A company based in Livermore, California, FormFactor, Inc. (Nasdaq: FORM), revealed that it has been included in the US large-cap Russell 1000 ® Index. This change will take effect on June 29, 2026, coinciding with the opening of the US market. The adjustment is part of the 2026 reconstitution of the Russell indexes. Membership in the Russell 1000 ® Index, lasting for six months starting in 2026, is determined by belonging to the broad-market Russell 3000 ® Index. Additionally, the stock has been automatically incorporated into the relevant growth and value indexes.