On September 8, 2021, Alector, Inc. appointed Linda Rubinstein as Alectors interim Chief Financial Officer, Principal Financial Officer and Principal Accounting Officer. Ms. Rubinstein will serve in such positions until her successor is appointed or until Ms. Rubinsteins earlier resignation or removal. Ms. Rubinstein is a partner at FLG Partners, LLC (FLG Partners), a chief financial officer services and board advisory consulting firm. In conjunction with Ms. Rubinsteins appointment, Mr. Calvin Yu will no longer serve as Alectors Principal Financial Officer or Principal Accounting Officer. He will continue to serve as Alectors Vice President, Finance.