REGENXBIO Announces Leadership Transition PR Newswire ROCKVILLE, Md., June 12, 2024 Curran Simpson , Chief Operating Officer, Appointed as President and CEO Co-Founder Kenneth T. Mills to Step Down as President and CEO; Named Chairman of the Board ROCKVILLE, Md. , June 12, 2024 /PRNewswire/ -- REGENXBIO Inc. (Nasdaq: RGNX) today announced that Curran Simpson , Chief Operating Officer, has been appointed as President, Chief Executive Officer and a member of the Board of Directors, effective July...