| Summary of Significant Accounting Policies | Note 2 - Summary of Significant Accounting Policies Use of Estimates The preparation of financial statements in conformity with accounting
principles generally accepted in the United States of America (“U.S. GAAP”) requires management to make estimates and
assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the
date of the financial statements and reported amounts of revenues and expenses during the reporting period. The significant estimates
in the Company’s financial statements include the valuation of common stock and related warrants, and other stock-based awards.
Actual results could differ from such estimates. Reclassifications Certain prior year amounts have been reclassified
to conform to the current period presentation. These reclassifications had no impact on net earnings, financial position or cash
flows. Deferred Offering Costs Deferred offering costs consisted primarily of legal, accounting
and other direct and incremental fees and costs related to the Company’s initial public offering on December 8, 2016. Deferred
offering costs of $2,234 were offset against the proceeds received from the initial public offering in December 2016.There were
no deferred offering costs at June 30, 2017. Cash and Cash Equivalents The Company considers money market fund investments to be cash equivalents.
The Company had cash equivalents of $60 and $0 at June 30, 2017 and December 31, 2016, respectively, included in cash as reported. Investments In Securities Held To Maturity The Company uses cash holdings to purchase highly liquid, short
term, investment grade securities diversified among security types, industries and issuers. All of the Company’s investment
securities are measured at fair value. The Company’s investment securities primarily consist of municipal debt securities,
corporate bonds, U.S. agency securities and commercial paper and highly-liquid money market funds. Accounts Receivable Accounts receivable consist primarily of trade receivables. The
Company provides an allowance for doubtful trade receivables equal to the estimated uncollectible amounts. That estimate is based
on historical collection experience, current economic and market conditions and a review of the current status of each customer’s
trade accounts receivable. The allowance for doubtful trade receivables was $5 and $0 as of June 30, 2017 and December 31, 2016,
respectively. Inventories Inventories are stated at the lower of cost or market value, using
the first-in, first-out convention. Inventories consist of raw materials and finished goods. As of June 30, 2017 and December
31, 2016, the Company had inventories of $300 and $57, respectively. Prepaid Expenses Prepaid expenses consist primarily of payments made for director
and officer insurance, rent, legal and inventory purchase deposits and seminar fees to be expensed in the current year. Property and Equipment Property and equipment are stated at cost less accumulated depreciation.
Equipment held under capital leases are stated at the present value of minimum lease payments less accumulated amortization. Depreciation on property and equipment is computed using the straight-line
method over the estimated useful lives of the respective assets. The cost of leasehold improvements is amortized over the life
of the improvement or the term of the lease, whichever is shorter. Equipment held under capital leases is amortized over the shorter
of the lease term or estimated useful life of the asset. The Company incurs maintenance costs on its major equipment. Repair and
maintenance costs are expensed as incurred. Impairment of Long-Lived Assets Long-lived assets, such as property and equipment, are reviewed
for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable.
If circumstances require long-lived assets or asset groups to be tested for possible impairment, the Company compares the undiscounted
cash flows expected to be generated from the use of the asset or asset group to its carrying amount. If the carrying amount of
the long-lived asset or asset group is not recoverable on an undiscounted cash flow basis, an impairment charge is recognized to
the extent that the carrying amount exceeds its fair value. Fair value is determined through various valuation techniques, such
as discounted cash flow models and the use of third- party independent appraisals. The Company has not recorded an impairment of
long-lived assets since its inception. Revenue Recognition The Company recognizes revenue from the commercial sales of products,
licensing agreements and contracts to perform pilot studies when (i) persuasive evidence of an arrangement exists; (ii) the performance
of service has been rendered to a customer or delivery has occurred; (iii) the amount of fee to be paid by a customer is fixed
and determinable; and (iv) the collectability of the fee is reasonably assured. The Company has generated revenue from a license agreement with
a strategic partner, pursuant to which the Company had granted to such partner the exclusive right to manufacture and distribute
its product, ContraPest, once the required regulatory approvals were received (See Note 14). This licensing agreement was subsequently
terminated on January 23, 2017 (See Note 14). The terms of the licensing agreement contained multiple elements or deliverables,
as discussed below. Management evaluates whether the arrangement involving the multiple deliverables contains more than one unit
