619 material Form 8-K filings that 507 companies we cover made with the SEC in December 2025, each read and summarized by AI: what happened, the key figures, whether it reads positive or negative for shareholders, and how big a deal it is (impact 1-5). All of them were written later, when past filings were added: a selection, not every 8-K of the month (see the note below).
Murphy USA said CEO R. Andrew Clyde will retire as CEO and from the Board effective December 31, 2025, with President and COO Mindy K. West becoming CEO and a Board member on January 1, 2026. The filing also details a severance protection agreement for West and a transition agreement for Clyde, which keeps him employed through February 28, 2026 and as an advisor through February 28, 2027.
R. Andrew Clyde retires as CEO and director effective December 31, 2025, as previously announced on October 29, 2025.
Mindy K. West becomes CEO and a Board member effective January 1, 2026.
West's severance protection agreement, dated December 11, 2025, pays two times salary plus target bonus on a termination without cause or for good reason within 24 months after a change in control.
Clyde's transition agreement runs through February 28, 2026 as an employee, then as an advisor through February 28, 2027.
MGIC Investment Corporation disclosed that board member Analisa M. Allen notified the company on December 11, 2025 that she intends to resign from its Board of Directors effective January 31, 2026. The filing states her decision was not due to any disagreement with the company's operations, policies or practices.
Analisa M. Allen notified MGIC on December 11, 2025 of her intent to resign from the Board
Resignation is effective January 31, 2026
The filing states there was no disagreement on operations, policies or practices
Booz Allen Hamilton's Chief Financial Officer, Matthew Calderone, informed the company on December 11, 2025 that he will resign effective February 1, 2026, to pursue another opportunity outside the industry. The company has started a search for a permanent CFO, and Chief Operating Officer Kristine Martin Anderson will serve as interim CFO in the meantime.
Matthew A. Calderone, EVP and CFO, resigns effective February 1, 2026
Notice given to the company on December 11, 2025
Kristine Martin Anderson, EVP and COO, will act as interim CFO until a permanent replacement is named
Lumentum added Thad Trent, executive vice president and chief financial officer of ON Semiconductor (onsemi), to its board effective December 15, 2025, and to the Audit Committee. The appointment brings the board to nine members and adds a finance executive with prior CFO experience at Cypress Semiconductor.
Thad Trent appointed to the Board effective immediately on December 15, 2025, with a term expiring at the 2026 annual meeting
Trent also joined the Audit Committee of the Board
Trent has been CFO of onsemi since February 2021 and was CFO of Cypress Semiconductor from June 2014 until its sale to Infineon in April 2020
Trent will receive cash and equity compensation under the Outside Director Compensation Policy and will enter the standard indemnification agreement
Ameren's board elected Jamie L. Engstrom, Caterpillar's global chief information officer, as a director, with her term starting January 1, 2026. She was also appointed to the Audit and Risk Committee and the Cybersecurity and Digital Technology Committee, and the filing reports no arrangement with Ameren regarding her selection.
Board elected Engstrom on December 12, 2025; term begins January 1, 2026 and runs to the 2026 Annual Meeting of Shareholders
Engstrom will join the Audit and Risk Committee and the Cybersecurity and Digital Technology Committee effective January 1, 2026
Engstrom is Global Chief Information Officer and Senior Vice President at Caterpillar, Inc., and had no reportable business dealings with Ameren in 2024 or 2025 to date
Abercrombie & Fitch promoted Robert J. Ball from senior vice president and chief financial officer to executive vice president and chief financial officer, effective December 11, 2025. The filing sets his new $625,000 base salary and incentive targets, and says he is expected to receive a fiscal 2026 equity grant of about $1,000,000, which affects shareholders through executive pay.
Effective December 11, 2025, Robert J. Ball was promoted to executive vice president and chief financial officer
New annual base salary of $625,000, with a target incentive of 80% of salary and a maximum of 160%, for fiscal 2026
Management will recommend an annual equity award for fiscal 2026 with a grant date fair value of approximately $1,000,000, subject to performance and continued employment
Advanced Micro Devices appointed Emily Ellis, 43, as Corporate Vice President, Chief Accounting Officer and principal accounting officer, effective December 15, 2025. Jean Hu, who had been interim Chief Accounting Officer, will continue as Executive Vice President, Chief Financial Officer and Treasurer. The filing discloses Ellis's base salary, bonus target and equity award, which are routine terms for a senior finance appointment.
