Amendment to Annual Report Form 10 K/A

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM10-K/A

(Amendment No. 1)

☒ ANNUAL REPORT PURSUANT TO SECTION13 OR 15(d)OF THE SECURITIES EXCHANGE ACT OF 1934

For the fiscalyear ended December 31, 2023.

OR

☐ TRANSITION REPORT PURSUANT TO SECTION13 OR 15(d)OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from ________ to ________.

Commission File Number 1-32639

TG THERAPEUTICS,INC.

(Exact name of registrant as specified in its charter)

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Registrant's telephone number, including area code: (877) 575-8489

Securities registered pursuant to Section12(b)of the Act:

Securities registered pursuant to Section12(g)of the Act: None

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes ☒ No ☐

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. Yes ☐ No ☒

Indicate by check mark whether the registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ☒ No ☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this Chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes ☒ No ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, smaller reporting company, or an emerging growth company. See the definitions of "large accelerated filer," "accelerated filer," "smaller reporting company," and "emerging growth company" in Rule 12b-2 of the Exchange Act.

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If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Indicate by check mark whether the registrant has filed a report on and attestation to its management's assessment of the effectiveness of its internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued its audit report. ☒

If securities are registered pursuant to Section 12(b) of the Act, indicate by check mark whether the financial statements of the registrant included in the filing reflect the correction of an error to previously issued financial statements. ☐

Indicate by check mark whether any of those error corrections are restatements that required a recovery analysis of incentive-based compensation received by any of the registrant's executive officers during the relevant recovery period pursuant to §240.10D-1(b) . ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ☐ No ☒

The aggregate market value of voting common stock held by non-affiliates of the registrant (assuming, for purposes of this calculation, without conceding, that all executive officers and directors are "affiliates") was $3.4 billion as of June 30, 2023, based on the closing sale price of such stock as reported on the NASDAQ Capital Market.

There were 154,420,772 shares of the registrant's common stock, $0.001 par value, outstanding as of February 23, 2024.

DOCUMENTS INCORPORATED BY REFERENCE

Portions of the registrant's Proxy Statement for the 2023 Annual Meeting of Stockholders are incorporated by reference in Part III of this Annual Report on Form 10-K.

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Auditor Name: KPMG LLP Auditor Location: New York, NY Auditor Firm ID: 185​

Explanatory Note

TG Therapeutics, Inc. (the "Company") is filing this Amendment No. 1 on Form 10-K/A (this "Amendment" or "Form 10-K/A") to our Annual Report on Form 10-K for the fiscal year ended December 31, 2023, which was filed with the U.S. Securities and Exchange Commission (the "SEC") on February 29, 2024 (the "Original Form 10-K") to make certain changes as described below.

Background

As previously disclosed in the Company's Form 8-K, which was filed with the SEC on August 6, 2024, the Company recently identified an error related to the expense recognition of a single restricted stock grant in 2021 leading to an understatement of non-cash compensation expense for years ended December 31, 2021 and 2022. The error was deemed to be immaterial to all impacted periods.

Considering the foregoing, management reassessed the effectiveness of the Company's internal control over financial reporting ("ICFR") as of December 31, 2023 based on the framework established in Internal Control - Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission. As a result of that reassessment, management identified that the error was caused by an underlying control deficiency related to non-routine share-based payment awards that represents a material weakness in the Company's ICFR as described below in Item 9A.

Accordingly, the Company concluded that its report regarding the effectiveness of its internal control over financial reporting and the statements within the Evaluation of Disclosure Controls and Procedures regarding their effectiveness included in Item 9A of the Original Form 10-K could no longer be relied upon. As a result, the Company is (a) amending Part II, Item 9A Controls and Procedures in this Form 10-K/A to update its conclusions regarding the effectiveness of its disclosure controls and procedures and its internal control over financial reporting as of December 31, 2023 and (b) including in Part II, Item 8, the amended audit report of KPMG LLP ("KPMG"), the Company's independent registered public accounting firm (Auditor Firm ID: 185), as of December 31, 2023 regarding the Company's internal control over financial reporting.

In accordance with Rule 12b-15 under the Securities Exchange Act of 1934, as amended (the "Exchange Act"), the Company is also including with this Form 10-K/A a currently dated consent of KPMG and certifications of the Company's principal executive officer and principal financial officer (included in Part IV, Item 15. "Exhibits and Financial Statement Schedules" and attached as Exhibits 23.1, 31.1, 31.2 and 32.1). This Form 10-K/A should be read in conjunction with the Original Form 10-K, which continues to speak as of the date of the Original Form 10-K. Except as specifically noted above, this Form 10-K/A does not modify or update disclosures in the Original Form 10-K. Accordingly, this Form 10-K/A does not reflect events occurring after the date of the Original Form 10-K or modify or update any related or other disclosures, other than those discussed above. No other portions of the Original Form 10-K were changed.

ITEM8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA.

In light of the material weakness described above and below, our independent registered public accounting firm has amended their audit reports, which are included below.

