(d) No Material Adverse Effect. Since the date of this Agreement, no change, event,
fact, development, condition, circumstance, occurrence or effect shall have occurred that has had, or would reasonably be expected to have, individually or together with other changes, events, occurrences, facts, developments, circumstances,
conditions or effects, a material adverse effect on (i) the business, condition (financial or otherwise), assets, properties, liabilities or results of operations of the Company and its Subsidiaries, taken as a whole considered on a standalone
basis, or (ii) the ability of the Seller, on a timely basis, to perform its obligations under this Agreement or consummate the Purchase (each, a Material Adverse Effect); provided, however, that in the
case of clause (i), none of the following shall be taken into account in determining whether there is a Material Adverse Effect: (A) any change, event, occurrence, fact, development, circumstance, condition or effect generally applicable to
(x) the U.S. economy, (y) the markets or industries in which the Company or any of its Subsidiaries operates or (z) any business, financial, political, legislative or market conditions (including changes generally in prevailing
interest rates, currency exchange rates, credit markets, commodity markets or other financial, banking, or securities markets (including any disruption thereof or any fluctuation in prices or trading volumes of any security or any market index)),
(B) any change, event, occurrence, fact, development, circumstance, condition or effect arising directly or indirectly from or otherwise relating to fluctuations in the value of any currency, (C) any change, event, occurrence, fact,
development, circumstance, condition or effect arising directly or indirectly from or otherwise relating to any acts of God (including earthquakes, hurricanes, floods, or other natural disasters), the commencement, occurrence, continuation, or
intensification of any war (whether or not declared), national or international calamity, geopolitical conditions, sabotage or terrorism (including cyberattacks, cyber intrusions, cyberterrorism or other cybersecurity breaches), pandemic or epidemic
(including COVID-19) or other outbreaks of diseases or quarantine restrictions, or any other similar event, (D) any change, event, occurrence, fact, development, circumstance, condition or effect arising
directly or indirectly from or otherwise relating to any change in, or any compliance with any applicable Law or U.S. generally accepted accounting principles, including regulatory changes generally affecting the industries in which the Company or
any of its Subsidiaries operates, in each case after the date hereof, (E) any (x) change in the market price or trading volume of the common stock of Vistra Corp., or (y) material adverse effect on the business, condition (financial or
otherwise), assets, properties, liabilities or results of operations of Vistra Corp. or its Subsidiaries (other than the Company and its Subsidiaries), except, in each case, to the extent that the underlying cause of such change or effect is
directly related to the Company and its Subsidiaries (in which case such underlying cause may, to the extent not otherwise expressly excluded by this definition of Material Adverse Effect, be considered and taken into account in determining whether
there has been a Material Adverse Effect), (F) any change, event, occurrence, fact, development, circumstance, condition or effect resulting from the execution of this Agreement or announcement or pendency of the transactions contemplated hereby,
(G) the failure of the Company or any of its Affiliates to meet internal or published expectations or projections of the results of operations of the Company or any of its Subsidiaries (except that the underlying cause of any such failure may,
to the extent not otherwise expressly excluded by this definition of Material Adverse Effect, be considered and taken into account in determining whether there has been a Material Adverse Effect), (H) any downgrade in the credit rating of the
Company or any of its Affiliates, and (I) any labor strike, stoppage, slowdown, lockout, labor dispute, or the loss, absence, illness, disability, death, quarantine, diminished productivity or work schedule, termination, layoff or furlough of
employees, independent contractors, consultants or other
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