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  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;font-weight:bold;">SECURITIES
  AND EXCHANGE COMMISSION</font></b></p>
  
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">WASHINGTON, D.C. 20549</font></b></p>
  
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman">&nbsp;</font></p>
  
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;font-weight:bold;">FORM 8-K</font></b></p>
  
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman">&nbsp;</font></p>
  
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="3" face="Times New Roman" style="font-size:12.0pt;font-weight:bold;">CURRENT
  REPORT<br>
  PURSUANT TO SECTION 13 OR 15(D) OF THE<br>
  SECURITIES EXCHANGE ACT OF 1934</font></b></p>
  
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman">&nbsp;</font></p>
  
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Date of report (Date of earliest event reported):<b>&#160; May 26, 2008</b></font></p>
  
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman">&nbsp;</font></p>
  
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;font-weight:bold;">ADVANCED
  CELL TECHNOLOGY, INC.</font></b></p>
  
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Exact name of registrant as specified in its charter)</font></p>
  
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman">&nbsp;</font></p>
  
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
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    <td width="32%" valign="top" style="padding:0in 0in 0in 0in;width:32.0%;">
    <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Delaware</font></b></p>
    </td>
    <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.0%;">
    <p style="margin:0in 0in .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>
    </td>
    <td width="32%" valign="top" style="padding:0in 0in 0in 0in;width:32.0%;">
    <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">000-50295</font></b></p>
    </td>
    <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.0%;">
    <p style="margin:0in 0in .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>
    </td>
    <td width="32%" valign="top" style="padding:0in 0in 0in 0in;width:32.0%;">
    <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">87-0656515</font></b></p>
    </td>
   </tr>
   <tr>
    <td width="32%" valign="top" style="padding:0in 0in 0in 0in;width:32.0%;">
    <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(State or other jurisdiction<br>
    of&nbsp;incorporation)</font></p>
    </td>
    <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.0%;">
    <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
    </td>
    <td width="32%" valign="top" style="padding:0in 0in 0in 0in;width:32.0%;">
    <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Commission File Number)</font></p>
    </td>
    <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.0%;">
    <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
    </td>
    <td width="32%" valign="top" style="padding:0in 0in 0in 0in;width:32.0%;">
    <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(IRS Employer Identification Number)</font></p>
    </td>
   </tr>
  </table>
  
  </div>
  
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman">&nbsp;</font></p>
  
  <table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;width:100.0%;">
   <tr>
    <td width="100%" valign="top" style="padding:0in 0in 0in 0in;width:100.0%;">
    <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">381 Plantation Street Worcester, Massachusetts 01605</font></b></p>
    </td>
   </tr>
   <tr>
    <td width="100%" valign="top" style="padding:0in 0in 0in 0in;width:100.0%;">
    <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Address of principal executive offices, including zip code)</font></p>
    </td>
   </tr>
   <tr>
    <td width="100%" valign="top" style="padding:0in 0in 0in 0in;width:100.0%;">
    <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
    </td>
   </tr>
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    <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">(510) 748-4900</font></b></p>
    </td>
   </tr>
   <tr>
    <td width="100%" valign="top" style="padding:0in 0in 0in 0in;width:100.0%;">
    <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Registrant&#146;s telephone number, including area code)</font></p>
    </td>
   </tr>
   <tr>
    <td width="100%" valign="top" style="padding:0in 0in 0in 0in;width:100.0%;">
    <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
    </td>
   </tr>
   <tr>
    <td width="100%" valign="top" style="padding:0in 0in 0in 0in;width:100.0%;">
    <p style="font-weight:bold;margin:0in 0in .0001pt;page-break-after:auto;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></b></p>
    </td>
   </tr>
   <tr>
    <td width="100%" valign="top" style="padding:0in 0in 0in 0in;width:100.0%;">
    <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Former name or former address, if changed since last report)</font></p>
    </td>
   </tr>
  </table>
  
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman">&nbsp;</font></p>
  
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman">&nbsp;</font></p>
  
  <h4 style="font-weight:bold;margin:0in 0in .0001pt;page-break-after:auto;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:normal;">Check the appropriate box below
  if the Form 8-K filing is intended to simultaneously satisfy the filing
  obligation of the registrant under any of the following provisions:</font></b></h4>
  
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman">&nbsp;</font></p>
  
  <h4 style="font-weight:bold;margin:0in 0in .0001pt;page-break-after:auto;"><b><font size="2" face="Wingdings" style="font-size:10.0pt;font-weight:normal;">o</font></b><font size="2" style="font-size:10.0pt;font-weight:normal;">&nbsp;&nbsp;&nbsp;Written
  communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)</font></h4>
  
