Note 1 - Organization	9 Months Ended
Sep. 30, 2021
Notes to Financial Statements
Nature of Operations [Text Block]	1. Organization Organization, Nature of Business Avinger, Inc. (the “Company”), a Delaware corporation, was incorporated in March 2007. The Company designs, manufactures and sells image-guided, catheter-based systems that are used by physicians to treat patients with peripheral artery disease (“PAD”). Patients with PAD have a build-up of plaque in the arteries that supply blood to areas away from the heart, particularly the pelvis and legs. The Company manufactures and sells a suite of products in the United States (“U.S.”) and in select international markets. The Company has developed its Lumivascular platform, which integrates optical coherence tomography ( “OCT”) visualization with interventional catheters and is the industry’s only system that provides real-time intravascular imaging during the treatment portion of PAD procedures. The Company’s Lumivascular platform consists of a capital component, our Lightbox console, as well as a variety of disposable catheter products. The Company’s current catheter products include its non-imaging catheters, Wildcat and Kittycat2, as well as its Lumivascular platform products, Ocelot, Ocelot PIXL, Ocelot MVRX and Tigereye, all of which are designed to allow physicians to penetrate a total blockage in an artery, known as a chronic total occlusion (“CTO”). The Company also has image-guided atherectomy solutions under its suite of Lumivascular products, Pantheris and Pantheris SV, which are designed to allow physicians to precisely remove arterial plaque in PAD patients. The Company is located in Redwood City, California. Liquidity Matters In the course of its activities, the Company has incurred losses and negative cash flows from operations since its inception. As of September 30, 2021, the Company had an accumulated deficit of $379.8 million. The Company expects to incur losses for the foreseeable future. The Company believes that its cash and cash equivalents of $23.1 million at September 30, 2021 and expected revenues and funds from operations will be sufficient to allow the Company to fund its current operations through 2022. The Company received net proceeds of approximately $3.9 million from the sale of its common stock in its January 2020 offering, $2.3 million of loan proceeds in April 2020 pursuant to the Paycheck Protection Program (“PPP”) under the Coronavirus Aid, Relief and Economic Security (“CARES”) Act, which was forgiven in April 2021, $3.0 million from the sale of its common stock in April and May 2020, $5.5 million from the sale of its common stock in June and July 2020, $11.3 million from the sale of its common stock in August and September 2020, and approximately $13.1 million from the sale of its common stock in February 2021. The Company does not have any immediate plans to raise additional funds through future equity or debt financings. However, the Company may decide to raise additional funds to meet its operational needs and capital requirements for product development, clinical trials and commercialization or other strategic objectives. The Company can provide no assurance that it will be successful in raising funds pursuant to additional equity or debt financings or that such funds will be raised at prices that do not create substantial dilution for its existing stockholders. Given the volatility in the Company’s stock price, any financing that it may undertake in the next twelve months could cause substantial dilution to its existing stockholders, there can be no assurance that the Company will be successful in acquiring additional funding at levels sufficient to fund its various endeavors. In addition, the COVID-19 pandemic and responses thereto have resulted in reduced consumer and investor confidence, instability in the credit and financial markets, volatile corporate profits, restrictions on elective medical procedures, and reduced business and consumer spending, which could increase the cost of capital and/or limit the availability of capital to the Company. During the second quarter of 2020, the Company took certain actions to manage available cash and other resources to mitigate the effects of COVID-19 on its business, which included reduction of discretionary costs, reduction of base salaries for all of its non-manufacturing employees by 20% and reduction of hours worked by its manufacturing workers by 20%. Salaries and hours worked largely returned to prior levels by July 2020. On September 22, 2021, we received a letter from Nasdaq’s Listing Qualifications Department notifying us that we were not in compliance with Nasdaq Listing Rule 5550(a)(2), as the minimum bid price for our listed securities was less than $1 for the previous 30 consecutive business days. We have a period of 180 calendar days, or until March 21, 2022, to regain compliance with the rule referred to in this paragraph. To regain compliance, the bid price of our common stock must close at $1 or more for a minimum of ten consecutive business days. The notice has no present impact on the listing of our securities on Nasdaq. If Nasdaq delists our common stock from trading on its exchange and we are not able to list our securities on another national securities exchange, we could face significant material adverse consequences including among other things, a decreased ability to issue additional securities or obtain additional financing in the future, a limited availability of market quotations for our securities, reduced liquidity for our securities. If the Company is unable to raise additional capital in sufficient amounts or on terms acceptable to it, the Company may have to significantly reduce its operations or delay, scale back or discontinue the development of one or more of its products. The financial statements do not include any adjustments that might result from the outcome of this uncertainty. The Company’s ultimate success will largely depend on its continued development of innovative medical technologies, its ability to successfully commercialize its products and its ability to raise significant additional funding. Public Offerings On January 31, 2020, the Company completed a public offering of 6,428,572 shares of common stock at an offering price of $0.70 per share. As a result, the Company received net proceeds of approximately $3.9 million after underwriting discounts, commissions, legal and accounting fees, and other ancillary expenses. Due to anti-dilution provisions, the conversion price of the outstanding shares of Series B preferred stock, which was issued in our February 2018 offering, was reduced to $0.70 per share. On April 30, 2020, the Company completed a public offering of 12,600,000 shares of common stock at an offering price of $0.25 per share. On May 6, 2020 the Company issued an additional 1,890,000 shares of common stock at the same offering price pursuant to the exercise in full of the underwriter’s over-allotment option in connection with the aforementioned offering. As a result, the Company received aggregate net proceeds of approximately $3.0 million after underwriting discounts, commissions, legal and accounting fees, and other ancillary expenses. Due to anti-dilution provisions, the conversion price of the outstanding shares of Series B preferred stock, which was issued in our February 2018 offering, was reduced to $0.25 per share. On June 26, 2020, the Company completed a public offering of 20,000,000 shares of common stock at an offering price of $0.27 per share. On July 9, 2020 the Company issued an additional 3,000,000 shares of common stock at the same offering price pursuant to the exercise in full of the underwriter’s over-allotment option in connection with the aforementioned offering resulting in $0.7 million of additional net proceeds. As a result, the Company received aggregate net proceeds of approximately $5.5 million including the overallotment option and after underwriting discounts, commissions, legal and accounting fees, and other ancillary expenses. On August 6, 2020, under our universal shelf registration statement filed on March 7, 2019 (the “Shelf Registration Statement”), the Company completed a public offering of 15,789,474 shares of common stock at an offering price of $0.38 per share. On August 11, 2020 the Company issued an additional 2,368,421 shares of common stock at the same offering price pursuant to the exercise in full of the underwriter’s over-allotment option in connection with the aforementioned offering. As a result, the Company received aggregate net proceeds of approximately $6.2 million after underwriting discounts, commissions, legal and accounting fees, and other ancillary expenses. On August 25, 2020, under the Shelf Registration Statement, the Company completed a public offering of 11,063,830 shares of common stock at an offering price of $0.47 per share. On September 1, 2020 the Company issued an additional 1,000,000 shares of common stock at the same offering price pursuant to the exercise in full of the underwriter’s over-allotment option in connection with the aforementioned offering. As a result, the Company received aggregate net proceeds of approximately $5.1 million after underwriting discounts, commissions, legal and accounting fees, and other ancillary expenses. On February 2, 2021, under the Shelf Registration Statement, the Company completed a bought deal offering of 10,000,000 shares of common stock at an offering price of $1.44 per share. As a result, the Company received aggregate net proceeds of approximately $13.1 million after underwriting discounts, commissions, legal and accounting fees, and other ancillary expenses.

