XERS 2021 Annual Report

Form 10-K	1
Summary of the Material Risks Associated with Our Business	2
Table of Contents	3
Cautionary Statements for Forward-Looking Information	4
Part I.	6
Item 1. Business	6
Item 1A. Risk Factors	39
Item 1B. Unresolved Staff Comments	75
Item 2. Properties	75
Item 3. Legal Proceedings	76
Item 4. Mine Safety Disclosures	76
Part II.	76
Item 5. Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities	76
Item 6. Selected Financial Data	76
Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations	77
Item 7A. Quantitative and Qualitative Disclosures About Market Risk	86
Item 8. Financial Statements and Supplementary Data	88
Report of Independent Registered Public Accounting Firm	89
Consolidated Balance Sheets	90
Consolidated Statements of Operations and Comprehensive Loss	91
Consolidated Statements of Stockholders' Equity	92
Consolidated Statements of Cash Flows	93
Notes to Consolidated Financial Statements	94
Item 9. Changes in and Disagreements with Accountants on Accounting and Financial Disclosure	124
Item 9A. Controls and Procedures	124
Item 9B. Other Information	124
Item 9C. Disclosure regarding foreign jurisdictions that prevent inspections	124
Part III.	125
Item 10. Directors, Executive Officers and Corporate Governance	125
Item 11. Executive Compensation	125
Item 12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters	125
Item 13. Certain Relationships and Related Transactions, and Director Independence	125
Item 14. Principal Accountant Fees and Services	125
Part IV.	126
Item 15. Exhibits and Financial Statement Schedules	126
Item 16. Form 10-K Summary	126
Index to Exhibits	127
Signatures	132

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