2,914 material Form 8-K filings that 2,352 companies we cover made with the SEC in August 2026, 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).
Arthur J. Gallagher & Co. said its Controller and Chief Accounting Officer, Richard C. Cary, will step down from that role effective September 30, 2026, and remain with the company as Corporate Vice President - Accounting until he retires in 2028. Kyle G. Koreyva, who joined through the AssuredPartners acquisition, will succeed him as principal accounting officer effective October 1, 2026, with no change to his compensation.
Richard C. Cary steps down as Controller and Chief Accounting Officer effective September 30, 2026; he has held the Controller role since 1997 and CAO role since 2001
Kyle G. Koreyva, age 42, succeeds Cary effective October 1, 2026
Koreyva previously served as AssuredPartners' Chief Accounting Officer from June 2024 and joined the company in August 2025 through the AssuredPartners acquisition
The company states Cary's departure is not due to any disagreement on financial statements, internal controls, operations, policies or practices
McEwen's chief operating officer, William Shaver, retired from that role and from the Board effective August 24, 2026, and the company said his departure was not the result of any disagreement. McEwen also promoted three executives to vice president roles covering operations, development projects, and permitting, with Vice-Chairman Ian Ball working closely with them. Shareholders will want to track how these changes affect production, mine construction and permitting toward the company's goal of 250,000-300,000 GEOs by 2030.
Shaver retired as COO and as a director effective immediately on August 24, 2026
Channa Kumarage promoted to Vice President, Operations, overseeing the operating mines
Kevin Bromfield promoted to Vice President, Development Projects, covering Grey Fox, Tartan Mine Project and Lookout Mountain/Windfall
Zahir Jina promoted to Vice President, Permitting, Government Relations and Sustainability; the Stock Mine in Timmins is nearing completion and El Gallo in Mexico is starting construction
George O'Leary resigned as Chief Financial Officer of New America Acquisition I Corp. effective August 26, 2026, and the filing states the resignation was not due to any disagreement with management or the board. The board appointed Tim S. Ledwick as Chief Financial Officer and Christopher Devall as Chief Operating Officer, effective the same day. The filing describes the company as a blank-check company seeking a business combination, so the change affects its leadership rather than reported operations.
George O'Leary resigned as CFO effective August 26, 2026, with no disagreement with management or the board cited
Tim S. Ledwick, 68, has been CFO of Dominari Holdings Inc. since October 2025
Christopher Devall, 44, has been COO of Dominari Holdings since January 2023 and CEO of SIM Acquisition Corp. I since January 2026
A press release dated August 26, 2026 announcing the changes is furnished as Exhibit 99.1
Z Squared Inc. amended the executive employment agreement of Chief Technology Officer Jeffery Harris on August 24, 2026. The amendment fixes the number of restricted stock units in his first-year bonus award at 49,778, which the company had previously tied to a grant-date value of three times his base salary.
Amendment No. 1 to Harris's Employment Agreement is dated August 24, 2026, and amends the agreement originally entered June 24, 2026.
First-year bonus award fixed at 49,778 restricted stock units.
Original agreement set the annual bonus, in restricted stock units, at a grant-date fair market value equal to three times Harris's base salary.
Keysight Technologies' Board increased its size from ten to eleven members and appointed Scott Reese to fill the new seat, effective August 26, 2026. Reese, former CEO of GE Vernova's Electrification Software business and a former Autodesk executive, will serve as a Class I director and sit on the Audit and Finance and Nominating and Corporate Governance Committees.
Board size increased from ten to eleven members; Reese fills the new seat, effective August 26, 2026
Reese's term expires at the 2027 Annual Meeting of Stockholders
Board determined Reese meets NYSE and Regulation S-K independence standards
Reese will receive one-half of the standard annual director cash and stock compensation for the plan year ending February 28, 2027
Champion Homes increased its board from six to seven directors and elected Michael R. Haack, 53, as an independent director effective August 26, 2026. Haack, who is President and CEO of Eagle Materials Inc., joins the Compensation Committee, and Mary Fedewa was named Audit Committee Chair effective the same day. The filing contains no financial figures, so the changes concern board composition and committee roles rather than company results.
Board expanded from six to seven directors; Michael R. Haack, 53, elected with a term expiring at the 2027 Annual Meeting of Shareholders
Haack is President and CEO of Eagle Materials Inc. and joins the Compensation Committee; the Board deems him independent under NYSE standards
Mary Fedewa designated Audit Committee Chair and ceased serving on the Compensation Committee, effective August 26, 2026
Board action was taken August 24, 2026; the press release gives August 24 as the effective date, while the 8-K gives August 26
CuriosityStream said CFO Brady Hayden will step down effective September 1, 2026, and the Board appointed Sean Piche, CPA, to succeed him and report to President and CEO Clint Stinchcomb. The filing states Hayden's departure is not the result of any disagreement with the company. The attached press release cites second-quarter revenue of $23.2 million, up 22% year over year, and says the company raised its full-year revenue and adjusted EBITDA guidance.
