Form 8-K

8-K — TG THERAPEUTICS, INC.

Accession: 0001437749-26-015013

Filed: 2026-05-06

Period: 2026-05-06

CIK: 0001001316

SIC: 2834 (PHARMACEUTICAL PREPARATIONS)

Item: Results of Operations and Financial Condition

Item: Financial Statements and Exhibits

Documents

8-K — tgtx20260227_8k.htm (Primary)

EX-99.1 — EXHIBIT 99.1 (ex_926557.htm)

XML — IDEA: XBRL DOCUMENT (R1.htm)

8-K — FORM 8-K

8-K (Primary)

Filename: tgtx20260227_8k.htm · Sequence: 1

tgtx20260227_8k.htm

false

0001001316

2026-05-06

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the

Securities Exchange Act of 1934

Date of report (Date of earliest event reported): May 6, 2026

TG Therapeutics, Inc.

(Exact Name of Registrant as Specified in Charter)

Delaware

001-32639

36-3898269

(State or Other Jurisdiction

(Commission File Number)

(IRS Employer Identification No.)

of Incorporation)

3020 Carrington Mill Blvd, Suite 475

Morrisville, North Carolina 27560

(Address of Principal Executive Offices)

(212) 554-4484

(Registrant’s telephone number, including area code)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐

Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐

Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐

Pre-commencement communications pursuant to Rule 14d-2b under the Exchange Act (17 CFR 240.14d-2(b))

☐

Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities filed pursuant to Section 12(b) of the Act:

Title of Class

Trading Symbol(s)

Exchange Name

Common Stock

TGTX

Nasdaq Capital Market

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (17 CFR §230.405) or Rule 12b-2 of the Securities Exchange Act of 1934 (17 CFR §240.12b-2). Emerging growth company ☐

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. ☐

Item 2.02. Results of Operations and Financial Condition.

On May 6, 2026, the Company issued a press release announcing results of operations for the three months ended March 31, 2026. A copy of such press release is being furnished as Exhibit 99.1.

In accordance with General Instruction B.2 of Form 8-K, the information included in Item 2.02 of this Current Report on Form 8-K (including Exhibit 99.1 hereto), shall not be deemed “filed” for the purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference into any filing made by the Company under the Exchange Act or Securities Act of 1933, as amended, except as shall be expressly set forth by specific reference in such a filing.

Item 9.01. Financial Statements and Exhibits.

(d) Exhibits

Exhibit No.

Description

99.1

Press release issued by TG Therapeutics, Inc., dated May 6, 2026.

104

The cover page from this Current Report on Form 8-K formatted in Inline XBRL.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

TG Therapeutics, Inc.

(Registrant)

Date: May 6, 2026

By:

/s/ Sean A. Power

Sean A. Power

Chief Financial Officer

EX-99.1 — EXHIBIT 99.1

EX-99.1

Filename: ex_926557.htm · Sequence: 2

ex_926557.htm

Exhibit 99.1

TG Therapeutics Reports First Quarter 2026 Financial Results and Raises BRIUMVI Revenue Guidance

First quarter 2026 total global revenue of approximately $205 million, including BRIUMVI U.S. net revenue of approximately $195 million

Raises full year 2026 total global revenue target to approximately $925 million and raises full year 2026 BRIUMVI U.S. net product revenue target to $885-900 million

Conference call to be held today, Wednesday, May 6, 2026, at 8:30 AM ET

New York, NY, (May 6, 2026) – TG Therapeutics, Inc. (NASDAQ: TGTX) (the Company or TG Therapeutics) today announced its financial results for the first quarter of 2026, along with recent company developments and provided an update on 2026 financial guidance.

Michael S. Weiss, the Company’s Chairman and Chief Executive Officer, stated, “We are off to a strong start in 2026, with BRIUMVI performance exceeding expectations and momentum continuing to build. Growth is being driven by strong underlying demand, record new patient starts, and consistent commercial execution— reinforcing our belief that we remain early in the adoption curve for BRIUMVI. Based on this performance, we are significantly increasing our full-year U.S. BRIUMVI revenue guidance to $885-900 million and continue to see the brand as having a multi-billion-dollar potential before considering the impact of a subcutaneous BRIUMVI currently under development. With multiple near-term clinical catalysts and ongoing efforts to expand the franchise, we believe BRIUMVI is well-positioned to become a leading therapy in MS and a durable, long-term growth driver for TG.”