Note 1 - Organization

9 Months Ended

Sep. 30, 2021

1. Organization

Organization, Nature of Business

Avinger, Inc. (the “Company”), a Delaware corporation, was incorporated in March 2007. The Company designs, manufactures and sells image-guided, catheter-based systems that are used by physicians to treat patients with peripheral artery disease (“PAD”). Patients with PAD have a build-up of plaque in the arteries that supply blood to areas away from the heart, particularly the pelvis and legs. The Company manufactures and sells a suite of products in the United States (“U.S.”) and in select international markets. The Company has developed its Lumivascular platform, which integrates optical coherence tomography ( “OCT”) visualization with interventional catheters and is the industry’s only system that provides real-time intravascular imaging during the treatment portion of PAD procedures. The Company’s Lumivascular platform consists of a capital component, our Lightbox console, as well as a variety of disposable catheter products. The Company’s current catheter products include its non-imaging catheters, Wildcat and Kittycat2, as well as its Lumivascular platform products, Ocelot, Ocelot PIXL, Ocelot MVRX and Tigereye, all of which are designed to allow physicians to penetrate a total blockage in an artery, known as a chronic total occlusion (“CTO”). The Company also has image-guided atherectomy solutions under its suite of Lumivascular products, Pantheris and Pantheris SV, which are designed to allow physicians to precisely remove arterial plaque in PAD patients. The Company is located in Redwood City, California.

Liquidity Matters

In the course of its activities, the Company has incurred losses and negative cash flows from operations since its inception. As of September 30, 2021, the Company had an accumulated deficit of $379.8 million. The Company expects to incur losses for the foreseeable future. The Company believes that its cash and cash equivalents of $23.1 million at September 30, 2021 and expected revenues and funds from operations will be sufficient to allow the Company to fund its current operations through 2022. The Company received net proceeds of approximately $3.9 million from the sale of its common stock in its January 2020 offering, $2.3 million of loan proceeds in April 2020 pursuant to the Paycheck Protection Program (“PPP”) under the Coronavirus Aid, Relief and Economic Security (“CARES”) Act, which was forgiven in April 2021, $3.0 million from the sale of its common stock in April and May 2020, $5.5 million from the sale of its common stock in June and July 2020, $11.3 million from the sale of its common stock in August and September 2020, and approximately $13.1 million from the sale of its common stock in February 2021. The Company does not have any immediate plans to raise additional funds through future equity or debt financings. However, the Company may decide to raise additional funds to meet its operational needs and capital requirements for product development, clinical trials and commercialization or other strategic objectives.