Emily Ellis, 43, previously Vice President Controller at Palo Alto Networks since March 2024 and a PwC partner from July 2019 to March 2024
Base salary of $425,000, annual bonus target of 70% of base salary, and $300,000 cash sign-on bonus
Restricted stock unit award with a target value of $3,000,000 under the 2023 Equity Incentive Plan
Sign-on bonus is subject to pro-rated repayment if service ends within two years
Digital Realty's board elected Stephen R. Bolze as an independent director, effective January 1, 2026, and appointed him to the Audit Committee. The filing describes his background in infrastructure investing and industrial operations, and sets out his pay as a non-employee director, which includes a $95,000 annual cash retainer and equity awards.
Stephen R. Bolze elected independent director effective January 1, 2026, serving until the 2026 Annual Meeting of Stockholders
Appointed to the Audit Committee effective January 1, 2026
Annual cash retainer of $95,000, prorated for partial years, plus an annual equity award valued at $245,000
Previously a Senior Managing Director at Blackstone and 24 years at General Electric, including President & CEO of GE Power & Water
Enovis said its Senior Vice President and Chief Human Resources Officer, Patricia A. Lang, plans to retire from that role on April 3, 2026, and will then serve in an advisory role until retiring in April 2027. The company expects Laura Singleton, currently Vice President of Human Resources for the Reconstructive segment, to succeed her in the role on April 3, 2026. This is a routine executive succession with no financial results disclosed.
Patricia A. Lang informed the board on December 10, 2025 of her plan to retire as Chief Human Resources Officer on April 3, 2026
Laura Singleton is expected to become Senior Vice President and Chief Human Resources Officer on April 3, 2026; she joined the company in February 2019 through the DJO Global acquisition
Lang's retirement transition agreement, dated December 10, 2025, keeps her base salary for six months, then reduces it by up to 50% through April 3, 2027
Labcorp said Mark Schroeder, Executive Vice President and President of Diagnostics Laboratories and Chief Operations Officer, notified the company on December 9, 2025, of his intention to retire. His retirement takes effect April 1, 2026, giving the company about three months to plan for the departure of a senior operating executive.
Mark Schroeder notified Labcorp of his retirement on December 9, 2025.
Retirement is effective April 1, 2026.
Schroeder held the roles of EVP and President, Diagnostics Laboratories, and Chief Operations Officer.
The filing does not name a successor or describe any compensation arrangements.
AGNC Investment Corp. increased its board from eight to nine members and appointed Christine L. Hurtsellers as a director, effective immediately, with a term running to the 2026 annual meeting. She was also named to the Audit Committee, which adds a director with fixed income and risk management experience to oversight of financial reporting.
Board appointment made at a meeting held December 9, 2025; board size rose from eight to nine members
Hurtsellers was previously CEO of Voya Investment Management from 2016 through 2024, a firm with over $360 billion in assets under management
She joins the Audit Committee and will receive non-employee director compensation, with a standard indemnification agreement to follow
HA Sustainable Infrastructure Capital said its Executive Vice President, Chief Legal Officer and Secretary, Steven L. Chuslo, will transition to a strategic advisor role, effective April 17, 2026, after 18 years of service. The company has begun a nationwide search for a successor and has signed a consulting agreement with Mr. Chuslo running through April 16, 2027.
Steven L. Chuslo's transition from Chief Legal Officer and Secretary is expected to take effect April 17, 2026.
The company delivered a notice of non-renewal of Mr. Chuslo's employment agreement on December 10, 2025; payments are subject to a signed waiver and release of claims.
A consulting agreement dated December 10, 2025 runs from April 17, 2026 through April 16, 2027.
The company has engaged an executive search firm to find internal and external candidates for the role.
Procter & Gamble said Jennifer Davis, its Chief Executive Officer - Health Care, notified the company on December 9, 2025 of her intent to retire effective June 30, 2026, after more than 33 years of service. The filing does not name a successor or describe any change to compensation, so shareholders should note a senior leadership transition in one of the company's business units.