Recent Highlights & Developments

BRIUMVI® (ublituximab-xiiy) Commercialization

●

BRIUMVI U.S. net product revenue of $194.8 million for the first quarter 2026, representing approximately 63% quarterly growth over the same period last year

BRIUMVI Data Presentations & Publications

●

Published two articles in medical journals:

March 2026: “Efficacy of Ublituximab in People with Highly Active Relapsing Multiple Sclerosis”, published in Neurology and Therapy, highlighting data from a post hoc pooled analysis of the Phase 3 ULTIMATE I and II studies evaluating BRIUMVI in people with highly active RMS.

February 2026: “Five Years of Ublituximab in Multiple Sclerosis: ULTIMATE I and II Open-Label Extension (OLE) Study”, published in JAMA Neurology, highlighting five-year data from the OLE of the ULTIMATE I and II trials.

Pipeline

●

Completed patient enrollment into the randomized Phase 3 pivotal program evaluating subcutaneous BRIUMVI

●

Completed patient enrollment into the randomized Phase 3 pivotal program to evaluate a consolidated Day 1 and Day 15 dosing regimen for intravenous (IV) BRIUMVI in the ongoing ENHANCE trial

●

Continued enrollment for patients with progressive multiple sclerosis into the ongoing Phase 1 clinical trial evaluating azer-cel for the treatment of autoimmune diseases

Financial Update

●

Secured an additional $500 million in non-dilutive capital from Blue Owl Capital and expanded our second share repurchase program from $100 million to $300 million, of which $200 million is remaining

●

Since the inception of the first share repurchase program in 2024, and as of April 30, 2026, TG has repurchased a total of $200 million of common stock at an average price of $29.28 per share, of which $100 million was completed during the first quarter of 2026

2026 Financial Guidance

●

Raises full year 2026 target total global revenue to approximately $925 million

●

Raises full year 2026 target BRIUMVI U.S. net product revenue to approximately $885 - $900 million (prior guidance of $825-$850 million)

●

Provides second quarter 2026 target BRIUMVI U.S. net product revenue of approximately $220 million

●

Full year 2026 target operating expense, defined as R&D and SG&A, of approximately $350 million excluding non-cash compensation, in addition to approximately $100 million in expenses associated with the subcutaneous BRIUMVI manufacturing costs and secondary manufacturer start-up costs

2026 Development Pipeline Anticipated Milestones

●

Announce topline Phase 3 data for ENHANCE trial combining Day 1 and Day 15 doses of IV BRIUMVI mid-year 2026

●

Present preliminary Phase 1 azer-cel data in Progressive MS in the second half of 2026

●

Announce topline Phase 3 data for subcutaneous BRIUMVI (ublituximab) year-end 2026/first quarter 2027

●

Commence a potentially registration-directed trial for BRIUMVI in Myasthenia Gravis (MG)

●

Commence additional exploratory studies for BRIUMVI and azer-cel in autoimmune disease (outside MS)

Financial Results for First Quarter 2026

●

Product Revenue, net: Product revenue, net was $201.3 million for the three months ended March 31, 2026, compared to $119.7 million for the three months ended March 31, 2025. Product revenue, net consists primarily of net product sales of BRIUMVI in the United States, which totaled $194.8 million during the three months ended March 31, 2026. Also included in product revenue, net for the three months ended March 31, 2026 is sales of BRIUMVI to our ex-U.S. licensing partner, Neuraxpharm, of $6.5 million.

●

License, milestone, royalty and other revenue: License, milestone, royalty and other revenue was approximately $3.6 million for the three months ended March 31, 2026 compared to approximately $1.2 million for the three months ended March 31, 2025. License, milestone, royalty and other revenue for the three months ended March 31, 2026 is predominantly comprised of $2.7 million of royalty revenue recognized under the Commercialization Agreement with Neuraxpharm and $0.9 million of consideration received for development and regulatory activities performed on behalf of Neuraxpharm in accordance with the Commercialization Agreement.

