Needham & Company has added key research, sales and sales trading professionals in healthcare services research; Boston equity sales; corporate access origination and client strategy; event-driven, special situations and merger arbitrage sales; and sales trading.

Kevin Caliendo, managing director, recently joined the firm. He brings 20 years of Wall Street experience, primarily on the buy-side, analysing and investing in the healthcare industry. Caliendo spent the past two years at Deimos Asset Management as a portfolio manager. Prior to that, Caliendo was a healthcare portfolio manager at SAC Capital, FrontPoint Partners, and Clearbridge Advisors.
 
Patrick “Pat” Malloy, managing director, has joined to lead the Boston equity sales effort. Malloy spent the past seven years at UBS as a senior producer, and nearly four years previously at Cowen and Company. Prior to that, he spent two years as an equities trader at Longwood Investments. 
 
Erika Olsen, principal, recently joined to lead the firm’s corporate access efforts. Olsen has nearly a decade of corporate access experience at Sterne Agee CRT, Open Exchange, Barclays, and Goldman Sachs. 
 
Ryan Vaughan, principal, joined the firm as a senior analyst focusing on event-driven, special situations, distressed & post-reorganisation equities. Recently, Vaughan was at Third Avenue Management, and spent most of his career at Lombard Odier Asset Management. While at Lombard Odier, Vaughan invested across the capital structure, focusing on the media, telecom, consumer, energy, industrials and power sectors. Prior to Lombard Odier, Vaughan was a senior analyst in event-driven, special situations, distressed and post-reorganisation equities at 3V Capital and Libertas Partners in Greenwich, CT.
 
Greg Seaman, vice president, recently joined the firm from Jefferies, where he provided sales trading coverage for a diverse set of clients in the New York and Connecticut regions. Prior to Jefferies, Seaman spent five years as a sales trader for CapRok Capital, where he worked primarily on structured debt products.
 
Caliendo is based in New York and reports to Tom Maloney (pictured), managing director and director of research.
 
Malloy, based in Boston, and Olsen, Vaughan and Seaman, based in New York, report to Greg Giannakopoulos, managing director, head of institutional sales and sales trading.