22,631,971 | 7,046,282
Cash and cash equivalents at end of period | 1,957,395 | 12,496,576 | 7,812,259 | 22,631,971
Supplemental disclosure of cash flow activities: |  |  |  |
Cash paid for taxes | 187,079 |  | 2,233 | 800
Supplemental disclosure of non-cash financing activities: |  |  |  |
Conversion of preferred stock to common stock | 4,257,975 | 1,784,327 |  |
Right-of-use assets obtained in exchange for lease liabilities | (198,319) |  |  |
Lease liabilities arising from obtaining right-of-use assets | $ 184,644 |  |  |
Deemed dividend on preferred stock |  |  | 2,537,844 | 3,111,020
Conversion of Series A and Series B preferred stock to common stock |  |  | 2,057,794 |
Conversion of Series A preferred stock to Series C preferred stock |  |  | $ 1,880,000 |

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- Definition The cash inflow associated with the amount received from entity's raising of capital via private rather than public placement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3255-108585 + Details
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- Definition The cash inflow associated with the aggregate amount received by the entity through sale or maturity of marketable securities (held-to-maturity or available-for-sale) during the period. + References No definition available. + Details
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- Definition Amount of increase in right-of-use asset obtained in exchange for operating lease liability. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 55 -Paragraph 53 -URI http://asc.fasb.org/extlink&oid=77888399&loc=SL77918982-209971 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (g)(2) -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980 + Details
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- Definition Amount of noncash expense for share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585 + Details
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