Stockholders' Equity	12 Months Ended
Dec. 28, 2019
Stockholders' Equity
Stockholders' Equity	Note 9—Stockholders’ Equity Serial Preferred Stock The Company’s authorized capital stock includes 10,000,000 shares of serial preferred stock, with a par value of $0.001 per share. No shares of preferred stock were outstanding at December 28, 2019 or December 29, 2018. On April 17, 2017, the Company entered into a rights agreement (the “Rights Agreement”) with Computershare Trust Company, N.A., as rights agent. In connection with the adoption of the Rights Agreement and pursuant to its terms, the Company’s board of directors authorized and declared a dividend of one right (each, a “Right”) for each outstanding share of the Company’s common stock to stockholders of record at the close of business on May 18, 2017 (the “Record Date”), and authorized the issuance of one Right for each share of the Company’s common stock issued by the Company (except as otherwise provided in the Rights Agreement) between the Record Date and the Distribution Date (as defined below). Each Right entitles the registered holder, subject to the terms of the Rights Agreement, to purchase from the Company, when exercisable and subject to adjustment, one unit consisting of one one-thousandth of a share (a “Unit”) of Series A Preferred Stock of the Company (the “Preferred Stock”), at a purchase price of $6.56 per Unit, subject to adjustment. Subject to the provisions of the Rights Agreement, including certain exceptions specified therein, a distribution date for the Rights (the “Distribution Date”) will occur upon the earlier of (i) 10 business days following a public announcement that a person or group of affiliated or associated persons (an “Acquiring Person”) has acquired or otherwise obtained beneficial ownership of 15% or more of the then‑outstanding shares of the Company’s common stock, and (ii) 10 business days (or such later date as may be determined by the Company’s board of directors) following the commencement of a tender offer or exchange offer that would result in a person or group becoming an Acquiring Person. The Rights are not exercisable until the Distribution Date and, unless earlier redeemed or exchanged by the Company pursuant to the terms of the Rights Agreement, will expire on the earlier of (i) the close of business on April 17, 2018, the first anniversary of the adoption of the Rights Agreement, and (ii) the date of any settlement, adjudication, dismissal with prejudice, abandonment by the Company or other conclusive and final resolution of the Company’s legal proceedings against SK hynix (see Note 8). On April 16, 2018, the Company entered into an amendment (the “Amendment”) to the Rights Agreement, which amended the definition of “Expiration Date” in the Rights Agreement to incorporate all of the Company’s legal proceedings against SK hynix, and amends the definition of “Final Expiration Date” in the Rights Agreement to mean the close of business on April 17, 2019. On April 17, 2019, the Company entered into a second amendment (the “Second Amendment”) to the Rights Agreement, which further amended the definition of “Expiration Date” in the Rights Agreement to extend the final expiration for an additional two years to April 17, 2021. As a result, the Rights will expire and become unexercisable on or before the close of business on April 17, 2021. In connection with the adoption of the Rights Agreement, the Company’s board of directors approved a Certificate of Designation of the Series A Preferred Stock (the “Certificate of Designation”) designating 1,000,000 shares of the Company’s serial preferred stock as Series A Preferred Stock and setting forth the rights, preferences and limitations of the Preferred Stock. The Company filed the Certificate of Designation with the Secretary of State of the State of Delaware on April 17, 2017. Common Stock The Company has one class of common stock with a par value of $0.001 per share. On August 15, 2018, the Company’s stockholders approved an amendment to the Restated Certificate of Incorporation to increase the number of shares of the common stock authorized for issuance from 150,000,000 to 300,000,000. 2017 ATM Program On November 14, 2017, the Company entered into the Sales Agreement with the Agent to sell shares of its common stock, with aggregate gross proceeds of up to $9.0 million, from time to time, through the ATM Program. Under the Sales Agreement, the Company set the parameters for the sale of shares, including the number of shares to be issued, the time period during which sales were requested to be made, limitation on the number of shares that could be sold in any one trading day and any minimum price below which sales could be made. On August 29, 2018, the Company completed the offering under the ATM Program after raising net proceeds of approximately $8.6 million through the sale of 40,680,368 shares of its common stock, after deducting sales commissions and other offering expenses paid by the Company. During the year ended December 29, 2018, the Company received net proceeds of approximately $5.8 million through the sale of 31,786,146 shares of its common stock, after deducting sales commissions and other offering expenses paid by the Company. Share Purchase Agreement On May 17, 2018, the Company entered into a Board approved arm’s length Share Purchase Agreement with a trust controlled by C.K. Hong, its President, Chief Executive Officer and Chairman of the Board, pursuant to which the Company sold to the trust 5,405,405 shares of its common stock, par value $0.001 per share, at a price per share of $0.148 (the closing price of its common stock as of the signing of the purchase agreement). The net proceeds received by the Company were $0.8 million. 