<SEC-DOCUMENT>0001214659-25-007382.txt : 20250512
<SEC-HEADER>0001214659-25-007382.hdr.sgml : 20250512
<ACCEPTANCE-DATETIME>20250512150401
ACCESSION NUMBER:		0001214659-25-007382
CONFORMED SUBMISSION TYPE:	PX14A6G
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20250512
DATE AS OF CHANGE:		20250512
EFFECTIVENESS DATE:		20250512

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			General Motors Co
		CENTRAL INDEX KEY:			0001467858
		STANDARD INDUSTRIAL CLASSIFICATION:	MOTOR VEHICLES & PASSENGER CAR BODIES [3711]
		ORGANIZATION NAME:           	04 Manufacturing
		EIN:				270756180
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		PX14A6G
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34960
		FILM NUMBER:		25934325

	BUSINESS ADDRESS:	
		STREET 1:		300 RENAISSANCE CENTER
		CITY:			DETROIT
		STATE:			MI
		ZIP:			48265-3000
		BUSINESS PHONE:		313.667.1500

	MAIL ADDRESS:	
		STREET 1:		300 RENAISSANCE CENTER
		CITY:			DETROIT
		STATE:			MI
		ZIP:			48265-3000

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Green Century Capital Management, Inc.
		CENTRAL INDEX KEY:			0001491252
		ORGANIZATION NAME:           	
		EIN:				043126146
		STATE OF INCORPORATION:			MA
		FISCAL YEAR END:			0630

	FILING VALUES:
		FORM TYPE:		PX14A6G

	BUSINESS ADDRESS:	
		STREET 1:		114 STATE STREET, SUITE 200
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02109
		BUSINESS PHONE:		617-482-0800

	MAIL ADDRESS:	
		STREET 1:		114 STATE STREET, SUITE 200
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02109
</SEC-HEADER>
<DOCUMENT>
<TYPE>PX14A6G
<SEQUENCE>1
<FILENAME>z512250px14a6g.htm
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<P STYLE="margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B>NAME OF REGISTRANT:</B> General Motors Company</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B>NAME OF PERSON RELYING ON EXEMPTION:</B> Green Century Capital Management,
Inc.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B>ADDRESS OF PERSON RELYING ON EXEMPTION:</B> 114 State Street, Suite
200, Boston, MA 02109</P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">The following is an amended version of the exempt
solicitation previously filed on EDGAR on April 24, 2025. The change to the solicitation is the addition of language required by Securities
and Exchange Commission (&ldquo;SEC&rdquo;) Compliance and Disclosure Interpretation (&ldquo;C&amp;DI&rdquo;) 126.06 clarifying that the
filer does not beneficially own more than $5 million in securities of the Registrant company.</P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B>Written materials are submitted pursuant to Rule 14a-6(g)(1) promulgated
under the Securities Exchange Act of 1934.&nbsp;Green Century Capital Management does not beneficially own more than $5 million of securities
in the Registrant company. Submission is not required of this filer under the terms of the Rule but is made voluntarily in the interest
of public disclosure and consideration of these important issues.</B></P>

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

<DIV STYLE="padding: 1pt 4pt 1pt 0in; border: black 1pt solid">

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Shareholder Proposal No. 5 on General Motors
Company's 2025 Proxy Statement:</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>REPORT ON SUPPLY CHAIN GHG EMISSIONS REDUCTION
STRATEGIES</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>General Motors Company Symbol: GM</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">Filed by: Green Century Capital Management, Inc.</P>

</DIV>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Green Century Capital Management, Inc. seeks your support for the proposal
filed at General Motors Company (hereby referred to as &ldquo;GM&rdquo; or the &ldquo;Company&rdquo;) on behalf of GM stockholder, Amy
Floyd (collectively, the &ldquo;Proponent&rdquo;), in the 2025 proxy statement. The proposal asks the Company to disclose if and how it
plans to align its supply chain greenhouse gas (GHG) emissions reduction strategies with its zero emissions ambition. The Proponent believes
such disclosures would increase transparency of the Company&rsquo;s plans to address supply chain GHG emissions in line with its zero
emissions ambition.</P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; background-color: white"><B>RESOLVED: </B>Shareholders request that
General Motors, at reasonable expense and omitting proprietary information, issue a report describing if and how it plans to align its
supply chain GHG emissions reduction strategies with its zero emissions ambition.</P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; background-color: white"><B>SUPPORTING STATEMENT:</B> The essential
purpose of this proposal is for GM to produce forward-looking disclosures demonstrating whether its existing policies and actions are
aligned with its zero emissions ambition, and if not, to provide additional strategies and metrics accordingly. In developing the disclosures,
proponents recommend:</P>

