Senior-level hires and promotions for the week of Sept. 25, 2017

SAMANTHA L. DOWNIE has joined MBAF as the director of human resources and learning and development.
SAMANTHA L. DOWNIE has joined MBAF as the director of human resources and learning and development.

Commercial real estate

Justin Berryman has been named director for retail landlord services in the Miami office of Franklin Street. He transferred from the company’s Atlanta office to join the retail leasing team in South Florida, covering Miami-Dade and Broward counties. Berryman has a bachelor’s in entrepreneurship from Auburn University.


Xtreme Action Park in Fort Lauderdale, an indoor entertainment venue, has announced that it has hired Nate Howard to lead its team as managing director. His career includes experience with Business Solutions Consulting, where he was an IT consultant and project lead for technology integrations. Howard is a graduate of the United States Military Academy at West Point and U.S. Army Ranger School. He has an MBA from the Kellogg School of Management at Northwestern University.


At Fowler White Burnett:

▪ Charles “Charlie” S. Davant has joined the Fort Lauderdale office as a shareholder in its Maritime Practice Group. Previously he was a shareholder at Sedgwick LLP. He received his J.D. from Nova Southeastern University and a bachelor’s in business administration from the University of Florida.

▪ Oscar Grisales-Racini has joined the Miami office as a shareholder in the firm’s tax, trust & estates, mergers & acquisitions, and private equity/ venture capital practice groups. He was previously with GRSH Law. Grisales-Racini has a J.D., an LL.M. in taxation from Boston University, a master’s in international taxation and financial services, and an MBA.


Mariana Ferreira has been named business development director, Latin America, at Stingray Digital Group Inc. She will be based in Miami. She was senior director of business development at BLU Products. Ferreira has an MBA from UCLA and a bachelor’s in electrical and computer engineering from Universidade Federal do Rio de Janeiro.


Miami Cancer Institute has named Dr. Guenther Koehne chief of bone marrow transplantation and hematologic oncology. Koehne, an expert in immunotherapy and stem cell transplantions, comes from New York’s Memorial Sloan Kettering Cancer Center, where he helped lead the bone-marrow transplant service. He was educated at Medical University in Hamburg, Germany and Rush University Medical Center in Chicago. Miami Cancer Institute is part of Baptist Health South Florida.

This column lists high-level promotions of senior executives based in Broward, Miami-Dade or Monroe counties. These announcements, which also are at, are for full-time, paid positions. Send items, including previous job; educational background; high-res jpegs of head shots and the website address of the company to Put “Movers” in the subject line.

Mover’s spotlight

Name: Samantha L. Downie

New job: She has joined the public accounting firm MBAF as the director of human resources and learning and development.

From: Downie served as vice president of people and culture at SproutLoud Media Networks.

Education: Downie has a B.A. in communications from Alaska Pacific University and a master’s in international policy studies as well as Mandarin Chinese from the Middlebury Institute of International Studies.

Best advice she ever received: Go where you’re invited, stay where you’re appreciated.

Choices for Spotlight are made from promotions sent to

See past senior-level hires and promotions in South Florida for 2017:

▪ Jan. 2, 2017

▪ Jan. 9, 2017

▪ Jan. 16, 2017

▪ Jan. 23, 2017

▪ Jan. 30, 2017

▪ Feb. 6, 2017

▪ Feb. 13, 2017

▪ Feb. 20, 2017

▪ Feb. 27, 2017

▪ March 6, 2017

▪ March 13, 2017

▪ March 20, 2017

▪ March 27, 2017

▪ April 3, 2017

▪ April 10, 2017

▪ April 17, 2017

▪ April 24, 2017

▪ May 1, 2017

▪ May 8, 2017

▪ May 15, 2017

▪ May 22, 2017

▪ May 29, 2017

▪ June 5, 2017

▪ June 12, 2017

▪ June 19, 2017

▪ June 26, 2017

▪ July 3, 2017

▪ July 10, 2017

▪ July 17, 2017

▪ July 24, 2017

▪ July 31, 2017

▪ Aug. 7, 2017

▪ Aug. 14, 2017

▪ Aug. 21, 2017

▪ Aug. 28, 2017

▪ Sept. 4, 2017

▪ Sept. 11, 2017

(No Movers ran on Sept. 18, 2017)