2018 Offering On September 12, 2018, the Company entered into a Securities Purchase Agreement with certain investors, pursuant to which the Company issued and sold to the investors in a registered offering (“2018 Offering”) an aggregate of 22,222,220 shares of its common stock and warrants to purchase up to an aggregate of 11,111,110 shares of its common stock at a per share purchase price of $0.45 per share (see below Warrants). The 2018 Offering closed on September 14, 2018. The net proceeds to the Company from the 2018 Offering were approximately $9.2 million, after deducting placement agent fees and offering costs paid by the Company. The warrant has a term of five years commencing on the date when it first became exercisable on March 14, 2019 (181 days following the date of its issuance) and has an exercise price of $0.655 per share. The exercise price and the number of warrant shares issuable upon exercise of warrant are subject to adjustment in the event of, among other things, certain transactions affecting the Company’s common stock (including without limitation stock splits and stock dividends), and certain fundamental transactions (including without limitation a merger or other sale-of-company transaction). 2019 Lincoln Park Purchase Agreement On June 24, 2019, the Company entered into the 2019 Purchase Agreement with Lincoln Park, pursuant to which the Company has the right to sell to Lincoln Park up to an aggregate of $10 million in shares of its common stock subject to the conditions and limitations set forth in the 2019 Purchase Agreement. As consideration for entering into the 2019 Purchase Agreement, the Company issued to Lincoln Park 818,420 shares of its common stock as initial commitment shares in a noncash transaction on June 24, 2019 and will issue up to 818,420 additional shares of its common stock as additional commitment shares on a pro rata basis in connection with any additional purchases. The Company will not receive any cash proceeds from the issuance of these additional commitment shares. Pursuant to the 2019 Purchase Agreement, on any business day and as often as every other business day over the 36-month term of the 2019 Purchase Agreement, the Company has the right, from time to time, at its sole discretion and subject to certain conditions, to direct Lincoln Park to purchase up to 400,000 shares of its common stock, with such amount increasing as the closing sale price of its common stock increases; provided Lincoln Park’s obligation under any single such purchase would not exceed $1.0 million, unless the Company and Lincoln Park mutually agree to increase the maximum amount of such single regular purchase. If the Company directs Lincoln Park to purchase the maximum number of shares of common stock it then may sell in a regular purchase, then in addition to such regular purchase, and subject to certain conditions and limitations in the 2019 Purchase Agreement, the Company may direct Lincoln Park to purchase an additional amount of common stock that may not exceed the lesser of (i) 300% of the number of shares purchased pursuant to the corresponding regular purchase or (ii) 30% of the total number of shares of its common stock traded during a specified period on the applicable purchase date as set forth in the 2019 Purchase Agreement. Under certain circumstances and in accordance with the 2019 Purchase Agreement, the Company may direct Lincoln Park to purchase shares in multiple accelerated purchases on the same trading day. During the year ended December 28, 2019, Lincoln Park purchased an aggregate of 19,044,762 shares of the Company’s common stock for a net purchase price of $6.4 million. In connection with the purchases, the Company issued to Lincoln Park an aggregate of 523,633 shares of its common stock as additional commitment shares in noncash transactions. The Company controls the timing and amount of any sales of its common stock to Lincoln Park. There is no upper limit on the price per share that Lincoln Park must pay for the Company’s common stock under the 2019 Purchase Agreement, but in no event will shares be sold to Lincoln Park on a day the closing price is less than the floor price specified in the 2019 Purchase Agreement. In all instances, the Company may not sell shares of its common stock to Lincoln Park under the 2019 Purchase Agreement if that will result in Lincoln Park beneficially owning more than 9.99% of its common stock. The 2019 Purchase Agreement does not limit the Company’s ability to raise capital from other sources at the Company’s sole discretion, except that, subject to certain exceptions, the Company may not enter into any Variable Rate Transaction (as defined in the 2019 Purchase Agreement, including the issuance of any floating conversion rate or variable priced equity-like securities) during the 36 months after the date of the 2019 Purchase Agreement. The Company has the right to terminate the 2019 Purchase Agreement at any time, at no cost to the Company. 