The Company can provide no assurance that it will be successful in raising funds pursuant to additional equity or debt financings or that such funds will be raised at prices that do not create substantial dilution for its existing stockholders. Given the volatility in the Company’s stock price, any financing that it may undertake in the next twelve months could cause substantial dilution to its existing stockholders, there can be no assurance that the Company will be successful in acquiring additional funding at levels sufficient to fund its various endeavors. In addition, the COVID-19 pandemic and responses thereto have resulted in reduced consumer and investor confidence, instability in the credit and financial markets, volatile corporate profits, restrictions on elective medical procedures, and reduced business and consumer spending, which could increase the cost of capital and/or limit the availability of capital to the Company. During the second quarter of 2020, the Company took certain actions to manage available cash and other resources to mitigate the effects of COVID-19 on its business, which included reduction of discretionary costs, reduction of base salaries for all of its non-manufacturing employees by 20% and reduction of hours worked by its manufacturing workers by 20%. Salaries and hours worked largely returned to prior levels by July 2020.

On September 22, 2021, we received a letter from Nasdaq’s Listing Qualifications Department notifying us that we were not in compliance with Nasdaq Listing Rule 5550(a)(2), as the minimum bid price for our listed securities was less than $1 for the previous 30 consecutive business days. We have a period of 180 calendar days, or until March 21, 2022, to regain compliance with the rule referred to in this paragraph. To regain compliance, the bid price of our common stock must close at $1 or more for a minimum of ten consecutive business days. The notice has no present impact on the listing of our securities on Nasdaq. If Nasdaq delists our common stock from trading on its exchange and we are not able to list our securities on another national securities exchange, we could face significant material adverse consequences including among other things, a decreased ability to issue additional securities or obtain additional financing in the future, a limited availability of market quotations for our securities, reduced liquidity for our securities.

If the Company is unable to raise additional capital in sufficient amounts or on terms acceptable to it, the Company may have to significantly reduce its operations or delay, scale back or discontinue the development of one or more of its products. The financial statements do not include any adjustments that might result from the outcome of this uncertainty. The Company’s ultimate success will largely depend on its continued development of innovative medical technologies, its ability to successfully commercialize its products and its ability to raise significant additional funding.

Public Offerings

On January 31, 2020, the Company completed a public offering of 6,428,572 shares of common stock at an offering price of $0.70 per share. As a result, the Company received net proceeds of approximately $3.9 million after underwriting discounts, commissions, legal and accounting fees, and other ancillary expenses. Due to anti-dilution provisions, the conversion price of the outstanding shares of Series B preferred stock, which was issued in our February 2018 offering, was reduced to $0.70 per share.

On April 30, 2020, the Company completed a public offering of 12,600,000 shares of common stock at an offering price of $0.25 per share. On May 6, 2020 the Company issued an additional 1,890,000 shares of common stock at the same offering price pursuant to the exercise in full of the underwriter’s over-allotment option in connection with the aforementioned offering. As a result, the Company received aggregate net proceeds of approximately $3.0 million after underwriting discounts, commissions, legal and accounting fees, and other ancillary expenses. Due to anti-dilution provisions, the conversion price of the outstanding shares of Series B preferred stock, which was issued in our February 2018 offering, was reduced to $0.25 per share.

On June 26, 2020, the Company completed a public offering of 20,000,000 shares of common stock at an offering price of $0.27 per share. On July 9, 2020 the Company issued an additional 3,000,000 shares of common stock at the same offering price pursuant to the exercise in full of the underwriter’s over-allotment option in connection with the aforementioned offering resulting in $0.7 million of additional net proceeds. As a result, the Company received aggregate net proceeds of approximately $5.5 million including the overallotment option and after underwriting discounts, commissions, legal and accounting fees, and other ancillary expenses.

On August 6, 2020, under our universal shelf registration statement filed on March 7, 2019 (the “Shelf Registration Statement”), the Company completed a public offering of 15,789,474 shares of common stock at an offering price of $0.38 per share. On August 11, 2020 the Company issued an additional 2,368,421 shares of common stock at the same offering price pursuant to the exercise in full of the underwriter’s over-allotment option in connection with the aforementioned offering. As a result, the Company received aggregate net proceeds of approximately $6.2 million after underwriting discounts, commissions, legal and accounting fees, and other ancillary expenses.

On August 25, 2020, under the Shelf Registration Statement, the Company completed a public offering of 11,063,830 shares of common stock at an offering price of $0.47 per share. On September 1, 2020 the Company issued an additional 1,000,000 shares of common stock at the same offering price pursuant to the exercise in full of the underwriter’s over-allotment option in connection with the aforementioned offering. As a result, the Company received aggregate net proceeds of approximately $5.1 million after underwriting discounts, commissions, legal and accounting fees, and other ancillary expenses.

On February 2, 2021, under the Shelf Registration Statement, the Company completed a bought deal offering of 10,000,000 shares of common stock at an offering price of $1.44 per share. As a result, the Company received aggregate net proceeds of approximately $13.1 million after underwriting discounts, commissions, legal and accounting fees, and other ancillary expenses.