1,152 material Form 8-K filings that 918 companies we cover made with the SEC in October 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).
Science Applications International Corp. replaced CEO Toni Townes-Whitley with board member James Reagan as interim chief executive, effective October 23, 2025, and is searching for a permanent CEO. The company reaffirmed its fiscal 2026 guidance but said a prolonged federal government shutdown could impair its ability to achieve it and that it may reassess that guidance.
James C. Reagan, a board member since January 2023 and former Leidos CFO, named interim CEO effective October 23, 2025.
Reagan's base salary is $1,200,000, with a short-term bonus target of 150% of salary and $2,000,000 in long-term RSU awards.
Townes-Whitley departed without cause and receives severance benefits in exchange for a release and a two-year non-compete.
The company reaffirmed fiscal 2026 guidance first issued September 4, 2025, and may reassess it depending on the government shutdown.
MGIC Investment Corporation's board elected Martin P. Klein and Daniela A. O'Leary-Gill as new directors on October 22, 2025. Each will receive a restricted stock unit grant valued at $36,302 on October 31, 2025, a pro-rated share of the annual non-management director grant.
Board elected Martin P. Klein and Daniela A. O'Leary-Gill on October 22, 2025.
Klein joins the Risk Management and Securities Investment Committees; O'Leary-Gill joins the Audit and Business Transformation & Technology Committees.
Each director will receive restricted stock units valued at $36,302 on October 31, 2025.
CVB Financial Corp. appointed Timothy Stephens, a retired EY partner, as a director of the company and its subsidiary Citizens Business Bank, effective November 1, 2025. The board size at both entities rises from eight to nine directors.
Stephens will earn a $77,000 annual directors' fee and receive a pro-rated initial restricted stock grant on November 19, 2025.
He will serve on the company's Audit, Nominating and Corporate Governance, and Compensation committees.
Stephens retired from EY in 2024 after a 27-year career.
The filing states no related-party transactions requiring disclosure under Item 404(a).
Boston Scientific director John E. Sununu told the company on October 22, 2025, that he will not stand for re-election at the 2026 Annual Meeting of Stockholders. He will remain a director and keep his committee roles until that meeting, and the company says the decision is not the result of any disagreement.
Sununu has served on the Board since April 2009.
He currently sits on the Audit Committee and chairs the Nominating and Governance Committee.
He will continue as a director until the 2026 Annual Meeting.
The Board will evaluate whether to add directors after his departure.
Kinsale Capital Group's President and Chief Operating Officer Brian D. Haney will retire effective March 2, 2026, and was elected to the board on October 23, 2025, which expanded the board from nine to ten members. Michael P. Kehoe, Chairman and CEO, will take the added title of President upon Haney's retirement, and Stuart P. Winston was promoted to Executive Vice President, Chief Underwriting Officer.
Brian D. Haney notified the company of his retirement intent on October 17, 2025; retirement is effective March 2, 2026
Haney joined the board effective October 23, 2025 and will stand for re-election at the 2026 annual meeting, then begin a Senior Advisor consulting role focused on investor relations
Michael P. Kehoe, Chairman and CEO since 2009, will also become President effective March 2, 2026
Stuart P. Winston promoted to Executive Vice President, Chief Underwriting Officer; he joined the company in 2010
Mettler-Toledo amended the employment agreement of executive Marc de La Guéronnière on October 21, 2025. The amendment sets 2026 as a transition year ahead of his potential retirement at the end of 2026, with him working at half his prior full-time commitment. The change affects compensation and no equity grants for 2026, which is relevant to shareholders as it reflects how the company is planning the executive's departure.
Amendment dated October 21, 2025 to employment agreement from January 27, 2011
Executive to work at 50% of prior full-time commitment in 2026, with potential retirement at end of 2026
Base salary set at EUR 140,000 for 2026, plus an additional EUR 150,000 bonus tied to successful transition, payable January 2027
No additional equity compensation grants in 2026; existing grants continue to vest
On October 23, 2025, TransDigm's board appointed CEO Michael Lisman and retired executive Peter Palmer as directors, effective immediately. Neither has been placed on a board committee, and the filing reports no related party transactions for either director.