2020 Lincoln Park Purchase Agreement On March 5, 2020, the Company entered into the 2020 Purchase Agreement with Lincoln Park, pursuant to which the Company has the right to sell to Lincoln Park up to an aggregate of $20 million in shares of its common stock over the 36-month term of the 2020 Purchase Agreement subject to the conditions and limitations set forth in the 2020 Purchase Agreement. As consideration for entering into the 2020 Purchase Agreement, the Company issued to Lincoln Park 1,529,052 shares of its common stock as initial commitment shares in a noncash transaction on March 6, 2020 and will issue up to 917,431 additional shares of its common stock as additional commitment shares on a pro rata basis in connection with any additional purchases. The Company will not receive any cash proceeds from the issuance of these additional commitment shares. Pursuant to the 2020 Purchase Agreement, on any business day and as often as every other business day over the 36-month term of the 2020 Purchase Agreement, the Company has the right, from time to time, at its sole discretion and subject to certain conditions, to direct Lincoln Park to purchase up to 400,000 shares of its common stock, with such amount increasing as the closing sale price of its common stock increases; provided Lincoln Park’s obligation under any single such purchase will not exceed $1.0 million, unless the Company and Lincoln Park mutually agree to increase the maximum amount of such single regular purchase. If the Company directs Lincoln Park to purchase the maximum number of shares of common stock it then may sell in a regular purchase, then in addition to such regular purchase, and subject to certain conditions and limitations in the 2020 Purchase Agreement, the Company may direct Lincoln Park to purchase an additional amount of common stock that may not exceed the lesser of (i) 300% of the number of shares purchased pursuant to the corresponding regular purchase or (ii) 30% of the total number of shares of its common stock traded during a specified period on the applicable purchase date as set forth in the 2020 Purchase Agreement. Under certain circumstances and in accordance with the 2020 Purchase Agreement, the Company may direct Lincoln Park to purchase shares in multiple accelerated purchases on the same trading day. The Company controls the timing and amount of any sales of its common stock to Lincoln Park. There is no upper limit on the price per share that Lincoln Park must pay for the Company’s common stock under the 2020 Purchase Agreement, but in no event will shares be sold to Lincoln Park on a day the closing price is less than the floor price specified in the 2020 Purchase Agreement. In all instances, the Company may not sell shares of its common stock to Lincoln Park under the 2020 Purchase Agreement if that will result in Lincoln Park beneficially owning more than 9.99% of its common stock. The 2020 Purchase Agreement does not limit the Company’s ability to raise capital from other sources at the Company’s sole discretion, except that, subject to certain exceptions, the Company may not enter into any Variable Rate Transaction (as defined in the 2020 Purchase Agreement, including the issuance of any floating conversion rate or variable priced equity-like securities) during the 36 months after the date of the 2020 Purchase Agreement. The Company has the right to terminate the 2020 Purchase Agreement at any time, at no cost to the Company. Warrants In April and July 2018, the Company issued warrants to purchase up to 50,000 shares and 150,000 shares of its common stock at an exercise price of $0.25 to $0.15 per share, respectively, to a consulting firm as partial consideration for their services rendered. Separately, in July 2018, the Company issued warrants to purchase up to 300,000 shares of its common stock at an exercise price of $0.11 per share to a software development company as partial consideration to enter into a joint software development agreement. The aggregate fair value of the warrants issued to these firms, calculated using the Black-Scholes option pricing model, was not significant. In September 2018, in connection with the 2018 Offering, the Company issued warrants to purchase up to an aggregate of 11,111,110 shares of its common stock at a per share purchase price of $0.655 per share. As of December 28, 2019, there were outstanding warrants to purchase an aggregate of 15,010,012 shares of the Company’s common stock with a weighted-average exercise price of $0.62. There were no activities during the year ended December 28, 2019.