Report of Independent Registered Public Accounting Firm

To the Stockholders and Board of Directors
TG Therapeutics, Inc.:

Opinion on theConsolidated Financial Statements

We have audited the accompanying consolidated balance sheets of TG Therapeutics, Inc. and subsidiaries (the Company) as of December 31, 2023 and 2022, the related consolidated statements of operations, stockholders' equity, and cash flows for each of the years in the three-year period ended December 31, 2023, and the related notes (collectively, the consolidated financial statements). In our opinion, the consolidated financial statements present fairly, in all material respects, the financial position of the Company as of December 31, 2023 and 2022, and the results of its operations and its cash flows for each of the years in the three-year period ended December 31, 2023, in conformity with U.S. generally accepted accounting principles.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the Company's internal control over financial reporting as of December 31, 2023, based on criteria established in Internal Control - Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission, and our report dated February 29, 2024, except for the restatement as to the effectiveness of internal control over financial reporting for the material weakness related to share-based payment awards, as to which the date is August 9, 2024, expressed an adverse opinion on the effectiveness of the Company's internal control over financial reporting.

Basis for Opinion

These consolidated financial statements are the responsibility of the Company's management. Our responsibility is to express an opinion on these consolidated financial statements based on our audits. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the consolidated financial statements are free of material misstatement, whether due to error or fraud. Our audits included performing procedures to assess the risks of material misstatement of the consolidated financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the consolidated financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the consolidated financial statements. We believe that our audits provide a reasonable basis for our opinion.

Critical Audit Matter

The critical audit matter communicated below is a matter arising from the current period audit of the consolidated financial statements that was communicated or required to be communicated to the audit committee and that: (1) relates to accounts or disclosures that are material to the consolidated financial statements and (2) involved our especially challenging, subjective, or complex judgments. The communication of a critical audit matter does not alter in any way our opinion on the consolidated financial statements, taken as a whole, and we are not, by communicating the critical audit matter below, providing a separate opinion on the critical audit matter or on the accounts or disclosures to which it relates.

Commercialization agreement with Neuraxpharm

As discussed in Note 2 to the consolidated financial statements, the Company entered into a commercialization agreement (the Commercialization Agreement) with Neuraxpharm Pharmaceuticals, S.L. (Neuraxpharm) that granted Neuraxpharm the exclusive right to commercialize BRIUMVI in certain territories. The arrangement also provides Neuraxpharm with the right to make optional purchases of BRIUMVI. The consideration for these optional purchases of BRIUMVI by Neuraxpharm approximates the price that a customer in the territories would be willing to pay for these goods. In 2023, the Company recognized a non-refundable upfront payment of $140.0 million as License Revenue related to the Commercialization Agreement.

We identified the evaluation of the accounting for the supply terms of the Commercialization Agreement with Neuraxpharm as a critical audit matter. Specifically, complex auditor judgment was required to evaluate the Company's assessment of whether the optional purchases of BRIUMVI granted a material right to Neuraxpharm, due to the complexity of evaluating whether the contractual pricing is commensurate with standalone selling price.

The following are the primary procedures we performed to address this critical audit matter. We evaluated the design and tested the operating effectiveness of an internal control in the Company's revenue process used to evaluate key terms of contracts with customers, including the evaluation of the standalone selling price of BRIUMVI. We obtained an understanding of the Commercialization Agreement by reading the contracts and conducting meetings with Company personnel responsible for negotiating the contracts. We evaluated management's accounting conclusions with respect to the supply terms within the Commercialization Agreement. We recalculated the contractual price of the optional purchases and inspected the Company's analysis of the standalone selling price of BRIUMVI using an expected cost plus a margin approach. We obtained and inspected both external and internal evidence used by the Company in its analysis of the standalone selling price and compared this evidence to available industry information for the relevant territories. We also performed a sensitivity analysis to evaluate the impact that a change in margin would have on the conclusion that the contractual pricing of optional purchases of BRIUMVI is commensurate with standalone selling price.

/s/ KPMG LLP

We have served as the Company's auditor since 2021.

New York, New York

February 29, 2024, except for the restatement as to the effectiveness of internal control over financial reporting for the material weakness related to share-based payment awards, as to which the date is August 9, 2024.

Report of Independent Registered Public Accounting Firm

To the Stockholders and Board of Directors

TG Therapeutics, Inc.:

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Opinion on Internal Control Over Financial Reporting

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We have audited TG Therapeutics, Inc. and subsidiaries' (the Company) internal control over financial reporting as of December 31, 2023, based on criteria established in Internal Control - Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission. In our opinion, because of the effect of the material weakness, described below, on the achievement of the objectives of the control criteria, the Company has not maintained effective internal control over financial reporting as of December 31, 2023, based on criteria established in Internal Control - Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the consolidated balance sheets of the Company as of December 31, 2023 and 2022, the related consolidated statements of operations, stockholders' equity, and cash flows for each of the years in the three-year period ended December 31, 2023, and the related notes (collectively, the consolidated financial statements), and our report dated February 29, 2024, except for the restatement as to the effectiveness of internal control over financial reporting for the material weakness related to share-based payment awards, as to which the date is August 9, 2024, expressed an unqualified opinion on those consolidated financial statements.