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman">&nbsp;</font></p>
  
  <h4 style="font-weight:bold;margin:0in 0in .0001pt;page-break-after:auto;"><b><font size="2" face="Wingdings" style="font-size:10.0pt;font-weight:normal;">o</font></b><font size="2" style="font-size:10.0pt;font-weight:normal;">&nbsp;&nbsp;&nbsp;Soliciting
  material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)</font></h4>
  
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman">&nbsp;</font></p>
  
  <h4 style="font-weight:bold;margin:0in 0in .0001pt;page-break-after:auto;"><b><font size="2" face="Wingdings" style="font-size:10.0pt;font-weight:normal;">o</font></b><font size="2" style="font-size:10.0pt;font-weight:normal;">&nbsp;&nbsp;&nbsp;Pre-commencement
  communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR
  240.14d-2(b)</font></h4>
  
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman">&nbsp;</font></p>
  
  <p style="font-size:10.0pt;margin:0in 0in .0001pt;"><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font>&nbsp;&nbsp;&nbsp;Pre-commencement communications pursuant to
  Rule 13e-4(c) under the Exchange Act (17 CAR 240.13e-4(c))</p>
  
  <div style="border:none;border-bottom:double windowtext 6.0pt;padding:0in 0in 0in 0in;">
  
  <p style="border:none;margin:0in 0in .0001pt;padding:0in;"><font size="2" face="Times New Roman">&nbsp;</font></p>
  
  </div>
  
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman">&nbsp;</font></p>
  
  <div style="margin:0in 0in .0001pt;"><hr size="3" width="100%" noshade color="#010101" align="left"></div>
  
  </div>
  <!-- SEQ.=1,FOLIO='',FILE='C:\JMS\105534\08-15195-2\task2970767\15195-2-ba.htm',USER='105534',CD='Jun  3 06:08 2008' -->
  
  
  <br clear="all" style="page-break-before:always;">
  
  
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  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman">&nbsp;</font></p>
  
  <p style="font-size:10.0pt;margin:0in 0in .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">ITEM&#160; 5.02&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font></b><b>Departure of Directors or Certain
  Officers; Election of Directors; Appointment of Certain Officers; Compensatory
  Arrangements of Certain Officers.</b></p>
  
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">On
  May 26, 2008, Alan G. Walton, Ph.D., D.Sc. announced his resignation from the
  Board of Directors of Advanced Cell Technology, Inc. (the &#147;Company&#148;), effective
  immediately.&nbsp; Dr. Walton had no disagreements with the Company, its Board
  of Directors or its management in any matter relating to the Company&#146;s
  operations, policies or practices.</font></p>
  
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman">&nbsp;</font></p>
  
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">2</font></p>
  
  <div style="margin:0in 0in .0001pt;"><hr size="3" width="100%" noshade color="#010101" align="left"></div>
  
  </div>
  <!-- SEQ.=1,FOLIO='2',FILE='C:\JMS\105534\08-15195-2\task2970767\15195-2-ba.htm',USER='105534',CD='Jun  3 06:08 2008' -->
  
  
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  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman">&nbsp;</font></p>
  
  <table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;width:100.0%;">
   <tr>
    <td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.58%;">
    <h3 style="font-weight:bold;margin:0in 0in .0001pt;page-break-after:auto;text-indent:0in;"><b><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></b></h3>
    </td>
    <td width="49%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:49.42%;">
    <h3 style="font-weight:bold;margin:0in 0in .0001pt;page-break-after:auto;text-indent:0in;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;">ADVANCED CELL
    TECHNOLOGY, INC.</font></b></h3>
    </td>
   </tr>
   <tr>
    <td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.58%;">
    <h3 style="font-weight:bold;margin:0in 0in .0001pt;page-break-after:auto;text-indent:0in;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></b></h3>
    </td>
    <td width="49%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:49.42%;">
    <h3 style="font-weight:bold;margin:0in 0in .0001pt;page-break-after:auto;text-indent:0in;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></b></h3>
    </td>
   </tr>
   <tr>
    <td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.58%;">
    <h3 style="font-weight:bold;margin:0in 0in .0001pt;page-break-after:auto;text-indent:0in;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></b></h3>
    </td>
    <td width="49%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:49.42%;">
    <h3 style="font-weight:bold;margin:0in 0in .0001pt;page-break-after:auto;text-indent:0in;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></b></h3>
    </td>
   </tr>
   <tr>
    <td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.58%;">
    <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
    </td>
    <td width="4%" valign="top" style="padding:0in 0in 0in 0in;width:4.0%;">
    <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>
    </td>
    <td width="45%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:45.42%;">
    <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/
    William M. Caldwell, IV</font></p>
    </td>
   </tr>
   <tr>
    <td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.58%;">
    <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
    </td>
    <td width="4%" valign="top" style="padding:0in 0in 0in 0in;width:4.0%;">
    <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
    </td>
    <td width="45%" valign="top" style="border:none;padding:0in 0in 0in 0in;width:45.42%;">
    <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">William
    M. Caldwell, IV</font></p>
    </td>
   </tr>
   <tr>
    <td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.58%;">
    <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
    </td>
    <td width="4%" valign="top" style="padding:0in 0in 0in 0in;width:4.0%;">
    <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
    </td>
    <td width="45%" valign="top" style="padding:0in 0in 0in 0in;width:45.42%;">
    <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Chief
    Executive Officer</font></p>
    </td>
   </tr>
   <tr>
    <td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.58%;">
    <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
    </td>
    <td width="49%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:49.42%;">
    <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
    </td>
   </tr>
   <tr>
    <td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.58%;">
    <p style="margin:0in 0in .0001pt;page-break-after:auto;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Dated: June 2, 2008</font></p>
    </td>
    <td width="49%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:49.42%;">
    <p style="margin:0in 0in .0001pt;page-break-after:auto;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
    </td>
   </tr>
  </table>
  