Michael Lisman is President and Chief Executive Officer and previously served as Co-Chief Operating Officer and Chief Financial Officer.
Peter Palmer retired as an Executive Vice President at the end of 2024, after a 24-year career at TransDigm.
Neither new director has been appointed to any board committee.
The filing reports no arrangements for either director's selection and no related party transactions under Item 404(a).
Armstrong World Industries added Kevin P. Holleran, former President and CEO of Hayward Holdings, as a director on October 22, 2025, expanding the board to eight members. The board also raised its nonemployee director pay, which matters to shareholders as a modest increase in board compensation costs and a change in board composition.
Kevin P. Holleran appointed director on October 22, 2025, with a term expiring at the 2026 annual meeting; he will serve on the Management Development and Compensation and Nominating, Governance and Social Responsibility committees
Annual equity retainer for nonemployee directors raised from $125,000 to $135,000, effective at the 2026 annual meeting
Annual retainer for the Board Chair raised from $100,000 to $125,000, with $65,000 payable in cash and $60,000 in equity
Insulet Corporation's board appointed Robbie Huffines, a former JP Morgan Chase investment banking executive, as a Class II director effective October 31, 2025. He was also named to the board's Audit Committee and will stand for election at the 2027 annual meeting.
Appointed by the board on October 21, 2025; effective October 31, 2025
Named to the Audit Committee, effective October 31, 2025
Previously Global Chair of Investment Banking at JP Morgan Chase, retiring in 2024
Receives non-employee director cash and equity compensation under the company's program
Dana Incorporated appointed Hanna Olivia Nelligan to its board of directors on October 22, 2025, effective immediately, and announced the appointment in a press release dated October 23, 2025. Ms. Nelligan is executive vice president, chief financial officer, and chief strategy officer of CHS Inc., and she will sit on the board's Audit and Compensation Committees. The filing describes this as a board addition with no reported financial results or guidance changes.
Board appointment made October 22, 2025, effective immediately
Ms. Nelligan is EVP, CFO, and chief strategy officer of CHS Inc., a global agribusiness
She will serve on the Audit Committee and the Compensation Committee
She will receive the same compensation as Dana's other non-employee directors
MSC Industrial reported fiscal 2025 results, with full-year net income attributable to the company down 22.9% to $199.3 million and diluted EPS of $3.57 versus $4.58, while fourth-quarter net sales rose 2.7% to $978.2 million. The company also said CEO Erik Gershwind will resign effective December 31, 2025, and President and Chief Operating Officer Martina McIsaac will become CEO effective January 1, 2026, a change shareholders should note alongside the weaker full-year profit.
Fiscal 2025 net sales $3,769.5 million, down 1.3%; full-year diluted EPS $3.57 vs. $4.58 a year earlier
Fourth-quarter diluted EPS $1.01 vs. $0.99; fourth-quarter net sales $978.2 million, up 2.7%
Gershwind stays on the Board and becomes Non-Executive Vice Chair; McIsaac's base salary rises to $850,000 with a target bonus of 125% of salary
First-quarter fiscal 2026 outlook: average daily sales growth of 3.5% to 4.5% and adjusted operating margin of 8.0% to 8.6%
Ingevity Corporation appointed Ruth Castillo as senior vice president and president of Performance Materials, its activated carbon segment, effective November 10, 2025. She will report directly to President and CEO Dave Li and join the executive leadership team. The filing does not include financial results, guidance, or compensation terms.
Appointment effective November 10, 2025; Castillo reports directly to CEO Dave Li
Castillo was vice president of global chemicals at Avantor from January 2025 to October 2025
Previously spent about 17 years at Celanese; has more than 25 years of industry experience
The filing does not describe compensation terms or include financial results
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.