10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 10-Q

☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended June 30, 2021

OR

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from                      to                     

Commission file number: 001-38293

SCPHARMACEUTICALS INC.

(Exact name of registrant as specified in its charter)

Delaware	46-5184075
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)

2400 District Avenue, Suite 310	01803
Burlington, Massachusetts	(Zip Code)
(Address of principal executive office)

Registrant’s telephone number, including area code: (617) 517-0730

Securities registered pursuant to Section 12(b) of the Act:

Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Common stock, par value $0.0001	SCPH	The Nasdaq Global Select Market

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes   ☒     No   ☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).    Yes   ☒    No   ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer	☐	Accelerated filer	☐
Non-accelerated filer	☒	Smaller reporting company	☒
Emerging growth company	☒

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.  ☒   

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).    Yes    ☐      No    ☒

As of August 10, 2021, the Registrant had 27,355,454 common shares, $0.0001 par value per share, outstanding.

FORWARD-LOOKING STATEMENTS

This Quarterly Report on Form 10-Q contains express or implied forward-looking statements that are based on our management’s belief and assumptions and on information currently available to our management. Although we believe that the expectations reflected in these forward-looking statements are reasonable, these statements relate to future events or our future operational or financial performance, and involve known and unknown risks, uncertainties and other factors that may cause our actual results, performance or achievements to be materially different from any future results, performance or achievements expressed or implied by these forward-looking statements. Forward-looking statements in this Quarterly Report on Form 10-Q include, but are not limited to, statements about:

• the completion of activities required for the resubmission of the FUROSCIX^® new drug application, or NDA, with West’s proprietary on-body infusor on our current projected timelines and subsequent review and potential approval by the U.S. Food and Drug Administration, or FDA, including any delays in submission or approval related to COVID-19;

• the likelihood of approval by the FDA of our regulatory filings for FUROSCIX using our next generation delivery device;

• the timing or likelihood of other regulatory filings and approvals;

• the outcome of any bridging studies, clinical trials or human factors studies that may be required by the FDA for approval of any of our product candidates;

• the commercialization of FUROSCIX, if approved, including launch preparation, ability to interact with physicians, patient access to FUROSCIX or manufacturing and supply chain matters;

• the pricing, reimbursement or pharmacoeconomic benefit of FUROSCIX or any other of our product candidates, if approved;

• the rate and degree of market acceptance and clinical utility of FUROSCIX or any other of our product candidates for which we receive marketing approval;

• the initiation, timing, progress and results of our research and development programs, including future preclinical and clinical studies;

• our ability to advance any other product candidates into, and successfully complete, clinical studies and obtain regulatory approval for them;

• our ability to identify additional product candidates;

• the implementation of our strategic plans for our business, product candidates and technology;

• the scope of protection we are able to establish and maintain for intellectual property rights covering FUROSCIX or any other of our product candidates and technology;

• estimates of our expenses, future revenues, capital requirements and our needs for additional financing;

• our ability to manufacture, or the ability of third parties to deliver, sufficient quantities of components and drug product for commercialization of FUROSCIX or any other of our product candidates;

• our ability to maintain and establish collaborations;

• our financial performance;

• developments relating to our competitors and our industry, including the impact of government regulation; and

• other risks and uncertainties, including those listed under the caption “Risk Factors” in our Annual Report on Form 10-K for the year ended December 31, 2020.

In some cases, forward-looking statements can be identified by terminology such as “may,” “should,” “expects,” “intends,” “plans,” “anticipates,” “believes,” “estimates,” “predicts,” “potential,” “continue” or the negative of these terms or other comparable terminology. These statements are only predictions. You should not place undue reliance on forward-looking statements because they involve known and unknown risks, uncertainties and other factors, which are, in some cases, beyond our control and which could materially affect results. Factors that may cause actual results to differ materially from current expectations include, among other things, those set forth in Item 1A, “Risk Factors” and elsewhere in our Annual Report on Form 10-K for the year ended December 31, 2020, which was filed with the Securities and Exchange Commission on March 23, 2021, as well as in our subsequent filings with the Securities and Exchange Commission. If one or more of these risks or uncertainties occur, or if our underlying assumptions prove to be incorrect, then actual events or results may vary significantly from those implied or projected by the forward-looking statements. No forward-looking statement is a guarantee of future performance. While we may elect to update these forward-looking statements at some point in the future, we have no current intention of doing so except to the extent required by applicable law. You should therefore not rely on these forward-looking statements as representing our views as of any date subsequent to the date of this Quarterly Report on Form 10-Q.

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SCPHARMACEUTICALS INC.

INDEX

		Page
PART I – FINANCIAL INFORMATION
Item 1.	Condensed Consolidated Financial Statements (unaudited)
	Condensed Consolidated Balance Sheets as of December 31, 2020 and June 30, 2021	1
	Condensed Consolidated Statements of Operations and Comprehensive Loss for the Three and Six Months Ended June 30, 2020 and June 30, 2021	2
	Condensed Consolidated Statements of Stockholders’ Equity for the Three and Six Months Ended June 30, 2020 and June 30, 2021	3
	Condensed Consolidated Statements of Cash Flows for the Six Months Ended June 30, 2020 and June 30, 2021	4
	Notes to Condensed Consolidated Financial Statements	5
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	14
Item 3.	Quantitative and Qualitative Disclosures About Market Risk	19
Item 4.	Controls and Procedures	20
PART II – OTHER INFORMATION
Item 1.	Legal Proceedings	21
Item 1A.	Risk Factors	21
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	21
Item 3.	Defaults Upon Senior Securities	21
Item 4.	Mine Safety Disclosures	21
Item 5.	Other Information	21
Item 6.	Exhibits	21
Exhibit Index		22
Signatures		23

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PART I — FINANCIAL INFORMATION

SCPHARMACEUTICALS INC.

CONDENSED CONSOLIDATED BALANCE SHEETS

(In thousands, except share and per share amounts)

(Unaudited)

	December 31,			June 30,
	2020			2021
Assets
Current assets
Cash and cash equivalents	$	71,819		$	74,969
Short-term investments		33,276			15,052
Prepaid expenses		2,610			2,396
Other current assets		121			75
Total current assets		107,826			92,492
Restricted cash		182			182
Property and equipment, net		93			77
Right-of-use lease assets - operating, net		815			616
Deposits and other assets		132			248
Total assets	$	109,048		$	93,615
Liabilities and Stockholders’ Equity
Current liabilities
Accounts payable	$	1,666		$	531
Accrued expenses		4,787			3,579
Term loan, short-term		2,408			7,293
Lease obligation - operating, short-term		460			485
Total current liabilities		9,321			11,888
Term loan, long-term		16,858			12,156
Lease obligation - operating, long-term		480			229
Other liabilities		219			299
Total liabilities		26,878			24,572
Commitments and contingencies (Note 11)
Stockholders’ equity
Preferred stock, $0.0001 par value; 10,000,000 shares authorized and no shares    issued and outstanding		-			-
Common stock, $0.0001 par value; 150,000,000 shares authorized as of    June 30, 2021; 27,325,959 and 27,355,454 shares issued and outstanding    as of December 31, 2020 and June 30, 2021, respectively		3			3
Additional paid-in capital		243,830			244,868
Accumulated deficit		(161,664	)		(175,828	)
Accumulated other comprehensive gain		1			-
Total stockholders’ equity		82,170			69,043
Total liabilities and stockholders’ equity	$	109,048		$	93,615

The accompanying notes are an integral part of these unaudited condensed consolidated financial statements. 

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SCPHARMACEUTICALS INC.

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS

(In thousands, except share and per share amounts)

(Unaudited)

	Three Months Ended June 30,						Six Months Ended June 30,
	2020			2021			2020			2021
Operating expenses:
Research and development	$	5,139		$	3,807		$	9,285		$	7,816
General and administrative		2,537			2,649			5,040			5,381
Total operating expenses		7,676			6,456			14,325			13,197
Loss from operations		(7,676	)		(6,456	)		(14,325	)		(13,197	)
Other (expense) income		(1	)		33			(32	)		288
Interest income		21			12			245			32
Interest expense		(639	)		(651	)		(1,275	)		(1,287	)
Net loss	$	(8,295	)	$	(7,062	)	$	(15,387	)	$	(14,164	)
Net loss per share — basic and diluted	$	(0.36	)	$	(0.26	)	$	(0.71	)	$	(0.52	)
Weighted average common shares outstanding — basic and diluted		23,355,418			27,355,454			21,786,946			27,346,141
Other comprehensive loss:
Unrealized gain (loss) on short-term investments	$	-		$	1		$	-		$	(1	)
Comprehensive loss	$	(8,295	)	$	(7,061	)	$	(15,387	)	$	(14,165	)

The accompanying notes are an integral part of these unaudited condensed consolidated financial statements.

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SCPHARMACEUTICALS INC.

CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY

(In thousands, except share amounts)

(Unaudited)

					ADDITIONAL						OTHER			TOTAL
	COMMON STOCK				PAID-IN			ACCUMULATED			COMPREHENSIVE			STOCKHOLDERS'
	SHARES		AMOUNT		CAPITAL			DEFICIT			INCOME			EQUITY
At December 31, 2020		27,325,959	$	3	$	243,830		$	(161,664	)	$	1		$	82,170
Net loss		—		—		—			(7,102	)		—			(7,102	)
Issuance of common stock upon exercise    of stock options		2,500		—		9			—			—			9
Vesting of restricted stock		26,994		—		(81	)		—			—			(81	)
Stock-based compensation		—		—		521			—			—			521
Unrealized loss on short-term investments		—		—		—			—			(2	)		(2	)
At March 31, 2021		27,355,453		3		244,279			(168,766	)		(1	)		75,515
Net loss		—		—		—			(7,062	)		—			(7,062	)
Issuance of common stock upon exercise    of stock options		1		—		—			—			—			—
Stock-based compensation		—		—		589			—			—			589
Unrealized gain on short-term investments		—		—		—			—			1			1
At June 30, 2021		27,355,454	$	3	$	244,868		$	(175,828	)	$	—		$	69,043
At December 31, 2019		19,418,955	$	2	$	180,818		$	(129,455	)	$	—		$	51,365
Net loss		—		—		—			(7,092	)		—			(7,092	)
Issuance of common stock under at-the-market offering    net of commissions and issuance costs (Note 9)		1,502,892		—		10,253			—			—			10,253
Issuance of common stock upon exercise    of stock options		30,143		—		154			—			—			154
Vesting of restricted stock		29,890		—		(84	)		—			—			(84	)
Stock-based compensation		—		—		508			—			—			508
At March 31, 2020		20,981,880		2		191,649			(136,547	)		—			55,104
Net loss		—		—		—			(8,295	)		—			(8,295	)
Common stock offering, net of commissions and    issuance costs (Note 9)		6,220,589		1		50,147			—			—			50,148
Issuance of common stock upon exercise    of stock options		85,528		—		561			—			—			561
Vesting of restricted stock		—		—		(80	)		—			—			(80	)
Stock-based compensation		—		—		621			—			—			621
At June 30, 2020		27,287,997	$	3	$	242,898		$	(144,842	)	$	—		$	98,059

The accompanying notes are an integral part of these unaudited condensed consolidated financial statements.

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SCPHARMACEUTICALS INC.

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(In thousands)

(Unaudited)

	Six Months Ended June 30,
	2020			2021
Cash flows from operating activities
Net loss	$	(15,387	)	$	(14,164	)
Adjustments to reconcile net loss to cash used in operating activities
Depreciation expense		17			16
Amortization expense - right-of-use leased assets - operating		177			199
Accretion of discount on investments		(1	)		115
Stock-based compensation		1,129			1,110
Non-cash interest expense		246			263
Fair value adjustment to derivative liability		30			-
Changes in operating assets and liabilities
Prepaid expenses and other assets		(259	)		143
Accounts payable, accrued expenses and other liabilities		343			(2,568	)
Net cash used in operating activities		(13,705	)		(14,886	)
Cash flows from investing activities
Maturities of short-term investments		-			26,100
Purchases of short-term investments		(40,469	)		(7,992	)
Net cash (used in) provided by investing activities		(40,469	)		18,108
Cash flows from financing activities
Proceeds from common stock offering, net		50,191			-
Proceeds from at-the-market offering, net		10,388			-
Proceeds from the exercise of vested stock options		715			9
Payment of term loan exit fee		(800	)		-
Settlements of restricted stock units for tax withholding obligations		(84	)		(81	)
Net cash provided by (used in) financing activities		60,410			(72	)
Net increase in cash, cash equivalents and restricted cash		6,236			3,150
Cash, cash equivalents and restricted cash at beginning of period		72,806			72,001
Cash, cash equivalents and restricted cash at end of period	$	79,042		$	75,151
Supplemental cash flow information
Interest paid	$	1,436		$	1,114
Taxes paid	$	144		$	125
Supplemental non-cash information
Transfer of issuance costs from other noncurrent assets to equity	$	135		$	-

The accompanying notes are an integral part of these unaudited condensed consolidated financial statements.

4

SCPHARMACEUTICALS INC.

Notes to Unaudited Condensed Consolidated Financial Statements

1. Description of Business and Basis of Presentation

Description of Business

scPharmaceuticals LLC was formed as a limited liability company under the laws of the State of Delaware on February 19, 2013. On March 24, 2014, scPharmaceuticals LLC was converted to a Delaware corporation and changed its name to scPharmaceuticals Inc. (“the Company”). The Company is a pharmaceutical company focused on developing and commercializing products that have the potential to optimize the delivery of infused therapies, advance patient care and reduce healthcare costs. The Company’s strategy is designed to enable the subcutaneous administration of therapies that have previously been limited to intravenous (“IV”) delivery. The Company’s headquarters and primary place of business is Burlington, Massachusetts.

Basis of Presentation

The accompanying condensed consolidated financial statements have been prepared in conformity with accounting principles generally accepted in the United States (“U.S. GAAP”) for interim financial information and have been prepared on a basis which assumes that the Company will continue as a going concern, which contemplates the realization of assets and the satisfaction of liabilities and commitments in the normal course of business. The condensed consolidated financial statements reflect the operations of the Company and its wholly-owned subsidiary, scPharmaceuticals Securities Corporation. Certain information and disclosures normally included in financial statements in accordance with U.S. GAAP have been condensed or omitted. Accordingly, these condensed consolidated financial statements should be read in conjunction with the Company’s audited financial statements and related notes for the year ended December 31, 2020 included in the Company’s Annual Report on Form 10-K filed with the Securities and Exchange Commission (the “SEC”) on March 23, 2021. The Company has determined that it operates in one segment.

The accompanying condensed consolidated balance sheet as of June 30, 2021, the condensed consolidated statements of operations and comprehensive loss and stockholders’ equity for the three and six months ended June 30, 2020 and 2021 and condensed consolidated statements of cash flows for the six months ended June 30, 2020 and 2021 are unaudited. The unaudited condensed consolidated financial statements have been prepared on a basis consistent with that used to prepare the Company’s audited annual financial statements and include, in the opinion of management, adjustments, consisting of normal recurring items, necessary for the fair statement of the condensed consolidated financial statements. The operating results for the three and six months ended June 30, 2021 are not necessarily indicative of the results expected for the full year ending December 31, 2021.

Liquidity

As of June 30, 2021, the Company had an accumulated deficit of approximately $175.8 million. Management expects to continue to incur operating losses for the foreseeable future. The Company has financed its operations to date from proceeds from the sale of common stock, preferred stock and the incurrence of debt.

As of June 30, 2021, the Company had cash, cash equivalents, restricted cash, and short-term investments of $90.2 million. The Company believes that its existing cash, cash equivalents, restricted cash and short-term investments will be sufficient to meet its cash commitments for at least the next 12 months after the date that the interim condensed consolidated financial statements are issued. 

2. Significant Accounting Policies

Use of Estimates

The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of expenses during the reported periods. Actual results could differ from those estimates.

Cash, Cash Equivalents and Restricted Cash

Cash, cash equivalents and restricted cash consists of bank deposits and money market accounts with financial institutions. Cash equivalents are carried at cost which approximates fair value due to their short-term nature and which the Company believes do not have a material exposure to credit risk. The Company considers all highly liquid investments with maturities of three months or less from the date of purchase to be cash equivalents. The Company’s cash and cash equivalent accounts, at times, may exceed federally insured limits. The Company has not experienced any losses in such accounts.

