Exelon

On March 28, 2022, Fabian Souza, Senior Vice President, Corporate Controller, and principal accounting officer of Exelon Corporation (“Exelon” or the “Company”), informed the Company that he will depart on May 10, 2022. Joseph R. Trpik Jr., currently serving as Senior Vice President, Chief Financial Officer, and Treasurer of Commonwealth Edison Company on an interim basis, will assume the role of Senior Vice President and Corporate Controller and become Exelon’s principal accounting officer effective as of May 10, 2022. In connection with his new role, effective as of May 1, 2022, Mr. Trpik’s compensation will include an annual base salary of $475,000, an annual incentive program target opportunity of 55% of his base salary, and a long-term incentive target valued at $500,000, consistent with the Exelon Long-Term Incentive Plan.

On February 8, 2022, Mayo Shattuck informed the Board of Directors (“Board”) that he will retire from the Board at the end of his term and not stand for election as a director of Exelon Corporation at the 2022 annual meeting of shareholders. The annual meeting is scheduled for April 26, 2022, at which time the size of the Board will be decreased from 10 to 9. Section 9 - Financial Statements and Exhibits

On October 29, 2021, Exelon Corporation (“Exelon”) announced the appointment of Calvin G. Butler, Jr. as its Senior Executive Vice President and Chief Operating Officer, effective immediately. In connection with his new role, Mr. Butler’s compensation will include an annual base salary of $900,000, an annual incentive program target opportunity of 100% of his base salary, and a long-term incentive target valued at $3,200,000, consistent with the Exelon Long-Term Incentive Plan. Long-term incentives (“LTI”) include performance share awards (accounting for sixty-seven percent of target LTI value) and restricted stock units (accounting for thirty-three percent of target LTI value). Payouts on both the annual incentive program and the performance share awards will be based on the achievement of pre-established performance targets. Mr.

On October 25, 2021, the board of directors of Exelon Corporation (“Exelon”) increased the size of the board to fourteen (14) and elected Carlos Gutierrez as a director, effective as of October 25, 2021, to serve until the 2022 annual meeting of shareholders. The Exelon board also appointed Mr. Gutierrez to its Audit, Compensation and Leadership Development, and Risk Committees. Mr. Gutierrez will receive Exelon’s standard compensation for its directors as disclosed in its proxy statement. Section 9 - Financial Statements and Exhibits

On October 1, 2021, Exelon Corporation (“Exelon”) announced that Joseph Dominguez, Chief Executive Officer of Commonwealth Edison Company (“ComEd”), was stepping down from his position and the board of directors of ComEd, effective immediately. Mr. Dominguez will assume the role of Chief Executive Officer of Exelon Generation Company, LLC (“Generation”) and will become the Chief Executive Officer of the new public company (to be called Constellation) which will own the competitive power generation and customer-facing retail energy business currently conducted by Generation once the previously announced separation of such businesses from Exelon’s six regulated electric and gas utilities business occurs. The completion of the separation is planned for the first quarter of 2022.

On July 29, 2021, Exelon Corporation (“Exelon”) filed a Current Report on Form 8-K to report the election of W. Paul Bowers to the board of directors effective July 27, 2021. At the time of that filing, the Exelon board had not yet determined which committees Mr. Bowers would be appointed to serve on. This Form 8-K/A is being filed to provide this information. Effective September 21, 2021, Mr. Bowers was appointed to serve on the Audit Committee and the Risk Committee. Section 9 - Financial Statements and Exhibits

O n July 27, 2021, the boa rd of directors of Exelon Corporation (“Exelon”) increased the size of the board to thirteen (13) and elected W. Paul Bowers as a director, effective as of July 27, 2021, to serve until the 2022 annual meeting of shareholders. The Exelon board has not yet determined which committees Mr. Bowers will be appointed to serve on. Mr. Bowers will receive Exelon’s standard compensation for its directors as disclosed in its proxy statement. Section 9 - Financial Statements and Exhibits

On March 1, 2021, Exelon announced that Senior Executive Vice President William A. Von Hoene Jr. will depart Exelon on March 31, 2021. Mr. Von Hoene’s role will be eliminated in connection with the planned corporate restructuring and separation of Exelon’s utilities and competitive businesses into two separate companies. As disclosed on June 10, 2020, Mr. Von Hoene had been limiting his engagement to address health issues and his departure will enable him to focus fully on his health. On June 4, 2020, Exelon entered into a letter agreement with Mr. Von Hoene that formalized retirement plans and provided standard severance benefits under Section 4 of Exelon’s Senior Management Severance Plan in the event Mr. Von Hoene’s employment ended prior to his planned retirement date of December 31, 2022, for any reason other than his voluntary resignation or termination by Exelon for cause.

