The goal of this clinical trial is to learn if tenectplase works to acute ischemic stroke (AIS) with onset 4.5-9 hours. It will also learn about the safety of tenectplase in AIS with onset 4.5-9 hours. The main question it aims to answer is: Does tenectplase improve the 90-days functional outcome in participants with acute large vessel occlusion? Researchers will compare tenectplase thrombolysis to non-use to see if tenectplase works to improve the functional outcome in participants with onset 4.5-9 hours. Participants will:\* Receive 0.25mg/kg (max 25mg) tenectplase at admission (after randomization) .\* Receive neurological assessment at admission, Day 5-7 or on hospital discharge (whichever earlier). Audio or video of the assessment may be recorded if possible.\* Receive brain CT + CT angiogram + CT perfusion and MRI after randomization, where the CT scan may be repetitive.