5

As of June 30, 2021, the Company classified $182,000 as restricted cash related to a letter of credit issued as a security deposit in connection with the Company’s lease of its corporate office facilities (Note 11). Cash, cash equivalents and restricted cash consists of the following (in thousands):

	December 31, 2020		June 30, 2021
Cash and cash equivalents	$	71,819	$	74,969
Restricted cash		182		182
Cash, cash equivalents and restricted cash	$	72,001	$	75,151

Concentration of Credit Risk

Financial instruments that subject the Company to credit risk primarily consist of cash and cash equivalents and short-term investments. The Company maintains its cash and cash equivalent balances with high-quality financial institutions and, consequently, the Company believes that such funds are subject to minimal credit risk. The Company’s short-term investments consist of United States Treasury securities, corporate debt securities and commercial paper. The Company has adopted an investment policy that limits the amounts the Company may invest in any one type of investment and requires all investments held by the Company to hold a minimum rating, thereby reducing credit risk exposure.

Investments

The Company invests excess cash balances in available-for-sale debt securities. The Company determines the appropriate classification of these securities at the time they are acquired and evaluates the appropriateness of such classifications at each balance sheet date. The Company reports available-for-sale investments at fair value at each balance sheet date and includes any unrealized gains and losses in accumulated other comprehensive income (loss), a component of stockholders’ equity. Realized gains and losses are determined using the specific identification method and are included in other income (expense). If any adjustment to fair value reflects a decline in the value of the investment, the Company considers all available evidence to evaluate the extent to which the decline is “other than temporary,” including the intention to sell and, if so, marks the investment to market through a charge to the Company’s consolidated statements of operations and comprehensive loss.

Leases

The Company determines if an arrangement is a lease at inception. Operating leases are included in right-of-use (“ROU”) lease assets, current portion of lease obligations, and long-term lease obligations on the Company’s balance sheets.  

ROU lease assets represent the Company’s right to use an underlying asset for the lease term and lease obligations represent the Company’s obligation to make lease payments arising from the lease. Operating ROU lease assets and obligations are recognized at the commencement date based on the present value of lease payments over the lease term. As most of the Company’s leases do not provide an implicit rate, the Company uses its incremental borrowing rate based on the information available at the commencement date in determining the present value of lease payments. The ROU lease asset excludes lease incentives. The Company’s lease terms may include options to extend or terminate the lease when it is reasonably certain that the Company will exercise that option. Lease expense for lease payments is recognized on a straight-line basis over the lease term.

Income Taxes

The Company accounts for income taxes in accordance with the Financial Accounting Standards Board’s (“FASB”) Accounting Standards Codification (“ASC”) 740, Income Taxes. Deferred tax assets and liabilities are recorded to reflect the impact of temporary differences between amounts of assets and liabilities for financial reporting purposes and such amounts as measured under enacted tax laws. A valuation allowance is required to offset any net deferred tax assets if, based upon the available evidence, it is more likely than not that some or all of the deferred tax asset will not be realized.

The Company provides reserves for potential payments of tax to various tax authorities related to uncertain tax positions. The tax benefits recorded are based on a determination of whether and how much of a tax benefit taken by the Company in its tax filings or positions is “more likely than not” to be realized following resolution of any uncertainty related to the tax benefit, assuming that the matter in question will be raised by the tax authorities. Potential interest and penalties associated with such uncertain tax positions are recorded as a component of income tax expense. At June 30, 2021, the Company had no such accruals.

6

3. Net Loss per Share

Net Loss per Share Attributable to Common Stockholders

The following table sets forth the computation of basic and diluted net loss per share of common stock (in thousands, except share and per share data):

	Three Months Ended June 30,						Six Months Ended June 30,
	2020			2021			2020			2021
Net loss	$	(8,295	)	$	(7,062	)	$	(15,387	)	$	(14,164	)
Weighted-average shares used in computing net loss per share		23,355,418			27,355,454			21,786,946			27,346,141
Net loss per share, basic and diluted	$	(0.36	)	$	(0.26	)	$	(0.71	)	$	(0.52	)

The Company’s potentially dilutive securities, which include stock options and unvested restricted stock units, have been excluded from the computation of diluted net loss per share as the effect would be to reduce the net loss per share. Therefore, the weighted average number of common shares outstanding used to calculate both basic and diluted net loss per share attributable to common stockholders is the same. The Company excluded the following potential common shares, presented based on amounts outstanding at each period end, from the computation of diluted net loss per share attributable to common stockholders for the periods indicated because including them would have had an anti-dilutive effect.

	Three Months Ended June 30,				Six Months Ended June 30,
	2020		2021		2020		2021
Stock options to purchase common stock		2,029,843		2,677,368		2,029,843		2,677,368
Unvested restricted stock units		80,450		42,250		80,450		42,250
Total		2,110,293		2,719,618		2,110,293		2,719,618

4. Investments

Cash in excess of the Company’s immediate requirements is invested in accordance with the Company’s investment policy that primarily seeks to maintain adequate liquidity and preserve capital.

A summary of the Company’s available-for-sale classified investments as of June 30, 2021 consisted of the following (in thousands):

	At June 30, 2021
Investments - Current:	Cost Basis		Accumulated Unrealized Gains		Accumulated Unrealized Losses		Fair Value
United States Treasury securities	$	1,850	$	-	$	-	$	1,850
Corporate debt securities		2,007		-		-		2,007
Commercial paper		11,195		-		-		11,195
Total	$	15,052	$	-	$	-	$	15,052

The amortized cost and fair value of the Company’s available-for-sale investments, by contract maturity, as of June 30, 2021 consisted of the following (in thousands):

	Amortized Cost		Fair Value
Due in one year or less	$	15,052	$	15,052
Total	$	15,052	$	15,052

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5. Property and Equipment

Purchased property and equipment consist of the following (dollars in thousands):

	ESTIMATED USEFUL LIFE	December 31, 2020			June 30, 2021
Office equipment	5 years	$	10		$	10
Office furniture	7 years		116			116
Computer equipment	3 years		8			8
Leasehold improvements	Life of lease		95			95
			229			229
Less: Accumulated depreciation			(136	)		(152	)
Property and equipment, net		$	93		$	77

Depreciation expense for the three months ended June 30, 2020 and June 30, 2021 was $9,000 and $8,000, respectively.

Depreciation expense for the six months ended June 30, 2020 and June 30, 2021 was $17,000 and $16,000, respectively.

6. Accrued Expenses

Accrued expenses consist of the following (in thousands):

	December 31, 2020		June 30, 2021
Contract research and development	$	2,274	$	2,069
Employee compensation and related costs		1,978		1,000
Consulting and professional service fees		364		297
Interest		88		85
Financing related costs		43		69
Deposit liability		-		40
State taxes		40		19
Total accrued expenses	$	4,787	$	3,579

7. Fair Value of Financial Instruments

The FASB ASC Topic, Fair Value Measurements and Disclosures (“ASC 820”), provides a fair value hierarchy, which classifies fair value measurements based on the inputs used in measuring fair value. Observable inputs are inputs that market participants would use in pricing the asset or liability based on market data obtained from sources independent of the Company. Unobservable inputs are inputs that reflect the Company’s assumptions about the inputs that market participants would use in pricing the asset or liability, and are developed based on the best information available in the circumstances. The fair value hierarchy applies only to the valuation inputs used in determining the reported fair value of the investments and is not a measure of the investment credit quality. The three levels of the fair value hierarchy are described below:

Level 1—Valuations based on unadjusted quoted prices in active markets for identical assets or liabilities that the Company has the ability to access at the measurement date.

Level 2—Valuations based on quoted prices for similar assets or liabilities in markets that are not active or for which all significant inputs are observable, either directly or indirectly.

Level 3—Valuations that require inputs that reflect the Company’s own assumptions that are both significant to the fair value measurement and observable.

To the extent that valuation is based on models or inputs that are less observable or unobservable in the market, the determination of fair value requires more judgment. Accordingly, the degree of judgment exercised by the Company in determining fair value is greatest for instruments categorized in Level 3. A financial instrument’s level within the fair value hierarchy is based on the lowest level of any input that is significant to the fair value measurement.

The carrying values of the Company’s cash and restricted cash, prepaid expenses and deposits approximate their fair values due to their short-term nature. The carrying value of the Company’s loan payable was considered a reasonable estimate of fair value because the Company’s interest rate is near current market rates for instruments with similar characteristics.  

8

The following tables summarize the Company’s assets that are measured at fair value on a recurring basis and indicates the level of the fair value hierarchy utilized to determine such fair values (in thousands):

	As of December 31, 2020
	TOTAL		Quoted Prices in Active Markets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets:
Cash equivalents	$	70,797	$	68,798	$	1,999	$	—
Total cash equivalents		70,797		68,798		1,999		—
United States Treasury securities		8,213		8,213		—		—
Corporate debt securities		11,973		—		11,973		—
Commercial paper		13,090		—		13,090		—
Investments		33,276		8,213		25,063		—
Total	$	104,073	$	77,011	$	27,062	$	—
	As of June 30, 2021
	TOTAL		Quoted Prices in Active Markets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets:
Cash equivalents	$	73,343	$	71,340	$	2,003	$	-
Total cash equivalents		73,343		71,340		2,003		-
United States Treasury securities		1,850		1,850		-		-
Corporate debt securities		2,007		-		2,007		-
Commercial paper		11,195		-		11,195		-
Investments		15,052		1,850		13,202		-
Total	$	88,395	$	73,190	$	15,205	$	-

8. Term Loan

In May 2017, the Company entered into a loan and security agreement (the “2017 Loan Agreement”), with SLR Investment Corp. (f/k/a Solar Capital Ltd.) and Silicon Valley Bank (together, the “Lenders”), for $10.0 million. The 2017 Loan Agreement had a maturity date of May 1, 2021. Debt issuance costs for the 2017 Loan Agreement were to be amortized to interest expense over the remaining term of the 2017 Loan Agreement using the effective-interest method.

In September 2019, the Company replaced the 2017 Loan Agreement with a new $20.0 million term loan with the Lenders (the “2019 Loan Agreement”). The restructured four-year term loan facility allows for an expansion of the 2017 Loan Agreement. Some of the proceeds from the 2019 Loan Agreement were used to pay off the 2017 Loan Agreement including the final fee of $325,000. The 2019 Loan Agreement extends the term of the credit facility until September 17, 2023. The payoff of the 2017 Loan Agreement was treated as a modification of the debt. Debt issuance costs for the 2019 Loan Agreement, including unamortized issuance costs for the 2017 Loan Agreement, will be amortized to interest expense over the remaining term of the 2019 Loan Agreement using the effective-interest method.

The interest rate under the 2019 Loan Agreement is the higher of (i) LIBOR plus 7.95% or (ii) 10.18% and there is an interest-only period until September 30, 2021. The rate at June 30, 2021 was 10.18%. Pursuant to the 2019 Loan Agreement, the Company provided a first priority security interest in substantially all of the Company’s assets, including intellectual property, subject to certain exceptions.

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The Company entered into an Exit Agreement in connection with the 2019 Loan Agreement which provides for an aggregate payment of 4% of the loan commitment, or $800,000, to the lenders upon the occurrence of an exit event (the “Exit Fee”). The Company concluded that the exit payment obligation met the definition of a derivative that was required to be accounted for as a separate unit of accounting. The Company recorded the issuance-date fair value of the derivative liability of $763,000 as a debt discount and as a derivative liability in the Company’s balance sheet. The derivative liability is re-measured at each balance sheet date and any changes in estimated fair value is recorded as other income (expense). The Company paid the Exit Fee during 2020 in conjunction with the Company’s public offering, which was deemed to be an exit event pursuant to the Exit Agreement. Prior to its public offering in 2020, the Company recorded $30,000 in non-cash expense as a fair value adjustment to the derivative liability.

As of June 30, 2021, unpaid borrowings under the 2019 Loan Agreement totaled $20.0 million. For the three and six months ended June 30, 2021, the Company recorded $95,000 and $182,000, respectively, related to the amortization of debt discount associated with the 2019 Loan Agreement. For the three and six months ended June 30, 2020, the Company recorded $85,000 and $166,000, respectively, related to the amortization of debt discount associated with the 2019 Loan Agreement.

The 2019 Loan Agreement allows the Company to voluntarily prepay all (but not less than all) of the outstanding principal at any time. A prepayment premium of 3% or 1% through the one-year anniversary and the two-year anniversary, respectively, would be assessed on the outstanding principal. After the two-year anniversary, a 0.5% prepayment premium would be assessed on the outstanding principal. A final payment fee of $500,000 is due upon the earlier to occur of the maturity date or prepayment of such borrowings. For the three and six months ended June 30, 2021, the Company recorded $41,000 and $81,000, respectively, related to the amortization of the final payment fee associated with the 2019 Loan Agreement. For the three and six months ended June 30, 2020, the Company recorded $40,000 and $80,000, respectively, related to the amortization of the final payment fee associated with the 2019 Loan Agreement.

In an event of default under the 2019 Loan Agreement, the interest rate will be increased by 5% and the balance under the loan may become immediately due and payable at the option of the lenders.

The 2019 Loan Agreement includes restrictions on, among other things, the Company’s ability to incur additional indebtedness, change the name or location of the Company’s business, merge with or acquire other entities, pay dividends or make other distributions to holders of its capital stock, make certain investments, engage in transactions with affiliates, create liens, sell assets or pay subordinated debt.

Total term loan and unamortized debt discount balances are as follows (in thousands):

	June 30, 2021
Face value	$	20,000
Less: discount		(551	)
Total	$	19,449
Less: current portion		(7,293	)
Total	$	12,156

As of June 30, 2021, future principal payments due under the 2019 Loan Agreement are as follows (in thousands):

Year ended:
December 31, 2021	$	2,500
December 31, 2022		10,000
December 31, 2023		7,500
Total	$	20,000

9. Stockholders’ Equity

2019 At-the-Market Issuance Sales Agreement

On August 23, 2019, the Company entered into an Open Market Sale Agreement^SM (“2019 ATM Agreement”), with Jefferies LLC (“Jefferies”) with respect to an at-the-market offering program (the “2019 ATM Program”) under which the Company could offer and sell shares of its common stock (the “2019 ATM Shares”), having an aggregate offering price of up to $15.0 million through Jefferies as its sales agent. The offering and sale of 2019 ATM Shares were made pursuant to the Company’s shelf registration statement on Form S-3, which was declared effective by the SEC on February 11, 2019 (the “Registration Statement”).

The Company agreed to pay Jefferies a commission equal to 3.0% of the gross sales proceeds of such 2019 ATM Shares. The Company incurred $189,000 of legal, accounting and other costs to establish and activate the 2019 ATM program.

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During 2020, the Company sold a total of 1,502,892 2019 ATM Shares under the 2019 ATM Agreement, in the open market, at a weighted average gross selling price of $7.13 per share for net proceeds of $10.4 million, which completed the program. The Company charged $135,000 in costs related to establishing and activating the program against additional paid in capital upon issuance of shares during 2020.

2021 At-the-Market Issuance Sales Agreement

On March 23, 2021, the Company entered into an Open Market Sale Agreement (the “2021 ATM Agreement”) with Cowen and Company, LLC (“Cowen”) with respect to an at-the-market offering program (the “2021 ATM Program”) under which the Company could offer and sell shares of its common stock (the “2021 ATM Shares”), having an aggregate offering price of up to $50.0 million through Cowen as its sales agent. The Company agreed to pay Cowen a commission up to 3.0% of the gross sales proceeds of such 2021 ATM Shares. As of June 30, 2021, the Company had received no proceeds from the sale of shares of common stock pursuant to the 2021 ATM Agreement.

Sale of Common Stock

In May 2020, the Company completed an underwritten public offering of 5,780,347 shares of its common stock (the “2020 Offering Shares”), pursuant to the Registration Statement. The 2020 Offering Shares were sold at an offering price of $8.65 per share, resulting in net proceeds of $46.6 million, after deducting underwriting discounts, commissions and offering expenses. In addition, the underwriters of the offering were granted the option for a period of 30 days to purchase up to an additional 867,052 shares of common stock at $8.65 per share. In June 2020, the underwriters exercised their option and purchased an additional 440,242 shares of common stock at $8.65 per share, resulting in additional net proceeds to the Company of $3.6 million, after deducting underwriting discounts, commissions and offering expenses.

10.  Stock-Based Compensation

Stock Options

The Company’s 2017 Stock Option and Incentive Plan (the “2017 Stock Plan”) became effective in November 2017, upon the closing of the Company’s initial public offering and will expire in October 2027. Under the 2017 Stock Plan, the Company may grant incentive stock options, non-statutory stock options, restricted stock awards, restricted stock units (“RSUs”) and other stock-based awards. The Company’s 2014 Stock Incentive Plan (the “2014 Stock Plan”) was terminated in November 2017 upon the completion of the Company’s initial public offering and no further options were granted under the 2014 Stock Plan. At June 30, 2021, there were 600,688 options outstanding under the 2014 Stock Plan.  

