Show the progression clearly without consuming unnecessary space. You can keep one company heading and list the titles and dates underneath it, then use the bullets for the most important accomplishments across the period.

If responsibilities changed substantially after promotion, separate the bullets by title. If the work was continuous, a combined format can be cleaner.

The recruiter should be able to see the promotions immediately without reading every bullet. If useful, this guide on consulting resume guide gives more detail.

one company heading + titles underneath saves tons of space.