of accounting. To determine the units of accounting under a multiple-element arrangement, management evaluates certain separation
criteria, including whether the deliverables have stand-alone value, based on the relevant facts and circumstances of the arrangement. The Company determined that the license granted pursuant to the
license agreement did not have stand-alone value and, therefore, the nonrefundable, upfront license fee payments received by the
Company are recognized on a straight-line basis over the estimated related performance period (i.e. from the effective date of
the agreement through the estimated completion date of the Company’s substantive performance obligations). In accordance with the terms of the license agreement, the Company
was also to receive a future fixed amount of contingent milestone payments (i.e. post-regulatory approval license fees) and contingent
sales-based royalties to be received upon the achievement of certain milestone events. The milestone events under the agreement
include regulatory approval, patent issuance or alternative intellectual property coverage, and sales-based events. The Company
did not earn or receive any of the potential contingent milestone payments, as the milestone events to receive such post-approval
license fees and sales-based royalties were not achieved. The Company recognizes revenue that is contingent upon the achievement
of a substantive milestone event in its entirety in the period in which the milestone is achieved. A milestone is considered substantive
when the consideration payable to the Company for such milestone has all of the following characteristics: (i) there is substantive
uncertainty at the date the arrangement is entered into that the event will be achieved; (ii) the event can only be achieved based
in whole or part on either the Company’s performance or a specific outcome resulting from the Company’s performance;
and (iii) if achieved, the event would result in additional payments being due to the Company. As the potential contingent consideration
was to be received only upon the achievement of milestone events that are considered substantive, the Company would only recognize
such revenue in the period the milestone is achieved and the milestone payments became due and collectible. In addition, the Company
accounts for sales-based royalties as revenue upon achievement of certain sales milestones. Amounts received prior to satisfying the revenue recognition criteria
are recorded as deferred revenue on the balance sheet. Amounts expected to be recognized as revenue in the next twelve months following
the balance sheet date are classified as a current liability. The Company recognizes other revenue earned from pilot studies
upon the performance of specific services under the respective service contract. For the six months ended June 30, 2017, the Company generated net
revenues of $10. Research and Development Research and development costs are expensed as incurred. Research
and development expenses primarily consist of salaries and benefits for research and development employees, stock-based compensation,
consulting fees, lab supplies, and costs incurred related to conducting scientific trials and field studies, and regulatory compliance
costs. Also, included in research and development expenses is an allocation of facilities related costs, including depreciation
of research and development equipment. Stock-based Compensation Employee stock-based awards, consisting of restricted stock units
and stock options expected to be settled in shares of the Company’s common stock, are recorded as equity awards. The grant
date fair value of these awards is measured using the Black-Scholes option pricing model. The Company expenses the grant date fair
value of its stock options on a straight-line basis over their respective vesting periods. Performance-based awards are expensed
over the performance period when the related performance goals are probable of being achieved. For equity instruments issued to non-employees, the stock-based
consideration is measured using a fair value method. The measurement of the stock-based compensation is subject to re-measurement
as the underlying equity instruments vest. The stock-based compensation expense recorded for the three and
six months ended June 30, 2017 and 2016 is as follows:
Three Months Ended June 30, Six Months Ended June 30,
2017 2016 2017 2016
Research and development $ 90 $ 87 $ 184 $ 174
General and administrative 721 255 1,688 1,299
Total stock-based compensation expense $ 811 $ 342 $ 1,872 $ 1,473 Income Taxes The Company accounts for income taxes under the asset and liability
method, which requires the recognition of deferred tax assets and liabilities for the expected future tax consequences of events
that have been included in the financial statements. Under this method, deferred tax assets and liabilities are determined based
on the differences between the financial statements and tax bases of assets and liabilities and net operating loss carryforwards
using enacted tax rates in effect for the year in which the differences are expected to reverse. The effect of a change in tax
rates on deferred tax assets and liabilities is recognized in the period that includes the enactment date. The Company records net deferred tax assets to the extent it believes
these assets will more likely than not be realized. These deferred tax assets are subject to periodic assessments as to recoverability
