In an undated image provided by Roblox, Roblox’s CEO David Baszucki. The gaming company Roblox has pushed back its stock offering until next year. (Roblox via The New York Times) -- NO SALES; FOR EDITORIAL USE ONLY WITH NYT STORY EMPLOYEES VACCINE BY SORKIN, KARAIAN, MERCED, HIRSCH AND LIVNI FOR DEC. 14, 2020. ALL OTHER USE PROHIBITED. --