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

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; background-color: white"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.25in"></TD><TD STYLE="width: 0.25in"><FONT STYLE="font-family: Symbol">&middot;</FONT></TD><TD><FONT STYLE="font-family: Times New Roman, Times, Serif">Taking into consideration approaches used by groups such as ResponsibleSteel
and SteelZero;</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; background-color: white"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.25in"></TD><TD STYLE="width: 0.25in"><FONT STYLE="font-family: Symbol">&middot;</FONT></TD><TD><FONT STYLE="font-family: Times New Roman, Times, Serif">Describing how GM intends to meet its commitment to purchase at least 10%
near-zero carbon steel and low carbon aluminum by 2030; and</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; background-color: white"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.25in"></TD><TD STYLE="width: 0.25in"><FONT STYLE="font-family: Symbol">&middot;</FONT></TD><TD><FONT STYLE="font-family: Times New Roman, Times, Serif">Analyzing the financial and climate-related impacts on GM&rsquo;s business
of a range of low-carbon steel adoption scenarios.</FONT></TD></TR></TABLE>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B>RATIONALE FOR A &ldquo;YES&rdquo; VOTE</B></P>

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

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.25in"></TD><TD STYLE="width: 0.25in">1.</TD><TD><B>Supply Chain Risk </B>&ndash; To achieve zero emissions, GM will need to significantly scale up procurement of low-carbon steel
and aluminum. Given the constrained supply of these materials, disclosure of a clear plan would signal demand and reduce the risk of supply
chain disruption.</TD></TR></TABLE>

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

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

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

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

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

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.25in"></TD><TD STYLE="width: 0.25in">2.</TD><TD><B>Competitive Risk </B>&ndash; Peers, particularly in Europe, have disclosed more robust supply chain GHG emissions mitigation steps
and plans. Consumers in certain key markets may choose to buy vehicles from companies that demonstrate leading sustainability practices.</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.25in"></TD><TD STYLE="width: 0.25in">3.</TD><TD><B>Regulatory Risk</B> &ndash; Emerging EU regulations mandate carbon footprint reporting and maximum thresholds for batteries, as
well as a carbon levy on the import of certain products, including steel. These and similar new laws will increase costs for high-emissions
supply chain materials.</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.25in"></TD><TD STYLE="width: 0.25in">4.</TD><TD><B>Failure to Meet Investor Expectations</B> &ndash; Investors increasingly expect companies to disclose a comprehensive plan of action
to achieve their climate goals. GM should produce a plan to mitigate supply chain GHG emissions in line with its zero emissions ambition.</TD></TR></TABLE>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; border: black 1pt solid"><B>This is not a solicitation
of authority to vote your proxy. Please DO NOT send us your proxy card; Green Century Capital Management, Inc. is not able to vote your
proxies, nor does this communication contemplate such an event. Green Century Capital Management, Inc. urges shareholders to vote for
Shareholder Proposal No. 5 following the instruction provided on the management&rsquo;s proxy mailing.</B></P>

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

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

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B>In its 2023 Sustainability Report entitled &ldquo;Journey to Zero,&rdquo;
GM sets out a vision of a world with zero crashes, zero emissions and zero congestion. </B>While the Company has committed to achieving
carbon neutrality in global products and operations by 2040 in line with this zero emissions vision, it does not disclose a target or
plans to mitigate supply chain emissions, which represent 16% of its contribution to climate change.<SUP>1</SUP></P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B>This proposal makes the commonsense request that GM&rsquo;s climate
transition plan fully address its supply chain GHG emissions. </B>A comprehensive climate transition plan describes the strategies, milestones,
and timelines for the Company to deliver on its decarbonization targets &ndash; which are as necessary for GM's supply chain as they are
for its other emissions sources.</P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Notably, GM has disclosed some actions it is taking to reduce supply
chain GHG emissions,<SUP>2</SUP> such as:</P>