●

R&D Expenses: Total research and development (R&D) expense was approximately $48.4 million for the three months ended March 31, 2026, compared to $46.4 million for the three months ended March 31, 2025. The increase in R&D expense during the three months ended March 31, 2026 was primarily attributable to license and milestone expense pertaining to our license agreement with Precision BioSciences, Inc., as well as increased clinical trial related expenses and increased personnel costs during the period ended March 31, 2026. These increases were partially offset by lower manufacturing and development costs in connection with our subcutaneous ublituximab development work incurred during the period ended March 31, 2026.

●

SG&A Expenses: Total selling, general and administrative (SG&A) expense was approximately $88.2 million for the three months ended March 31, 2026, compared to $50.3 million for the three months ended March 31, 2025. The increase in selling, general and administrative costs during the three months ended March 31, 2026 was primarily due to an increase in marketing and media spend, and personnel and external costs associated with the commercialization of BRIUMVI.

●

Net income: Net income was $19.8 million for the three months ended March 31, 2026, compared to net income of $5.1 million for the three months ended March 31, 2025.

●

Cash Position and Financial Guidance: Cash, cash equivalents and investment securities were $572.8 million as of March 31, 2026. We anticipate that our cash, cash equivalents and investment securities as of March 31, 2026, combined with the projected revenues from BRIUMVI, will be sufficient to fund our business based on our current operating plan.

CONFERENCE CALL INFORMATION

The Company will host a conference call today, May 6, 2026, at 8:30 AM ET, to discuss the Company’s financial results from first quarter of 2026.

To participate in the conference call, please call 1-877-407-8029 (U.S.), 1-201-689-8029 (outside the U.S.), Conference Title: TG Therapeutics. A live audio webcast will be available on the Events page, located within the Investors & Media section, of the Company's website at http://ir.tgtherapeutics.com/events. An audio recording of the conference call will also be available for a period of 30 days after the call.

ABOUT BRIUMVI® (ublituximab-xiiy) 150 mg/6 mL Injection for IV

BRIUMVI is a novel monoclonal antibody that targets a unique epitope on CD20-expressing B-cells. Targeting CD20 using monoclonal antibodies has proven to be an important therapeutic approach for the management of autoimmune disorders, such as RMS. BRIUMVI is uniquely designed to lack certain sugar molecules normally expressed on the antibody. Removal of these sugar molecules, a process called glycoengineering, allows for efficient B-cell depletion at low doses.

BRIUMVI is indicated in the U.S. for the treatment of adults with RMS, including clinically isolated syndrome, relapsing-remitting disease, and active secondary progressive disease and in several countries outside of the U.S. for the treatment of adult patients with RMS with active disease defined by clinical or imaging features.

A list of authorized specialty distributors can be found at www.briumvi.com.

IMPORTANT SAFETY INFORMATION

Contraindications: BRIUMVI is contraindicated in patients with:

●

Active Hepatitis B Virus infection

●

A history of life-threatening infusion reaction to BRIUMVI

WARNINGS AND PRECAUTIONS

Infusion Reactions: BRIUMVI can cause infusion reactions, which can include pyrexia, chills, headache, influenza-like illness, tachycardia, nausea, throat irritation, erythema, and an anaphylactic reaction. In MS clinical trials, the incidence of infusion reactions in BRIUMVI-treated patients who received infusion reaction-limiting premedication prior to each infusion was 48%, with the highest incidence within 24 hours of the first infusion. 0.6% of BRIUMVI-treated patients experienced infusion reactions that were serious, some requiring hospitalization.

Observe treated patients for infusion reactions during the infusion and for at least one hour after the completion of the first two infusions unless infusion reaction and/or hypersensitivity has been observed in association with the current or any prior infusion. Inform patients that infusion reactions can occur up to 24 hours after the infusion. Administer the recommended pre-medication to reduce the frequency and severity of infusion reactions. If life-threatening, stop the infusion immediately, permanently discontinue BRIUMVI, and administer appropriate supportive treatment. Less severe infusion reactions may involve temporarily stopping the infusion, reducing the infusion rate, and/or administering symptomatic treatment.

Infections: Serious, life-threatening or fatal, bacterial and viral infections have been reported in BRIUMVI-treated patients. In MS clinical trials, the overall rate of infections in BRIUMVI-treated patients was 56% compared to 54% in teriflunomide-treated patients. The rate of serious infections was 5% compared to 3% respectively. There were 3 infection-related deaths in BRIUMVI-treated patients. The most common infections in BRIUMVI-treated patients included upper respiratory tract infection (45%) and urinary tract infection (10%). Delay BRIUMVI administration in patients with an active infection until the infection is resolved.