Jennifer Davis, Chief Executive Officer - Health Care, notified P&G of her retirement on December 9, 2025
Retirement is effective June 30, 2026
Davis has more than 33 years of service with the company
H2O America said non-executive Chair Eric W. Thornburg will retire from the Board effective January 31, 2026, and that the retirement is not due to any disagreement with the company. The Board has appointed CEO Andrew F. Walters to serve as Chair upon Mr. Thornburg's retirement, so the chair role will pass to the current chief executive.
Eric W. Thornburg notified the company on December 9, 2025, of his decision to retire from the Board effective January 31, 2026
Thornburg is a former President and Chief Executive Officer of the company and had served as non-executive Chair
Andrew F. Walters, the current Chief Executive Officer and a director, will become Chair effective upon Thornburg's retirement
PepsiCo announced that Steven Williams, currently Chief Executive Officer, North America, will transition to Executive Vice President & Vice Chairman, Global Chief Commercial Officer & Corporate Affairs, effective December 28, 2025. The filing does not name a successor or describe compensation changes, so the full effect on the company's operations is not yet clear.
Steven Williams moves from CEO, North America to Executive Vice President & Vice Chairman, Global Chief Commercial Officer & Corporate Affairs
Transition is effective December 28, 2025
Filing was announced December 15, 2025 and does not name a successor for the North America role
GXO Logistics said Chairman Brad Jacobs will resign from the board effective December 31, 2025, and that he did not resign over any disagreement with the company. Patrick Byrne, who joined the board in July 2025, will become non-executive chairman at that time, and the board will shrink from ten directors to nine.
Brad Jacobs resigns as chairman and as a director, effective December 31, 2025
Patrick Byrne becomes non-executive chairman effective December 31, 2025
Board size reduced from ten directors to nine, effective on Jacobs' resignation
Byrne previously served as CEO of GE Digital and currently chairs Verra Mobility
Patrick Industries said Kip B. Ellis, President – Powersports and Housing, resigned as an officer and employee effective immediately to pursue outside interests, with no disagreement with the company cited. The company appointed Hugo E. Gonzalez, its Executive Vice President – Operations and Chief Operating Officer, to the president role effective immediately, in line with its succession plan.
Kip B. Ellis resigned as President – Powersports and Housing, effective immediately, announced December 12, 2025
Ellis stated no disagreement with the company on operations, policies or practices
Hugo E. Gonzalez appointed President – Powersports and Housing, effective immediately, per succession plan
XPO said founder Bradley S. Jacobs will step down from the Board on December 31, 2025, and move from Executive Chairman to Special Advisor until June 30, 2026, keeping his same salary and bonus during that period. Director Mario Harik, who is also CEO, will become Board Chairman effective January 1, 2026, consolidating the chairman and chief executive roles under one person.
Bradley S. Jacobs leaves the Board effective December 31, 2025
Jacobs becomes Special Advisor until June 30, 2026, keeping his same salary and bonus
Mario Harik appointed Board Chairman effective January 1, 2026; he remains CEO
Talen Energy's board made several executive changes effective December 15, 2025, including a new Chief Financial Officer, Cole Muller, replacing Terry Nutt, who becomes President. Mac McFarland remains Chief Executive Officer, and General Counsel John Wander plans to retire at the end of June 2026. The filing also describes a plan to settle up to 60% of certain 2026 equity awards in cash, which the company says would reduce the number of shares issued to the public market.
Terry Nutt resigned as CFO and was appointed President, effective immediately; Cole Muller was appointed CFO, effective immediately.
General Counsel and Corporate Secretary John Wander intends to retire at the end of June 2026, and the company will conduct a search for his replacement.
Illustrative example at an assumed $400 share price: about $369 million in cash settlement and about 680,000 shares issued, versus about 2,573,000 shares without partial cash settlement.
Executive employment agreements now run through February 28, 2027, with automatic annual renewals unless 90 days' notice is given.
Briefs are written by AI from the filing text and can contain mistakes — open the filing before acting on anything. Impact (1-5) and tone are the AI's reading of the filing for shareholders, not a price forecast. Not investment advice.
Briefs marked “Written later” were written in November 2026 for filings that were by then more than three weeks old, so months before mid-October 2026 hold a selection: every material 8-K of the past year for the 100 largest companies we cover and the last 15 important 8-Ks of every other one. Briefs the number check holds back are not shown or counted. Also: the last 45 days, briefs by company, A–Z and the live SEC filings wire.