After Instacart's IPO, the CEO will have stock worth $15.5 million. But the company's gig workers just took a pay cut.

• Instacart CEO Fidji Simo's shares of the company are set to be worth at least $15.5 million after its IPO.
• Instacart is poised to go public on Tuesday at a fraction of its early-pandemic valuation.
• Instacart's shoppers make as little as $4 per batch in base pay after the company cut the minimum in July. 

Instacart CEO Fidji Simo will have millions of dollars in Instacart stock once the company completes its IPO on Tuesday.