Consider the potential for increased immunosuppressive effects when initiating BRIUMVI after immunosuppressive therapy or initiating an immunosuppressive therapy after BRIUMVI.

Hepatitis B Virus (HBV) Reactivation: HBV reactivation occurred in an MS patient treated with BRIUMVI in clinical trials. Fulminant hepatitis, hepatic failure, and death caused by HBV reactivation have occurred in patients treated with anti-CD20 antibodies. Perform HBV screening in all patients before initiation of treatment with BRIUMVI. Do not start treatment with BRIUMVI in patients with active HBV confirmed by positive results for HB surface antigen (HBsAg) and anti-HB tests. For patients who are negative for HBsAg and positive for HB core antibody [HBcAb+] or are carriers of HBV [HBsAg+], consult a liver disease expert before starting and during treatment.

Progressive Multifocal Leukoencephalopathy (PML): PML is an opportunistic viral infection of the brain caused by the JC virus (JCV) that typically only occurs in patients who are immunocompromised, and that usually leads to death or severe disability. JCV infection resulting in PML has been observed in patients treated with anti-CD20 antibodies, including BRIUMVI, and other MS therapies.

If PML is suspected, withhold BRIUMVI and perform an appropriate diagnostic evaluation. Typical symptoms associated with PML are diverse, progress over days to weeks, and include progressive weakness on one side of the body or clumsiness of limbs, disturbance of vision, and changes in thinking, memory, and orientation leading to confusion and personality changes.

MRI findings may be apparent before clinical signs or symptoms; monitoring for signs consistent with PML may be useful. Further investigate suspicious findings to allow for an early diagnosis of PML, if present. Following discontinuation of another MS medication associated with PML, lower PML-related mortality and morbidity have been reported in patients who were initially asymptomatic at diagnosis compared to patients who had characteristic clinical signs and symptoms at diagnosis.

If PML is confirmed, treatment with BRIUMVI should be discontinued.

Vaccinations: Administer all immunizations according to immunization guidelines: for live or live-attenuated vaccines, at least 4 weeks and, whenever possible, at least 2 weeks prior to initiation of BRIUMVI for non-live vaccines. BRIUMVI may interfere with the effectiveness of non-live vaccines. The safety of immunization with live or live-attenuated vaccines during or following administration of BRIUMVI has not been studied. Vaccination with live virus vaccines is not recommended during treatment and until B-cell repletion.

Vaccination of Infants Born to Mothers Treated with BRIUMVI During Pregnancy: In infants of mothers exposed to BRIUMVI during pregnancy, assess B-cell counts prior to administration of live or live-attenuated vaccines as measured by CD19+ B-cells. Depletion of B-cells in these infants may increase the risks from live or live-attenuated vaccines. Inactivated or non-live vaccines may be administered prior to B-cell recovery. Assessment of vaccine immune responses, including consultation with a qualified specialist, should be considered to determine whether a protective immune response was mounted.

Fetal Risk: Based on data from animal studies, BRIUMVI may cause fetal harm when administered to a pregnant woman. Transient peripheral B-cell depletion and lymphocytopenia have been reported in infants born to mothers exposed to other anti-CD20 B-cell depleting antibodies during pregnancy. Advise females of reproductive potential to use effective contraception during BRIUMVI treatment and for 6 months after the last dose.

Reduction in Immunoglobulins: As expected with any B-cell depleting therapy, decreased immunoglobulin levels were observed. Decrease in immunoglobulin M (IgM) was reported in 0.6% of BRIUMVI-treated patients compared to none of the patients treated with teriflunomide in RMS clinical trials. Monitor the levels of quantitative serum immunoglobulins during treatment, especially in patients with opportunistic or recurrent infections, and after discontinuation of therapy, until B-cell repletion. Consider discontinuing BRIUMVI therapy if a patient with low immunoglobulins develops a serious opportunistic infection or recurrent infections, or if prolonged hypogammaglobulinemia requires treatment with intravenous immunoglobulins.