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

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.25in"></TD><TD STYLE="width: 0.25in"><FONT STYLE="font-family: Symbol">&middot;</FONT></TD><TD><FONT STYLE="font-family: Times New Roman, Times, Serif">Inviting Tier I suppliers to commit to carbon neutrality for Scope 1 and
Scope 2 emissions relevant to products or services they provide GM</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.25in"></TD><TD STYLE="width: 0.25in"><FONT STYLE="font-family: Symbol">&middot;</FONT></TD><TD><FONT STYLE="font-family: Times New Roman, Times, Serif">Monitoring participating global Tier I and Tier II suppliers&rsquo; sustainability
performance</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.25in"></TD><TD STYLE="width: 0.25in"><FONT STYLE="font-family: Symbol">&middot;</FONT></TD><TD><FONT STYLE="font-family: Times New Roman, Times, Serif">Maintaining membership in the First Movers Coalition, demonstrating a commitment
to procuring 10% low-carbon steel and aluminum by 2030</FONT></TD></TR></TABLE>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B>While these steps are likely to somewhat reduce supply chain emissions,
they fall short of targets and a plan to effectuate GM&rsquo;s zero emissions vision.</B> Producing the report requested by this proposal
would help assure investors that GM has a plan to mitigate these emissions and related supply chain, competitive and regulatory risks
in line with investor expectations.</P>

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

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

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

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><SUP>1</SUP> https://www.gm.com/content/dam/company/docs/us/en/gmcom/company/GM_2023_SR.pdf,
p10</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-size: 10pt"><SUP>2</SUP></FONT> h<FONT STYLE="font-size: 10pt">ttps://www.gm.com/content/dam/company/docs/us/en/gmcom/company/GM_2023_SR.pdf</FONT></P>

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

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

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

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

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.25in"></TD><TD STYLE="width: 0.25in"><B>I.</B></TD><TD><B>SUPPLY CHAIN RISK </B></TD></TR></TABLE>

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


<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Primary aluminum production in the U.S. is virtually non-existent,
while North American aluminum consumption by automakers is expected to grow 24% between 2020 and 2030 for light-duty vehicles.<SUP>3</SUP>
Steel supply is similarly constrained, and no primary near-zero steel is currently produced in the United States, though several initiatives
are in process.<SUP>4</SUP></P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">To achieve zero emissions, GM will need to significantly scale up procurement
of low-carbon steel and aluminum from its current target of 10% procurement by 2030. Given the constrained supply of these materials,
disclosure of a clear plan, including updated targets, would signal demand, lock in supply of scarce resources, and minimize potential
supply chain disruption.</P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">To further signal demand for low-carbon supply chain materials, GM
could include, in a supply chain GHG emissions mitigation plan, such actions as:</P>

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

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.25in"></TD><TD STYLE="width: 0.25in"><FONT STYLE="font-family: Symbol">&middot;</FONT></TD><TD><FONT STYLE="font-family: Times New Roman, Times, Serif">Setting supply chain GHG emissions reduction targets</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.25in"></TD><TD STYLE="width: 0.25in"><FONT STYLE="font-family: Symbol">&middot;</FONT></TD><TD><FONT STYLE="font-family: Times New Roman, Times, Serif">Securing and/or scaling up agreements with near-zero steel and low-carbon
aluminum suppliers</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.25in"></TD><TD STYLE="width: 0.25in"><FONT STYLE="font-family: Symbol">&middot;</FONT></TD><TD><FONT STYLE="font-family: Times New Roman, Times, Serif">Joining initiatives such as ResponsibleSteel, SteelZero, the RMI Sustainable
Steel Buyers Platform and the Aluminum Stewardship Initiative, which help the steel and aluminum industries transition to low-carbon energy
sources and manufacturing processes. </FONT></TD></TR></TABLE>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Outlining such steps or others GM deems appropriate in a disclosure
detailing how the Company plans to mitigate supply chain GHG emissions in line with its zero emissions ambition would help ensure the
volume of near-zero steel, low-carbon aluminum, and other supply chain materials necessary to achieve it, thereby mitigating supply chain
risk.</P>