As of June 30, 2021, there were 5,051,920 shares of the Company’s common stock authorized for issuance under the 2017 Stock Plan, including 359,651 options that have been forfeited from the 2014 Stock Plan.

At June 30, 2021, there were 2,903,186 options available for issuance under the 2017 Stock Plan, 2,076,680 options outstanding and 42,250 RSUs outstanding. Awards granted under the 2017 Stock Plan have a term of ten years. Vesting of awards under the 2017 Stock Plan is determined by the board of directors, but, is generally over one to four-year terms.

The fair value of options at date of grant was estimated using the Black-Scholes option-pricing model with the following assumptions: 

	Six Months Ended June 30,
	2020		2021
Risk-free interest rate	0.41% - 1.71%		0.50% - 0.88%
Expected dividend yield	0%		0%
Expected life	5.5-6.6 years		5.5-6.7 years
Expected volatility	72%-75%		72%-74%
Weighted-average grant date fair value	$	4.06	$	4.26

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The following table summarizes information about stock option activity during the six months ended June 30, 2021 (in thousands, except share and per share data): 

	NUMBER OF SHARES			WEIGHTED- AVERAGE EXERCISE PRICE		WEIGHTED- AVERAGE REMAINING CONTRACTUAL TERM		AGGREGATE INTRINSIC VALUE
Outstanding, December 31, 2020		2,224,913		$	6.26
Granted		899,506			6.70
Exercised		(2,501	)		3.81
Forfeited		(444,550	)		6.58
Outstanding, June 30, 2021		2,677,368		$	6.35		7.97	$	2,023
Vested and exercisable, June 30, 2021		1,206,154		$	5.85		6.52	$	1,722
Vested and expected to vest, June 30, 2021		2,137,511		$	6.28		7.65	$	1,904

Of the options granted during the six months ended June 30, 2021, 112,050 were performance-based options. Vesting of these performance-based options is contingent on the occurrence of certain regulatory and commercial milestones. The Company is recognizing the expense as straight-line over the expected performance achievement term.

The following table summarizes information about RSU activity during the six months ended June 30, 2021:

	RSUs			AVERAGE GRANT DATE FAIR VALUE (IN DOLLARS PER SHARE)
Outstanding, December 31, 2020		80,450		$	3.25
Granted		—			—
Vested		(38,200	)		3.25
Forfeited		—			—
RSUs outstanding at June 30, 2021		42,250		$	3.25

The number of RSUs vested includes shares of common stock withheld on behalf of employees to satisfy the minimum statutory tax withholding requirements.

Unrecognized compensation expense related to unvested options as of June 30, 2021 was $3.5 million and will be recognized over the remaining vesting periods of the underlying awards. The weighted-average period over which such compensation is expected to be recognized is 2.5 years. Unrecognized compensation expense related to unvested RSUs as of June 30, 2021 was $30,000 and will be recognized over the remaining vesting periods of the underlying awards. The weighted-average period over which such compensation is expected to be recognized is 1 year.

The Company recorded stock-based compensation expense in the following expense categories of its accompanying condensed consolidated statements of operations and comprehensive loss for the three and six months ended June 30, 2020 and 2021 (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2020		2021		2020		2021
Research and development	$	177	$	233	$	321	$	459
General and administrative		444		356		808		651
Total	$	621	$	589	$	1,129	$	1,110

11. Commitments and Contingencies

Operating Leases

The Company leases office facilities and equipment under long-term, non-cancelable operating lease agreements. The leases expire at various dates through 2022 and do not include renewal options.

Certain leases provide for increases in future minimum annual rental payments as defined in the lease agreements. The leases generally also include real estate taxes and common area maintenance charges in the annual rental payments.

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Pursuant to the terms of its lease agreement for the Company’s headquarters, the Company obtained a letter of credit in the amount of approximately $182,000 as security on the lease obligation. The letter of credit is listed as restricted cash on the Company’s consolidated balance sheets.

Short-term leases are leases having a term of twelve months or less. The Company recognizes short-term leases on a straight-line basis and does not record a related lease asset or liability for such leases.

The following is a maturity analysis of the annual undiscounted cash flows of the operating lease liabilities as of June 30, 2021 (in thousands):

Year ended:
December 31, 2021	$	265
December 31, 2022		496
Total minimum lease payments		761
Less imputed interest		(47	)
Total	$	714

	Six Months Ended June 30,
	2020			2021
Lease cost:
Operating lease cost	$	243		$	244
Short-term lease cost		-			-
Sublease income		(25	)		(26	)
Total lease cost	$	218		$	218
Other information
Cash paid for amounts included in the measurement of lease liabilities	$	267		$	262
Operating cash flows from operating leases	$	(20	)	$	(28	)
Weighted-average remaining lease term - operating leases	2.4 years			1.4 years
Weighted-average discount rate - operating leases		10.1	%		10.1	%

In February 2018, the Company signed a sublease agreement for its facility located in Lexington, Massachusetts. The lease commenced on April 1, 2018 and has an initial term of three years with an extension term through December 2022. In February 2020, the sublease was extended until December 31, 2022.

Research and Development Agreements

As part of the Company’s research and development efforts, the Company enters into research and development agreements with certain companies. These agreements contain varying terms and provisions which include fees and milestones to be paid by the Company. Some of these agreements also contain provisions which require the Company to make payments for exclusivity in the development of products in the area of loop diuretics.

Contingencies

The Company follows subtopic 450-20 of the FASB Accounting Standards Codification to report accounting for contingencies.

Certain conditions may exist as of the date the financial statements are issued, which may result in a loss to the Company but which will only be resolved when one or more future events occur or fail to occur. The Company assesses such contingent liabilities, and such assessment inherently involves an exercise of judgment.

If the assessment of a contingency indicates that it is probable that a material loss has been incurred and the amount of the liability can be estimated, then the estimated liability would be accrued in the Company’s financial statements. If the assessment indicates that a potential material loss contingency is not probable but is reasonably possible, or is probable but cannot be estimated, then the nature of the contingent liability, and an estimate of the range of possible losses, if determinable and material, would be disclosed. Loss contingencies considered remote are generally not disclosed unless they involve guarantees, in which case the guarantees would be disclosed.

Due to the discontinuation of use of the sc2Wear Infusor, the Company has received notice of termination costs related to the program. The Company has accrued all costs for which it either believes it is contractually liable or for which the Company has negotiated settlement agreements in good faith. However, certain of the Company’s vendors have claimed or billed for additional costs for which the Company believes it is not obligated. At this time, the Company estimates that additional termination costs, if any, will be immaterial to the Company’s financial statements. 

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Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations

The following discussion and analysis of our financial condition and results of operations should be read in conjunction with our financial statements and related notes thereto included elsewhere in this Quarterly Report on Form 10-Q (“Quarterly Report”) and our audited consolidated financial statements included in our Annual Report on Form 10-K for the year ended December 31, 2020 (the “Annual Report”) filed with the Securities and Exchange Commission (the “SEC”) on March 23, 2021. Some of the information contained in this discussion and analysis or set forth elsewhere in this Quarterly Report, including information with respect to our plans and strategy for our business, includes forward looking statements that involve risks and uncertainties. As a result of many factors, including those factors set forth in the “Risk Factors” section in our Annual Report and in this Quarterly Report, our actual results could differ materially from the results described in or implied by, the forward-looking statements contained in the following discussion and analysis.

OVERVIEW

We are a pharmaceutical company focused on developing and commercializing products that have the potential to optimize the delivery of infused therapies, advance patient care and reduce healthcare costs. Our strategy is designed to enable the subcutaneous administration of therapies that have previously been limited to intravenous, or IV, delivery. By moving delivery away from the high-cost healthcare settings typically required for IV administration, we believe our technology has the potential to reduce overall healthcare costs and advances the quality and convenience of care. Our lead product candidate, FUROSCIX, consists of our novel formulation of furosemide delivered via an on-body infusor and is under development for treatment of congestion in patients with heart failure who display reduced responsiveness to oral diuretics and do not require hospitalization.

We resubmitted our new drug application, or NDA, for FUROSCIX, with the U.S. Food and Drug Administration, or FDA, on June 30, 2020. The resubmission was a response to a Complete Response Letter, or CRL, from the FDA with respect to our NDA submitted in August 2017, which indicated that, among other things, certain device modifications to our infusor were required. Based on our interactions with the FDA, which required device modifications necessary to advance FUROSCIX using its then current technology, we decided to transition to our next generation device. The resubmission incorporated our next generation device which is being developed through a partnership with West Pharmaceutical Services, Inc., or West, using its proprietary on-body infusor.

On July 23, 2020, the FDA accepted the resubmission of our NDA and we were given a Prescription Drug User Fee Act, or PDUFA, target action date of December 30, 2020; however, on December 3, 2020, we received a CRL from the FDA, in which, among other things, the FDA raised questions related to testing, labeling and features of the combination product unrelated to the drug constituent. The FDA also indicated that they needed to conduct pre-approval inspections at three of our third-party manufacturing facilities. No clinical deficiencies were noted. On January 28, 2021, we had a Type A meeting with the FDA to discuss the issues described in the CRL and steps required for the resubmission of the NDA for FUROSCIX. On June 2, 2021, we had a Type C meeting with the FDA regarding the requirements for resubmission of the FUROSCIX NDA. Based on guidance we received during the meeting and subsequently contained within the meeting minutes, we are moving forward with plans to conduct required bench testing for the West proprietary on-body infusor. The FDA has not requested modifications to the device and, subject to West’s completion of its portion of the regulatory filing, we are targeting resubmitting our NDA in the fourth quarter of 2021.

In May 2021, we completed enrollment in FREEDOM-HF, a prospective clinical trial evaluating overall and heart failure-related costs for subjects treated with FUROSCIX outside the hospital for 30 days post-discharge from the emergency department compared to patients receiving intravenous furosemide in the hospital setting. Based on the results from a planned, prespecified interim analysis conducted to confirm the final sample size, and following input from statisticians, principal investigators, payer advisors and Health Economics and Outcomes Research (HEOR) experts, enrollment was closed on May 17, 2021, prior to the enrollment target of 34 patients. This decision was made due to the highly statistically significant reduction observed in 30-day heart failure-related costs in patients who received FUROSCIX in the interim analysis. The final analysis included 24 subjects treated with FUROSCIX and 66 matched comparators based on seven variables associated with hospitalization. On July 13, 2021, we announced top-line results from FREEDOM-HF, demonstrating that average 30-day heart failure-related costs were reduced by $17,753 per study subject in the FUROSCIX arm compared to historically matched comparators, with a very high level of statistical significance p<.0001. Since the price for FUROSCIX has not been established, the difference in costs does not include the cost of FUROSCIX. These top-line results support our hypothesis that treating heart failure patients presenting to the emergency department with worsening congestion with FUROSCIX outside of the hospital setting has the potential to dramatically reduce the significant costs associated with hospital admissions and readmissions.

We continued enrollment in AT HOME-HF, a multicenter, randomized, open label, controlled study in heart failure patients with worsening signs and symptoms of congestion requiring augmentation in diuretic therapy outside of an acute care setting. The objective of this pilot study is to evaluate the effectiveness and safety of FUROSCIX versus continued medical therapy to inform a larger, pivotal clinical trial.  

We have funded our operations from inception through June 30, 2021 primarily through the sale of shares of our common stock and, prior to that, through the private placement of our preferred stock and the incurrence of debt. We do not have any products approved for sale and have not generated any revenue from product sales.

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As of June 30, 2021, we had an accumulated deficit of $175.8 million. We expect to continue to incur net losses for the foreseeable future as we develop the infrastructure to commercialize our products, if approved, in the United States, including building our sales and marketing organization, continuing research and development efforts, engaging in scale-up manufacturing and seeking regulatory approval for new product candidates and enhancements. We will need additional funding to pay expenses related to our operating activities, including selling, general and administrative expenses and research and development expenses. Adequate funding may not be available to us on acceptable terms, or at all. Our failure to obtain sufficient funds on acceptable terms when needed could have a material adverse effect on our business, results of operations or financial condition.

IMPACT OF COVID-19

A new strain of novel coronavirus which causes a severe respiratory disease (“COVID-19”) was identified in 2019, and subsequently declared a pandemic by the World Health Organization, affecting the populations of the United States as well as the rest of the world. In response to the pandemic, we transitioned our workforce to work from home in March 2020. In July 2020, we opened our offices for limited access to employees integrating all recommendations for workplace safety, including appropriate protocols to ensure social-distancing. The health of our employees remains a top priority and we are continuing to monitor the impact of COVID-19 including the pace of vaccinations and the emergence of new and more contagious strains of the virus and government regulations.

To date, the third parties that perform our manufacturing, assembly, packaging and testing of our products have generally remained operational. The extent of the impact of the evolving COVID-19 pandemic on the timing of our ability to resubmit the FUROSCIX NDA, the FDA’s subsequent review of the FUROSCIX NDA or possible delays in enrolling patients to our upcoming or recently initiated trials and our operational and financial performance will depend on future developments, including the duration, severity and spread of the pandemic, related restrictions on travel and transportation, the impact of new strains of the virus, the effectiveness and availability of vaccines and other actions that may be taken by governmental authorities, including the ability of the FDA to inspect facilities required for approval of our NDA, the impact to the business of our suppliers or customers, and other items identified under “Risk Factors” in our Annual Report on Form 10-K, all of which are uncertain and cannot be predicted. An extended period of global supply chain and economic disruption could materially affect our business, results of operations, access to sources of liquidity and financial condition.

COMPONENTS OF OUR RESULTS OF OPERATIONS

Research and Development Expenses

Research and development, or R&D, expenses consist of the cost of engineering, clinical trials, regulatory and medical affairs and quality assurance associated with developing our proprietary technology and product candidates. R&D expenses consist primarily of:

• employee-related expenses, including salaries, benefits, travel expense and stock-based compensation expense;

• cost of outside consultants who assist with technology development, regulatory affairs, clinical trials and medical affairs, and quality assurance;

• cost of clinical trial activities performed by third parties;

• cost of pre-approval pharmaceutical batch manufacturing; and

• cost of facilities and supplies used for internal research and development and clinical activities.

We expense R&D costs as incurred. Given the emphasis to date on our lead product candidate FUROSCIX, our R&D expenses have not been allocated on a program-specific basis. In the future, we expect R&D expenses to increase in absolute dollars as we continue to develop new products and enhance existing products and technologies. We anticipate that our expenses will increase significantly as we:

• pursue regulatory approval of FUROSCIX incorporating the West proprietary on-body infusor;

• continue to advance our pipeline programs beyond FUROSCIX;

• continue our current research and development activity;

• seek to identify additional research programs and additional product candidates;

• initiate preclinical testing and clinical trials for any product candidates we identify and develop, maintain, expand and protect our intellectual property portfolio; and

• hire additional research, clinical and scientific personnel.

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General and Administrative Expenses

General and administrative, or G&A, expenses consist of employee-related expenses, including salaries, benefits, travel expense and stock-based compensation expense for personnel in executive, finance, commercial, human resources, facility operations and administrative functions. Other G&A expenses include pre-approval promotional activities, marketing, conferences and trade shows, professional services fees, including legal, audit and tax fees, insurance costs, general corporate expenses and allocated facilities-related expenses.

If we receive FDA approval for FUROSCIX incorporating West’s proprietary on-body infusor, we anticipate that our G&A expenses will increase as we continue to build our corporate and commercial infrastructure to support the development and commercial launch of FUROSCIX in the United States.

Results of Operations                

Comparison of Three Months Ended June 30, 2020 and 2021

The following table summarizes our results of operations for the three months ended June 30, 2020 and 2021 (in thousands):

	Three Months Ended June 30,						Increase
	2020			2021			(Decrease)
Operating expenses:
Research and development	$	5,139		$	3,807		$	(1,332	)
General and administrative		2,537			2,649			112
Total operating expenses		7,676			6,456			(1,220	)
Loss from operations		(7,676	)		(6,456	)		(1,220	)
Other (expense) income		(1	)		33			34
Interest income		21			12			(9	)
Interest expense		(639	)		(651	)		12
Net loss	$	(8,295	)	$	(7,062	)	$	(1,233	)

Research and development expenses. R&D expenses were $3.8 million for the three months ended June 30, 2021, compared to $5.1 million for the three months ended June 30, 2020. The decrease of $1.3 million was primarily attributable to a decrease of $1.7 million in device development costs. The decrease was partially offset by a $0.1 million increase in pharmaceutical development costs, a $0.1 million increase in contract services for medical affairs, and a $0.1 million increase in employee-related costs.

General and administrative expenses. G&A expenses were $2.6 million for the three months ended June 30, 2021, compared to $2.5 million for the three months ended June 30, 2020. The increase of $0.1 million was primarily attributable to a $0.2 million increase in consulting fees and a $0.1 million increase in director and officer’s insurance. The increase was partially offset by a $0.2 million decrease in legal costs.