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. A material weakness related to share-based payment awards has been identified and included in management's assessment. The material weakness was considered in determining the nature, timing, and extent of audit tests applied in our audit of the 2023 consolidated financial statements, and this report does not affect our report on those consolidated financial statements. ​

Basis for Opinion

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The Company's management is responsible for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of internal control over financial reporting, included in the accompanying Management's Annual Report on Internal Control over Financial Reporting (Restated). Our responsibility is to express an opinion on the Company's internal control over financial reporting based on our audit. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audit in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. Our audit of internal control over financial reporting included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, and testing and evaluating the design and operating effectiveness of internal control based on the assessed risk. Our audit also included performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.

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Definition and Limitations of Internal Control Over Financial Reporting

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A company's internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company's internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company's assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

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/s/ KPMG LLP

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New York, New York
February 29, 2024, except for the restatement as to the effectiveness of internal control over financial reporting for the material weakness related to share-based payment awards, as to which the date is August 9, 2024.

ITEM9A. CONTROLS AND PROCEDURES.

Evaluation of Disclosure Controls and Procedures. As of December 31, 2023, management carried out an evaluation, under the supervision and with the participation of our Chief Executive Officer and our Chief Financial Officer, of the effectiveness of the design and operation of our disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) of the Securities Exchange Act of 1934, as amended (Exchange Act)). Our disclosure controls and procedures are designed to provide reasonable assurance that information we are required to disclose in the reports that we file or submit under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in applicable rules and forms. Based upon that evaluation, our Chief Executive and Chief Financial Officers concluded that, as of December 31, 2023, our disclosure controls and procedures were not effective due to the material weakness in internal control over financial reporting described below under the heading "Management's Annual Report on Internal Control over Financial Reporting (Restated)."

In light of the material weakness described below, management performed additional analyses and other procedures to ensure that our consolidated financial statements were prepared in accordance with U.S. Generally Accepted Accounting Principles ("U.S. GAAP"). Accordingly, management believes that the consolidated financial statements included in the Original Form 10-K fairly present, in all material respects, our financial position, results of operations, and cash flows as of and for the periods presented, in accordance with U.S. GAAP.

Management's Annual Report on Internal Control over Financial Reporting (Restated). Our management is responsible for establishing and maintaining adequate internal control over financial reporting (as defined in Rule 13a-15(f) and Rule 15d-15(f) of the Exchange Act). Our management, with the participation of the Chief Executive Officer and Chief Financial Officer, under the oversight of the Board of Directors, assessed the effectiveness of our internal control over financial reporting as of December 31, 2023. In making this assessment, our management used the criteria established in Internal Control - Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission. Our management has concluded that, as of December 31, 2023, our internal control over financial reporting was not effective because of the material weakness in internal control over financial reporting described 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 our annual or interim financial statements will not be prevented or detected on a timely basis.

The Company identified that a process-level control over share-based payment awards was not designed effectively. This ineffectively designed control was attributable to insufficient risk assessment with regards to non-routine share-based payment awards.

This control deficiency resulted in immaterial misstatements in related accounts. Furthermore, the control deficiency described above created a reasonable possibility that a material misstatement to the consolidated financial statements would not be prevented or detected on a timely basis. Therefore, we concluded that the deficiency represents a material weakness in the Company's internal control over financial reporting and our internal control over financial reporting was not effective as of December 31, 2023.

Our independent registered public accounting firm, KPMG LLP, who audited the consolidated financial statements included in our annual report on Form 10-K for the fiscal year ended December 31, 2023, issued an adverse opinion on the effectiveness of the Company's internal control over financial reporting. KPMG LLP's report appears in Item 8 above.

Management's Plan to Remediate the Identified Material Weakness. The Company will implement enhanced risk assessment procedures to ensure that all non-routine share-based payment awards are appropriately identified and evaluated. Further, the Company will design additional preventative controls around non-routine share-based payment awards to ensure the appropriate recognition and measurement of such awards. Management will report regularly to the audit committee on the progress and results of the remediation plan, including the identification, status, and resolution of internal control deficiencies.

We anticipate that the material weakness will be fully remediated before December 31, 2024, but the material weakness cannot be considered fully remediated until the updated policies and training have been in place and operated for a sufficient period of time to enable management and KPMG LLP to test and to conclude on the operating effectiveness of the controls.

Changes in Internal Control Over Financial Reporting. There were no changes in our internal control over financial reporting (as defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act) during the quarter ended December 31, 2023 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

Inherent Limitations of Internal Controls. Our management, including our Chief Executive Officer and Chief Financial Officer, does not expect that our disclosure controls and procedures or our internal control over financial reporting will prevent all errors and all fraud. A control system, no matter how well conceived and operated, can provide only reasonable, not absolute, assurance that the objectives of the control system are met. Further, the design of a control system must reflect the fact that there are resource constraints, and the benefits of controls must be considered relative to their costs. Because of the inherent limitations in all control systems, no evaluation of controls can provide absolute assurance that all control issues and instances of fraud, if any, within our Company have been detected.

ITEM15. EXHIBITS and FINANCIAL STATEMENT SCHEDULES.

3. Exhibits

The following exhibits are filed herewith or incorporated herein by reference:

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SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.