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman">&nbsp;</font></p>
  
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">3</font></p>
  
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  <!-- SEQ.=1,FOLIO='3',FILE='C:\JMS\105534\08-15195-2\task2970767\15195-2-ba.htm',USER='105534',CD='Jun  3 06:08 2008' -->
  
  
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metadata_documents: [{"type": "8-K", "sequence": "1", "filename": "a08-15195_28k.htm", "description": "8-K", "secsgml_size_bytes": 17673}]
metadata_filer: {"company-data": {"conformed-name": "ADVANCED CELL TECHNOLOGY, INC.", "cik": "0001140098", "assigned-sic": "2834", "irs-number": "870656515", "state-of-incorporation": "DE", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "8-K", "act": "34", "file-number": "000-50295", "film-number": "08875770"}, "business-address": {"street1": "381 PLANTATION STREET", "city": "WORCESTER", "state": "MA", "zip": "01605", "phone": "508-756-1212"}, "mail-address": {"street1": "381 PLANTATION STREET", "city": "WORCESTER", "state": "MA", "zip": "01605"}, "former-company": [{"former-conformed-name": "A.C.T. Holdings, Inc.", "date-changed": "20050303"}, {"former-conformed-name": "A.C.T Holdings, Inc.", "date-changed": "20050207"}, {"former-conformed-name": "ACT Holdings Inc.", "date-changed": "20050204"}]}
text: SECURITIES
  AND EXCHANGE COMMISSION
  WASHINGTON, D.C. 20549
  FORM 8-K
  CURRENT
  REPORT
  PURSUANT TO SECTION 13 OR 15(D) OF THE
  SECURITIES EXCHANGE ACT OF 1934
  Date of report (Date of earliest event reported):
  May 26, 2008
  ADVANCED
  CELL TECHNOLOGY, INC.
  (Exact name of registrant as specified in its charter)
  Delaware
  000-50295
  87-0656515
  (State or other jurisdiction
  of incorporation)
  (Commission File Number)
  (IRS Employer Identification Number)
  381 Plantation Street Worcester, Massachusetts 01605
  (Address of principal executive offices, including zip code)
  (510) 748-4900
  (Registrant's telephone number, including area code)
  (Former name or former address, if changed since last report)
  Check the appropriate box below
  if the Form 8-K filing is intended to simultaneously satisfy the filing
  obligation of the registrant under any of the following provisions:
  o
  Written
  communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
  o
  Soliciting
  material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
  o
  Pre-commencement
  communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR
  240.14d-2(b)
  o
  Pre-commencement communications pursuant to
  Rule 13e-4(c) under the Exchange Act (17 CAR 240.13e-4(c))
  ITEM  5.02
  Departure of Directors or Certain
  Officers; Election of Directors; Appointment of Certain Officers; Compensatory
  Arrangements of Certain Officers.
  On
  May 26, 2008, Alan G. Walton, Ph.D., D.Sc. announced his resignation from the
  Board of Directors of Advanced Cell Technology, Inc. (the "Company"), effective
  immediately.  Dr. Walton had no disagreements with the Company, its Board
  of Directors or its management in any matter relating to the Company's
  operations, policies or practices.
  2
  ADVANCED CELL
    TECHNOLOGY, INC.
  By:
  /s/
    William M. Caldwell, IV
  William
    M. Caldwell, IV
  Chief
    Executive Officer
  Dated: June 2, 2008
  3