This Amendment No. 15 (Amendment No. 14) to Schedule 13D amends
the statement on Schedule 13D filed with the United States Securities and Exchange Commission on October 30, 2017, as amended by Amendment No. 1 thereto filed on August 28, 2018, Amendment No. 2 thereto filed on July 18,
2019, Amendment No. 3 thereto filed on September 8, 2022, Amendment No. 4 thereto filed on September 15, 2022, Amendment No. 5 thereto filed on January 9, 2023, Amendment No. 6 thereto filed on March 17, 2023,
Amendment No. 7 thereto filed on May 24, 2023, Amendment No. 8 thereto filed on June 9, 2023, Amendment No. 9 thereto filed on June 30, 2023, Amendment No. 10 thereto filed on August 3, 2023, Amendment
No. 11 thereto filed on August 10, 2023, Amendment No. 12 thereto filed on September 20, 2023, Amendment No. 13 thereto filed on October 2, 2023 and Amendment No. 14 thereto filed on October 5, 2023
(collectively and as amended, the Schedule 13D), relating to the Common Stock. This Amendment No. 15 is being filed by Foris Ventures, LLC, Vallejo Ventures Trust, L. John Doerr, Ann Doerr, and Barbara Hager (collectively,
the Reporting Persons).
The Items below amend the information disclosed under the corresponding Items of the Schedule 13D as described
below. Except as specifically provided herein, this Amendment No. 15 does not modify any of the information previously reported in the Schedule 13D.
ITEM 4. PURPOSE OF TRANSACTION.
Item 4 of the
Schedule 13D is supplemented by the following:
As previously reported, on August 9, 2023, the Company and certain of its direct and indirect
subsidiaries (collectively, the Company Parties or the Debtors) filed voluntary petitions for relief under Chapter 11 of Title 11 of the United States Code (the Bankruptcy Code) in the United
States Bankruptcy Court for the District of Delaware (the Bankruptcy Court), thereby commencing Chapter 11 cases for the Company Parties (the Chapter 11 Cases). The Company Parties continue to operate their
business as debtors in possession under the jurisdiction of the Bankruptcy Court and in accordance with the applicable provisions of the Bankruptcy Code and orders of the Bankruptcy Court.
Plan Support Agreement
On October 12, 2023
(the Execution Date), the Debtors entered into that certain Plan Support Agreement (together with all exhibits and schedules thereto, the PSA), with certain of the Debtors secured creditors, including FV
and Euagore LLC, Anesma Group, LLC, Anjo Ventures, LLC, Perrara and Muirisc, LLC, each affiliates of FV (collectively, the Consenting Parties). The PSA, together with a term sheet attached as an exhibit to, and incorporated into,
the PSA (the Term Sheet), provide the framework for a plan of reorganization consistent with the terms and provisions of the Term Sheet (the Plan).
The PSA contains certain covenants applicable to the Consenting Parties, including, among other things, that the Consenting Parties shall: (i) vote in
favor of the Plan and take all steps reasonably necessary and desirable to support, facilitate, implement, consummate or otherwise give effect to the Restructuring Transactions (as defined in the PSA) in accordance with the PSA; (ii) to the
extent any legal or structural impediment arises that would prevent, hinder, or delay the consummation of the Restructuring Transactions, take all steps reasonably necessary to address such impediment; (iii) use commercially reasonable efforts
to oppose the efforts of any person seeking to object to, delay, impede, or take any other action to interfere with the acceptance, implementation, or consummation of the Restructuring Transactions; (iv) use commercially reasonable efforts to
cooperate with and assist the Debtors in obtaining additional support for the Restructuring Transactions from the Debtors other stakeholders; (v) use commercially reasonable efforts and provide assistance as may be reasonably required by
the Debtors to obtain any third-party approvals, including regulatory approvals, required for the consummation of the Restructuring Transactions; and (vi) negotiate in good faith and use commercially reasonable efforts to execute and implement
the Definitive Documents (as defined in the PSA) to which it is required to be a party.
The PSA contains certain covenants applicable to the Company,
including, among other things, that the Company shall: (i) support and take all steps reasonably necessary and desirable to support, facilitate, implement, consummate or otherwise give effect to the Restructuring Transactions in accordance with
the PSA; (ii) to the extent any legal or structural impediment arises that would prevent, hinder, or delay the consummation of the Restructuring Transactions contemplated herein, take all steps reasonably necessary and desirable to address any
such impediment; (iii) consider in good faith all reasonable actions necessary or reasonably requested by the Consenting Parties to facilitate the solicitation, confirmation (if applicable), and consummation of the Restructuring Transactions;
(iv) use commercially reasonable efforts to oppose and object to the efforts of any person seeking to object to, delay,