On January 26, 2021, Nicholas DeBenedictis tendered his notice of retirement from Exelon Corporation’s Board of Directors (the “Board”) as he has reached the mandatory retirement age of 75 designated in Exelon’s Corporate Governance Principles. On January 26, 2021, the Board accepted Mr. DeBenedictis’s notice of retirement, which will become effective immediately prior to the 2021 annual meeting of shareholders scheduled for April 27, 2021, at which time the size of the Board will be decreased from 13 to 12. Section 9 - Financial Statements and Exhibits

On September 9, 2020, Kenneth Cornew, Senior Executive Vice President and Chief Commercial Officer, Exelon Corporation (Exelon), and President and Chief Executive Officer, Exelon Generation Company LLC (Generation), announced his intention to retire as of March 31, 2021. Mr. Cornew will continue to serve as Senior Executive Vice President until his retirement date. He will continue to receive his full level of compensation and benefits as previously disclosed in Exelon’s 2020 proxy statement. The company has agreed to have its relocation vendor purchase at an appraised value the Baltimore residence purchased by Mr. Cornew in connection with his relocation to Baltimore as Chief Executive Officer of Constellation.

On July 28, 2020, Exelon Corporation (“Exelon”) filed a Current Report on Form 8-K to report the appointment of Marjorie Rodgers Cheshire to the board of directors effective July 28, 2020. At the time of that filing, the Exelon board had not yet determined which committees Ms. Cheshire would be appointed to serve on. This Form 8-K/A is being filed to provide this information. Effective September 2, 2020, Ms. Cheshire was appointed to serve on the Compensation and Leadership Development Committee and the Risk Committee. Section 9 - Financial Statements and Exhibits

On July 28, 2020, the board of directors of Exelon Corporation (“Exelon”) increased the size of the board to thirteen (13) and elected Ms. Marjorie Rodgers Cheshire as a director, effective as of July 28, 2020, to serve until the 2021 annual meeting of shareholders. The Exelon board has not yet determined which committees Ms. Cheshire will be appointed to serve on. Ms. Cheshire will receive Exelon’s standard compensation for its directors as disclosed in its proxy statement. Section 9 - Financial Statements and Exhibits

On June 10, 2020, Exelon Corporation announced that Senior Executive Vice President William A. Von Hoene, Jr. will be temporarily limiting his engagement at Exelon to address health issues unrelated to the coronavirus pandemic. In addition, Exelon announced that it entered into a letter agreement on June 4, 2020, to formalize retirement planning aspects for Mr. Von Hoene. Under the letter agreement, Mr. Von Hoene will continue to serve in his current role until December 31, 2022, or such later date as mutually agreed upon by Exelon and Mr. Von Hoene. In the event Mr. Von Hoene’s employment ends prior to December 31, 2022 for any reason other than his voluntary resignation or termination by Exelon for cause, Mr. Von Hoene shall receive benefits provided under Section 4 of Exelon’s Senior Management Severance Plan. (d) Exhibits. Exhibit No.

On January 28, 2020, Admiral Richard W. Mies tendered his notice of retirement from Exelon Corporation’s Board of Directors (the “Board”) as he has reached the mandatory retirement age of 75 designated in Exelon’s Corporate Governance Principles. On January 28, 2020, the Board accepted Admiral Mies’s notice of retirement, which will become effective immediately prior to the 2020 annual meeting of shareholders scheduled for April 28, 2020, at which time the size of the Board will be decreased from 14 to 12. (d) Exhibits. Exhibit No. Description 101 Cover Page Interactive Data File - the cover page XBRL tags are embedded within the Inline XBRL document. 104 The cover page from this Current Report on Form 8-K, formatted as Inline XBRL.

On December 3, 2019, Mr. Stephen Steinour, a director of Exelon Corporation (“Exelon”), informed the board of directors that he will not stand for election as a director of Exelon at the 2020 annual meeting of shareholders. Section 9 - Financial Statements and Exhibits

On October 15, 2019, Exelon Corporation (“Exelon”) filed a Current Report on Form 8-K to report the appointment of Calvin G. Butler to the position of Interim Chief Executive Officer, Exelon Utilities. Effective December 2, 2019, Mr. Butler was appointed Senior Executive Vice President, Exelon and Chief Executive Officer, Exelon Utilities . Mr. Butler’s compensation will include an annual base salary of $700,000, an annual incentive program target opportunity representing 90% of base salary, and a long-term incentive program target valued at 310% of base salary. Consistent with Exelon’s Long-Term Incentive Plan, long-term incentives awards (“LTI”) include performance share awards (accounting for 67% of total LTI value) and restricted stock units (accounting for 33% of total LTI value).

On October 15, 2019, Anne Pramaggiore, Senior Executive Vice President, Exelon and Chief Executive Officer, Exelon Utilities, announced her decision to retire from her positions and the board of Commonwealth Edison, effective immediately. Exelon also announced the appointment of Calvin G. Butler, Chief Executive Officer of Baltimore Gas and Electric Company, to the position of Chief Executive Officer, Exelon Utilities on an interim basis, effective October 15, 2019. Mr. Butler, age 49, has served as Chief Executive Officer and as a director of Baltimore Gas and Electric Company, a subsidiary of Exelon, since 2014. He previously served as Senior Vice President, Regulatory and External Affairs for Baltimore Gas and Electric Company, since 2013. Mr. Butler is also a member of the Executive Committee of Exelon.

