On March 12, 2026 IN8bio, Inc. (Nasdaq: INAB), a clinical-stage biopharmaceutical company developing innovative gamma-delta ("γδ") T cell therapies and γδ T cell engagers for cancer and autoimmune diseases, reported financial results and business highlights for the fourth quarter and full-year ended December 31, 2025.

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"In 2025, we delivered meaningful progress financially and across our clinical γδ T cell therapy programs and our next-generation T cell engager platform," said William Ho, co-founder and Chief Executive Officer of IN8bio. "Our deep knowledge of γδ T cell biology and their powerful immune properties enables us to create potential first-in-class or best-in-class programs to address significant unmet medical needs. Last year, we reported updated survival data from our INB-200 and 400 Phase 1 and 2 programs in GBM, along with data from a contemporaneously enrolled standard-of-care ("SOC") control group. Patients treated with our DeltEx DRI γδ T cells nearly doubled the mPFS, compared to the SOC group, despite a higher number of patients receiving only partial resections. These findings underscore the aggressive nature of GBM, even with SOC treatment, and highlight the significant need for new treatment options. Importantly, our recent financing strengthens our balance sheet and is expected to extend our cash runway to allow us to advance multiple high-value programs. With differentiated science, advancing clinical programs, and a novel TCE platform, we believe IN8bio is well positioned to achieve key milestones and deliver value to shareholders and patients in 2026."

Key Highlights

Strengthened Balance Sheet with up to $40.2 Million Private Placement

In December 2025, IN8bio announced a private placement of up to $40.2 million in gross proceeds, including $20.1 million in an initial closing and the potential for an additional milestone-based $20.1 million.

Financing led by Coastlands Capital, with participation from new and existing investors.
Net proceeds of $18.5 million expected to extend the Company’s cash runway into the first half of 2027.
Proceeds intended to support IND-enabling studies for INB-619 γδ TCE, further discussions with the FDA on potential clinical pathways for the GBM program, continued advancement of the Company’s γδ T cell therapy programs, and general corporate purposes.
Presented Updated Clinical Data Demonstrating Durable Survival Improvements in Newly Diagnosed Glioblastoma

In January 2026, IN8bio reported updated data from its INB-200 Phase 1 and INB-400 Phase 2 trials evaluating DeltEx DRI γδ T cells in newly diagnosed GBM. The data included a contemporaneous SOC control group from multiple clinical sites.

mPFS for repeat dose DeltEx DRI patients was 13.0 months vs. 6.6 months for SOC control cohort (+97% improvement).
Median overall survival ("mOS") in repeat dose patients had not yet been reached at 17.2+ months, surpassing the 13.2-month final mOS for SOC control arm.
Several patients remained progression-free beyond two years, and one grade 4 glioma patient remains progression-free for greater than 4.5 years, highlighting the long-term benefit of INB-200.
No dose-limiting toxicities ("DLTs"), cytokine release syndrome ("CRS"), neurotoxicity ("ICANS"), tumor inflammation-associated neurotoxicity ("TIAN") or other unexpected severe adverse events were observed.
Results reinforce the potential of repeat-dose γδ T cell therapy to meaningfully improve outcomes in newly diagnosed glioblastoma and support continued regulatory engagement regarding potential clinical pathways.
Continued Advancing Next-Generation Gamma-Delta T Cell Engager Platform

Continued advancing INB-600 platform, featuring novel γδ T cell engagers designed to potentially improve durability and safety compared with traditional CD3-targeting engagers.
Progressing INB-619, a CD19-targeting γδ T cell engager for potential use in oncology and autoimmune diseases into IND-enabling studies with initial animal data expected in 2026.
Presented encouraging preclinical data including complete B-cell depletion, robust γδ T cell expansion, and minimal CRS-associated cytokine release at The American College of Rheumatology ("ACR") Convergence 2025 meeting, supporting differentiation of the platform.
Leadership Update

In February 2026, IN8bio announced the promotion of Kate Rochlin, Ph.D., to President and Chief Operating Officer. Dr. Rochlin has played a central role in advancing the Company’s clinical and preclinical programs, manufacturing capabilities, and strategic execution, and will continue overseeing company operations as IN8bio advances its pipeline and prepares for its next phase of growth.

Anticipated Milestones

Guidance from the FDA on potential regulatory pathway by the second half of 2026
Additional clinical updates on our GBM programs, including final mOS data from the total data set, at medical meetings in mid- and late-2026
Initial preclinical animal data and additional IND-enabling data for INB-619 expected in the second half of 2026
Completion of patient dosing in INB-100 in early 2026 and report long-term follow-up results at a medical meeting in late 2026
Fourth Quarter and Full Year 2025 Financial Highlights

IN8bio significantly improved its financial profile in 2025, reducing its full-year net loss by 36% year-over-year and ending the year with more than double the cash on hand compared to the prior year.

Cash position: As of December 31, 2025, the Company had cash of $27.1 million, compared with $11.1 million as of December 31, 2024.
Research and Development (R&D) expenses: R&D expenses were $2.6 million for the three months ended December 31, 2025, compared with $3.6 million for the comparable prior year period. R&D expenses were $10.2 million for the year ended December 31, 2025, compared with $17.0 million in the prior year. Non-cash stock-based compensation expense included in R&D expense was $1.2 million for the full year 2025 and $0.3 million for the fourth quarter of 2025.
General and administrative (G&A) expenses: G&A expenses were $2.4 million for the three months ended December 31, 2025, compared with $2.6 million for the comparable prior year period. G&A expenses were $9.7 million for the year ended December 31, 2025, compared with $12.6 million in the prior year. Non-cash stock-based compensation expense included in G&A expense was $2.0 million for the full year 2025 and $0.4 million for the fourth quarter of 2025.
Severance and related charges: Severance and related charges were nil for the year ended December 31, 2025, compared with $1.1 million in the prior year.
Net loss: The Company reported a net loss of $4.9 million, or $0.45 per basic and diluted common share, for the three months ended December 31, 2025, compared with a net loss of $6.2 million, or $2.38 per basic and diluted common share, for the comparable prior year period. For the year ended December 31, 2025, net loss was $19.4 million, or $4.44 per basic and diluted common share, compared with a net loss of $30.4 million, or $17.05 per basic and diluted common share, for the prior year.
IN8bio enters 2026 with a strengthened balance sheet, advancing clinical programs, and multiple regulatory milestones ahead. The Company remains focused on generating meaningful clinical data, advancing its γδ T cell platforms toward key inflection points, and deploying capital efficiently across its highest-priority programs across oncology and autoimmune diseases.

(Press release, In8bio, MAR 12, 2026, View Source [SID1234663498])