Note 9—Stockholders’ Equity

Serial Preferred Stock

The Company’s authorized capital stock includes 10,000,000 shares of serial preferred stock, with a par value of $0.001 per share. No shares of preferred stock were outstanding at December 28, 2019 or December 29, 2018.

On April 17, 2017, the Company entered into a rights agreement (the “Rights Agreement”) with Computershare Trust Company, N.A., as rights agent. In connection with the adoption of the Rights Agreement and pursuant to its terms, the Company’s board of directors authorized and declared a dividend of one right (each, a “Right”) for each outstanding share of the Company’s common stock to stockholders of record at the close of business on May 18, 2017 (the “Record Date”), and authorized the issuance of one Right for each share of the Company’s common stock issued by the Company (except as otherwise provided in the Rights Agreement) between the Record Date and the Distribution Date (as defined below).

Each Right entitles the registered holder, subject to the terms of the Rights Agreement, to purchase from the Company, when exercisable and subject to adjustment, one unit consisting of one one-thousandth of a share (a “Unit”) of Series A Preferred Stock of the Company (the “Preferred Stock”), at a purchase price of $6.56 per Unit, subject to adjustment. Subject to the provisions of the Rights Agreement, including certain exceptions specified therein, a distribution date for the Rights (the “Distribution Date”) will occur upon the earlier of (i) 10 business days following a public announcement that a person or group of affiliated or associated persons (an “Acquiring Person”) has acquired or otherwise obtained beneficial ownership of 15% or more of the then‑outstanding shares of the Company’s common stock, and (ii) 10 business days (or such later date as may be determined by the Company’s board of directors) following the commencement of a tender offer or exchange offer that would result in a person or group becoming an Acquiring Person. The Rights are not exercisable until the Distribution Date and, unless earlier redeemed or exchanged by the Company pursuant to the terms of the Rights Agreement, will expire on the earlier of (i) the close of business on April 17, 2018, the first anniversary of the adoption of the Rights Agreement, and (ii) the date of any settlement, adjudication, dismissal with prejudice, abandonment by the Company or other conclusive and final resolution of the Company’s legal proceedings against SK hynix (see Note 8).

On April 16, 2018, the Company entered into an amendment (the “Amendment”) to the Rights Agreement, which amended the definition of “Expiration Date” in the Rights Agreement to incorporate all of the Company’s legal proceedings against SK hynix, and amends the definition of “Final Expiration Date” in the Rights Agreement to mean the close of business on April 17, 2019. On April 17, 2019, the Company entered into a second amendment (the “Second Amendment”) to the Rights Agreement, which further amended the definition of “Expiration Date” in the Rights Agreement to extend the final expiration for an additional two years to April 17, 2021. As a result, the Rights will expire and become unexercisable on or before the close of business on April 17, 2021.

In connection with the adoption of the Rights Agreement, the Company’s board of directors approved a Certificate of Designation of the Series A Preferred Stock (the “Certificate of Designation”) designating 1,000,000 shares of the Company’s serial preferred stock as Series A Preferred Stock and setting forth the rights, preferences and limitations of the Preferred Stock. The Company filed the Certificate of Designation with the Secretary of State of the State of Delaware on April 17, 2017.

Common Stock

The Company has one class of common stock with a par value of $0.001 per share. On August 15, 2018, the Company’s stockholders approved an amendment to the Restated Certificate of Incorporation to increase the number of shares of the common stock authorized for issuance from 150,000,000 to 300,000,000.

2017 ATM Program

On November 14, 2017, the Company entered into the Sales Agreement with the Agent to sell shares of its common stock, with aggregate gross proceeds of up to $9.0 million, from time to time, through the ATM Program. Under the Sales Agreement, the Company set the parameters for the sale of shares, including the number of shares to be issued, the time period during which sales were requested to be made, limitation on the number of shares that could be sold in any one trading day and any minimum price below which sales could be made. On August 29, 2018, the Company completed the offering under the ATM Program after raising net proceeds of approximately $8.6 million through the sale of 40,680,368 shares of its common stock, after deducting sales commissions and other offering expenses paid by the Company. During the year ended December 29, 2018, the Company received net proceeds of approximately $5.8 million through the sale of 31,786,146 shares of its common stock, after deducting sales commissions and other offering expenses paid by the Company.