Other (expense) income. Other income was $33,000 for the three months ended June 30, 2021, compared to other expense of $1,000 for the three months ended June 30, 2020. The increase in income of $34,000 was primarily attributable to income from a rental arrangement.

Interest income. Interest income was $12,000 for the three months ended June 30, 2021, compared to $21,000 for the three months ended June 30, 2020. The decrease of $9,000 was primarily attributable to lower interest rates on our financial instruments.

Interest expense. Interest expense was $0.7 million for the three months ended June 30, 2021 compared to $0.6 million for the three months ended June 30, 2020. Interest expense consists of interest on the $20.0 million term loan with SLR Investment Corp. (f/k/a Solar Capital Ltd.) and Silicon Valley Bank.

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Comparison of Six Months Ended June 30, 2020 and 2021

The following table summarizes our results of operations for the six months ended June 30, 2020 and 2021 (in thousands):

	Six Months Ended June 30,						Increase
	2020			2021			(Decrease)
Operating expenses:
Research and development	$	9,285		$	7,816		$	(1,469	)
General and administrative		5,040			5,381			341
Total operating expenses		14,325			13,197			(1,128	)
Loss from operations		(14,325	)		(13,197	)		(1,128	)
Other (expense) income		(32	)		288			320
Interest income		245			32			(213	)
Interest expense		(1,275	)		(1,287	)		12
Net loss	$	(15,387	)	$	(14,164	)	$	(1,223	)

Research and development expenses. R&D expenses were $7.8 million for the six months ended June 30, 2021, compared to $9.3 million for the six months ended June 30, 2020. The decrease of $1.5 million was primarily attributable to a decrease of $3.3 million in device development costs. The decrease was partially offset by a $0.5 million increase in pharmaceutical development costs, a $0.5 million increase in employee-related costs, a $0.4 million increase in clinical study activity, a $0.3 million increase in contract services for medical affairs, and a $0.1 million increase in quality assurance professional services.

General and administrative expenses. G&A expenses were $5.4 million for the six months ended June 30, 2021, compared to $5.0 million for the six months ended June 30, 2020. The increase of $0.4 million was primarily attributable to a $0.3 million increase in employee-related costs, a $0.3 million increase in director and officer’s insurance, and a $0.2 million increase in consulting fees. The increase was partially offset by a $0.4 million decrease in legal costs.

Other (expense) income. Other income was $0.3 million for the six months ended June 30, 2021, compared to other expense of $32,000 for the six months ended June 30, 2020. The increase in income of $0.3 million was primarily attributable to the recovery of fees associated with a post-employment matter.

Interest income. Interest income was $32,000 for the six months ended June 30, 2021, compared to $0.2 million for the six months ended June 30, 2020. The decrease of $0.2 million was primarily attributable to lower interest rates on our financial instruments.

Interest expense. Interest expense was $1.3 million for the six months ended June 30, 2021 and for the six months ended June 30, 2020. Interest expense consists of interest on the $20.0 million term loan with SLR Investment Corp. (f/k/a Solar Capital Ltd.) and Silicon Valley Bank.

LIQUIDITY AND CAPITAL RESOURCES

Overview

We have funded our operations from inception through June 30, 2021 primarily through the sale of shares of our common stock and, prior to that, through the private placement of our preferred stock and the incurrence of debt. As of June 30, 2021, we had received net cash proceeds of $92.7 million from our initial public offering, $56.7 million from sales of our preferred stock, $18.8 million from borrowings under our term loan, $13.5 million from sales of convertible notes, $50.2 million from our public offering in 2020 and $14.4 million from the sale of common stock in our 2019 at-the-market offering. As of June 30, 2021, we had cash, cash equivalents and restricted cash of $75.2 million and short-term investments of $15.0 million.

On March 23, 2021, we entered into the 2021 ATM Agreement with Cowen to sell shares of our common stock, from time to time, with aggregate gross sales proceeds of up to $50.0 million, through an at-the-market equity offering program under which Cowen will act as our sales agent. As of June 30, 2021, we had received no proceeds from the sale of shares of common stock pursuant to the 2021 ATM Agreement.

We expect to incur substantial additional expenditures in the near future to support our ongoing activities and our plans to obtain regulatory approval for FUROSCIX incorporating West’s proprietary on-body infusor. We believe our existing unrestricted cash is sufficient to fund our operations through at least the next 12 months from the date of this quarterly report. We expect our costs and expenses to increase in the future as we prepare for and, if approved, commence U.S. commercialization of FUROSCIX, including the development of a direct sales force, and as we continue to make substantial expenditures on research and development, including to increase our manufacturing capacity and for conducting clinical trials of our product candidates. Additionally, we will incur additional costs as a result of operating as a public company. Our future capital requirements will depend on many factors, including:

• the time and expense required to resubmit the NDA for FUROSCIX;

• the potential FDA approval of FUROSCIX;

17

• the costs and expenses of establishing our U.S. sales and marketing infrastructure;

• the degree of success we experience in commercializing FUROSCIX, if approved;

• the revenue generated by sales of FUROSCIX, if approved, and other products that may be approved;

• the pricing and reimbursement of FUROSCIX, if approved, and of other product candidates that may be approved;

• the costs, timing and outcomes of clinical trials and regulatory reviews associated with our product candidates;

• the emergence of competing or complementary technological developments;

• the extent to which FUROSCIX, if approved, is adopted by the healthcare community;

• the number and types of future products we develop and commercialize;

• the costs of preparing, filing and prosecuting patent applications and maintaining, enforcing and defending intellectual property-related claims;

• the impact of COVID-19 on our operations; and

• the extent and scope of our general and administrative expenses.

Additional financing may not be available on a timely basis on terms acceptable to us, or at all. We may raise funds in equity, royalty-based or debt financings or enter into additional credit facilities in order to access funds for our capital needs. If we raise additional funds through further issuances of equity or convertible debt securities, our existing stockholders could suffer significant dilution in their percentage ownership of our company, and any new equity securities we issue could have rights, preferences and privileges senior to those of holders of our common stock. If we raise additional funds through royalty-based financing arrangements, we will likely agree to relinquish rights to potentially valuable future revenue streams and may agree to covenants that restrict our operations or strategic flexibility. Any debt financing obtained by us in the future would cause us to incur additional debt service expenses and could include restrictive covenants relating to our capital raising activities and other financial and operational matters, which may make it more difficult for us to obtain additional capital and pursue business opportunities. If we are unable to obtain adequate financing or financing on terms satisfactory to us when we require it, we may terminate or delay the development of one or more of our products, delay clinical trials necessary to market our products, or delay establishment or expansion of sales and marketing capabilities or other activities necessary to commercialize our products.

CASH FLOWS

The following table summarizes our sources and uses of cash for each of the periods presented:

	Six Months Ended June 30,
(in thousands)	2020			2021
Net cash (used in) provided by:
Operating activities	$	(13,705	)	$	(14,886	)
Investing activities		(40,469	)		18,108
Financing activities		60,410			(72	)
Net increase in cash, cash equivalents and restricted cash	$	6,236		$	3,150

Net Cash Used in Operating Activities

During the six months ended June 30, 2021, net cash used in operating activities was $14.9 million, consisting primarily of a net loss of $14.2 million and an increase in net operating assets of $2.4 million. This was offset by non-cash charges of $1.7 million, which primarily consisted of depreciation, amortization related to our right of use leased assets, stock-based compensation expense, non-cash interest expense related to amortization of debt discount associated with the 2019 Loan Agreement and accretion of discount on investments. The increase in net operating assets is related to accrued expenses for employee-related and device development costs.

18

During the six months ended June 30, 2020, net cash used in operating activities was $13.7 million, consisting primarily of a net loss of $15.4 million. This was offset by non-cash charges of $1.6 million and an increase in net operating liabilities of $0.1 million. The non-cash charges primarily consisted of depreciation, amortization related to our right of use leased assets, stock-based compensation expense, non-cash interest expense related to amortization of debt discount associated with the 2019 Loan Agreement and the fair value adjustment to the derivative liability.

Net Cash (Used in) Provided by Investing Activities

During the six months ended June 30, 2021, net cash provided by investing activities was $18.1 million, consisting of maturities and purchases of short-term investments.

During the six months ended June 30, 2020, net cash used in investing activities was $40.5 million, consisting of purchases of short-term investments.

Net Cash Provided by (Used in) Financing Activities

During the six months ended June 30, 2021, net cash used in financing activities was $72,000, consisting primarily of tax obligations on the settlement of restricted stock units, offset by stock option exercises.

During the six months ended June 30, 2020, net cash provided by financing activities was $60.4 million, consisting primarily of net proceeds of $50.2 million from the public offering, net proceeds of $10.4 million from the 2019 at-the-market offering and stock option exercises. The proceeds were offset by the $0.8 million Exit Fee associated with the 2019 Loan Agreement and tax obligations on the settlement of restricted stock units.

OFF-BALANCE SHEET ARRANGEMENTS

We currently have no off-balance sheet arrangements.

CONTRACTUAL OBLIGATIONS

There were no material changes in our commitments under contractual obligations, as disclosed in “Management’s Discussion and Analysis of Financial Condition and Results of Operations” contained in our Annual Report on Form 10-K for the fiscal year ended December 31, 2020, filed with the SEC on March 23, 2021.

CRITICAL ACCOUNTING POLICIES AND ESTIMATES

Management’s discussion and analysis of our financial condition and results of operations is based on our financial statements, which have been prepared in accordance with U.S. generally accepted accounting principles, or U.S. GAAP. The preparation of these financial statements requires us to make estimates and assumptions for the reported amounts of assets, liabilities, revenue, expenses and related disclosures. Our estimates are based on our historical experience and on various other factors that we believe are reasonable under the circumstances, the results of which form the basis for making judgments about the carrying value of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates under different assumptions or conditions and any such differences may be material. Our critical accounting policies are more fully described under the heading “Management’s Discussion and Analysis of Financial Condition and Results of Operations – Critical Accounting Policies and Estimates” in our Annual Report on Form 10-K for the fiscal year ended December 31, 2020, filed with the SEC on March 23, 2021.

JOBS ACT ACCOUNTING ELECTION

In April 2012, the Jumpstart Our Business Startups Act of 2012, or JOBS Act, was enacted. Section 107 of the JOBS Act provides that an emerging growth company can take advantage of an extended transition period for complying with new or revised accounting standards. Thus, an emerging growth company can delay the adoption of certain accounting standards until those standards would otherwise apply to private companies. We have elected not to avail ourselves of this extended transition period and, as a result, we adopt new or revised accounting standards on the relevant dates on which adoption of such standards is required for other public companies. This election is irrevocable.

Item 3. Quantitative and Qualitative Disclosures About Market Risk.

We are exposed to market risks related to changes in foreign currency exchange rates and interest rates.

We contract with vendors in foreign countries. As such, we have exposure to adverse changes in exchange rates of foreign currencies, principally the Swiss franc and the Euro, associated with our foreign transactions. We believe this exposure to be immaterial. We currently do not hedge against this exposure to fluctuations in exchange rates.

19

Our exposure to market risk also relates to interest rate sensitivity, which is affected by changes in the general level of U.S. interest rates. As of June 30, 2021, our aggregate outstanding indebtedness was $20.0 million, which bears interest at the rate at the higher of (i) LIBOR plus 7.95% or (ii) 10.18%. Due to the short-term duration and variable rate of our indebtedness, an immediate 100 basis point change in interest rates would not have a material effect on the fair market value of our debt instruments.

Item 4. Controls and Procedures.

Our management, with the participation of our principal executive officer and principal financial officer, evaluated, as of the end of the period covered by this Quarterly Report on Form 10-Q, the effectiveness of our disclosure controls and procedures. Based on that evaluation of our disclosure controls and procedures as of June 30, 2021, our principal executive officer and principal financial officer concluded that our disclosure controls and procedures as of such date are effective at the reasonable assurance level. The term “disclosure controls and procedures,” as defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act, means controls and other procedures of a company that are designed to ensure that information required to be disclosed by the company in the reports that it files or submits under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in the SEC’s rules and forms. Disclosure controls and procedures include, without limitation, controls and procedures designed to ensure that information required to be disclosed by us in the reports we file or submit under the Exchange Act is accumulated and communicated to our management, including our principal executive officer and principal financial and accounting officer, as appropriate to allow timely decisions regarding required disclosure. Management recognizes that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving their objectives and our management necessarily applies its judgment in evaluating the cost-benefit relationship of possible controls and procedures.

There were no changes in our internal control over financial reporting during the six months ended June 30, 2021 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

20

PART II — OTHER INFORMATION

Item 1. Legal Proceedings

From time to time, we may be subject to legal proceedings and claims in the ordinary course of business. We are not currently aware of any such proceedings or claims that we believe will have, individually or in the aggregate, a material adverse effect on our business, financial condition or results of operations.

Item 1A. Risk Factors

Investing in our common stock involves a high degree of risk. Information regarding risk factors appears in Item 1A of our Annual Report on Form 10-K for the year ended December 31, 2020, which was filed with the SEC on March 23, 2021. There have been no material changes from the risk factors previously disclosed in that Annual Report on Form 10-K.

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds

None.

Item 3. Defaults Upon Senior Securities

None.

Item 4. Mine Safety Disclosures

Not applicable.

Item 5. Other Information

None.

Item 6. Exhibits

21

EXHIBIT INDEX

Exhibit Number	Description
31.1*	Certification of Principal Executive Officer and Principal Financial Officer Pursuant to Rules 13a-14(a) and 15d-14(a) under the Securities Exchange Act of 1934, as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
32.1†	Certification of Principal Executive Officer and Principal Financial Officer Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
101.INS*	Inline XBRL Instance Document – the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document
101.SCH*	Inline XBRL Taxonomy Extension Schema Document
101.CAL*	Inline XBRL Taxonomy Extension Calculation Linkbase Document
101.DEF*	Inline XBRL Taxonomy Extension Definition Linkbase Document
101.LAB*	Inline XBRL Taxonomy Extension Label Linkbase Document
101.PRE*	Inline XBRL Taxonomy Extension Presentation Linkbase Document
104*	Cover Page Interactive Data File (formatted as inline XBRL with applicable taxonomy extension information contained in Exhibits 101.*)

* Filed herewith.

† This certification will not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liability of that section. Such certification will not be deemed to be incorporated by reference into any filing under the Securities Act of 1933, as amended, or the Securities Exchange Act, except to the extent specifically incorporated by reference into such filing.