Liver Injury: Clinically significant liver injury, without findings of viral hepatitis, has been reported in the postmarketing setting in patients treated with anti-CD20 B-cell depleting therapies approved for the treatment of MS, including BRIUMVI. Signs of liver injury, including markedly elevated serum hepatic enzymes with elevated total bilirubin, have occurred from weeks to months after administration.

Patients treated with BRIUMVI found to have an alanine aminotransaminase (ALT) or aspartate aminotransferase (AST) greater than 3x the upper limit of normal (ULN) with serum total bilirubin greater than 2x ULN are potentially at risk for severe drug-induced liver injury.

Obtain liver function tests prior to initiating treatment with BRIUMVI, and monitor for signs and symptoms of any hepatic injury during treatment. Measure serum aminotransferases, alkaline phosphatase, and bilirubin levels promptly in patients who report symptoms that may indicate liver injury, including new or worsening fatigue, anorexia, nausea, vomiting, right upper abdominal discomfort, dark urine, or jaundice. If liver injury is present and an alternative etiology is not identified, discontinue BRIUMVI.

Most Common Adverse Reactions: The most common adverse reactions in RMS trials (incidence of at least 10%) were infusion reactions and upper respiratory tract infections.

Physicians, pharmacists, or other healthcare professionals with questions about BRIUMVI should visit www.briumvi.com.

ABOUT BRIUMVI PATIENT SUPPORT in the U.S.

BRIUMVI Patient Support is a flexible program designed by TG Therapeutics to support U.S. patients through their treatment journey in a way that works best for them. More information about the BRIUMVI Patient Support program can be accessed at www.briumvipatientsupport.com.

ABOUT MULTIPLE SCLEROSIS

Relapsing multiple sclerosis (RMS) is a chronic demyelinating disease of the central nervous system (CNS) and includes people with relapsing-remitting multiple sclerosis (RRMS) and people with secondary progressive multiple sclerosis (SPMS) who continue to experience relapses. RRMS is the most common form of multiple sclerosis (MS) and is characterized by episodes of new or worsening signs or symptoms (relapses) followed by periods of recovery. It is estimated that nearly 1 million people are living with MS in the United States and approximately 85% are initially diagnosed with RRMS.1,2 The majority of people who are diagnosed with RRMS will eventually transition to SPMS, in which they experience steadily worsening disability over time. Worldwide, more than 2.3 million people have a diagnosis of MS.1

ABOUT TG THERAPEUTICS

TG Therapeutics is a fully integrated, commercial stage, biotechnology company focused on the acquisition, development and commercialization of novel treatments for B-cell diseases. In addition to a research pipeline, TG Therapeutics has received approval from the U.S. Food and Drug Administration (FDA) for BRIUMVI® (ublituximab-xiiy) to treat adult patients with relapsing forms of multiple sclerosis (RMS), including clinically isolated syndrome, relapsing-remitting disease, and active secondary progressive disease, as well as approval from several regulatory agencies outside of the U.S. for BRIUMVI to treat adult patients with RMS who have active disease defined by clinical or imaging features. For more information, visit www.tgtherapeutics.com, and follow us on X (formerly Twitter) @TGTherapeutics and on LinkedIn.

BRIUMVI® is a registered trademark of TG Therapeutics, Inc.

Cautionary Statement

This press release contains forward-looking statements that involve a number of risks and uncertainties. All statements contained in this press release other than statements of historical facts, including statements regarding our future results of operations and financial position, our strategic and financial initiatives, our business strategy, and objectives for future operations may constitute forward-looking statements. For those statements, we claim the protection of the safe harbor for forward-looking statements contained in the Private Securities Litigation Reform Act of 1995.

Any forward-looking statements in this press release are based on management's current expectations and beliefs and are subject to a number of risks, uncertainties and important factors that may cause actual events or results to differ materially from those expressed or implied by any forward-looking statements contained in this press release. In addition to the risk factors identified from time to time in our reports filed with the U.S. Securities and Exchange Commission (SEC), factors that could cause our actual results to differ materially include the below.

