Description of Business and Liquidity	3 Months Ended
Jun. 30, 2026
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Description of Business and Liquidity	Description of Business and Liquidity [A] Description of Business Immunovant, Inc. (together with its wholly-owned subsidiaries, the “Company” or “Immunovant”) is a clinical-stage immunology company dedicated to enabling normal lives for people with autoimmune diseases. The Company is pursuing a broad anti-FcRN strategy based on its lead asset, IMVT-1402, a novel, fully human, monoclonal antibody that targets the neonatal fragment crystallizable receptor (“FcRn”). Designed to be optimized as a simple, subcutaneous injection, IMVT-1402 has been observed to reduce immunoglobulin G (“IgG”) antibody levels, which has provided evidence supporting the use of an anti-FcRn antibody in disease areas associated with high levels of pathogenic IgG antibodies. In April 2026, the Company discontinued further development of batoclimab (formerly referred to as IMVT-1401) across all indications to focus fully on the development of IMVT-1402. [B] Liquidity The Company has incurred significant losses and negative cash flows from operations since its inception. As of June 30, 2026, the Company’s cash and cash equivalents totaled $797.8 million and its accumulated deficit was $1,898.4 million. The Company has not generated any revenues to date and does not anticipate generating any revenues unless and until it successfully completes development and obtains regulatory approval for IMVT-1402 or any future product candidate. Management expects to incur additional losses in the future to fund its operations and conduct product research and development and recognizes the need to raise additional capital to fully implement its business plan. The Company intends to raise such additional capital through the issuance of equity securities, debt financings, potential collaboration, license or development agreements or other sources in order to further implement its business plan. However, if such financing is not available at adequate levels, the Company will need to reevaluate its operating plan and may be required to delay the development of its product candidates.

Description of Business and Liquidity

3 Months Ended

Jun. 30, 2026

Organization, Consolidation and Presentation of Financial Statements [Abstract]

[A] Description of Business

Immunovant, Inc. (together with its wholly-owned subsidiaries, the “Company” or “Immunovant”) is a clinical-stage immunology company dedicated to enabling normal lives for people with autoimmune diseases. The Company is pursuing a broad anti-FcRN strategy based on its lead asset, IMVT-1402, a novel, fully human, monoclonal antibody that targets the neonatal fragment crystallizable receptor (“FcRn”). Designed to be optimized as a simple, subcutaneous injection, IMVT-1402 has been observed to reduce immunoglobulin G (“IgG”) antibody levels, which has provided evidence supporting the use of an anti-FcRn antibody in disease areas associated with high levels of pathogenic IgG antibodies. In April 2026, the Company discontinued further development of batoclimab (formerly referred to as IMVT-1401) across all indications to focus fully on the development of IMVT-1402.

[B] Liquidity

The Company has incurred significant losses and negative cash flows from operations since its inception. As of June 30, 2026, the Company’s cash and cash equivalents totaled $797.8 million and its accumulated deficit was $1,898.4 million.

The Company has not generated any revenues to date and does not anticipate generating any revenues unless and until it successfully completes development and obtains regulatory approval for IMVT-1402 or any future product candidate. Management expects to incur additional losses in the future to fund its operations and conduct product research and development and recognizes the need to raise additional capital to fully implement its business plan.

The Company intends to raise such additional capital through the issuance of equity securities, debt financings, potential collaboration, license or development agreements or other sources in order to further implement its business plan. However, if such financing is not available at adequate levels, the Company will need to reevaluate its operating plan and may be required to delay the development of its product candidates.