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<P STYLE="font: 18pt/normal Times New Roman, Times, Serif; margin: 0; text-align: center">&nbsp;</P>

<P STYLE="font: 18pt/normal Times New Roman, Times, Serif; margin: 0; text-align: center"><B>SECURITIES AND EXCHANGE COMMISSION</B></P>

<P STYLE="font: 10pt/normal Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt/normal Times New Roman, Times, Serif; margin: 0; text-align: center"><B>WASHINGTON, D.C. 20549</B></P>

<P STYLE="font: 10pt/normal Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 18pt/normal Times New Roman, Times, Serif; margin: 0; text-align: center"><B>FORM&nbsp;8-K</B></P>

<P STYLE="font: 10pt/normal Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt/normal Times New Roman, Times, Serif; margin: 0; text-align: center"><B>CURRENT REPORT</B></P>

<P STYLE="font: 10pt/normal Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt/normal Times New Roman, Times, Serif; margin: 0; text-align: center"><B>PURSUANT TO SECTION&nbsp;13 OR 15(D)&nbsp;OF
THE</B></P>

<P STYLE="font: 10pt/normal Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt/normal Times New Roman, Times, Serif; margin: 0; text-align: center"><B>SECURITIES EXCHANGE ACT OF 1934</B></P>

<P STYLE="font: 10pt/normal Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt/normal Times New Roman, Times, Serif; margin: 0; text-align: center">Date of report (Date of earliest event
reported):&nbsp; <B>&nbsp;&nbsp;&nbsp;March 1, 2012</B></P>

<P STYLE="font: 10pt/normal Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 18pt/normal Times New Roman, Times, Serif; margin: 0; text-align: center"><B>ADVANCED CELL TECHNOLOGY, INC.</B></P>

<P STYLE="font: 10pt/normal Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt/normal Times New Roman, Times, Serif; margin: 0; text-align: center">(Exact name of registrant as specified
in its charter)</P>

<P STYLE="font: 10pt/normal Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
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    <TD STYLE="width: 33%; vertical-align: top; padding-right: 0; line-height: 115%; font-weight: bold; text-align: center"><B>Delaware</B></TD>
    <TD STYLE="width: 2%; vertical-align: bottom; padding-right: 0; line-height: 115%">&nbsp;</TD>
    <TD STYLE="width: 30%; vertical-align: top; padding-right: 0; line-height: 115%; font-weight: bold; text-align: center"><B>000-50295</B></TD>
    <TD STYLE="width: 2%; vertical-align: bottom; padding-right: 0; line-height: 115%">&nbsp;</TD>
    <TD STYLE="width: 33%; vertical-align: top; padding-right: 0; line-height: 115%; font-weight: bold; text-align: center"><B>87-0656515</B></TD></TR>
<TR>
    <TD STYLE="vertical-align: top; padding-right: 0">
        <P STYLE="font: 10pt/normal Times New Roman, Times, Serif; margin: 0 0.8pt 0 0; text-align: center">(State or other jurisdiction</P>
        <P STYLE="font: 10pt/normal Times New Roman, Times, Serif; margin: 0 0.8pt 0 0; text-align: center">of&nbsp;incorporation)</P></TD>
    <TD STYLE="vertical-align: bottom; padding-right: 0; line-height: 115%">&nbsp;</TD>
    <TD STYLE="vertical-align: top; padding-right: 0; line-height: 115%; text-align: center">(Commission File Number)</TD>
    <TD STYLE="vertical-align: bottom; padding-right: 0; line-height: 115%">&nbsp;</TD>
    <TD STYLE="vertical-align: top; padding-right: 0; line-height: 115%; text-align: center">(IRS Employer Identification Number)</TD></TR>
<TR STYLE="vertical-align: top">
    <TD COLSPAN="5" STYLE="padding-right: 0; line-height: 115%">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD COLSPAN="5" STYLE="padding-right: 0; line-height: 115%; font-weight: bold; text-align: center"><B>33 Locke Drive, Marlborough, MA 01752</B></TD></TR>
<TR STYLE="vertical-align: top">
    <TD COLSPAN="5" STYLE="padding-right: 0; line-height: 115%; text-align: center">(Address of principal executive offices, including zip code)</TD></TR>
<TR STYLE="vertical-align: top">
    <TD COLSPAN="5" STYLE="padding-right: 0; line-height: 115%">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD COLSPAN="5" STYLE="padding-right: 0; line-height: 115%; font-weight: bold; text-align: center"><B>(508) 756-1212</B></TD></TR>
<TR STYLE="vertical-align: top">
    <TD COLSPAN="5" STYLE="padding-right: 0; line-height: 115%; text-align: center">(Registrant&rsquo;s telephone number, including area code)</TD></TR>
<TR STYLE="vertical-align: top">
    <TD COLSPAN="5" STYLE="padding-right: 0; line-height: 115%">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD COLSPAN="5" STYLE="padding-right: 0; line-height: 115%">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD COLSPAN="5" STYLE="padding-right: 0; line-height: 115%; text-align: center">(Former name or former address, if changed since last report)</TD></TR>
</TABLE>
<P STYLE="font: 10pt/normal Times New Roman, Times, Serif; margin: 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt/normal Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt/normal Times New Roman, Times, Serif; margin: 0">Check the appropriate box below if the Form&nbsp;8-K filing
is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:</P>

