BRIEF-Seaspan appoints David Spivak as CFO
April 21 (Reuters) - Seaspan Corp
* Seaspan appoints David Spivak as chief financial officer
* Mark Chu will continue to serve as interim CFO until David's arrival
* After David's arrival, Mark will continue in his current roles as vice president, corporate development and general counsel Source text for Eikon: Further company coverage: (Bengaluru Newsroom: +1-646-223-8780)
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