22

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

	SCPHARMACEUTICALS INC.
Date: August 11, 2021	By:	/s/ John H. Tucker
		John H. Tucker
		President and Chief Executive Officer (Principal Executive Officer and Principal Financial Officer)

23

EX-31.1

Exhibit 31.1

Certification

I, John H. Tucker, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q for the period ended June 30, 2021 of SCPHARMACEUTICALS INC.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. I am responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a. Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b. Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c. Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d. Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a. All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b. Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: August 11, 2021	/s/ John H. Tucker
	John H. Tucker
	President and Chief Executive Officer
	(Principal Executive Officer and Principal Financial Officer)

EX-32.1

Exhibit 32.1

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the quarterly report on Form 10-Q of scPharmaceuticals Inc. (the “Company”) for the period ended June 30, 2021, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, John H. Tucker, President and Chief Executive Officer (Principal Executive Officer and Principal Financial Officer) hereby certify, pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, 18 U.S.C. Section 1350, that to my knowledge:

1) the Report which this statement accompanies fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

2) the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: August 11, 2021	/s/ John H. Tucker
	John H. Tucker
	President and Chief Executive Officer
	(Principal Executive Officer and Principal Financial Officer)

XML

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2021	Aug. 10, 2021
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2021
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q2
Trading Symbol	SCPH
Entity Registrant Name	SCPHARMACEUTICALS INC.
Entity Central Index Key	0001604950
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Entity Current Reporting Status	Yes
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Ex Transition Period	true
Entity Shell Company	false
Entity Interactive Data Current	Yes
Title of 12(b) Security	Common stock, par value $0.0001
Security Exchange Name	NASDAQ
Entity File Number	001-38293
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	46-5184075
Entity Address, Address Line One	2400 District Avenue
Entity Address, Address Line Two	Suite 310
Entity Address, City or Town	Burlington
Entity Address, State or Province	MA
Entity Address, Postal Zip Code	01803
City Area Code	617
Local Phone Number	517-0730
Document Quarterly Report	true
Document Transition Report	false
Entity Common Stock, Shares Outstanding		27,355,454

XML

CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Current assets
Cash and cash equivalents	$ 74,969	$ 71,819
Short-term investments	15,052	33,276
Prepaid expenses	2,396	2,610
Other current assets	75	121
Total current assets	92,492	107,826
Restricted cash	182	182
Property and equipment, net	77	93
Right-of-use lease assets - operating, net	616	815
Deposits and other assets	248	132
Total assets	93,615	109,048
Current liabilities
Accounts payable	531	1,666
Accrued expenses	3,579	4,787
Term loan, short-term	7,293	2,408
Lease obligation - operating, short-term	485	460
Total current liabilities	11,888	9,321
Term loan, long-term	12,156	16,858
Lease obligation - operating, long-term	229	480
Other liabilities	299	219
Total liabilities	24,572	26,878
Commitments and contingencies (Note 11)
Stockholders’ equity
Preferred stock, $0.0001 par value; 10,000,000 shares authorized and no shares issued and outstanding
Common stock, $0.0001 par value; 150,000,000 shares authorized as of June 30, 2021; 27,325,959 and 27,355,454 shares issued and outstanding as of December 31, 2020 and June 30, 2021, respectively	3	3
Additional paid-in capital	244,868	243,830
Accumulated deficit	(175,828)	(161,664)
Accumulated other comprehensive gain		1
Total stockholders’ equity	69,043	82,170
Total liabilities and stockholders’ equity	$ 93,615	$ 109,048

XML

CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) - $ / shares	Jun. 30, 2021	Dec. 31, 2020
Statement Of Financial Position [Abstract]
Preferred stock, par value	$ 0.0001	$ 0.0001
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.0001
Common stock, shares authorized	150,000,000
Common stock, shares issued	27,355,454	27,325,959
Common stock, shares outstanding	27,355,454	27,325,959

XML

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Operating expenses:
Research and development	$ 3,807	$ 5,139	$ 7,816	$ 9,285
General and administrative	2,649	2,537	5,381	5,040
Total operating expenses	6,456	7,676	13,197	14,325
Loss from operations	(6,456)	(7,676)	(13,197)	(14,325)
Other (expense) income	33	(1)	288	(32)
Interest income	12	21	32	245
Interest expense	(651)	(639)	(1,287)	(1,275)
Net loss	$ (7,062)	$ (8,295)	$ (14,164)	$ (15,387)
Net loss per share — basic and diluted	$ (0.26)	$ (0.36)	$ (0.52)	$ (0.71)
Weighted average common shares outstanding — basic and diluted	27,355,454	23,355,418	27,346,141	21,786,946
Other comprehensive loss:
Unrealized gain (loss) on short-term investments	$ 1		$ (1)
Comprehensive loss	$ (7,061)	$ (8,295)	$ (14,165)	$ (15,387)

XML

CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Unaudited) - USD ($) $ in Thousands	Total	At The Market Offering	Common Stock	Common Stock At The Market Offering	Additional Paid-in Capital	Additional Paid-in Capital At The Market Offering	Accumulated Deficit	Other Comprehensive Income
Beginning Balance at Dec. 31, 2019	$ 51,365		$ 2		$ 180,818		$ (129,455)
Beginning Balance, Shares at Dec. 31, 2019			19,418,955
Net loss	(7,092)						(7,092)
Issuance of common stock, net of commissions and issuance costs		$ 10,253				$ 10,253
Issuance of common stock net of commissions and issuance costs, Shares				1,502,892
Issuance of common stock upon exercise of stock options	154				154
Issuance of common stock upon exercise of stock options, Shares			30,143
Vesting of restricted stock	(84)				(84)
Vesting of restricted stock, Shares			29,890
Stock-based compensation	508				508
Ending Balance at Mar. 31, 2020	55,104		$ 2		191,649		(136,547)
Ending Balance, Shares at Mar. 31, 2020			20,981,880
Beginning Balance at Dec. 31, 2019	51,365		$ 2		180,818		(129,455)
Beginning Balance, Shares at Dec. 31, 2019			19,418,955
Net loss	(15,387)
Ending Balance at Jun. 30, 2020	98,059		$ 3		242,898		(144,842)
Ending Balance, Shares at Jun. 30, 2020			27,287,997
Beginning Balance at Dec. 31, 2019	51,365		$ 2		180,818		(129,455)
Beginning Balance, Shares at Dec. 31, 2019			19,418,955
Ending Balance at Dec. 31, 2020	82,170		$ 3		243,830		(161,664)	$ 1
Ending Balance, Shares at Dec. 31, 2020			27,325,959
Beginning Balance at Mar. 31, 2020	55,104		$ 2		191,649		(136,547)
Beginning Balance, Shares at Mar. 31, 2020			20,981,880
Net loss	(8,295)						(8,295)
Common stock offering, net of commissions and issuance costs	50,148		$ 1		50,147
Common stock offering, net of commissions and issuance costs, Shares			6,220,589
Issuance of common stock upon exercise of stock options	561				561
Issuance of common stock upon exercise of stock options, Shares			85,528
Vesting of restricted stock	(80)				(80)
Stock-based compensation	621				621
Ending Balance at Jun. 30, 2020	98,059		$ 3		242,898		(144,842)
Ending Balance, Shares at Jun. 30, 2020			27,287,997
Beginning Balance at Dec. 31, 2020	82,170		$ 3		243,830		(161,664)	1
Beginning Balance, Shares at Dec. 31, 2020			27,325,959
Net loss	(7,102)						(7,102)
Issuance of common stock upon exercise of stock options	9				9
Issuance of common stock upon exercise of stock options, Shares			2,500
Vesting of restricted stock	(81)				(81)
Vesting of restricted stock, Shares			26,994
Stock-based compensation	521				521
Unrealized (loss) gain on short-term investments	(2)							(2)
Ending Balance at Mar. 31, 2021	75,515		$ 3		244,279		(168,766)	(1)
Ending Balance, Shares at Mar. 31, 2021			27,355,453
Beginning Balance at Dec. 31, 2020	82,170		$ 3		243,830		(161,664)	1
Beginning Balance, Shares at Dec. 31, 2020			27,325,959
Net loss	$ (14,164)
Issuance of common stock upon exercise of stock options, Shares	2,501
Unrealized (loss) gain on short-term investments	$ (1)
Ending Balance at Jun. 30, 2021	69,043		$ 3		244,868		(175,828)
Ending Balance, Shares at Jun. 30, 2021			27,355,454
Beginning Balance at Mar. 31, 2021	75,515		$ 3		244,279		(168,766)	(1)
Beginning Balance, Shares at Mar. 31, 2021			27,355,453
Net loss	(7,062)						(7,062)
Issuance of common stock upon exercise of stock options, Shares			1
Stock-based compensation	589				589
Unrealized (loss) gain on short-term investments	1							$ 1
Ending Balance at Jun. 30, 2021	$ 69,043		$ 3		$ 244,868		$ (175,828)
Ending Balance, Shares at Jun. 30, 2021			27,355,454

XML

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($)	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Cash flows from operating activities
Net loss	$ (14,164,000)	$ (15,387,000)
Adjustments to reconcile net loss to cash used in operating activities
Depreciation expense	16,000	17,000
Amortization expense - right-of-use leased assets - operating	199,000	177,000
Accretion of discount on investments	115,000	(1,000)
Stock-based compensation	1,110,000	1,129,000
Non-cash interest expense	263,000	246,000
Fair value adjustment to derivative liability		30,000
Changes in operating assets and liabilities
Prepaid expenses and other assets	143,000	(259,000)
Accounts payable, accrued expenses and other liabilities	(2,568,000)	343,000
Net cash used in operating activities	(14,886,000)	(13,705,000)
Cash flows from investing activities
Maturities of short-term investments	26,100,000
Purchases of short-term investments	(7,992,000)	(40,469,000)
Net cash (used in) provided by investing activities	18,108,000	(40,469,000)
Cash flows from financing activities
Proceeds from common stock offering, net		50,191,000
Proceeds from at-the-market offering, net		10,388,000
Proceeds from the exercise of vested stock options	9,000	715,000
Payment of term loan exit fee		(800,000)
Settlements of restricted stock units for tax withholding obligations	(81,000)	(84,000)
Net cash provided by (used in) financing activities	(72,000)	60,410,000
Net increase in cash, cash equivalents and restricted cash	3,150,000	6,236,000
Cash, cash equivalents and restricted cash at beginning of period	72,001,000	72,806,000
Cash, cash equivalents and restricted cash at end of period	75,151,000	79,042,000
Supplemental cash flow information
Interest paid	1,114,000	1,436,000
Taxes paid	$ 125,000	144,000
Supplemental non-cash information
Transfer of issuance costs from other noncurrent assets to equity		$ 135,000

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Description of Business and Basis of Presentation

6 Months Ended

Jun. 30, 2021

Organization Consolidation And Presentation Of Financial Statements [Abstract]

Description of Business and Basis of Presentation

1. Description of Business and Basis of Presentation

Description of Business

scPharmaceuticals LLC was formed as a limited liability company under the laws of the State of Delaware on February 19, 2013. On March 24, 2014, scPharmaceuticals LLC was converted to a Delaware corporation and changed its name to scPharmaceuticals Inc. (“the Company”). The Company is a pharmaceutical company focused on developing and commercializing products that have the potential to optimize the delivery of infused therapies, advance patient care and reduce healthcare costs. The Company’s strategy is designed to enable the subcutaneous administration of therapies that have previously been limited to intravenous (“IV”) delivery. The Company’s headquarters and primary place of business is Burlington, Massachusetts.

Basis of Presentation

The accompanying condensed consolidated financial statements have been prepared in conformity with accounting principles generally accepted in the United States (“U.S. GAAP”) for interim financial information and have been prepared on a basis which assumes that the Company will continue as a going concern, which contemplates the realization of assets and the satisfaction of liabilities and commitments in the normal course of business. The condensed consolidated financial statements reflect the operations of the Company and its wholly-owned subsidiary, scPharmaceuticals Securities Corporation. Certain information and disclosures normally included in financial statements in accordance with U.S. GAAP have been condensed or omitted. Accordingly, these condensed consolidated financial statements should be read in conjunction with the Company’s audited financial statements and related notes for the year ended December 31, 2020 included in the Company’s Annual Report on Form 10-K filed with the Securities and Exchange Commission (the “SEC”) on March 23, 2021. The Company has determined that it operates in one segment.

The accompanying condensed consolidated balance sheet as of June 30, 2021, the condensed consolidated statements of operations and comprehensive loss and stockholders’ equity for the three and six months ended June 30, 2020 and 2021 and condensed consolidated statements of cash flows for the six months ended June 30, 2020 and 2021 are unaudited. The unaudited condensed consolidated financial statements have been prepared on a basis consistent with that used to prepare the Company’s audited annual financial statements and include, in the opinion of management, adjustments, consisting of normal recurring items, necessary for the fair statement of the condensed consolidated financial statements. The operating results for the three and six months ended June 30, 2021 are not necessarily indicative of the results expected for the full year ending December 31, 2021.

Liquidity

As of June 30, 2021, the Company had an accumulated deficit of approximately $175.8 million. Management expects to continue to incur operating losses for the foreseeable future. The Company has financed its operations to date from proceeds from the sale of common stock, preferred stock and the incurrence of debt.

As of June 30, 2021, the Company had cash, cash equivalents, restricted cash, and short-term investments of $90.2 million. The Company believes that its existing cash, cash equivalents, restricted cash and short-term investments will be sufficient to meet its cash commitments for at least the next 12 months after the date that the interim condensed consolidated financial statements are issued. 

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Significant Accounting Policies

6 Months Ended

Jun. 30, 2021

Accounting Policies [Abstract]

Significant Accounting Policies

2. Significant Accounting Policies

Use of Estimates

The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of expenses during the reported periods. Actual results could differ from those estimates.

Cash, Cash Equivalents and Restricted Cash

Cash, cash equivalents and restricted cash consists of bank deposits and money market accounts with financial institutions. Cash equivalents are carried at cost which approximates fair value due to their short-term nature and which the Company believes do not have a material exposure to credit risk. The Company considers all highly liquid investments with maturities of three months or less from the date of purchase to be cash equivalents. The Company’s cash and cash equivalent accounts, at times, may exceed federally insured limits. The Company has not experienced any losses in such accounts.

As of June 30, 2021, the Company classified $182,000 as restricted cash related to a letter of credit issued as a security deposit in connection with the Company’s lease of its corporate office facilities (Note 11). Cash, cash equivalents and restricted cash consists of the following (in thousands):

	December 31, 2020		June 30, 2021
Cash and cash equivalents	$	71,819	$	74,969
Restricted cash		182		182
Cash, cash equivalents and restricted cash	$	72,001	$	75,151

Concentration of Credit Risk

Financial instruments that subject the Company to credit risk primarily consist of cash and cash equivalents and short-term investments. The Company maintains its cash and cash equivalent balances with high-quality financial institutions and, consequently, the Company believes that such funds are subject to minimal credit risk. The Company’s short-term investments consist of United States Treasury securities, corporate debt securities and commercial paper. The Company has adopted an investment policy that limits the amounts the Company may invest in any one type of investment and requires all investments held by the Company to hold a minimum rating, thereby reducing credit risk exposure.

Investments

The Company invests excess cash balances in available-for-sale debt securities. The Company determines the appropriate classification of these securities at the time they are acquired and evaluates the appropriateness of such classifications at each balance sheet date. The Company reports available-for-sale investments at fair value at each balance sheet date and includes any unrealized gains and losses in accumulated other comprehensive income (loss), a component of stockholders’ equity. Realized gains and losses are determined using the specific identification method and are included in other income (expense). If any adjustment to fair value reflects a decline in the value of the investment, the Company considers all available evidence to evaluate the extent to which the decline is “other than temporary,” including the intention to sell and, if so, marks the investment to market through a charge to the Company’s consolidated statements of operations and comprehensive loss.

Leases

The Company determines if an arrangement is a lease at inception. Operating leases are included in right-of-use (“ROU”) lease assets, current portion of lease obligations, and long-term lease obligations on the Company’s balance sheets.  

ROU lease assets represent the Company’s right to use an underlying asset for the lease term and lease obligations represent the Company’s obligation to make lease payments arising from the lease. Operating ROU lease assets and obligations are recognized at the commencement date based on the present value of lease payments over the lease term. As most of the Company’s leases do not provide an implicit rate, the Company uses its incremental borrowing rate based on the information available at the commencement date in determining the present value of lease payments. The ROU lease asset excludes lease incentives. The Company’s lease terms may include options to extend or terminate the lease when it is reasonably certain that the Company will exercise that option. Lease expense for lease payments is recognized on a straight-line basis over the lease term.

Income Taxes

The Company accounts for income taxes in accordance with the Financial Accounting Standards Board’s (“FASB”) Accounting Standards Codification (“ASC”) 740, Income Taxes. Deferred tax assets and liabilities are recorded to reflect the impact of temporary differences between amounts of assets and liabilities for financial reporting purposes and such amounts as measured under enacted tax laws. A valuation allowance is required to offset any net deferred tax assets if, based upon the available evidence, it is more likely than not that some or all of the deferred tax asset will not be realized.

The Company provides reserves for potential payments of tax to various tax authorities related to uncertain tax positions. The tax benefits recorded are based on a determination of whether and how much of a tax benefit taken by the Company in its tax filings or positions is “more likely than not” to be realized following resolution of any uncertainty related to the tax benefit, assuming that the matter in question will be raised by the tax authorities. Potential interest and penalties associated with such uncertain tax positions are recorded as a component of income tax expense. At June 30, 2021, the Company had no such accruals.

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Net Loss per Share

6 Months Ended

Jun. 30, 2021

Earnings Per Share [Abstract]

Net Loss per Share

3. Net Loss per Share

Net Loss per Share Attributable to Common Stockholders

The following table sets forth the computation of basic and diluted net loss per share of common stock (in thousands, except share and per share data):

	Three Months Ended June 30,						Six Months Ended June 30,
	2020			2021			2020			2021
Net loss	$	(8,295	)	$	(7,062	)	$	(15,387	)	$	(14,164	)
Weighted-average shares used in computing net loss per share		23,355,418			27,355,454			21,786,946			27,346,141
Net loss per share, basic and diluted	$	(0.36	)	$	(0.26	)	$	(0.71	)	$	(0.52	)

The Company’s potentially dilutive securities, which include stock options and unvested restricted stock units, have been excluded from the computation of diluted net loss per share as the effect would be to reduce the net loss per share. Therefore, the weighted average number of common shares outstanding used to calculate both basic and diluted net loss per share attributable to common stockholders is the same. The Company excluded the following potential common shares, presented based on amounts outstanding at each period end, from the computation of diluted net loss per share attributable to common stockholders for the periods indicated because including them would have had an anti-dilutive effect.