<P STYLE="font: 10pt/normal Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt/normal Times New Roman, Times, Serif; margin: 0"></P>

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    <TD STYLE="width: 5%; padding-right: 0; padding-left: 0; line-height: 115%"><FONT STYLE="font-family: Wingdings">o</FONT><FONT STYLE="font-family: Times New Roman, Times, Serif"> </FONT></TD>
    <TD STYLE="width: 95%; padding-right: 0; padding-left: 0; line-height: 115%">Written communications pursuant to Rule&nbsp;425 under the Securities Act (17 CFR 230.425)</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 0; padding-left: 0; line-height: 115%">&nbsp;</TD>
    <TD STYLE="padding-right: 0; padding-left: 0; line-height: 115%">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 0; padding-left: 0; line-height: 115%"><FONT STYLE="font-family: Wingdings">x</FONT>&nbsp;<FONT STYLE="font-family: Times New Roman, Times, Serif"> </FONT></TD>
    <TD STYLE="padding-right: 0; padding-left: 0; line-height: 115%">Soliciting material pursuant to Rule&nbsp;14a-12 under the Exchange Act (17 CFR 240.14a-12)</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 0; padding-left: 0; line-height: 115%">&nbsp;</TD>
    <TD STYLE="padding-right: 0; padding-left: 0; line-height: 115%">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 0; padding-left: 0; line-height: 115%"><FONT STYLE="font-family: Wingdings">o</FONT><FONT STYLE="font-family: Times New Roman, Times, Serif"> </FONT></TD>
    <TD STYLE="padding-right: 0; padding-left: 0; line-height: 115%">Pre-commencement communications pursuant to Rule&nbsp;14d-2(b)&nbsp;under the Exchange Act (17 CFR 240.14d-2(b)</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 0; padding-left: 0; line-height: 115%">&nbsp;</TD>
    <TD STYLE="padding-right: 0; padding-left: 0; line-height: 115%">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 0; padding-left: 0; line-height: 115%"><FONT STYLE="font-family: Wingdings">o</FONT><FONT STYLE="font-family: Times New Roman, Times, Serif"> </FONT></TD>
    <TD STYLE="padding-right: 0; padding-left: 0; line-height: 115%">Pre-commencement communications pursuant to Rule&nbsp;13e-4(c)&nbsp;under the Exchange Act (17 CAR 240.13e-4(c))</TD></TR>
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<P STYLE="font: 10pt/normal Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt/normal Times New Roman, Times, Serif; margin: 0; text-align: center">&nbsp;</P>

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<P STYLE="font: 10pt/normal Times New Roman, Times, Serif; margin: 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt/normal Times New Roman, Times, Serif; margin: 0"><B>Item 2.02 Results of Operations and Financial Condition.</B></P>

<P STYLE="font: 10pt/normal Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt/normal Times New Roman, Times, Serif; margin: 0; text-align: justify">On March 1, 2012, Advanced Cell Technology,
Inc. (the &ldquo;Company&rdquo;) issued a press release announcing its financial results for the year ended December 31, 2011 and
certain other information, including certain information regarding a proposed reverse stock split. A copy of the Company&rsquo;s
press release announcing these financial results and certain other information is attached hereto as Exhibit 99.1.</P>

