X0304 4 2012-01-23 0 0001140098 ADVANCED CELL TECHNOLOGY, INC. ACTC 0001317093 Lanza Robert 33 LOCKE DRIVE MARLBOROUGH MA 01752 0 1 0 0 Chief Scientific Officer Common Stock, par value $0.001 2012-01-23 4 S 0 1000000 0.1754 D 32615875 D Common Stock, par value $0.001 2012-01-24 4 S 0 6658300 0.1919 D 25957575 D The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $0.171 to .178 to, inclusive. The reporting person undertakes to provide to Advanced Cell Technology, Inc., any shareholder of Advanced Cell Technology, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares acquired at each separate price within the ranges set forth in this footnote. The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $.168 to .202, inclusive. The reporting person undertakes to provide to Advanced Cell Technology, Inc., any shareholder of Advanced Cell Technology, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares acquired at each separate price within the ranges set forth in this footnote. /s/ Robert Lanza 2012-01-24