	Three Months Ended June 30,				Six Months Ended June 30,
	2020		2021		2020		2021
Stock options to purchase common stock		2,029,843		2,677,368		2,029,843		2,677,368
Unvested restricted stock units		80,450		42,250		80,450		42,250
Total		2,110,293		2,719,618		2,110,293		2,719,618

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Investments

6 Months Ended

Jun. 30, 2021

Investments Debt And Equity Securities [Abstract]

Investments

4. Investments

Cash in excess of the Company’s immediate requirements is invested in accordance with the Company’s investment policy that primarily seeks to maintain adequate liquidity and preserve capital.

A summary of the Company’s available-for-sale classified investments as of June 30, 2021 consisted of the following (in thousands):

	At June 30, 2021
Investments - Current:	Cost Basis		Accumulated Unrealized Gains		Accumulated Unrealized Losses		Fair Value
United States Treasury securities	$	1,850	$	-	$	-	$	1,850
Corporate debt securities		2,007		-		-		2,007
Commercial paper		11,195		-		-		11,195
Total	$	15,052	$	-	$	-	$	15,052

The amortized cost and fair value of the Company’s available-for-sale investments, by contract maturity, as of June 30, 2021 consisted of the following (in thousands):

	Amortized Cost		Fair Value
Due in one year or less	$	15,052	$	15,052
Total	$	15,052	$	15,052

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Property and Equipment

6 Months Ended

Jun. 30, 2021

Property Plant And Equipment [Abstract]

Property and Equipment

5. Property and Equipment

Purchased property and equipment consist of the following (dollars in thousands):

	ESTIMATED USEFUL LIFE	December 31, 2020			June 30, 2021
Office equipment	5 years	$	10		$	10
Office furniture	7 years		116			116
Computer equipment	3 years		8			8
Leasehold improvements	Life of lease		95			95
			229			229
Less: Accumulated depreciation			(136	)		(152	)
Property and equipment, net		$	93		$	77

Depreciation expense for the three months ended June 30, 2020 and June 30, 2021 was $9,000 and $8,000, respectively.

Depreciation expense for the six months ended June 30, 2020 and June 30, 2021 was $17,000 and $16,000, respectively.

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Accrued Expenses

6 Months Ended

Jun. 30, 2021

Accrued Liabilities Current [Abstract]

Accrued Expenses

6. Accrued Expenses

Accrued expenses consist of the following (in thousands):

	December 31, 2020		June 30, 2021
Contract research and development	$	2,274	$	2,069
Employee compensation and related costs		1,978		1,000
Consulting and professional service fees		364		297
Interest		88		85
Financing related costs		43		69
Deposit liability		-		40
State taxes		40		19
Total accrued expenses	$	4,787	$	3,579

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Fair Value of Financial Instruments

6 Months Ended

Jun. 30, 2021

Fair Value Disclosures [Abstract]

Fair Value of Financial Instruments

7. Fair Value of Financial Instruments

The FASB ASC Topic, Fair Value Measurements and Disclosures (“ASC 820”), provides a fair value hierarchy, which classifies fair value measurements based on the inputs used in measuring fair value. Observable inputs are inputs that market participants would use in pricing the asset or liability based on market data obtained from sources independent of the Company. Unobservable inputs are inputs that reflect the Company’s assumptions about the inputs that market participants would use in pricing the asset or liability, and are developed based on the best information available in the circumstances. The fair value hierarchy applies only to the valuation inputs used in determining the reported fair value of the investments and is not a measure of the investment credit quality. The three levels of the fair value hierarchy are described below:

Level 1—Valuations based on unadjusted quoted prices in active markets for identical assets or liabilities that the Company has the ability to access at the measurement date.

Level 2—Valuations based on quoted prices for similar assets or liabilities in markets that are not active or for which all significant inputs are observable, either directly or indirectly.

Level 3—Valuations that require inputs that reflect the Company’s own assumptions that are both significant to the fair value measurement and observable.

To the extent that valuation is based on models or inputs that are less observable or unobservable in the market, the determination of fair value requires more judgment. Accordingly, the degree of judgment exercised by the Company in determining fair value is greatest for instruments categorized in Level 3. A financial instrument’s level within the fair value hierarchy is based on the lowest level of any input that is significant to the fair value measurement.

The carrying values of the Company’s cash and restricted cash, prepaid expenses and deposits approximate their fair values due to their short-term nature. The carrying value of the Company’s loan payable was considered a reasonable estimate of fair value because the Company’s interest rate is near current market rates for instruments with similar characteristics.  

The following tables summarize the Company’s assets that are measured at fair value on a recurring basis and indicates the level of the fair value hierarchy utilized to determine such fair values (in thousands):

	As of December 31, 2020
	TOTAL		Quoted Prices in Active Markets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets:
Cash equivalents	$	70,797	$	68,798	$	1,999	$	—
Total cash equivalents		70,797		68,798		1,999		—
United States Treasury securities		8,213		8,213		—		—
Corporate debt securities		11,973		—		11,973		—
Commercial paper		13,090		—		13,090		—
Investments		33,276		8,213		25,063		—
Total	$	104,073	$	77,011	$	27,062	$	—
	As of June 30, 2021
	TOTAL		Quoted Prices in Active Markets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets:
Cash equivalents	$	73,343	$	71,340	$	2,003	$	-
Total cash equivalents		73,343		71,340		2,003		-
United States Treasury securities		1,850		1,850		-		-
Corporate debt securities		2,007		-		2,007		-
Commercial paper		11,195		-		11,195		-
Investments		15,052		1,850		13,202		-
Total	$	88,395	$	73,190	$	15,205	$	-

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Term Loan

6 Months Ended

Jun. 30, 2021

Debt Disclosure [Abstract]

Term Loan

8. Term Loan

In May 2017, the Company entered into a loan and security agreement (the “2017 Loan Agreement”), with SLR Investment Corp. (f/k/a Solar Capital Ltd.) and Silicon Valley Bank (together, the “Lenders”), for $10.0 million. The 2017 Loan Agreement had a maturity date of May 1, 2021. Debt issuance costs for the 2017 Loan Agreement were to be amortized to interest expense over the remaining term of the 2017 Loan Agreement using the effective-interest method.

In September 2019, the Company replaced the 2017 Loan Agreement with a new $20.0 million term loan with the Lenders (the “2019 Loan Agreement”). The restructured four-year term loan facility allows for an expansion of the 2017 Loan Agreement. Some of the proceeds from the 2019 Loan Agreement were used to pay off the 2017 Loan Agreement including the final fee of $325,000. The 2019 Loan Agreement extends the term of the credit facility until September 17, 2023. The payoff of the 2017 Loan Agreement was treated as a modification of the debt. Debt issuance costs for the 2019 Loan Agreement, including unamortized issuance costs for the 2017 Loan Agreement, will be amortized to interest expense over the remaining term of the 2019 Loan Agreement using the effective-interest method.

The interest rate under the 2019 Loan Agreement is the higher of (i) LIBOR plus 7.95% or (ii) 10.18% and there is an interest-only period until September 30, 2021. The rate at June 30, 2021 was 10.18%. Pursuant to the 2019 Loan Agreement, the Company provided a first priority security interest in substantially all of the Company’s assets, including intellectual property, subject to certain exceptions.

The Company entered into an Exit Agreement in connection with the 2019 Loan Agreement which provides for an aggregate payment of 4% of the loan commitment, or $800,000, to the lenders upon the occurrence of an exit event (the “Exit Fee”). The Company concluded that the exit payment obligation met the definition of a derivative that was required to be accounted for as a separate unit of accounting. The Company recorded the issuance-date fair value of the derivative liability of $763,000 as a debt discount and as a derivative liability in the Company’s balance sheet. The derivative liability is re-measured at each balance sheet date and any changes in estimated fair value is recorded as other income (expense). The Company paid the Exit Fee during 2020 in conjunction with the Company’s public offering, which was deemed to be an exit event pursuant to the Exit Agreement. Prior to its public offering in 2020, the Company recorded $30,000 in non-cash expense as a fair value adjustment to the derivative liability.

As of June 30, 2021, unpaid borrowings under the 2019 Loan Agreement totaled $20.0 million. For the three and six months ended June 30, 2021, the Company recorded $95,000 and $182,000, respectively, related to the amortization of debt discount associated with the 2019 Loan Agreement. For the three and six months ended June 30, 2020, the Company recorded $85,000 and $166,000, respectively, related to the amortization of debt discount associated with the 2019 Loan Agreement.

The 2019 Loan Agreement allows the Company to voluntarily prepay all (but not less than all) of the outstanding principal at any time. A prepayment premium of 3% or 1% through the one-year anniversary and the two-year anniversary, respectively, would be assessed on the outstanding principal. After the two-year anniversary, a 0.5% prepayment premium would be assessed on the outstanding principal. A final payment fee of $500,000 is due upon the earlier to occur of the maturity date or prepayment of such borrowings. For the three and six months ended June 30, 2021, the Company recorded $41,000 and $81,000, respectively, related to the amortization of the final payment fee associated with the 2019 Loan Agreement. For the three and six months ended June 30, 2020, the Company recorded $40,000 and $80,000, respectively, related to the amortization of the final payment fee associated with the 2019 Loan Agreement.

In an event of default under the 2019 Loan Agreement, the interest rate will be increased by 5% and the balance under the loan may become immediately due and payable at the option of the lenders.

The 2019 Loan Agreement includes restrictions on, among other things, the Company’s ability to incur additional indebtedness, change the name or location of the Company’s business, merge with or acquire other entities, pay dividends or make other distributions to holders of its capital stock, make certain investments, engage in transactions with affiliates, create liens, sell assets or pay subordinated debt.

Total term loan and unamortized debt discount balances are as follows (in thousands):

	June 30, 2021
Face value	$	20,000
Less: discount		(551	)
Total	$	19,449
Less: current portion		(7,293	)
Total	$	12,156

As of June 30, 2021, future principal payments due under the 2019 Loan Agreement are as follows (in thousands):

Year ended:
December 31, 2021	$	2,500
December 31, 2022		10,000
December 31, 2023		7,500
Total	$	20,000

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Stockholders' Equity

6 Months Ended

Jun. 30, 2021

Equity [Abstract]

Stockholders' Equity

9. Stockholders’ Equity

2019 At-the-Market Issuance Sales Agreement

On August 23, 2019, the Company entered into an Open Market Sale Agreement^SM (“2019 ATM Agreement”), with Jefferies LLC (“Jefferies”) with respect to an at-the-market offering program (the “2019 ATM Program”) under which the Company could offer and sell shares of its common stock (the “2019 ATM Shares”), having an aggregate offering price of up to $15.0 million through Jefferies as its sales agent. The offering and sale of 2019 ATM Shares were made pursuant to the Company’s shelf registration statement on Form S-3, which was declared effective by the SEC on February 11, 2019 (the “Registration Statement”).

The Company agreed to pay Jefferies a commission equal to 3.0% of the gross sales proceeds of such 2019 ATM Shares. The Company incurred $189,000 of legal, accounting and other costs to establish and activate the 2019 ATM program.

During 2020, the Company sold a total of 1,502,892 2019 ATM Shares under the 2019 ATM Agreement, in the open market, at a weighted average gross selling price of $7.13 per share for net proceeds of $10.4 million, which completed the program. The Company charged $135,000 in costs related to establishing and activating the program against additional paid in capital upon issuance of shares during 2020.

2021 At-the-Market Issuance Sales Agreement

On March 23, 2021, the Company entered into an Open Market Sale Agreement (the “2021 ATM Agreement”) with Cowen and Company, LLC (“Cowen”) with respect to an at-the-market offering program (the “2021 ATM Program”) under which the Company could offer and sell shares of its common stock (the “2021 ATM Shares”), having an aggregate offering price of up to $50.0 million through Cowen as its sales agent. The Company agreed to pay Cowen a commission up to 3.0% of the gross sales proceeds of such 2021 ATM Shares. As of June 30, 2021, the Company had received no proceeds from the sale of shares of common stock pursuant to the 2021 ATM Agreement.

Sale of Common Stock

In May 2020, the Company completed an underwritten public offering of 5,780,347 shares of its common stock (the “2020 Offering Shares”), pursuant to the Registration Statement. The 2020 Offering Shares were sold at an offering price of $8.65 per share, resulting in net proceeds of $46.6 million, after deducting underwriting discounts, commissions and offering expenses. In addition, the underwriters of the offering were granted the option for a period of 30 days to purchase up to an additional 867,052 shares of common stock at $8.65 per share. In June 2020, the underwriters exercised their option and purchased an additional 440,242 shares of common stock at $8.65 per share, resulting in additional net proceeds to the Company of $3.6 million, after deducting underwriting discounts, commissions and offering expenses.

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Stock-Based Compensation

6 Months Ended

Jun. 30, 2021

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Stock-Based Compensation

10.  Stock-Based Compensation

Stock Options

The Company’s 2017 Stock Option and Incentive Plan (the “2017 Stock Plan”) became effective in November 2017, upon the closing of the Company’s initial public offering and will expire in October 2027. Under the 2017 Stock Plan, the Company may grant incentive stock options, non-statutory stock options, restricted stock awards, restricted stock units (“RSUs”) and other stock-based awards. The Company’s 2014 Stock Incentive Plan (the “2014 Stock Plan”) was terminated in November 2017 upon the completion of the Company’s initial public offering and no further options were granted under the 2014 Stock Plan. At June 30, 2021, there were 600,688 options outstanding under the 2014 Stock Plan.  

As of June 30, 2021, there were 5,051,920 shares of the Company’s common stock authorized for issuance under the 2017 Stock Plan, including 359,651 options that have been forfeited from the 2014 Stock Plan.

At June 30, 2021, there were 2,903,186 options available for issuance under the 2017 Stock Plan, 2,076,680 options outstanding and 42,250 RSUs outstanding. Awards granted under the 2017 Stock Plan have a term of ten years. Vesting of awards under the 2017 Stock Plan is determined by the board of directors, but, is generally over one to four-year terms.

The fair value of options at date of grant was estimated using the Black-Scholes option-pricing model with the following assumptions: 

	Six Months Ended June 30,
	2020		2021
Risk-free interest rate	0.41% - 1.71%		0.50% - 0.88%
Expected dividend yield	0%		0%
Expected life	5.5-6.6 years		5.5-6.7 years
Expected volatility	72%-75%		72%-74%
Weighted-average grant date fair value	$	4.06	$	4.26

The following table summarizes information about stock option activity during the six months ended June 30, 2021 (in thousands, except share and per share data): 

	NUMBER OF SHARES			WEIGHTED- AVERAGE EXERCISE PRICE		WEIGHTED- AVERAGE REMAINING CONTRACTUAL TERM		AGGREGATE INTRINSIC VALUE
Outstanding, December 31, 2020		2,224,913		$	6.26
Granted		899,506			6.70
Exercised		(2,501	)		3.81
Forfeited		(444,550	)		6.58
Outstanding, June 30, 2021		2,677,368		$	6.35		7.97	$	2,023
Vested and exercisable, June 30, 2021		1,206,154		$	5.85		6.52	$	1,722
Vested and expected to vest, June 30, 2021		2,137,511		$	6.28		7.65	$	1,904

Of the options granted during the six months ended June 30, 2021, 112,050 were performance-based options. Vesting of these performance-based options is contingent on the occurrence of certain regulatory and commercial milestones. The Company is recognizing the expense as straight-line over the expected performance achievement term.

The following table summarizes information about RSU activity during the six months ended June 30, 2021:

	RSUs			AVERAGE GRANT DATE FAIR VALUE (IN DOLLARS PER SHARE)
Outstanding, December 31, 2020		80,450		$	3.25
Granted		—			—
Vested		(38,200	)		3.25
Forfeited		—			—
RSUs outstanding at June 30, 2021		42,250		$	3.25

The number of RSUs vested includes shares of common stock withheld on behalf of employees to satisfy the minimum statutory tax withholding requirements.

Unrecognized compensation expense related to unvested options as of June 30, 2021 was $3.5 million and will be recognized over the remaining vesting periods of the underlying awards. The weighted-average period over which such compensation is expected to be recognized is 2.5 years. Unrecognized compensation expense related to unvested RSUs as of June 30, 2021 was $30,000 and will be recognized over the remaining vesting periods of the underlying awards. The weighted-average period over which such compensation is expected to be recognized is 1 year.

The Company recorded stock-based compensation expense in the following expense categories of its accompanying condensed consolidated statements of operations and comprehensive loss for the three and six months ended June 30, 2020 and 2021 (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2020		2021		2020		2021
Research and development	$	177	$	233	$	321	$	459
General and administrative		444		356		808		651
Total	$	621	$	589	$	1,129	$	1,110

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Commitments and Contingencies

6 Months Ended

Jun. 30, 2021

Commitments And Contingencies Disclosure [Abstract]

Commitments and Contingencies

11. Commitments and Contingencies

Operating Leases

The Company leases office facilities and equipment under long-term, non-cancelable operating lease agreements. The leases expire at various dates through 2022 and do not include renewal options.

