Risk Factors Update Summary

• Changes in estimates related to revenues and costs under customer contracts could result in a reduction or elimination of revenues or profits and the recognition of losses. This change might result in significant financial impact.
• Loss of, or conflicts with, customers could make an acquisition of Quanta more difficult. This change highlights potential challenges in expanding business.
• Authorization to issue "blank check" preferred stock could lead to dilution of existing shareholders.
• The loss of certain customers could result in reduced or discontinued future work, impacting financial performance. This change emphasizes revenue risk.
• Shareholder classification as an interested stockholder may impact corporate governance decisions.
• Failure to comply with environmental laws could lead to significant liabilities and reputational harm. This change highlights potential legal and financial risks.
• Increased labor costs due to growth and complexity could impact profitability. This change indicates potential challenges in managing workforce costs.
• Changes in tax laws or positions could adversely affect financial results. This change underscores potential financial volatility due to tax implications.
• Increased cybersecurity risks and remote working arrangements may threaten information security. This change highlights evolving cybersecurity challenges.