Share Purchase Agreement

On May 17, 2018, the Company entered into a Board approved arm’s length Share Purchase Agreement with a trust controlled by C.K. Hong, its President, Chief Executive Officer and Chairman of the Board, pursuant to which the Company sold to the trust 5,405,405 shares of its common stock, par value $0.001 per share, at a price per share of $0.148 (the closing price of its common stock as of the signing of the purchase agreement). The net proceeds received by the Company were $0.8 million.

2018 Offering

On September 12, 2018, the Company entered into a Securities Purchase Agreement with certain investors, pursuant to which the Company issued and sold to the investors in a registered offering (“2018 Offering”) an aggregate of 22,222,220 shares of its common stock and warrants to purchase up to an aggregate of 11,111,110 shares of its common stock at a per share purchase price of $0.45 per share (see below Warrants). The 2018 Offering closed on September 14, 2018. The net proceeds to the Company from the 2018 Offering were approximately $9.2 million, after deducting placement agent fees and offering costs paid by the Company. The warrant has a term of five years commencing on the date when it first became exercisable on March 14, 2019 (181 days following the date of its issuance) and has an exercise price of $0.655 per share. The exercise price and the number of warrant shares issuable upon exercise of warrant are subject to adjustment in the event of, among other things, certain transactions affecting the Company’s common stock (including without limitation stock splits and stock dividends), and certain fundamental transactions (including without limitation a merger or other sale-of-company transaction).

2019 Lincoln Park Purchase Agreement

On June 24, 2019, the Company entered into the 2019 Purchase Agreement with Lincoln Park, pursuant to which the Company has the right to sell to Lincoln Park up to an aggregate of $10 million in shares of its common stock subject to the conditions and limitations set forth in the 2019 Purchase Agreement. As consideration for entering into the 2019 Purchase Agreement, the Company issued to Lincoln Park 818,420 shares of its common stock as initial commitment shares in a noncash transaction on June 24, 2019 and will issue up to 818,420 additional shares of its common stock as additional commitment shares on a pro rata basis in connection with any additional purchases. The Company will not receive any cash proceeds from the issuance of these additional commitment shares.

Pursuant to the 2019 Purchase Agreement, on any business day and as often as every other business day over the 36-month term of the 2019 Purchase Agreement, the Company has the right, from time to time, at its sole discretion and subject to certain conditions, to direct Lincoln Park to purchase up to 400,000 shares of its common stock, with such amount increasing as the closing sale price of its common stock increases; provided Lincoln Park’s obligation under any single such purchase would not exceed $1.0 million, unless the Company and Lincoln Park mutually agree to increase the maximum amount of such single regular purchase. If the Company directs Lincoln Park to purchase the maximum number of shares of common stock it then may sell in a regular purchase, then in addition to such regular purchase, and subject to certain conditions and limitations in the 2019 Purchase Agreement, the Company may direct Lincoln Park to purchase an additional amount of common stock that may not exceed the lesser of (i) 300% of the number of shares purchased pursuant to the corresponding regular purchase or (ii) 30% of the total number of shares of its common stock traded during a specified period on the applicable purchase date as set forth in the 2019 Purchase Agreement. Under certain circumstances and in accordance with the 2019 Purchase Agreement, the Company may direct Lincoln Park to purchase shares in multiple accelerated purchases on the same trading day.

During the year ended December 28, 2019, Lincoln Park purchased an aggregate of 19,044,762 shares of the Company’s common stock for a net purchase price of $6.4 million. In connection with the purchases, the Company issued to Lincoln Park an aggregate of 523,633 shares of its common stock as additional commitment shares in noncash transactions.

The Company controls the timing and amount of any sales of its common stock to Lincoln Park. There is no upper limit on the price per share that Lincoln Park must pay for the Company’s common stock under the 2019 Purchase Agreement, but in no event will shares be sold to Lincoln Park on a day the closing price is less than the floor price specified in the 2019 Purchase Agreement. In all instances, the Company may not sell shares of its common stock to Lincoln Park under the 2019 Purchase Agreement if that will result in Lincoln Park beneficially owning more than 9.99% of its common stock.