On August 30, 2019, the Board of Directors (the “Board”) of Exelon Corporation (“Exelon”) increased the size of the board to fourteen and elected Admiral John M. Richardson as a director, effective September 3, 2019, to serve until the 2020 annual meeting of shareholders. Admiral Richardson was also appointed to serve on the Finance and Risk Committee and the Generation Oversight Committee of the Board. Admiral Richardson will receive Exelon’s standard compensation for its directors as disclosed in its proxy statement. Section 9 - Financial Statements and Exhibits

On January 15, 2019, Mr. John W. Rogers, Jr., a director of Exelon Corporation (Exelon), informed the board of directors that he will not stand for election as a director of Exelon at the 2019 annual meeting of shareholders.

On September 24, 2018, Exelon Corporation (“Exelon”) filed a Current Report on Form 8-K to report the appointment of Laurie Brlas to the board of directors effective October 1, 2018. At the time of that filing, the Exelon board had not yet determined which committees Ms. Brlas would be appointed to serve on. This Form 8-K/A is being filed to provide this information. Effective December 4, 2018, Ms. Brlas was appointed to serve on the Audit Committee and the Finance and Risk Committee. * * * * *

On September 24, 2018, the board of directors of Exelon Corporation (“Exelon”) increased the size of the board to fourteen (14) and elected Ms. Laurie Brlas as a director, effective as of October 1, 2018 to serve until the 2019 annual meeting of shareholders. The Exelon board has not yet determined which committees Ms. Brlas will be appointed to serve on. Ms. Brlas will receive Exelon’s standard compensation for its directors as disclosed in its proxy statement. Section 9 - Financial Statements and Exhibits

On July 4, 2018, the board of directors of Exelon Corporation (“Exelon”) elected Mr. John F. Young as a director, effective as of July 9, 2018 until the 2019 annual meeting of shareholders. Mr. Young was appointed to serve on the Finance and Risk Committee and the Generation Oversight Committee of the board of directors. Mr. Young will receive Exelon’s standard compensation for its directors as disclosed in its proxy statement. Section 9 - Financial Statements and Exhibits

On May 8, 2018, Exelon Corporation (Exelon) and Commonwealth Edison Company (ComEd) announced the following management changes. • Jonathan Thayer, Senior Executive Vice President and Chief Financial Officer will cease serving as Exelon’s principal financial officer on May 8, 2018, when he will assume the position of Chief Transformation Officer. • Joseph Nigro is appointed to the position of Senior Executive Vice President and Chief Financial Officer effective on May 8, 2018. Mr. Nigro, age 53, has been Executive Vice President, Exelon and Chief Executive Officer of Constellation since May 28, 2013, and also served as Senior Vice President, Portfolio Management and Strategy, since March 2011. • Denis O’Brien, Senior Executive Vice President, Exelon and Chief Executive Officer, Exelon Utilities will cease to serve as CEO of Exelon Utilities on June 1, 2018.

On February 20, 2018, Ms. Nancy L. Gioia, a director of Exelon Corporation (Exelon), informed the board of directors that she will not stand for election as a director of Exelon at the 2018 annual meeting of shareholders. * * * * * This report contains certain

On September 26, 2017, Exelon Corporation (Exelon) announced that Duane M. DesParte, Senior Vice President and Corporate Controller, its principal accounting officer, will retire from Exelon on March 2, 2018 or such other date as may be mutually agreed. On September 26, 2017, Exelon announced the appointment of Fabian E. Souza to the position of Senior Vice President and Deputy Controller effective in November 2017. He will assume the role of Senior Vice President and Corporate Controller and become Exelon’s principal accounting officer upon Mr. DesParte’s retirement. Mr. Souza, age 46 has been the Vice President, Controller and Chief Accounting Officer of The AES Corporation (AES) since June 1, 2015. Mr.

On January 25, 2016, Mr. John A. Canning, Jr., a director of Exelon Corporation (Exelon) informed the board of directors that he will not stand for election as a director of Exelon at the 2016 annual meeting of shareholders. On January 26, 2016, the board of directors of Exelon elected Ms. Nancy L. Gioia as a director, effective as of February 1, 2016, to fill the vacancy resulting from the retirement on December 31, 2015 of Dr. William C. Richardson, to serve until the 2016 annual meeting of shareholders. Ms. Gioia has been appointed to serve on the Finance and Risk and Generation Oversight committees of the board of directors. Ms. Gioia will receive Exelon’s standard compensation for its directors as disclosed in its proxy statement. * * * * * Cautionary Statements Regarding Forward-Looking Information This report contains certain

On December 31, 2015, Dr. William C. Richardson, a director of Exelon Corporation (Exelon), retired from the board of directors of Exelon in accordance with Exelon’s mandatory retirement policy as set forth in its Corporate Governance Principles. * * * * * Cautionary Statements Regarding Forward-Looking Information This report contains certain