Sean Piche, CPA, becomes CFO effective September 1, 2026, succeeding Brady Hayden
Piche's offer letter sets base salary at $120,000 for the rest of 2026, rising to $180,000 on January 1, 2027
Piche receives an annual bonus target of 100% of base salary and 150,000 restricted stock units under the Inducement Equity Incentive Plan
Press release cites Q2 revenue of $23.2 million, up 22% year over year, and record net income of $8.9 million
RUM Group Inc. disclosed that director Paul Cappuccio resigned from its Board of Directors effective with an August 21, 2026 notice. He is leaving to focus on his new role as Chief Legal Officer at Reddit, Inc., which starts in September 2026, and the filing says the resignation was not due to any disagreement with the company.
Paul Cappuccio resigned from the RUM Group board on August 21, 2026.
He cited his responsibilities as Chief Legal Officer at Reddit, Inc., starting September 2026.
The filing states the resignation was not due to any disagreement over company operations, policies, or practices.
The board size was reduced to five directors following his departure.
Gevo, Inc. appointed Greg Hanselman as Chief Operating Officer effective August 20, 2026, after he served as Executive Vice President, Operations and Engineering since January 2026. The company also expanded the responsibilities of Kyle James and Dave Kettner, which it says supports the North Dakota expansion and its growth plans.
Greg Hanselman, 60, becomes Chief Operating Officer effective August 20, 2026, with an initial annual base salary of $380,000 and an annual cash incentive of 65% of base salary.
Hanselman's expected equity grants are 215% of his annual base salary, and he will take part in the Change in Control Severance Plan with 6-month severance benefits.
Kyle James is now Chief Commercial and Risk Officer, and Dave Kettner keeps his General Counsel role while adding Chief Legal and Emerging Business Officer.
The press release says Gevo is executing against an outlook to deliver more than $60 million in Adjusted EBITDA in 2026, a non-GAAP measure.
WM said CEO Jim Fish will retire as chief executive and resign from the board effective January 4, 2027, and will serve in an advisory role until mid-February 2027. The board named President John Morris, Jr. to succeed him as President and CEO and as a director on the same date, which matters to shareholders as a planned leadership transition to an internal candidate; the filing gives no financial results or guidance.
Jim Fish steps down as CEO and resigns from the board effective January 4, 2027; advisory role expected until mid-February 2027.
John J. Morris, Jr., age 57, has been WM President since May 2025 and will become President, CEO and a director on January 4, 2027.
Morris was previously President and Chief Operating Officer (May 2025 to May 2026) and Executive Vice President and Chief Operating Officer (January 2019 to May 2025).
The filing states Morris was not appointed under any arrangement with another person and has no family relationship with any director or executive officer; it includes no financial results or guidance.
Micron Technology promoted two senior executives effective immediately: Manish Bhatia to President and Chief Operating Officer and Scott DeBoer to President and Chief Technology and Products Officer. The filing also says Sumit Sadana moved from Executive Vice President and Chief Business Officer to Senior Advisor to the CEO, and that no compensation changes were made for Bhatia or DeBoer at this time.
Manish Bhatia, 54, now President and Chief Operating Officer, with P&L accountability for global operations and business units
Scott DeBoer, 60, now President and Chief Technology and Products Officer, overseeing Micron Research Labs
Sumit Sadana transitioned to Senior Advisor to the CEO, effective August 26, 2026
No changes to compensation arrangements for Bhatia or DeBoer at this time
CPI Card Group appointed Brennan Hughes as Chief Accounting Officer, effective August 24, 2026, replacing Donna Abbey Carmignani, who left the role effective August 20, 2026. The filing describes Hughes's prior roles at Artisan Partners and Janus Henderson and his compensation package, but it does not report any financial results. The change affects the company's finance leadership, which the filing says is tied to its growth and capital allocation.
Brennan Hughes appointed Chief Accounting Officer, effective August 24, 2026; previously Director of Finance and Head of Investor Relations at Artisan Partners (2024 to 2026)
Hughes's compensation includes a $350,000 base salary, $200,000 target annual short-term incentive, $200,000 target annual long-term incentive, a $100,000 restricted stock unit grant on August 31, 2026, and a $150,000 cash sign-on award
Donna Abbey Carmignani ceased serving as Controller and Chief Accounting Officer effective August 20, 2026 and is eligible for severance under the company's existing guidelines
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.