N-PX RMIC LIVE 0001107414 XXXXXXXX false false N-1A 06/30/2026 S000050542 true S000050332 true S000082802 true YEAR 2026 State Street Institutional Investment Trust 617-664-3920

One Congress Street Boston MA 02114

FUND VOTING REPORT N 811-09819 Y The State Street Equity 500 Index Fund, State Street Global All Cap Equity ex-U.S. Index Fund, State Street Aggregate Bond Index Fund and State Street Small/Mid Cap Equity Index Fund (the Funds) invest all of their respective investable assets in a corresponding similarly named master portfolio (State Street Equity 500 Index II Portfolio, State Street Global All Cap Equity ex-U.S. Index Portfolio, State Street Aggregate Bond Index Portfolio and State Street Small/Mid Cap Equity Index Portfolio) (the Portfolios)) of the State Street Institutional Investment Trust. There were no matters relating to the Portfolios considered at any shareholder meeting held during the period covered by this report with respect to which the Funds were entitled to vote. The proxy voting record of the Portfolios is set forth in their Form N-PX filings for the reporting period. There is no proxy voting activity for the Funds, as the Funds did not hold any votable positions during the reporting period. The State Street Institutional U.S. Government Money Market Fund, State Street Institutional Treasury Money Market Fund, State Street Institutional Treasury Plus Money Market Fund, State Street Federal Government Money Market Fund, State Street Federal Treasury Money Market Fund, and State Street Federal Treasury Plus Money Market Fund (the Funds) invest all of their respective investable assets in a corresponding similarly named master portfolio (State Street U.S. Government Money Market Portfolio, State Street Treasury Money Market Portfolio, and State Street Treasury Plus Money Market Portfolio) (the Portfolios)) of the State Street Master Funds. There were no matters relating to the Portfolios considered at any shareholder meeting held during the period covered by this report with respect to which the Funds were entitled to vote. The proxy voting record of the Portfolios is set forth in their Form N-PX filings for the reporting period. There is no proxy voting activity for the Funds, as the Funds did not hold any votable positions during the reporting period. The State Street Hedged International Developed Equity Index Fund (the Fund) invests a portion of its assets in the State Street International Developed Equity Index Portfolio (the Portfolio) a series of the State Street Master Funds, as described in the Funds prospectus. There were no matters relating to the Portfolio considered at any shareholder meeting held during the period covered by this report with respect to which the Fund was entitled to vote. During the reporting period, the Fund held votable positions and participated in proxy voting activity. The proxy voting record of the Portfolio is set forth in the State Street Master Funds Form N-PX filing for the reporting period. There is no proxy voting activity for the Fund, as the Fund did not hold any votable positions during the reporting period. . The State Street Treasury Obligations Money Market Fund (Treasury Fund) invests all of its investable assets in the State Street Treasury Plus Money Market Portfolio (Treasury Portfolio), a series of State Street Master Funds. There were no matters relating to the Treasury Portfolio considered at any shareholder meeting held during the period covered by this report with respect to which the Treasury Fund was entitled to vote. The Treasury Portfolio did not hold any securities for which it voted a proxy during the reporting period. There is no proxy voting activity for the Treasury Fund, as the Treasury Fund did not hold any votable positions during the reporting period. State Street Master Funds 811-09599|CIK 0001094885 State Street Institutional Investment Trust 811-09819|CIK 0001107414 0 3 S000050542 State Street Emerging Markets Equity Index Fund 5493001N95734JN4OD15 S000050332 State Street Small/Mid Cap Equity Index Portfolio 54930001FXUIVS800B48 S000082802 State Street Balanced Index Fund 9845003FAA4A8T4D1367 State Street Institutional Investment Trust Ann Carpenter Ann Carpenter President 08/20/2026