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

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

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.25in"></TD><TD STYLE="width: 0.25in"><B>II.</B></TD><TD><B>COMPETITVE RISK </B></TD></TR></TABLE>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">GM lags competitors that are mitigating supply chain GHG emissions
in line with their climate goals:</P>

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

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 18pt"></TD><TD STYLE="width: 10pt"><FONT STYLE="font-family: Symbol">&middot;</FONT></TD><TD><FONT STYLE="font-family: Times New Roman, Times, Serif">Volkswagen has set supply chain GHG emissions reduction targets<SUP>5</SUP>
and BMW includes detailed supply chain emissions reductions in its Scope 3 climate targets.<SUP>6</SUP></FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 18pt"></TD><TD STYLE="width: 10pt"><FONT STYLE="font-family: Symbol">&middot;</FONT></TD><TD><FONT STYLE="font-family: Times New Roman, Times, Serif">Volvo and Mercedes-Benz have taken steps to improve the sustainability of
their steel supply chains by participating in the steel plant certification standard, ResponsibleSteel.<SUP>7</SUP></FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 18pt"></TD><TD STYLE="width: 10pt"><FONT STYLE="font-family: Symbol">&middot;</FONT></TD><TD><FONT STYLE="font-family: Times New Roman, Times, Serif">Volvo and Polestar have joined SteelZero, pledging to procure 50% lower emission
steel by 2030 and 100% by 2050.<SUP>8</SUP></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt Symbol; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Symbol; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Symbol; margin: 0pt 0">_____________________________</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><SUP>3</SUP> https://www.statista.com/statistics/496185/pounds-of-aluminum-per-car-in-north-america/</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-size: 10pt"><SUP>4</SUP></FONT> h<FONT STYLE="font-size: 10pt">ttps://www.canarymedia.com/articles/clean-industry/us-pledges-up-to-1b-for-two-pioneering-green-steel-projects</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><SUP>5</SUP> https://www.volkswagen-group.com/en/publications/more/group-sustainability-report-2023-2674</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-size: 10pt"><SUP>6</SUP></FONT> h<FONT STYLE="font-size: 10pt">ttps://www.bmwgroup.com/content/dam/grpw/websites/bmwgroup_com/ir/downloads/en/2025/bericht/BMW-Group-Report-2024-en.pdf</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-size: 10pt"><SUP>7</SUP></FONT> h<FONT STYLE="font-size: 10pt">ttps://www.responsiblesteel.org/members-and-associates</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-size: 10pt"><SUP>8</SUP></FONT> h<FONT STYLE="font-size: 10pt">ttps://www.theclimategroup.org/steelzero-members</FONT></P>

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

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

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

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 18pt"></TD><TD STYLE="width: 10pt"><FONT STYLE="font-family: Symbol">&middot;</FONT></TD><TD><FONT STYLE="font-family: Times New Roman, Times, Serif">BMW,<SUP>9</SUP> Mercedes,<SUP>10</SUP> Volvo,<SUP>11</SUP> Porsche,<SUP>12</SUP>
Volkswagen<SUP>13</SUP> and others have signed offtake agreements for near-zero emissions steel from suppliers such as H2 Green Steel
and Thyssenkrupp Steel.</FONT></TD></TR></TABLE>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Consumers may choose to buy vehicles from companies that implement
leading sustainability practices. GM&rsquo;s lack of a plan to fully mitigate its contribution to climate change may become a factor in
customer purchasing decisions, particularly in European markets where 65% of the population would contribute 1% of their household income
every month to fight global warming.<SUP>14</SUP></P>

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

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

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<TD STYLE="width: 0.25in"></TD><TD STYLE="width: 0.25in"><B>III.</B></TD><TD><B>REGULATORY RISK</B></TD></TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">mailto:ekanarick@greencentury.com</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">New regulations are driving up the costs of relying upon high-emissions
supply chain materials such as steel, aluminum, and batteries. GM could mitigate the costs associated with these emerging regulations
by clarifying and accelerating its efforts to decarbonize its supply chain.</P>

