Jamie Dimon, the chairman and chief executive of JPMorgan Chase, on Friday tackled allegations of racism at the banking giant, telling employees that such behavior “does not reflect who we are as a company and how we serve our clients and communities every day.”

In a memo sent to employees that was obtained by CNBC, Mr. Dimon said he was “disgusted by racism and hate in any form.” He said the company had “done some great work on diversity and inclusion, but it’s not enough.”

“We must be absolutely relentless on doing more,” he added.

Mr. Dimon told employees that he had instructed his management team to “continually look into our policies, procedures, management practices and culture.”

“Racism has existed for too long — in our country, in our communities — and unfortunately, at times, even at our company,” he added. “But this is not who we are. We want all of you to be active in making needed progress.”