<P STYLE="font: 10pt/normal Times New Roman, Times, Serif; margin: 0; text-align: justify">&nbsp;&nbsp;</P>

<P STYLE="font: 10pt/normal Times New Roman, Times, Serif; margin: 0"><B>Additional Information and Where to Find It</B></P>

<P STYLE="font: 10pt/normal Times New Roman, Times, Serif; margin: 0"><B>&nbsp;</B></P>

<P STYLE="font: 10pt/normal Times New Roman, Times, Serif; margin: 0">The Company has filed with the Securities and Exchange Commission
(the &ldquo;SEC&rdquo;) a preliminary proxy statement in connection with the Company&rsquo;s proposal to effect a reverse stock
split. The Company plans to file a definitive proxy statement with the SEC and furnish such definitive proxy statement to stockholders
of record on the record date for the meeting at which stockholders will be asked to approve the proposed reverse stock split. The
Company, Mr. Rabin and certain of its directors, executive officers and other members of management may, under SEC rules, be deemed
&ldquo;participants&rdquo; in the solicitation of proxies from the Company&rsquo;s stockholders with respect to the proposed reverse
stock split. INVESTORS AND STOCKHOLDERS ARE ADVISED TO READ THE DEFINITIVE PROXY STATEMENT AND ANY OTHER RELEVANT DOCUMENTS FILED
WITH THE SEC WHEN THEY BECOME AVAILABLE BECAUSE THOSE DOCUMENTS WILL CONTAIN IMPORTANT INFORMATION ABOUT THE PROPOSED REVERSE STOCK
SPLIT ABOUT THE PROPOSAL AND OTHER IMPORTANT INFORMATION INCLUDING THOSE PERSONS WHO MAY BE DEEMED &ldquo;PARTICIPANTS&rdquo; IN
THE SOLICITATION. Investors and stockholders may obtain a free copy of the definitive proxy statement when it becomes available,
and other documents filed by the Company with the SEC, including the preliminary proxy statement, at the SEC&rsquo;s web site at
http://www.sec.gov. Free copies of the definitive proxy statement, when it becomes available, and the Company&rsquo;s other filings
with the SEC may also be obtained from the Company by directing a request to Advanced Cell Technology, Inc., 33 Locke Drive, Marlborough,
Massachusetts 01752, Attention: Secretary.</P>

<P STYLE="font: 10pt/normal Times New Roman, Times, Serif; margin: 0"><B>&nbsp;</B></P>

<P STYLE="font: 10pt/normal Times New Roman, Times, Serif; margin: 0"><B>&nbsp;</B></P>

<P STYLE="font: 10pt/normal Times New Roman, Times, Serif; margin: 0"><B>&nbsp;</B></P>

<P STYLE="font: 10pt/normal Times New Roman, Times, Serif; margin: 0"><B>Item 9.01 Financial Statements and Exhibits.</B></P>

<P STYLE="font: 10pt/normal Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

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    <TD STYLE="width: 17%; border-bottom: black 1.5pt solid; padding-right: 0; line-height: 115%; text-align: center">Exhibit No.</TD>
    <TD STYLE="width: 83%; border-bottom: black 1.5pt solid; padding-right: 0; line-height: 115%">Description</TD></TR>
<TR STYLE="vertical-align: top; background-color: rgb(204,255,204)">
    <TD STYLE="padding-right: 0; line-height: 115%; text-align: center">99.1</TD>
    <TD STYLE="padding-right: 0; line-height: 115%">Press Release dated March 1, 2012.</TD></TR>
</TABLE>
<P STYLE="font: 10pt/normal Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

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<P STYLE="font: 10pt/normal Times New Roman, Times, Serif; margin: 0; text-align: right">&nbsp;</P>

<P STYLE="font: 10pt/normal Times New Roman, Times, Serif; margin: 0; text-align: center"><B>SIGNATURES&nbsp;</B></P>

<P STYLE="font: 10pt/normal Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt/normal Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in">Pursuant to the requirements of the Securities
Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.</P>