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

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 18pt"></TD><TD STYLE="width: 10pt"><FONT STYLE="font-family: Symbol">&middot;</FONT></TD><TD><FONT STYLE="font-family: Times New Roman, Times, Serif"><B>Carbon-intensive steel costs are predicted to rise in the EU market</B>.<SUP>15</SUP>
Under the EU&rsquo;s Emissions Trading System <B>(ETS)</B>, European steel producers will have reduced emissions allowances through 2034
and may be penalized for exceeding them. Meanwhile, materials, including steel, imported into the EU will be subject to a carbon levy
under the Carbon Border Adjustment Mechanism <B>(CBAM)</B> starting in 2026.<SUP>16</SUP> Both ETS and CBAM will require tracking and
payments for emissions associated with imports.</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 18pt"></TD><TD STYLE="width: 10pt"><FONT STYLE="font-family: Symbol">&middot;</FONT></TD><TD><FONT STYLE="font-family: Times New Roman, Times, Serif"><B>The EU&rsquo;s Corporate Sustainability Due Diligence Directive (CSDDD)
</B>requires companies to address adverse environmental impacts in their value chain.<SUP>17</SUP> Under this legislation, GM will be
subject to reporting requirements for its value chain and may be vulnerable to fines and lawsuits if suppliers continue to cause environmental
harm.<SUP>18</SUP></FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 18pt"></TD><TD STYLE="width: 10pt"><FONT STYLE="font-family: Symbol">&middot;</FONT></TD><TD><FONT STYLE="font-family: Times New Roman, Times, Serif"><B>The EU Batteries Regulation</B> mandates that batteries in the EU market,
including those used in electric vehicles, will need to comply with EU sustainability priorities. This will entail carbon footprint declarations
and maximum life cycle carbon footprint thresholds.<SUP>19</SUP></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt Symbol; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Symbol; margin: 0pt 0">_____________________________</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-size: 10pt"><SUP>9</SUP></FONT> h<FONT STYLE="font-size: 10pt">ttps://stegra.com/news-and-stories/h2-green-steel-and-bmw-group-sign-final-agreement-on-delivery-of-co2-reduced-steel</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-size: 10pt"><SUP>10</SUP></FONT> h<FONT STYLE="font-size: 10pt">ttps://stegra.com/news-and-stories/mercedes-benz-and-h2-green-steel-announce-agreements-in-both-europe-and-north-america</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-size: 10pt"><SUP>11</SUP></FONT> h<FONT STYLE="font-size: 10pt">ttps://stegra.com/news-and-stories/h2-green-steel-collaborates-with-volvo-group-for-supply-of-near-zero-emissions-steel</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-size: 10pt"><SUP>12</SUP></FONT> h<FONT STYLE="font-size: 10pt">ttps://newsroom.porsche.com/en/2023/sustainability/porsche-co2-reduced-steel-in-sports-cars-34225.html</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><SUP>13</SUP> https://www.volkswagen-group.com/en/press-releases/green-steel-for-sustainable-mobility-thyssenkrupp-steel-and-volkswagen-groups-new-collaboration-18757</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><SUP>14</SUP> <FONT STYLE="color: #333333">https://www.theguardian.com/environment/2025/apr/22/activate-climate-silent-majority-support-supercharge-action</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-size: 10pt"><SUP>15</SUP></FONT> h<FONT STYLE="font-size: 10pt">ttps://www.spglobal.com/commodity-insights/en/news-research/blog/metals/082423-eu-steel-emissions-to-see-higher-penalties-as-free-allowances-get-taken-away</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-size: 10pt"><SUP>16</SUP></FONT> h<FONT STYLE="font-size: 10pt">ttps://customs-taxation.learning.europa.eu/pluginfile.php/34635/mod_resource/content/2/Course%20Takeaways.pdf</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><sup>17</sup> https://commission.europa.eu/business-economy-euro/doing-business-eu/sustainability-due-diligence-responsible-</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">business/corporate-sustainability-due-diligence_en</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-size: 10pt"><SUP>18</SUP></FONT> h<FONT STYLE="font-size: 10pt">ttps://cdpturkey.sabanciuniv.edu/en/content/cdp-prepares-companies-eus-corporat-sustainability-due-diligence-directive-csddd</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><SUP>19</SUP> https://www.trade.gov/market-intelligence/eu-batteries-regulation-2023</P>

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

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

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

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

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<TD STYLE="width: 18pt"></TD><TD STYLE="width: 10pt"><FONT STYLE="font-family: Symbol">&middot;</FONT></TD><TD><FONT STYLE="font-family: Times New Roman, Times, Serif"><B>China&rsquo;s Carbon Emission Trading Market </B>will be updated to include
steel and aluminum. Suppliers that exceed their emissions allocations will face higher costs, which will likely be passed along the value
chain.<SUP>20</SUP></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"></P>