and if it is determined that it is more likely than not that the benefits will not be realized, valuation allowances are recorded
which would increase the provision for income taxes. In making such determination, the Company considers all available positive
and negative evidence, including future reversals of existing taxable temporary differences, projected future taxable income,
tax planning strategies and recent financial operations. In November 2015, the Financial Accounting Standards Board (the
“FASB”) issued Accounting Standards Update No. 2015-17, Balance Sheet Classification of Deferred Taxes The Company applies a more-likely-than-not recognition threshold
for all tax uncertainties. Only those benefits that have a greater than fifty percent likelihood of being sustained upon examination
by the taxing authorities are recognized. Based on its evaluation, the Company has concluded there are no significant uncertain
tax positions requiring recognition in its financial statements. The Company recognizes interest and/or penalties related to uncertain
tax positions in income tax expense. There are no uncertain tax positions as of June 30, 2017 or December 31, 2016 and as such,
no interest or penalties were recorded in income tax expense. Comprehensive Loss Net loss and comprehensive loss were the same for all periods presented;
therefore, a separate statement of comprehensive loss is not included in the accompanying financial statements. Loss Per Share Attributable to Common Stockholders Basic loss per share attributable to common stockholders is calculated
by dividing the net loss attributable to common stockholders by the weighted average number of common shares outstanding during
the period. Diluted loss per share attributable to common stockholders is computed by dividing the loss attributable to common
stockholders by the weighted average number of common shares and potentially dilutive securities outstanding for the period determined
using the treasury stock and if-converted methods. For purposes of the computation of diluted loss per share attributable to common
stockholders, the Series A convertible preferred stock (prior to its conversion into common stock), Series B convertible preferred
stock (prior to its conversion into common stock), convertible promissory notes (prior to their conversion), common stock purchase
warrants, and common stock options are considered to be potentially dilutive securities but have been excluded from the calculation
of diluted loss per share attributable to common stockholders because their effect would be anti-dilutive given the net loss reported
for the three and six months ended June 30, 2017 and 2016. Therefore, basic and diluted loss per share attributable to common stockholders
was the same for all periods presented. The following table sets forth the outstanding potentially dilutive
securities that have been excluded in the calculation of diluted loss per share attributable to common stockholders (in common
stock equivalent shares):
June 30,
2017 2016
Series A convertible preferred stock — 400,000
Series B convertible preferred stock — 454,581
Convertible promissory notes — 533,031
Common stock purchase warrants 829,285 710,487
Restricted stock units 386,649 —
Common stock options 1,603,800 1,556,867
Total 2,819,734 3,654,966 In May 2017, the FASB issued Accounting Standard
Update (“ASU”) No. 2017-9, Compensation — Stock Compensation (Topic
718): Scope of Modification Accounting Per
ASU 2017-9, a ASU 2017-9 is effective for public business entities for annual and interim periods
in fiscal years beginning after December 15, 2017. ASU 2017-9 In May 2014 the FASB issued ASU No. 2014-09, Revenue
from Contracts with Customers. Since ASU 2014-09 was issued, several additional ASUs have been issued to clarify various elements
of the guidance. These standards provide guidance on recognizing revenue, including a five-step model to determine when revenue
recognition is appropriate. The standard requires that an entity recognize revenue to depict the transfer of control of promised
goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange
for those goods or services. Adoption of the new standard is effective for reporting periods beginning after December 15, 2017.
We plan to use the modified retrospective method of adoption and will adopt the standard as of January 1, 2018, the beginning of
our next fiscal year. We have completed an initial evaluation of the potential impact from adopting the new standard, including
a detailed review of performance obligations for all material revenue streams. Based on this initial evaluation, we do not expect
adoption will have a material impact on our financial position, results of operations, or cash flows. Related disclosures will
be expanded in line with the requirements of the standard. We will continue our evaluation until our adoption of the new standard. In August 2014, the FASB issued ASU No. 2014-15, Disclosures
of Uncertainties about an Entity’s Ability to Continue as a Going Concern In January 2016, the FASB issued ASU No. 2016-01, Financial
Instruments — Overall: Recognition and Measurement of Financial Assets and Financial Liabilities In February 2016, the FASB issued ASU No. 2016-02, Leases In March 2016, the FASB issued ASU No. 2016-09, Improvements
to Employee Share-Based Payment Accounting In August 2016, the FASB issued ASU No. 2016-15, Statement of
Cash Flows (Topic230): Classification of Certain Cash Receipts and Cash Payments |
