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Investments in Non-Marketable Securities | 9 Months Ended
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Sep. 30, 2023
Investments, Debt and Equity Securities [Abstract] |
Investments in Non-Marketable Securities | Investments in Non-Marketable Securities Non-Marketable Equity Securities In March 2023, we purchased an additional 985,545 shares of Series B preferred stock for $0.8 million in Molecular Assemblies, Inc. (“MAI”), a privately held life sciences company. As of September 30, 2023, we held an aggregate of 19,277,914 shares of MAI's Series A and B preferred stock that we have earned or purchased from MAI. See Note 11 “Related Party Transactions” for additional information on our investment in MAI. In March 2022, we entered into a Stock Purchase Agreement with seqWell, Inc. (“seqWell”), a privately held life sciences company, pursuant to which we purchased 1,000,000 shares of seqWell's Series C preferred stock for $5.0 million. In March 2023, we entered into a Master Collaboration Agreement and Research Agreement with seqWell (the “seqWell Agreement”), pursuant to which we are providing research and experimental screening and protein engineering activities in exchange for compensation in the form of additional shares of seqWell's common stock. In addition to our initial equity investment and the shares we have received under the seqWell Agreement, in September 2023, we purchased an additional 88,256 shares of seqWell's Series C-1 preferred stock and 44,128 common stock warrants for $0.4 million. We received 65,982 and 179,897 shares of seqWell's common stock from research and development services with seqWell and we recognized $69 thousand and $187 thousand in research and development revenue from these services during the three and nine months ended September 30, 2023, respectively. We own 207,070 shares of Series B-2 preferred stock of Arzeda Corp. (“Arzeda”), an early-stage computational protein design company. Our non-marketable equity securities are investments in privately held companies without readily determinable market value and primarily relate to our investments in MAI, seqWell and Arzeda. These investments are accounted for under the measurement alternative and are measured at cost minus impairment, if any, plus or minus changes resulting from observable price changes for identical or similar securities of the same issuer. Non-marketable equity securities are measured at fair value on a non-recurring basis and classified within Level 2 in the fair value hierarchy when we estimate the fair value of these investments using the observable transaction price paid by third party investors for the same or similar security of the same issuers. The fair value of non-marketable equity securities are classified within Level 3 when we estimate fair value using unobservable inputs such as when we remeasure due to impairment and we use discount rates, market data of comparable companies, and rights and obligations of the securities the Company holds, among others. We adjust the carrying value of non-marketable equity securities which have been remeasured during the period and recognize resulting gains or losses as a component of other expense, net in the unaudited condensed consolidated statements of operations. For the three months ended September 30, 2023, we recognized an impairment charge of $3.9 million and included this as adjustment to the carrying value of our investments in seqWell and Arzeda. This adjustment, which is presented within other income (expense), net in the condensed consolidated statements of operations, is related to the write-down of the carrying value of our investments in seqWell by $3.0 million and in Arzeda by $0.9 million to its estimated fair values as determined based on valuation methods using the recent transaction price of similar preferred stock securities issued by the investees and adjusted for the rights and obligations of the preferred stock securities the Company holds. For the three months ended September 30, 2022, we recognized a $0.2 million unrealized gain and included as adjustment to the carrying value of our investment in MAI, for the remeasurement of the additional 1,587,049 shares of Series B preferred stock received as milestone payment during the three months ended September 30, 2022 based on the latest observed transaction price of MAI's preferred stock. There was no remeasurement event for our investments in other non-marketable equity securities that occurred during the three and nine months ended September 30, 2023 and 2022. We recognize d no realized gains or losses during the three and nine months ended September 30, 2023 and 2022. The following table presents the carrying value of our non-marketable equity securities (in thousands):
| September 30, 2023 |  | December 31, 2022
MAI | $ | 14,671 |  |  | $ | 13,921 |
seqWell | 2,598 |  |  | 5,000 |
Arzeda | 444 |  |  | 1,289 |
Other investments in non-marketable equity securities | 300 |  |  | 300 |
Total non-marketable equity securities | $ | 18,013 |  |  | $ | 20,510 |

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- Definition The entire disclosure for cash, cash equivalents, investments in debt and equity instruments (including cost and equity investees and related income statement amounts), equity and cost method investments, investments in joint ventures and any other investment. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 65 -Paragraph 13 -Subparagraph (d)(3) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482477/820-10-65-13 + Details
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