1. Todd Combs, investment officer at Berkshire, is resigning for JPMorgan Chase role. 2. Combs has made significant contributions to GEICO under Berkshire's management. 3. Warren Buffett endorses Combs' move as beneficial for both parties. 4. Succession planning in Berkshire progresses as Buffett hands over CEO reins in 2026. 5. The structural changes come as Buffett prepares for retirement, affecting company dynamics.