NOTE 5 — INVESTMENTS

Investment in convertible bond - On September 28, 2020, the Company entered into a convertible bond purchase agreement pursuant to which it purchased at face value a convertible bond of Telcon in the principal amount of approximately $26.1 million which matures on October 16, 2030 and bears interest at the rate of 2.1% per year, payable quarterly. Beginning October 16, 2021, the Company became entitled on a quarterly basis to call for early redemption of all or any portion of the principal amount of the convertible bond. The convertible bond is convertible at the holder’s option at any time and from time to time into common shares of Telcon at an initial conversion price of KRW9,232, or approximately US$8.00 per share. The initial conversion price is subject to downward adjustment on a monthly based on the volume-weighted average market price of Telcon shares as reported on Korean Securities Dealers Automated Quotations (“KOSDAQ”) Market and in the event of the issuance of Telcon shares or share equivalents at a price below the market price of Telcon shares and to customary antidilution adjustments upon a merger or similar reorganization of Telcon or a stock split, reverse stock split, stock dividend or similar event. The conversion price as of December 31, 2023 is set forth in the “Investment in convertible bond” table below. The convertible bond and any proceeds therefrom, including proceeds from any exercise of the early redemption right described above or the call option described below, are pledged as collateral to secure the Company’s obligations under the revised API Supply Agreement with Telcon described in Note 6, 11 and 12.

Concurrent with the purchase of the convertible bond, the Company entered into an agreement dated September 28, 2020 with Telcon pursuant to which Telcon or its designee is entitled to repurchase, at par, up to 50% of the principal amount of the convertible bond at any time and from time to time commencing October 16, 2021 and prior to maturity.

The investment in convertible bond is classified as an available for sale security and remeasured at fair value on a recurring basis using Level 3 inputs, with any changes in the fair value recorded in other comprehensive loss. The fair value

and any changes in fair value in the convertible bond is determined using a binominal lattice model. The model produces an estimated fair value based on changes in the price of the underlying common stock over successive periods of time.

In February 2022, the Company and Telcon agreed to settle a “target shortfall” under the revised API agreement with Telcon for the years ended 2020 and 2021 by exchanging KRW3.5 billion, or approximately US$2.9 million, principal amount and accrued and unpaid interest of the Telcon convertible bond and KRW400 million, or approximately US$310,000, in cash proceeds of the convertible bond. As a result, the Company realized a net loss on investment convertible bond of $126,000, which previously was classified as unrealized loss on debt securities available-for-sale in the other comprehensive loss, and other income of $41,000.

In April 2023, Telcon offset KRW2.9 billion, or approximately US$2.2 million, against the principal amount of the Telcon convertible bond and release of KRW307 million, or approximately $236,000, in cash proceeds to Telcon in satisfaction the target shortfall for the year ended 2022. The offset is reflected as a sale of the convertible bond in the “Investment in convertible bond” table below. As a result, the Company realized a net gain on investment in convertible bond of $106,000, which previously was classified as unrealized loss on debt securities available-for-sale in the other comprehensive loss. See Notes 6, 11 and 12 for additional information on the “target shortfall.”

Equity method investment – During 2018, the Company and Japan Industrial Partners, Inc., or JIP, formed EJ Holdings Inc., or EJ Holdings, to acquire, own and operate an amino acids manufacturing facility in Ube, Japan. In connection with the formation, the Company invested approximately $32,000 in exchange for 40% of EJ Holdings' capital shares. JIP owned 60% of EJ Holdings' capital shares. In October 2018, the Company entered into a loan agreement with EJ Holdings under which the Company made an unsecured loan to EJ Holdings in the amount of $13.6 million. The loan proceeds were used by EJ Holdings to purchase the Ube facility in December 2019 and pay related taxes. The half of aggregated principal (JPY 1,818,667,860) become due and payable on December 28, 2027 and the remaining principal balance become due on September 30, 2028 and bears interest at the rate of 1% payable annually. The parties also contemplated that the Ube facility will eventually supply the Company with the facility’s output of amino acids, that the operation of the facility would be principally for the Company’s benefit and, as such, that major decisions affecting EJ Holdings and the Ube facility would be made by EJ Holdings’ board of directors, a majority of which are representatives of JIP, in consultation with the Company. During the years ended December 31, 2023 and 2022, the Company made additional loans to EJ Holdings of $2.6 million and $5.3 million, respectively. The Company suspended any further loans to EJ Holdings in September 2023.

EJ Holdings is engaged in seeking to refurbish and phase in the Ube facility with objective of eventually obtaining regulatory clearance for the manufacture of PGLG in accordance with cGMP. EJ Holdings has had no substantial revenues since its inception, has depended on loans from the Company to acquire the Ube facility and fund its operations and will be dependent on loans from other financing unless and until its plant is activated and it can secure customers for its products.

There is no assurance that needed funding will be available from other sources. If EJ Holdings fails to obtain needed funding, it may need to suspend activities at the Ube plant. Under the asset purchase agreement by which EJ Holdings purchased the Ube plant, the seller has the right to repurchase the plant at the purchase price, plus certain taxes, paid by EJ Holdings if the plant does not become operational within a reasonable period of time not to exceed five years, or approximately the end of 2024. In such event, it is likely that EJ Holding would be unable to repay some or all the Company's loans.

The Company determined that EJ Holdings is a variable interest entity, or VIE, based upon its dependence on loan financing provided by the Company to acquire the Ube facility and to carry on EJ Holdings' activities and that the EJ Holdings’ activities, which were principally for the Company’s benefit. JIP, however, owned 60% of EJ Holdings and was entitled to designate a majority of the directors of EJ Holdings as well as its Chief Executive Officer and outside auditors, and, as such, controlled the management, business, and operations of EJ Holdings. Accordingly, the Company accounted for its variable interest in EJ Holdings under the equity method.

The Company’s share of the losses reported by EJ Holdings are classified as net losses on equity method investment.

On December 28, 2023, the Company sold and assigned its EJ Holdings shares at its original cost of JPY3.6 million or US$25,304 to Niihara International, Inc., which was formed by Yutaka Niihara, M.D., Ph. D., former chairman and Chief Executive Officer of the Company and a principal stockholder of the Company. In connection with the sale and assignment, the Company derecognized its investment in EJ Holdings, including $1.5 million of currency translation adjustments recorded in other comprehensive loss. As of December 31, 2023 and 2022, the loan receivable from EJ Holdings was $25.8 million and $25.0 million, respectively. The net loan receivable from EJ Holdings was $16.9 million as reflected in net loan receivable from EJ Holdings as contra-equity on the consolidated balance sheet.