The 2019 Purchase Agreement does not limit the Company’s ability to raise capital from other sources at the Company’s sole discretion, except that, subject to certain exceptions, the Company may not enter into any Variable Rate Transaction (as defined in the 2019 Purchase Agreement, including the issuance of any floating conversion rate or variable priced equity-like securities) during the 36 months after the date of the 2019 Purchase Agreement. The Company has the right to terminate the 2019 Purchase Agreement at any time, at no cost to the Company.

2020 Lincoln Park Purchase Agreement

On March 5, 2020, the Company entered into the 2020 Purchase Agreement with Lincoln Park, pursuant to which the Company has the right to sell to Lincoln Park up to an aggregate of $20 million in shares of its common stock over the 36-month term of the 2020 Purchase Agreement subject to the conditions and limitations set forth in the 2020 Purchase Agreement. As consideration for entering into the 2020 Purchase Agreement, the Company issued to Lincoln Park 1,529,052 shares of its common stock as initial commitment shares in a noncash transaction on March 6, 2020 and will issue up to 917,431 additional shares of its common stock as additional commitment shares on a pro rata basis in connection with any additional purchases. The Company will not receive any cash proceeds from the issuance of these additional commitment shares.

Pursuant to the 2020 Purchase Agreement, on any business day and as often as every other business day over the 36-month term of the 2020 Purchase Agreement, the Company has the right, from time to time, at its sole discretion and subject to certain conditions, to direct Lincoln Park to purchase up to 400,000 shares of its common stock, with such amount increasing as the closing sale price of its common stock increases; provided Lincoln Park’s obligation under any single such purchase will not exceed $1.0 million, unless the Company and Lincoln Park mutually agree to increase the maximum amount of such single regular purchase. If the Company directs Lincoln Park to purchase the maximum number of shares of common stock it then may sell in a regular purchase, then in addition to such regular purchase, and subject to certain conditions and limitations in the 2020 Purchase Agreement, the Company may direct Lincoln Park to purchase an additional amount of common stock that may not exceed the lesser of (i) 300% of the number of shares purchased pursuant to the corresponding regular purchase or (ii) 30% of the total number of shares of its common stock traded during a specified period on the applicable purchase date as set forth in the 2020 Purchase Agreement. Under certain circumstances and in accordance with the 2020 Purchase Agreement, the Company may direct Lincoln Park to purchase shares in multiple accelerated purchases on the same trading day.

The Company controls the timing and amount of any sales of its common stock to Lincoln Park. There is no upper limit on the price per share that Lincoln Park must pay for the Company’s common stock under the 2020 Purchase Agreement, but in no event will shares be sold to Lincoln Park on a day the closing price is less than the floor price specified in the 2020 Purchase Agreement. In all instances, the Company may not sell shares of its common stock to Lincoln Park under the 2020 Purchase Agreement if that will result in Lincoln Park beneficially owning more than 9.99% of its common stock.

The 2020 Purchase Agreement does not limit the Company’s ability to raise capital from other sources at the Company’s sole discretion, except that, subject to certain exceptions, the Company may not enter into any Variable Rate Transaction (as defined in the 2020 Purchase Agreement, including the issuance of any floating conversion rate or variable priced equity-like securities) during the 36 months after the date of the 2020 Purchase Agreement. The Company has the right to terminate the 2020 Purchase Agreement at any time, at no cost to the Company.

Warrants

In April and July 2018, the Company issued warrants to purchase up to 50,000 shares and 150,000 shares of its common stock at an exercise price of $0.25 to $0.15 per share, respectively, to a consulting firm as partial consideration for their services rendered. Separately, in July 2018, the Company issued warrants to purchase up to 300,000 shares of its common stock at an exercise price of $0.11 per share to a software development company as partial consideration to enter into a joint software development agreement. The aggregate fair value of the warrants issued to these firms, calculated using the Black-Scholes option pricing model, was not significant. In September 2018, in connection with the 2018 Offering, the Company issued warrants to purchase up to an aggregate of 11,111,110 shares of its common stock at a per share purchase price of $0.655 per share. As of December 28, 2019, there were outstanding warrants to purchase an aggregate of 15,010,012 shares of the Company’s common stock with a weighted-average exercise price of $0.62. There were no activities during the year ended December 28, 2019.