HB 4424, filed by House Speaker Kyle Hilbert (R-Bristow), ends data center eligibility for Oklahoma's property tax exemption program — which covers facility property taxes for the first five years — for facilities not operational by January 1, 2027. Hilbert previously authored a 2021 law excluding new data centers from the exemption but now seeks to close loopholes for facilities that qualified before that cutoff. The bill is part of a broader push as Oklahoma residents push back against data center impacts on energy bills, water supplies, and noise. VERIFIED 2026-05-26: HB 4424 (end data center tax exemptions) stalled in House Appropriations & Budget and effectively died; only HB 2992 survived among OK data center bills.