Xencor Inc

Disclosure Controls and Procedures

As required by Rule 13a-15(b) and Rule 15d-15(b) of the Exchange Act, our management, with the supervision of our Chief Executive Officer and Chief Financial Officer (our principal executive officer and principal financial officer, respectively), evaluated the effectiveness of the design and operation of our disclosure controls and procedures (as defined in Exchange Act Rule 13a-15(b) and 15d-15(e)) as of March 31, 2024. Our disclosure controls and procedures are designed to provide reasonable assurance that the information required to be disclosed in this Quarterly Report on Form 10-Q has been appropriately recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission's rules and forms, and that such information is accumulated and communicated to our management, including our principal executive and principal financial officers, to allow timely decisions regarding required disclosure.

Our management recognizes that any controls and procedures, no matter how well designed and operated, can provide only reasonable, not absolute assurance, that the objectives of the control system are met. Because of the inherent limitations in all control systems, no evaluation of controls can provide absolute assurance that all control issues, if any, within a company have been detected. Based on the evaluation of our disclosure controls and procedures as of March 31, 2024, our principal executive and principal financial officers have concluded that our disclosure controls and procedures were not effective due to a material weakness in our internal control over financial reporting as discussed below.

A material weakness is a deficiency, or a combination of deficiencies, in internal control over financial reporting, such that there is a reasonable possibility that a material misstatement of the Company's annual or interim financial statements will not be prevented or detected on a timely basis. Based on our assessment as of March 31, 2024, management concluded that our internal control over financial reporting was not effective due to a material weakness related to the design and operating deficiencies in the impairment analysis of our equity investment in Zenas specifically related to securities without a readily determinable fair value. Due to the material weakness described herein, management completed additional procedures prior to filing this Quarterly Report.

Notwithstanding this material weakness and after completion of additional procedures prior to the filing of this Quarterly Report, our management, including our chief executive officer and chief financial officer, has concluded that our financial statements in this Quarterly Report represent fairly, in all material respects, our financial position, results of operations and cash flows for the periods presented in accordance with accounting principles generally accepted in the United States of America. The material weakness did not result in any restatements of consolidated financial statements previously reported by us, nor were there any changes to previously released financial results.

Management’s Plan for Remediation of Material Weakness

As management is responsible for maintaining effective internal control over financial reporting, and for its assessment of the effectiveness of internal control over financial reporting, we understand the importance of developing a resolution plan aligned with management and overseen by the Audit Committee of our Board of Directors. Since the material weakness was identified, management has been implementing and continues to implement measures designed to ensure that control deficiencies contributing to the material weakness are remediated, such that these controls are designed, implemented, and operating effectively. Our plan includes the following: (1) expand management’s oversight of the impairment analysis of its equity investments in securities without a readily determinable fair value, (2) continue to implement improved processes and controls for documenting the impairment valuation process of securities without a readily determinable fair value, (3) engage external resources when required to assist with the assessment of valuation methodologies for securities without a readily determinable fair value and (4) continue to formalize and communicate policies related to the evaluation of early indicators of impairment of securities without a readily determinable fair value.

We recognize that the material weaknesses in our internal control over financial reporting will not be considered remediated until the remediated controls operate for a sufficient period of time and can be tested and concluded by management to be designed and operating effectively. We continue to evaluate and work to improve our internal control over financial reporting related to the identified material weaknesses and management may determine to take additional measures to address control deficiencies or determine to modify the remediation plan described above. In addition, we report the progress and status of the above remediation efforts to the Audit Committee on a periodic basis.

Changes in Internal Control

Other than the remediation actions described above, there were no changes in our internal control over financial reporting that occurred during the three months ended March 31, 2024 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.