Restructuring	6 Months Ended
Jun. 30, 2025
Restructuring and Related Activities [Abstract]
Restructuring	9. Restructuring On March 7, 2025, the Company committed to a plan to reduce its workforce by approximately 13% as part of its cost reduction initiatives in order to align resources with the Company’s strategic priorities, including advancing its preclinical and research pipeline. The Company initiated a reduction in force impacting approximately 25 employees across the organization. One-time restructuring charges associated with the reduction in force are expected to be approximately $2.4 million, primarily consisting of personnel expenses such as salaries, one-time severance payments, and other benefits. For the three months ended June 30, 2025 there were no restructuring charges incurred by the Company. For the six months ended June 30, 2025, the Company incurred restructuring costs of $2.3 million that were included in operating expenses. Accrued liabilities associated with restructuring costs as of June 30, 2025 were $0.2 million.

Restructuring

6 Months Ended

Jun. 30, 2025

Restructuring and Related Activities [Abstract]

9. Restructuring

On March 7, 2025, the Company committed to a plan to reduce its workforce by approximately 13% as part of its cost reduction initiatives in order to align resources with the Company’s strategic priorities, including advancing its preclinical and research pipeline. The Company initiated a reduction in force impacting approximately 25 employees across the organization. One-time restructuring charges associated with the reduction in force are expected to be approximately $2.4 million, primarily consisting of personnel expenses such as salaries, one-time severance payments, and other benefits. For the three months ended June 30, 2025 there were no restructuring charges incurred by the Company. For the six months ended June 30, 2025, the Company incurred restructuring costs of $2.3 million that were included in operating expenses. Accrued liabilities associated with restructuring costs as of June 30, 2025 were $0.2 million.

Alector, Inc. 10-Q