<P STYLE="font: 10pt/normal Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 0; line-height: 115%">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="padding-right: 0; line-height: 115%; font-weight: bold"><B>ADVANCED CELL TECHNOLOGY, INC.</B></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 0; line-height: 115%">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="padding-right: 0; line-height: 115%">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 0; line-height: 115%">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="padding-right: 0; line-height: 115%">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 57%; padding-right: 0; line-height: 115%">&nbsp;</TD>
    <TD STYLE="width: 5%; padding-right: 0; line-height: 115%">By:</TD>
    <TD STYLE="width: 38%; border-bottom: black 1.5pt solid; padding-right: 0; line-height: 115%">/s/ Gary Rabin</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 0; line-height: 115%">&nbsp;</TD>
    <TD STYLE="padding-right: 0; line-height: 115%">&nbsp;</TD>
    <TD STYLE="padding-right: 0; line-height: 115%">Gary Rabin</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 0; line-height: 115%">&nbsp;</TD>
    <TD STYLE="padding-right: 0; line-height: 115%">&nbsp;</TD>
    <TD STYLE="padding-right: 0; line-height: 115%">Chief Executive Officer</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 0; line-height: 115%">&nbsp;Dated: March 2, 2012</TD>
    <TD COLSPAN="2" STYLE="padding-right: 0; line-height: 115%">&nbsp;</TD></TR>
</TABLE>
<P STYLE="font: 10pt/normal Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt/normal Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

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{"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": "12660362"}, "business-address": {"street1": "33 LOCKE DRIVE", "city": "MARLBOROUGH", "state": "MA", "zip": "01752", "phone": "508-756-1212"}, "mail-address": {"street1": "33 LOCKE DRIVE", "city": "MARLBOROUGH", "state": "MA", "zip": "01752"}, "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"}]}
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):
March 1, 2012
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)
33 Locke Drive, Marlborough, MA 01752
(Address of principal executive offices, including zip code)
(508) 756-1212
(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)
x
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 2.02 Results of Operations and Financial Condition.
On March 1, 2012, Advanced Cell Technology,
Inc. (the "Company") issued a press release announcing its financial results for the year ended December 31, 2011 and
certain other information, including certain information regarding a proposed reverse stock split. A copy of the Company's
press release announcing these financial results and certain other information is attached hereto as Exhibit 99.1.
Additional Information and Where to Find It
The Company has filed with the Securities and Exchange Commission
(the "SEC") a preliminary proxy statement in connection with the Company's proposal to effect a reverse stock
split. The Company plans to file a definitive proxy statement with the SEC and furnish such definitive proxy statement to stockholders
of record on the record date for the meeting at which stockholders will be asked to approve the proposed reverse stock split. The
Company, Mr. Rabin and certain of its directors, executive officers and other members of management may, under SEC rules, be deemed
"participants" in the solicitation of proxies from the Company's stockholders with respect to the proposed reverse
stock split. INVESTORS AND STOCKHOLDERS ARE ADVISED TO READ THE DEFINITIVE PROXY STATEMENT AND ANY OTHER RELEVANT DOCUMENTS FILED
WITH THE SEC WHEN THEY BECOME AVAILABLE BECAUSE THOSE DOCUMENTS WILL CONTAIN IMPORTANT INFORMATION ABOUT THE PROPOSED REVERSE STOCK
SPLIT ABOUT THE PROPOSAL AND OTHER IMPORTANT INFORMATION INCLUDING THOSE PERSONS WHO MAY BE DEEMED "PARTICIPANTS" IN
THE SOLICITATION. Investors and stockholders may obtain a free copy of the definitive proxy statement when it becomes available,
and other documents filed by the Company with the SEC, including the preliminary proxy statement, at the SEC's web site at
http://www.sec.gov. Free copies of the definitive proxy statement, when it becomes available, and the Company's other filings
with the SEC may also be obtained from the Company by directing a request to Advanced Cell Technology, Inc., 33 Locke Drive, Marlborough,
Massachusetts 01752, Attention: Secretary.
Item 9.01 Financial Statements and Exhibits.
Exhibit No.
Description
99.1
Press Release dated March 1, 2012.
SIGNATURES
Pursuant to the requirements of the Securities
Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.
ADVANCED CELL TECHNOLOGY, INC.
By:
/s/ Gary Rabin
Gary Rabin
Chief Executive Officer
Dated: March 2, 2012