Certain leases provide for increases in future minimum annual rental payments as defined in the lease agreements. The leases generally also include real estate taxes and common area maintenance charges in the annual rental payments.

Pursuant to the terms of its lease agreement for the Company’s headquarters, the Company obtained a letter of credit in the amount of approximately $182,000 as security on the lease obligation. The letter of credit is listed as restricted cash on the Company’s consolidated balance sheets.

Short-term leases are leases having a term of twelve months or less. The Company recognizes short-term leases on a straight-line basis and does not record a related lease asset or liability for such leases.

The following is a maturity analysis of the annual undiscounted cash flows of the operating lease liabilities as of June 30, 2021 (in thousands):

Year ended:
December 31, 2021	$	265
December 31, 2022		496
Total minimum lease payments		761
Less imputed interest		(47	)
Total	$	714

	Six Months Ended June 30,
	2020			2021
Lease cost:
Operating lease cost	$	243		$	244
Short-term lease cost		-			-
Sublease income		(25	)		(26	)
Total lease cost	$	218		$	218
Other information
Cash paid for amounts included in the measurement of lease liabilities	$	267		$	262
Operating cash flows from operating leases	$	(20	)	$	(28	)
Weighted-average remaining lease term - operating leases	2.4 years			1.4 years
Weighted-average discount rate - operating leases		10.1	%		10.1	%

In February 2018, the Company signed a sublease agreement for its facility located in Lexington, Massachusetts. The lease commenced on April 1, 2018 and has an initial term of three years with an extension term through December 2022. In February 2020, the sublease was extended until December 31, 2022.

Research and Development Agreements

As part of the Company’s research and development efforts, the Company enters into research and development agreements with certain companies. These agreements contain varying terms and provisions which include fees and milestones to be paid by the Company. Some of these agreements also contain provisions which require the Company to make payments for exclusivity in the development of products in the area of loop diuretics.

Contingencies

The Company follows subtopic 450-20 of the FASB Accounting Standards Codification to report accounting for contingencies.

Certain conditions may exist as of the date the financial statements are issued, which may result in a loss to the Company but which will only be resolved when one or more future events occur or fail to occur. The Company assesses such contingent liabilities, and such assessment inherently involves an exercise of judgment.

If the assessment of a contingency indicates that it is probable that a material loss has been incurred and the amount of the liability can be estimated, then the estimated liability would be accrued in the Company’s financial statements. If the assessment indicates that a potential material loss contingency is not probable but is reasonably possible, or is probable but cannot be estimated, then the nature of the contingent liability, and an estimate of the range of possible losses, if determinable and material, would be disclosed. Loss contingencies considered remote are generally not disclosed unless they involve guarantees, in which case the guarantees would be disclosed.

Due to the discontinuation of use of the sc2Wear Infusor, the Company has received notice of termination costs related to the program. The Company has accrued all costs for which it either believes it is contractually liable or for which the Company has negotiated settlement agreements in good faith. However, certain of the Company’s vendors have claimed or billed for additional costs for which the Company believes it is not obligated. At this time, the Company estimates that additional termination costs, if any, will be immaterial to the Company’s financial statements. 

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Significant Accounting Policies (Policies)

6 Months Ended

Jun. 30, 2021

Accounting Policies [Abstract]

Use of Estimates

Use of Estimates

The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of expenses during the reported periods. Actual results could differ from those estimates.

Cash Cash Equivalents and Restricted Cash

Cash, Cash Equivalents and Restricted Cash

Cash, cash equivalents and restricted cash consists of bank deposits and money market accounts with financial institutions. Cash equivalents are carried at cost which approximates fair value due to their short-term nature and which the Company believes do not have a material exposure to credit risk. The Company considers all highly liquid investments with maturities of three months or less from the date of purchase to be cash equivalents. The Company’s cash and cash equivalent accounts, at times, may exceed federally insured limits. The Company has not experienced any losses in such accounts.

As of June 30, 2021, the Company classified $182,000 as restricted cash related to a letter of credit issued as a security deposit in connection with the Company’s lease of its corporate office facilities (Note 11). Cash, cash equivalents and restricted cash consists of the following (in thousands):

	December 31, 2020		June 30, 2021
Cash and cash equivalents	$	71,819	$	74,969
Restricted cash		182		182
Cash, cash equivalents and restricted cash	$	72,001	$	75,151

Concentration of Credit Risk

Concentration of Credit Risk

Financial instruments that subject the Company to credit risk primarily consist of cash and cash equivalents and short-term investments. The Company maintains its cash and cash equivalent balances with high-quality financial institutions and, consequently, the Company believes that such funds are subject to minimal credit risk. The Company’s short-term investments consist of United States Treasury securities, corporate debt securities and commercial paper. The Company has adopted an investment policy that limits the amounts the Company may invest in any one type of investment and requires all investments held by the Company to hold a minimum rating, thereby reducing credit risk exposure.

Investments

Investments

The Company invests excess cash balances in available-for-sale debt securities. The Company determines the appropriate classification of these securities at the time they are acquired and evaluates the appropriateness of such classifications at each balance sheet date. The Company reports available-for-sale investments at fair value at each balance sheet date and includes any unrealized gains and losses in accumulated other comprehensive income (loss), a component of stockholders’ equity. Realized gains and losses are determined using the specific identification method and are included in other income (expense). If any adjustment to fair value reflects a decline in the value of the investment, the Company considers all available evidence to evaluate the extent to which the decline is “other than temporary,” including the intention to sell and, if so, marks the investment to market through a charge to the Company’s consolidated statements of operations and comprehensive loss.

Leases

Leases

The Company determines if an arrangement is a lease at inception. Operating leases are included in right-of-use (“ROU”) lease assets, current portion of lease obligations, and long-term lease obligations on the Company’s balance sheets.  

ROU lease assets represent the Company’s right to use an underlying asset for the lease term and lease obligations represent the Company’s obligation to make lease payments arising from the lease. Operating ROU lease assets and obligations are recognized at the commencement date based on the present value of lease payments over the lease term. As most of the Company’s leases do not provide an implicit rate, the Company uses its incremental borrowing rate based on the information available at the commencement date in determining the present value of lease payments. The ROU lease asset excludes lease incentives. The Company’s lease terms may include options to extend or terminate the lease when it is reasonably certain that the Company will exercise that option. Lease expense for lease payments is recognized on a straight-line basis over the lease term.

Income Taxes

Income Taxes

The Company accounts for income taxes in accordance with the Financial Accounting Standards Board’s (“FASB”) Accounting Standards Codification (“ASC”) 740, Income Taxes. Deferred tax assets and liabilities are recorded to reflect the impact of temporary differences between amounts of assets and liabilities for financial reporting purposes and such amounts as measured under enacted tax laws. A valuation allowance is required to offset any net deferred tax assets if, based upon the available evidence, it is more likely than not that some or all of the deferred tax asset will not be realized.

The Company provides reserves for potential payments of tax to various tax authorities related to uncertain tax positions. The tax benefits recorded are based on a determination of whether and how much of a tax benefit taken by the Company in its tax filings or positions is “more likely than not” to be realized following resolution of any uncertainty related to the tax benefit, assuming that the matter in question will be raised by the tax authorities. Potential interest and penalties associated with such uncertain tax positions are recorded as a component of income tax expense. At June 30, 2021, the Company had no such accruals.

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Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2021

Accounting Policies [Abstract]

Schedule of Cash, Cash Equivalents and Restricted Cash

As of June 30, 2021, the Company classified $182,000 as restricted cash related to a letter of credit issued as a security deposit in connection with the Company’s lease of its corporate office facilities (Note 11). Cash, cash equivalents and restricted cash consists of the following (in thousands):

	December 31, 2020		June 30, 2021
Cash and cash equivalents	$	71,819	$	74,969
Restricted cash		182		182
Cash, cash equivalents and restricted cash	$	72,001	$	75,151

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Net Loss per Share (Tables)

6 Months Ended

Jun. 30, 2021

Earnings Per Share [Abstract]

Computation of Basic and Diluted Net Loss Per Share of Common Stock

The following table sets forth the computation of basic and diluted net loss per share of common stock (in thousands, except share and per share data):

	Three Months Ended June 30,						Six Months Ended June 30,
	2020			2021			2020			2021
Net loss	$	(8,295	)	$	(7,062	)	$	(15,387	)	$	(14,164	)
Weighted-average shares used in computing net loss per share		23,355,418			27,355,454			21,786,946			27,346,141
Net loss per share, basic and diluted	$	(0.36	)	$	(0.26	)	$	(0.71	)	$	(0.52	)

Schedule of Antidilutive Securities Excluded from Computation of Net Loss Per Share

The Company’s potentially dilutive securities, which include stock options and unvested restricted stock units, have been excluded from the computation of diluted net loss per share as the effect would be to reduce the net loss per share. Therefore, the weighted average number of common shares outstanding used to calculate both basic and diluted net loss per share attributable to common stockholders is the same. The Company excluded the following potential common shares, presented based on amounts outstanding at each period end, from the computation of diluted net loss per share attributable to common stockholders for the periods indicated because including them would have had an anti-dilutive effect.

	Three Months Ended June 30,				Six Months Ended June 30,
	2020		2021		2020		2021
Stock options to purchase common stock		2,029,843		2,677,368		2,029,843		2,677,368
Unvested restricted stock units		80,450		42,250		80,450		42,250
Total		2,110,293		2,719,618		2,110,293		2,719,618

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Investments (Tables)

6 Months Ended

Jun. 30, 2021

Investments Debt And Equity Securities [Abstract]

Summary of Available-for-Sale Classified Investments

A summary of the Company’s available-for-sale classified investments as of June 30, 2021 consisted of the following (in thousands):

	At June 30, 2021
Investments - Current:	Cost Basis		Accumulated Unrealized Gains		Accumulated Unrealized Losses		Fair Value
United States Treasury securities	$	1,850	$	-	$	-	$	1,850
Corporate debt securities		2,007		-		-		2,007
Commercial paper		11,195		-		-		11,195
Total	$	15,052	$	-	$	-	$	15,052

Summary of Amortized Cost and Fair Value of Available-for-Sale Investments by Contract Maturity

The amortized cost and fair value of the Company’s available-for-sale investments, by contract maturity, as of June 30, 2021 consisted of the following (in thousands):

	Amortized Cost		Fair Value
Due in one year or less	$	15,052	$	15,052
Total	$	15,052	$	15,052

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Property and Equipment (Tables)

6 Months Ended

Jun. 30, 2021

Property Plant And Equipment [Abstract]

Schedule of Purchased Property and Equipment

Purchased property and equipment consist of the following (dollars in thousands):

	ESTIMATED USEFUL LIFE	December 31, 2020			June 30, 2021
Office equipment	5 years	$	10		$	10
Office furniture	7 years		116			116
Computer equipment	3 years		8			8
Leasehold improvements	Life of lease		95			95
			229			229
Less: Accumulated depreciation			(136	)		(152	)
Property and equipment, net		$	93		$	77

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Accrued Expenses (Tables)

6 Months Ended

Jun. 30, 2021

Accrued Liabilities Current [Abstract]

Schedule of Accrued Expenses

Accrued expenses consist of the following (in thousands):

	December 31, 2020		June 30, 2021
Contract research and development	$	2,274	$	2,069
Employee compensation and related costs		1,978		1,000
Consulting and professional service fees		364		297
Interest		88		85
Financing related costs		43		69
Deposit liability		-		40
State taxes		40		19
Total accrued expenses	$	4,787	$	3,579

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Fair Value of Financial Instruments (Tables)

6 Months Ended

Jun. 30, 2021

Fair Value Disclosures [Abstract]

Summary of Assets Measured at Fair Value on Recurring Basis

The following tables summarize the Company’s assets that are measured at fair value on a recurring basis and indicates the level of the fair value hierarchy utilized to determine such fair values (in thousands):

	As of December 31, 2020
	TOTAL		Quoted Prices in Active Markets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets:
Cash equivalents	$	70,797	$	68,798	$	1,999	$	—
Total cash equivalents		70,797		68,798		1,999		—
United States Treasury securities		8,213		8,213		—		—
Corporate debt securities		11,973		—		11,973		—
Commercial paper		13,090		—		13,090		—
Investments		33,276		8,213		25,063		—
Total	$	104,073	$	77,011	$	27,062	$	—
	As of June 30, 2021
	TOTAL		Quoted Prices in Active Markets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets:
Cash equivalents	$	73,343	$	71,340	$	2,003	$	-
Total cash equivalents		73,343		71,340		2,003		-
United States Treasury securities		1,850		1,850		-		-
Corporate debt securities		2,007		-		2,007		-
Commercial paper		11,195		-		11,195		-
Investments		15,052		1,850		13,202		-
Total	$	88,395	$	73,190	$	15,205	$	-

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Term Loan (Tables)

6 Months Ended

Jun. 30, 2021

Debt Disclosure [Abstract]

Schedule of Total Term Loan and Unamortized Debt Discount

Total term loan and unamortized debt discount balances are as follows (in thousands):

	June 30, 2021
Face value	$	20,000
Less: discount		(551	)
Total	$	19,449
Less: current portion		(7,293	)
Total	$	12,156

Schedule of Future Principal Payments Due

As of June 30, 2021, future principal payments due under the 2019 Loan Agreement are as follows (in thousands):

Year ended:
December 31, 2021	$	2,500
December 31, 2022		10,000
December 31, 2023		7,500
Total	$	20,000

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Stock-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2021

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Schedule of Estimated Fair Value of Options Valuation Assumptions

The fair value of options at date of grant was estimated using the Black-Scholes option-pricing model with the following assumptions: 

	Six Months Ended June 30,
	2020		2021
Risk-free interest rate	0.41% - 1.71%		0.50% - 0.88%
Expected dividend yield	0%		0%
Expected life	5.5-6.6 years		5.5-6.7 years
Expected volatility	72%-75%		72%-74%
Weighted-average grant date fair value	$	4.06	$	4.26

Summary of Information about Stock Option Activity

The following table summarizes information about stock option activity during the six months ended June 30, 2021 (in thousands, except share and per share data): 

	NUMBER OF SHARES			WEIGHTED- AVERAGE EXERCISE PRICE		WEIGHTED- AVERAGE REMAINING CONTRACTUAL TERM		AGGREGATE INTRINSIC VALUE
Outstanding, December 31, 2020		2,224,913		$	6.26
Granted		899,506			6.70
Exercised		(2,501	)		3.81
Forfeited		(444,550	)		6.58
Outstanding, June 30, 2021		2,677,368		$	6.35		7.97	$	2,023
Vested and exercisable, June 30, 2021		1,206,154		$	5.85		6.52	$	1,722
Vested and expected to vest, June 30, 2021		2,137,511		$	6.28		7.65	$	1,904

Schedule of RSU Activity

The following table summarizes information about RSU activity during the six months ended June 30, 2021:

	RSUs			AVERAGE GRANT DATE FAIR VALUE (IN DOLLARS PER SHARE)
Outstanding, December 31, 2020		80,450		$	3.25
Granted		—			—
Vested		(38,200	)		3.25
Forfeited		—			—
RSUs outstanding at June 30, 2021		42,250		$	3.25

Summary of Stock-Based Compensation Expense

The Company recorded stock-based compensation expense in the following expense categories of its accompanying condensed consolidated statements of operations and comprehensive loss for the three and six months ended June 30, 2020 and 2021 (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2020		2021		2020		2021
Research and development	$	177	$	233	$	321	$	459
General and administrative		444		356		808		651
Total	$	621	$	589	$	1,129	$	1,110

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Commitments and Contingencies (Tables)

6 Months Ended

Jun. 30, 2021

Commitments And Contingencies Disclosure [Abstract]

Schedule of Maturity Analysis of Annual Undiscounted Cash Flows of Operating Lease Liabilities

The following is a maturity analysis of the annual undiscounted cash flows of the operating lease liabilities as of June 30, 2021 (in thousands):

Year ended:
December 31, 2021	$	265
December 31, 2022		496
Total minimum lease payments		761
Less imputed interest		(47	)
Total	$	714

Schedule of Lease Cost and Other Information of Operating Lease Liabilities

	Six Months Ended June 30,
	2020			2021
Lease cost:
Operating lease cost	$	243		$	244
Short-term lease cost		-			-
Sublease income		(25	)		(26	)
Total lease cost	$	218		$	218
Other information
Cash paid for amounts included in the measurement of lease liabilities	$	267		$	262
Operating cash flows from operating leases	$	(20	)	$	(28	)
Weighted-average remaining lease term - operating leases	2.4 years			1.4 years
Weighted-average discount rate - operating leases		10.1	%		10.1	%