Such forward looking statements include but are not limited to statements regarding our plans, business strategies and operations related to the commercialization of BRIUMVI® (ublituximab-xiiy) for RMS in the United States, or any jurisdictions outside of the United States; anticipated healthcare professional (HCP) and patient acceptance and use of BRIUMVI for the approved indications; expectations of future revenue for BRIUMVI, or TG expenses or profit estimates or targets; our ability to execute our share repurchase program; expectations and timing for our clinical trials of subcutaneous ublituximab (the active ingredient in BRIUMVI), and sometimes referred to as subcutaneous BRIUMVI; expectations and timing for our ENHANCE Phase 3 pivotal program to evaluate a consolidated day 1 and day 15 dosing regimen for IV BRIUMVI; and expectations and timing for any of our pipeline products or programs, including Azer-cel or BRIUMVI in MG.

Additional factors that could cause our actual results to differ materially include the following: the Company’s ability to continue to commercialize BRIUMVI; the risk that trends in prescriptions are not maintained or that prescriptions are not filled; the failure to obtain and maintain payor coverage; the risk that HCP interest in BRIUMVI will not be sustained; the risk that momentum in sales for BRIUMVI will not be sustained during the course of the year; the risk that the commercialization of BRIUMVI does not continue to exceed expectations; the risk that our BRIUMVI revenue targets will not be achieved; the failure to obtain and maintain requisite regulatory approvals, including the risk that the Company fails to satisfy post-approval regulatory requirements, the potential for variations from the Company’s projections and estimates about the potential market for BRIUMVI due to a number of factors, including, further limitations that regulators may impose on the required labeling for BRIUMVI (such as modifications, resulting from safety signals that arise in the post-marketing setting or in the long-term extension study from the ULTIMATE I and II clinical trials); the Company’s ability to meet post-approval compliance obligations (on topics including but not limited to product quality, product distribution and supply chain, pharmacovigilance, and sales and marketing); the Company’s reliance on third parties for manufacturing, distribution and supply, and other support functions for our clinical and commercial products, including BRIUMVI, and the ability of the Company and its manufacturers and suppliers to produce and deliver BRIUMVI to meet the market demand for BRIUMVI; the risk that any individual patient’s clinical experience in the post-marketing setting, or the aggregate patient experience in the post-marketing setting, may differ from that demonstrated in controlled clinical trials such as ULTIMATE I and II; the risk that the Company does not achieve its 2026 development pipeline anticipated milestones or goals in the timeframe projected or at all, including (i) completing a pivotal program for subcutaneous ublituximab, (ii) completing a pivotal program based on data from the ENHANCE trial to consolidate day 1 and day 15 dosing, (iii) enrolling patients into a trial evaluating BRIUMVI in MG, or (iv) enrolling patients into a trial evaluating azer-cel; the risk that clinical trial data readouts may be delayed due to a number of factors including enrollment, data collection, data maturity or other factors; the risk that the subcutaneous Phase 3 program will not be successful or if successful still will not be approved by the FDA or achieve commercial acceptance; the risk that, if subcutaneous BRIUMV is approved, the anticipated expansion of the addressable market will not be realized; the risk that the ENHANCE Phase 3 trial will not be successful or if successful will not be approved by the FDA or achieve commercial acceptance; the risk that we will not move forward with the development of BRIUMVI in MG or schizophrenia and azer-cel in progressive MS following preliminary studies; the uncertainties generally inherent in research and development and early stage exploratory programs; the risk that the collaboration with Christina Applegate is not able to be implemented or does not go as planned for regulatory or other reasons; the risk that the www.nextinms.com platform does not gain traction or ceases to exist; regulatory developments, legislative actions, executive orders, including the imposition of tariffs and policy changes in the U.S. and other jurisdictions; and general political, economic and business conditions. Further discussion about these and other risks and uncertainties can be found in our Annual Report on Form 10-K for the fiscal year ended December 31, 2025 and in our other filings with the SEC.

Any forward-looking statements set forth in this press release speak only as of the date of this press release. We do not undertake to update any of these forward-looking statements to reflect events or circumstances that occur after the date hereof. This press release and prior releases are available at www.tgtherapeutics.com. The information found on our website is not incorporated by reference into this press release and is included for reference purposes only.

