What is the relationship between Sam Altman and Reddit in the context of the input sentence. Choose an answer from: product/material produced; manufacturer; distributed by; industry; position held; original broadcaster; owned by; founded by; distribution format; headquarters location; stock exchange; currency; parent organization; chief executive officer; director/manager; owner of; operator; member of; employer; chairperson; platform; subsidiary; legal form; publisher; developer; brand; business division; location of formation; creator.

Alexis Ohanian, another co-founder who has been working as executive chairman of reddit, will work “alongside” Huffman, said Reddit board head Sam Altman in a statement on Friday.
employer