Rashaun Williams, a venture capitalist and frequent “Shark Tank” guest star, has pledged to donate his salary for the next four years to his alma mater, Morehouse College in Atlanta, Georgia.

“One thing Morehouse gave me that no one else has been able to give me in my entire life is that stability. For four years, Morehouse poured into me, and in return, I would like to donate my entire salary for the next four years back to Morehouse,” Williams said Saturday at the college’s 37th Annual “A Candle in the Dark” Gala, where he received the Bennie Trailblazer Award.

Williams shared a clip from his acceptance speech to Instagram, where, after noting the event raised a record $6.8 million for the university, he wrote, “For the school that took me in when I needed a home, self esteem, education, brotherhood, mentors, hope and community, I hope to one day...