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Twist Bioscience: Siyuan Chen, Aaron Sato, Paula Green, and Angela Bitting

Twist Bioscience announced the promotion of Siyuan Chen to chief technology officer. Chen was previously senior director of research development. In an expansion of that role, he will outline Twist's technological vision and implement strategies to provide competitive advantages in product and market opportunity. Prior to Twist, he worked in R&D at Agilent Technologies. Chen holds a PhD in chemistry from the University of Wisconsin-Madison.

The firm has also promoted Aaron Sato to the company-wide role of chief scientific officer. In addition to continuing his role as CSO of Twist Biopharma, he will handle new custom protein and cell-based products, including high-throughput IgG antibodies. Before joining Twist in 2018, he was CSO of LakePharma.

Angela Bitting has joined Twist as senior VP of corporate affairs. She has consulted for Twist on external communications for six years as head of her own firm. Her purview will also include investor relations and internal communications.

In addition, Paula Green has been promoted to senior VP, human resources at Twist.