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

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<TD STYLE="width: 0.25in"></TD><TD STYLE="width: 0.25in"><B>IV.</B></TD><TD><B>FAILURE TO MEET INVESTOR EXPECTATIONS</B></TD></TR></TABLE>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">A climate transition plan demonstrates to capital markets and stakeholders
that a company has a forward-looking plan, with milestones and timelines, for achieving its climate goals.<SUP>21</SUP></P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">GM's public reporting does not disclose if or how it has made progress
toward reducing supply chain GHG emissions, or how it plans to reduce them in line with its zero emissions ambition. GM is therefore misaligned
with best practices outlined by leading climate-disclosure organizations, including The Transition Plan Taskforce (TPT) and the Taskforce
for Climate-related Financial Disclosures (TCFD), which recommend companies report on current and planned initiatives to address material
sources of GHG emissions, as well as metrics to monitor and track progress.<SUP>22</SUP></P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">As the World Resources Institute notes, &ldquo;we can no longer rely
on science-based target setting as our only indicator of progress. The bar for corporate climate leadership has risen. Now we need to
see the plan of action.&rdquo;<SUP>23</SUP> Investors increasingly expect disclosure of a comprehensive climate transition plan to achieve
climate goals.<SUP>24</SUP> It's time for GM to enhance its plan accordingly.</P>

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

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

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

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<TD STYLE="width: 0.25in"></TD><TD STYLE="width: 0.25in"><B>V.</B></TD><TD><B>CONCLUSION</B></TD></TR></TABLE>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">In effect, this proposal makes the commonsense request that GM&rsquo;s
climate transition plan fully address GHG emissions from its supply chain. A climate transition plan describes the strategies, milestones,
and timelines for the Company to deliver on its decarbonization targets &ndash; which are as necessary for GM&rsquo;s supply chain as
they are for its other emissions sources.</P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">GM recognizes that to make the biggest impact on climate change, it
needs to focus on investing in programs that reduce GHG emissions.<SUP>25</SUP> Disclosing plans to mitigate supply chain GHG emissions
in line with GM's zero emissions ambition will help assure investors that the Company has a comprehensive plan to address associated supply
chain, competitive, and regulatory risks in line with investor expectations.</P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B>Shareholders are urged to vote FOR proposal No. 5: REPORT ON SUPPLY
CHAIN GHG EMISSIONS REDUCTION STRATEGIES.</B></P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><I>For questions regarding this proposal, please contact Annie Sanders,
Green Century Capital Management, asanders@greencentury.com.</I></P>

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

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

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><SUP>20</SUP> https://www.reuters.com/sustainability/china-expand-carbon-trading-market-steel-cement-aluminium-2025-03-26/</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><SUP>21</SUP> https://cdn.cdp.net/cdp-production/cms/reports/documents/000/007/783/original/CDP_Climate_Transition_Plans_2024.pdf?1720436354</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><SUP>22</SUP> https://www.ifrs.org/content/dam/ifrs/knowledge-hub/resources/tpt/disclosure-framework-oct-2023.pdf,
p28; https://assets.bbhub.io/company/sites/60/2021/07/2021-Metrics_Targets_Guidance-1.pdf, p42</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-size: 10pt"><SUP>23</SUP></FONT> h<FONT STYLE="font-size: 10pt">ttps://www.wri.org/insights/rising-bar-corporate-climate-action</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><SUP>24</SUP> https://theinvestoragenda.org/blog/review-of-230-investors-finds-icaps-are-becoming-common-practice/</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><SUP>25</SUP> https://www.gm.com/content/dam/company/docs/us/en/gmcom/company/GM_2023_SR.pdf,
p10</P>

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

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; border: black 1pt solid"><B>This is not a solicitation
of authority to vote your proxy. Please DO NOT send us your proxy card; Green Century Capital Management, Inc. is not able to vote your
proxies, nor does this communication contemplate such an event. Green Century Capital Management, Inc. urges shareholders to vote for
Shareholder Proposal No. 5 following the instruction provided on the management&rsquo;s proxy mailing.</B></P>

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