QT Imaging Holdings, Inc. (NASDAQ:QTI) ("QT Imaging" or the "Company"), a medical device company dedicated to transforming breast health management through innovative, radiation-free imaging technology, announces that it is expected to be added to the Russell Microcap® Index according to the list of additions posted online May 22, 2026. The addition of QT Imaging to this Index will be finalized at the conclusion of the 2026 Russell indexes reconstitution and, if affirmed, will be effective when the U.S. market opens on June 29, 2026.

The June Russell U.S. Indexes reconstitution captures the 4,000 largest U.S. stocks as of April 30, 2026, ranked by total market capitalization. The Russell Microcap® Index measures the performance of the microcap segment of the U.S. equity market and is widely used by institutional investors and investment managers as a benchmark for microcap equities.

Membership in the Russell Microcap® Index enhances visibility within the investment community, broadens exposure to institutional investors and index-based investment strategies, and increases awareness among market participants focused on the microcap sector. Inclusion also results in automatic membership in the applicable Russell growth and value style indexes.

FTSE Russell determines membership for its Russell indexes primarily by objective market capitalization rankings and style attributes.