CONTACT:

Investor Relations

Email: ir@tgtxinc.com

Telephone: 1.877.575.TGTX (8489), Option 4

Media Relations:

Email: media@tgtxinc.com

Telephone: 1.877.575.TGTX (8489), Option 6

1. MS Prevalence. National Multiple Sclerosis Society website. https://www.nationalmssociety.org/About-the-Society/MS-Prevalence. Accessed October 26, 2020. 2. Multiple Sclerosis International Federation, 2013 via Data monitor p. 236.

TG Therapeutics, Inc.

Selected Condensed Consolidated Financial Data

Statements of Operations Information (in thousands, except share and per share amounts; unaudited):

Three months ended March 31,

2026

2025

Revenue:

Product revenue, net

201,308

119,655

License, milestone, royalty and other revenue

3,610

1,201

Total revenue

204,918

120,856

Costs and expenses:

Cost of revenue

33,510

15,541

Research and development:

Stock-based compensation

4,875

3,331

Other research and development

43,521

43,031

Total research and development

48,396

46,362

Selling, general and administrative:

Stock-based compensation

15,075

11,640

Other selling, general and administrative

73,142

38,691

Total selling, general and administrative

88,217

50,331

Total costs and expenses

170,123

112,234

Operating income

34,795

8,622

Other expense (income):

Interest expense

7,666

6,757

Loss on extinguishment of debt

9,153

—

Other income

(2,387

)

(3,603

)

Total other expense, net

14,432

3,154

Net income before taxes

20,363

5,468

Income tax expense

(586

)

(408

)

Net income

19,777

5,060

Net income per common share:

Basic

0.14

0.03

Diluted

0.12

0.03

Weighted-average shares of common stock outstanding

Basic

144,439,370

146,677,783

Diluted

160,062,326

162,769,202

Condensed Balance Sheet Information (in thousands):

March 31, 2026

(Unaudited)

December 31,

2025*

Cash, cash equivalents and investment securities

572,835

199,511

Total assets

1,528,837

1,063,253

Total equity

583,131

648,020

* Condensed from audited financial statements

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dei_DocumentPeriodEndDate

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xbrli:dateItemType

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Period Type:

duration

- Definition

The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word 'Other'.

+ References

No definition available.

+ Details

Name:

dei_DocumentType

Namespace Prefix:

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Data Type:

dei:submissionTypeItemType

Balance Type:

Period Type:

duration

- Definition

Address Line 1 such as Attn, Building Name, Street Name

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Namespace Prefix:

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Balance Type:

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- Definition

Address Line 2 such as Street or Suite number

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Namespace Prefix:

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- Definition

Name of the City or Town

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Balance Type:

Period Type:

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- Definition

Code for the postal or zip code

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Namespace Prefix:

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- Definition

Name of the state or province.

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No definition available.

+ Details

Name:

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Namespace Prefix:

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Data Type:

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- Definition

A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

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Namespace Prefix:

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Period Type:

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- Definition

Indicate if registrant meets the emerging growth company criteria.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

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Name:

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- Definition

Commission file number. The field allows up to 17 characters. The prefix may contain 1-3 digits, the sequence number may contain 1-8 digits, the optional suffix may contain 1-4 characters, and the fields are separated with a hyphen.

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No definition available.

+ Details

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Namespace Prefix:

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- Definition

Two-character EDGAR code representing the state or country of incorporation.

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No definition available.

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Namespace Prefix:

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Data Type:

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- Definition

The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

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- Definition

The Tax Identification Number (TIN), also known as an Employer Identification Number (EIN), is a unique 9-digit value assigned by the IRS.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

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- Definition

Local phone number for entity.

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No definition available.

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Name:

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- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 13e

-Subsection 4c

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Namespace Prefix:

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Balance Type:

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- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 14d

-Subsection 2b

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Namespace Prefix:

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- Definition

Title of a 12(b) registered security.

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-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b

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- Definition

Name of the Exchange on which a security is registered.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection d1-1

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Name:

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Namespace Prefix:

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Data Type:

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Balance Type:

Period Type:

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- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as soliciting material pursuant to Rule 14a-12 under the Exchange Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 14a

-Subsection 12

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Name:

dei_SolicitingMaterial

Namespace Prefix:

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Data Type:

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Balance Type:

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- Definition

Trading symbol of an instrument as listed on an exchange.

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No definition available.

+ Details

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Balance Type:

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- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as written communications pursuant to Rule 425 under the Securities Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Securities Act

-Number 230

-Section 425

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