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Description of Business and Basis of Presentation - Additional Information (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Accumulated deficit	$ (175,828)	$ (161,664)
Cash, cash equivalents, restricted cash, and short-term investments	$ 90,200

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Significant Accounting Policies - Additional Information (Details) - USD ($)	Jun. 30, 2021	Dec. 31, 2020
Schedule Of Accounting Policies [Line Items]
Restricted cash	$ 182,000	$ 182,000
Potential interest and penalties associated with uncertain tax positions, accruals	0
Letter of Credit
Schedule Of Accounting Policies [Line Items]
Restricted cash	$ 182,000

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Significant Accounting Policies - Schedule of Cash, Cash Equivalents and Restricted Cash (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020	Jun. 30, 2020	Dec. 31, 2019
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents [Abstract]
Cash and cash equivalents	$ 74,969	$ 71,819
Restricted cash	182	182
Cash, cash equivalents and restricted cash	$ 75,151	$ 72,001	$ 79,042	$ 72,806

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Net Loss per Share - Computation of Basic and Diluted Net Loss Per Share of Common Stock (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Earnings Per Share [Abstract]
Net loss	$ (7,062)	$ (8,295)	$ (14,164)	$ (15,387)
Weighted-average shares used in computing net loss per share	27,355,454	23,355,418	27,346,141	21,786,946
Net loss per share, basic and diluted	$ (0.26)	$ (0.36)	$ (0.52)	$ (0.71)

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Net Loss per Share - Schedule of Antidilutive Securities Excluded from Computation of Net Loss Per Share (Details) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from calculation of diluted net loss per share	2,719,618	2,110,293	2,719,618	2,110,293
Stock Options to Purchase Common Stock
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from calculation of diluted net loss per share	2,677,368	2,029,843	2,677,368	2,029,843
Unvested Restricted Stock Units
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from calculation of diluted net loss per share	42,250	80,450	42,250	80,450

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Investments - Summary of Available-for-Sale Classified Investments (Details) $ in Thousands	Jun. 30, 2021 USD ($)
Marketable Securities [Line Items]
Cost Basis	$ 15,052
Fair Value	15,052
United States Treasury Securities
Marketable Securities [Line Items]
Cost Basis	1,850
Fair Value	1,850
Corporate Debt Securities
Marketable Securities [Line Items]
Cost Basis	2,007
Fair Value	2,007
Commercial Paper
Marketable Securities [Line Items]
Cost Basis	11,195
Fair Value	$ 11,195

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Investments - Summary of Amortized Cost and Fair Value of Available-for-Sale Investments by Contract Maturity (Details) $ in Thousands	Jun. 30, 2021 USD ($)
Investments Debt And Equity Securities [Abstract]
Amortized Cost, Due in one year or less	$ 15,052
Amortized Cost, Total	15,052
Fair Value, Due in one year or less	15,052
Fair Value, Total	$ 15,052

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Property and Equipment - Schedule of Purchased Property and Equipment (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 229	$ 229
Less: Accumulated depreciation	(152)	(136)
Property and equipment, net	$ 77	93
Office Equipment
Property Plant And Equipment [Line Items]
ESTIMATED USEFUL LIFE	5 years
Property and equipment, gross	$ 10	10
Office Furniture
Property Plant And Equipment [Line Items]
ESTIMATED USEFUL LIFE	7 years
Property and equipment, gross	$ 116	116
Computer Equipment
Property Plant And Equipment [Line Items]
ESTIMATED USEFUL LIFE	3 years
Property and equipment, gross	$ 8	8
Leasehold Improvements
Property Plant And Equipment [Line Items]
ESTIMATED USEFUL LIFE	Life of lease
Property and equipment, gross	$ 95	$ 95

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Property and Equipment - Additional Information (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Property Plant And Equipment [Abstract]
Depreciation expense	$ 8,000	$ 9,000	$ 16,000	$ 17,000

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Accrued Expenses - Schedule of Accrued Expenses (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Accrued Liabilities Current [Abstract]
Contract research and development	$ 2,069	$ 2,274
Employee compensation and related costs	1,000	1,978
Consulting and professional service fees	297	364
Interest	85	88
Financing related costs	69	43
Deposit liability	40
State taxes	19	40
Total accrued expenses	$ 3,579	$ 4,787

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Fair Value of Financial Instruments - Summary of Assets Measured at Fair Value on Recurring Basis (Details) - Fair Value, Measurements, Recurring - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Assets:
Cash equivalents	$ 73,343	$ 70,797
Investments	15,052	33,276
Total	88,395	104,073
United States Treasury Securities
Assets:
Investments		8,213
Corporate Debt Securities
Assets:
Investments	2,007	11,973
Commercial Paper
Assets:
Investments	11,195	13,090
United States Treasury Securities
Assets:
Investments	1,850
Quoted Prices in Active Markets (Level 1) [Member]
Assets:
Cash equivalents	71,340	68,798
Investments	1,850	8,213
Total	73,190	77,011
Quoted Prices in Active Markets (Level 1) [Member] | United States Treasury Securities
Assets:
Investments		8,213
Quoted Prices in Active Markets (Level 1) [Member] | United States Treasury Securities
Assets:
Investments	1,850
Significant Other Observable Inputs (Level 2) [Member]
Assets:
Cash equivalents	2,003	1,999
Investments	13,202	25,063
Total	15,205	27,062
Significant Other Observable Inputs (Level 2) [Member] | Corporate Debt Securities
Assets:
Investments	2,007	11,973
Significant Other Observable Inputs (Level 2) [Member] | Commercial Paper
Assets:
Investments	$ 11,195	$ 13,090

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Term Loan - Additional Information (Details) - USD ($)	1 Months Ended		3 Months Ended		6 Months Ended
	Sep. 30, 2019	May 31, 2017	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Debt Instrument [Line Items]
Fair value adjustment to derivative liability						$ 30,000
SLR Investment Corp. and Silicon Valley Bank | 2017 Loan Agreement
Debt Instrument [Line Items]
Loan and security agreement, amount		$ 10,000,000.0
Loan agreement, maturity date		May 01, 2021
Payment of final fee	$ 325,000
Unpaid borrowings		$ 10,000,000.0
SLR Investment Corp. and Silicon Valley Bank | 2019 Loan Agreement
Debt Instrument [Line Items]
Loan and security agreement, amount	$ 20,000,000.0		$ 20,000,000.0		$ 20,000,000.0
Loan agreement, maturity date	Sep. 17, 2023
Loan agreement, term	4 years
Debt instrument, interest rate terms					The interest rate under the 2019 Loan Agreement is the higher of (i) LIBOR plus 7.95% or (ii) 10.18%
Debt instrument, effective interest rate			10.18%		10.18%
Exit fee, percentage					4.00%
Exit fee					$ 800,000
Derivative liability recorded against exit fee obligation			$ 763,000		763,000
Fair value adjustment to derivative liability					30,000
Unpaid borrowings	$ 20,000,000.0		20,000,000.0		20,000,000.0
Amortization of debt discount			95,000	$ 85,000	$ 182,000	166,000
Prepayment premium percentage after year two					0.50%
Final payment fee					$ 500,000
Amortization of final payment fee			$ 41,000	$ 40,000	$ 81,000	$ 80,000
Increase in interest rate on default					5.00%
SLR Investment Corp. and Silicon Valley Bank | 2019 Loan Agreement | Minimum
Debt Instrument [Line Items]
Interest rate, minimum			10.18%		10.18%
Prepayment premium percentage					1.00%
SLR Investment Corp. and Silicon Valley Bank | 2019 Loan Agreement | Maximum
Debt Instrument [Line Items]
Prepayment premium percentage					3.00%
SLR Investment Corp. and Silicon Valley Bank | 2019 Loan Agreement | Libor
Debt Instrument [Line Items]
Basis spread on variable base rate					7.95%

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Term Loan - Schedule of Total Term Loan and Unamortized Debt Discount (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Less: current portion	$ (7,293)	$ (2,408)
Total	12,156	$ 16,858
2019 Loan Agreement | SLR Investment Corp. and Silicon Valley Bank
Debt Instrument [Line Items]
Loan and security agreement, amount	20,000
Less: discount	(551)
Total	19,449
Less: current portion	(7,293)
Total	$ 12,156

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Term Loan - Schedule of Future Principal Payments Due (Details) - 2019 Loan Agreement - SLR Investment Corp. and Silicon Valley Bank $ in Thousands	Jun. 30, 2021 USD ($)
Debt Instrument [Line Items]
December 31, 2021	$ 2,500
December 31, 2022	10,000
December 31, 2023	7,500
Total	$ 20,000

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Stockholders' Equity - Additional Information (Details) - USD ($)			1 Months Ended		6 Months Ended	12 Months Ended
	Mar. 23, 2021	Aug. 23, 2019	Jun. 30, 2020	May 31, 2020	Jun. 30, 2021	Dec. 31, 2020
2019 ATM Agreement | Legal Accounting and Other Costs
Stockholders Equity Note [Line Items]
Stock issuance cost		$ 189,000
2019 ATM Agreement | Additional Paid-in Capital | Legal Accounting and Other Costs
Stockholders Equity Note [Line Items]
Stock issuance cost						$ 135,000
2019 ATM Agreement | Jefferies | Common Stock
Stockholders Equity Note [Line Items]
Percentage of commission on gross sales proceeds		3.00%
Number of shares sold						1,502,892
Proceeds from sale of shares,Net						$ 10,400,000
Issuance of common stock net of commissions and issuance costs, Shares						1,502,892
2019 ATM Agreement | Jefferies | Common Stock | Maximum
Stockholders Equity Note [Line Items]
Aggregate offering price		$ 15,000,000.0
2019 ATM Agreement | Jefferies | Common Stock | Weighted Average
Stockholders Equity Note [Line Items]
Selling price per share						$ 7.13
Selling price per share						$ 7.13
2021 ATM Agreement | Cowen | Common Stock
Stockholders Equity Note [Line Items]
Proceeds from sale of shares,Net					$ 0
2021 ATM Agreement | Cowen | Common Stock | Maximum
Stockholders Equity Note [Line Items]
Aggregate offering price	$ 50,000,000.0
Percentage of commission on gross sales proceeds	3.00%
Underwritten Public Offering | Common Stock
Stockholders Equity Note [Line Items]
Number of shares sold			440,242	5,780,347
Selling price per share			$ 8.65	$ 8.65
Proceeds from sale of shares,Net			$ 3,600,000	$ 46,600,000
Issuance of common stock net of commissions and issuance costs, Shares			440,242	5,780,347
Selling price per share			$ 8.65	$ 8.65
Underwritten Public Offering | Common Stock | Maximum
Stockholders Equity Note [Line Items]
Option granted to purchase additional shares				867,052

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Stock-Based Compensation - Additional Information (Details) - USD ($)	6 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Additional options granted	899,506
Stock option, number of shares outstanding	2,677,368	2,224,913
Unrecognized compensation expense	$ 3,500,000
Recognition period (in years)	2 years 6 months
Restricted Stock Units (RSUs)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unrecognized compensation expense	$ 30,000
Recognition period (in years)	1 year
Performance Shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Additional options granted	112,050
2017 Stock Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock option and incentive plan effective date	Nov. 30, 2017
Stock option and incentive plan expiration date	Oct. 31, 2027
Stock option, number of shares outstanding	2,076,680
Number of common shares authorized for issuance	5,051,920
Stock options, available for issuance	2,903,186
Term of option granted	10 years
2017 Stock Plan | Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock option vesting term	1 year
2017 Stock Plan | Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock option vesting term	4 years
2017 Stock Plan | Restricted Stock Units (RSUs)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of restricted stock units outstanding	42,250
2014 Stock Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock option and incentive plan expiration date	Nov. 30, 2017
Additional options granted	0
Stock option, number of shares outstanding	600,688
Number of options forfeited	359,651

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Stock-Based Compensation - Schedule of Estimated Fair Value of Options Valuation Assumptions (Details) - $ / shares	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Risk-free interest rate, minimum	0.50%	0.41%
Risk-free interest rate, maximum	0.88%	1.71%
Expected dividend yield	0.00%	0.00%
Expected volatility, minimum	72.00%	72.00%
Expected volatility, maximum	74.00%	75.00%
Weighted-average grant date fair value	$ 4.26	$ 4.06
Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected life	5 years 6 months	5 years 6 months
Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected life	6 years 8 months 12 days	6 years 7 months 6 days

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Stock-Based Compensation - Summary of Information about Stock Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	6 Months Ended
	Jun. 30, 2021
NUMBER OF SHARES
Number of shares outstanding, beginning balance	2,224,913
Additional options granted	899,506
Number of shares exercised	(2,501)
Number of shares forfeited	(444,550)
Number of shares outstanding, ending balance	2,677,368
Vested and exercisable, ending balance	1,206,154
Vested and expected to vest, ending balance	2,137,511
WEIGHTED-AVERAGE EXERCISE PRICE
Weighted average exercise prices, outstanding beginning balance	$ 6.26
Weighted average exercise prices, granted	6.70
Weighted average exercise prices, exercised	3.81
Weighted average exercise prices, forfeited	6.58
Weighted average exercise prices, outstanding ending balance	6.35
Weighted average exercise prices, vested and exercisable ending balance	5.85
Weighted average exercise prices, vested and expected to vest ending balance	$ 6.28
WEIGHTED-AVERAGE REMAINING CONTRACTUAL TERM
Weighted average remaining contractual term, outstanding	7 years 11 months 19 days
Weighted average remaining contractual term, vested and exercisable	6 years 6 months 7 days
Weighted average remaining contractual term, vested and expected to vest	7 years 7 months 24 days
AGGREGATE INTRINSIC VALUE
Aggregate intrinsic value, outstanding ending balance	$ 2,023
Aggregate intrinsic value, vested and exercisable ending balance	1,722
Aggregate intrinsic value, vested and expected to vest ending balance	$ 1,904

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Stock-Based Compensation - Schedule of RSU Activity (Details) - Restricted Stock Units (RSUs)	6 Months Ended
	Jun. 30, 2021 $ / shares shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
RSUs Outstanding, December 31, 2020 | shares	80,450
RSUs Vested | shares	(38,200)
RSUs outstanding at June 30, 2021 | shares	42,250
AVERAGE GRANT DATE FAIR VALUE, Outstanding, December 31, 2020 | $ / shares	$ 3.25
AVERAGE GRANT DATE FAIR VALUE, Vested | $ / shares	3.25
AVERAGE GRANT DATE FAIR VALUE, RSUs outstanding at June 30, 2021 | $ / shares	$ 3.25

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Stock-Based Compensation - Summary of Stock Based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Total stock-based compensation expense	$ 589	$ 621	$ 1,110	$ 1,129
Research and Development
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Total stock-based compensation expense	233	177	459	321
General and Administrative
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Total stock-based compensation expense	$ 356	$ 444	$ 651	$ 808

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Commitments and Contingencies - Additional Information (Details) - USD ($)	1 Months Ended	6 Months Ended
	Feb. 28, 2018	Jun. 30, 2021	Dec. 31, 2020
Commitments And Contingencies [Line Items]
Operating leases expire		2022
Restricted cash		$ 182,000	$ 182,000
Short-term lease asset		616,000	815,000
Short-term lease liability		485,000	$ 460,000
Operating sublease term	3 years
Short-term Leases Recognized on Straight-line Basis
Commitments And Contingencies [Line Items]
Short-term lease asset		0
Short-term lease liability		0
Letter of Credit
Commitments And Contingencies [Line Items]
Restricted cash		182,000
Letter of Credit | Lease Agreement Require Standby Letter of Credit
Commitments And Contingencies [Line Items]
Restricted cash		$ 182,000

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Commitments and Contingencies - Schedule of Maturity Analysis of Annual Undiscounted Cash Flows of Operating Lease Liabilities (Details) $ in Thousands	Jun. 30, 2021 USD ($)
Year ended:
December 31, 2021	$ 265
December 31, 2022	496
Total minimum lease payments	761
Less imputed interest	(47)
Total	$ 714

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Commitments and Contingencies - Schedule of Lease Cost and Other Information of Operating Lease Liabilities (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Lease cost:
Operating lease cost	$ 244	$ 243
Sublease income	(26)	(25)
Total lease cost	218	218
Other information
Cash paid for amounts included in the measurement of lease liabilities	262	267
Operating cash flows from operating leases	$ (28)	$ (20)
Weighted-average remaining lease term - operating leases	1 year 4 months 24 days	2 years 4 months 24 days
Weighted-average discount rate - operating leases	10.10%	10.10%