<P> After breaking up with Owen, Cristina continues to excel at surgery and becomes de facto chief of cardio . Although supportive of Meredith's choice to become a mother, Cristina points out the fact that it has hurt Meredith's career and clinical judgement . This causes a wedge in their friendship . Grey attempts to catch up professionally with a research trial, but the divide widens when Cristina's trial overshadows Grey's and steals Grey's resources . When Dr. Shane Ross, a second - year resident, stands up to Meredith for her, Cristina gives Shane a kiss . Later, she begins sleeping with him, as well as becoming his mentor and passing on the skills learned from Altman . Cristina's project is immensely successful and she is informed that she could be considered for the Harper Avery award from her 3 - D printing of a heart conduit . Grey and Yang reconcile when Grey acknowledges that Yang is correct, she has surpassed Grey, and that Grey is jealous of Yang's professional freedom and success, while her own is hampered by her family . </P> <P> Cristina is nominated for the Harper Avery award and is a strong candidate, however she is passed over due to her relationship with the Harper - Avery Foundation that co-owns the hospital . Cristina goes to speak at a hospital in Zurich, Switzerland, orchestrated by Preston Burke who built his own hospital following his winning of the Harper Avery . He offers Cristina his job as the head of the hospital so that he can spend more time with his wife and kids . </P> <P> Cristina accepts the offer and interviews candidates for her replacement position at the hospital, including Maggie Pierce for new chief of cardio . Cristina transfers her hospital shares to Alex Karev and recommends he take over her seat on the board . </P> <P> At the end of season 10, she says goodbye to her fellow co-workers she has come to know and love including Owen and Meredith . Cristina and Meredith share special moments together reminiscing about all the horrors they went through and dancing it out one last time . Cristina leaves for Zurich with surgical intern Shane Ross, who chooses to leave in order to study under her in Switzerland . </P>

Who gets christina's seat on the board