1,853 material Form 8-K filings that 1,500 companies we cover made with the SEC in September 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).
On September 23, 2026, independent director George Kollitides notified the board of D. Boral Acquisition I Corp. of his resignation, effective immediately, citing personal reasons. The company said the resignation was not related to any disagreement on its operations, policies or practices.
Director George Kollitides resigned from the board, effective immediately.
Notice of resignation given to the board on September 23, 2026.
Company states the resignation was for personal reasons, not a disagreement with the company.
The filing was signed by CFO John Darwin on September 28, 2026.
Chesapeake Utilities designated Jeffrey S. Sylvester, its Senior Vice President and Chief Financial Officer, as principal financial officer, and Michael D. Galtman, its Senior Vice President and Chief Transformation Officer, as principal accounting officer, both on September 28, 2026. The filing states no compensation changes were made in connection with either designation, so the change is administrative in nature for shareholders.
Jeffrey S. Sylvester was designated principal financial officer on September 28, 2026; he was appointed CFO effective July 1, 2026
Michael D. Galtman was designated principal accounting officer on September 28, 2026; he became Chief Transformation Officer effective April 1, 2026
Galtman previously served as Chief Accounting Officer from 2019 to April 2026
No compensation changes were implemented for either officer in connection with the designations
Surf Air Mobility appointed Jason Secore as Chief Financial Officer effective September 30, 2026, succeeding Oliver Reeves, who is stepping down to pursue other opportunities. Reeves will continue to support the company as an advisor. The filing also includes Secore's employment agreement, dated September 24, 2026.
Jason Secore becomes CFO effective September 30, 2026, succeeding Oliver Reeves.
Secore has 18 years of finance leadership experience, most recently as CFO of Matternet.
Oliver Reeves is stepping down to pursue other opportunities and will continue as an advisor.
Employment agreement dated September 24, 2026, effective September 30, 2026, is filed as Exhibit 10.1.
AST SpaceMobile's Compensation Committee adopted a Senior Management Change of Control Severance Policy on September 25, 2026, covering the CEO, President, and all Executive and Senior Vice Presidents. The policy sets cash severance, benefit continuation, and equity vesting terms that apply if an executive is terminated without cause or resigns for constructive discharge around a change of control.
Adopted September 25, 2026; applies to the CEO, the President, and all EVPs and SVPs, including all named executive officers
CEO payment multiple is 2.0 times base salary plus target bonus; other eligible employees receive 1.5 times
Benefit continuation runs 24 months for the CEO and 18 months for other eligible employees; performance awards convert to time-based awards on a change of control
StandardAero announced that Chief Operating Officer Kimberly Ernzen will no longer serve in that role as of September 28, 2026. She will stay employed through December 31, 2026 to support the leadership transition, and the company expects to enter into a transition agreement with her, terms not yet determined.
Kimberly Ernzen ceases to be Chief Operating Officer effective September 28, 2026
Ernzen remains employed and supports the leadership transition through December 31, 2026
Transition agreement terms have not yet been determined by the company
Gain Therapeutics said its senior vice president of finance and principal financial officer, Gianluca Fuggetta, will resign effective September 30, 2026, to pursue other opportunities. The board appointed CEO Gene Mack as interim chief financial officer effective October 1, 2026, and the company is searching for a permanent replacement.
Gianluca Fuggetta gave notice on September 22, 2026; resignation effective September 30, 2026
Gene Mack, current President and CEO, appointed interim CFO effective October 1, 2026
Mack also assumes principal financial and principal accounting officer duties; his employment terms are unchanged
Company is conducting an ongoing search for a permanent principal financial officer
Graphic Packaging Holding Company appointed Aditya Gandhi as Vice President and Chief Accounting Officer effective September 28, 2026, reporting to Interim Chief Financial Officer Charles D. Lischer. Gandhi previously served as Chief Accounting Officer at AptarGroup and Sonoco Products Company, and the filing discloses his pay package, which includes restricted stock units and a cash sign-on bonus.
Gandhi, age 46, joins as Vice President and Chief Accounting Officer, reporting to Interim CFO Charles D. Lischer
One-time restricted stock unit grant valued at approximately $715,000, vesting ratably over three years
Cash sign-on bonus of $105,000
Prior roles include Chief Accounting Officer at AptarGroup (from June 2026) and Sonoco Products Company (August 2022 to May 2026)
Teledyne said Vice Chairman Jason VanWees will retire effective February 1, 2027. Mary Grace DeForest, Senior Vice President and General Manager of Teledyne Microwave, will become Corporate Vice President of Investor Relations and Mergers and Acquisitions effective November 1, 2026. VanWees has led the identification and acquisition of 75 businesses for cumulative consideration of $12.8 billion, so the change affects the company's acquisition and investor communication roles.
Jason VanWees, Vice Chairman, retires effective February 1, 2027, at age 55
Mary Grace DeForest appointed Corporate Vice President of Investor Relations and M&A, effective November 1, 2026
DeForest is SVP and General Manager of Teledyne Microwave, with 880 employees and annual revenue of $320 million
VanWees led acquisitions of 75 businesses for cumulative consideration of $12.8 billion
PetMed Express increased the share reserve under its 2024 Inducement Incentive Plan by 500,000 shares, bringing the total to 850,000, effective September 27, 2026. The increase covers equity grants promised to Jeffrey Allen Willard, the new Chief Executive Officer, whose start date is September 28, 2026, so the change adds potential dilution for shareholders.
Share reserve under the Inducement Incentive Plan rises by 500,000 shares to 850,000 total.
The increase matches 250,000 restricted stock shares plus 250,000 performance share units promised to CEO Jeffrey Allen Willard.
Willard's start date is September 28, 2026; the plan was amended and restated as of September 27, 2026.
No other changes were made to the original plan, per the filing.
Neurocrine Biosciences appointed Eiry W. Roberts, M.D., as Chief Medical Officer effective September 28, 2026, succeeding Sanjay Keswani, M.D., whose service ended September 25, 2026 by mutual agreement. The filing says Dr. Roberts will receive a base salary of $825,000, a target bonus of 60% of base pay, and about $1.25 million in target equity grants, and that Dr. Keswani will receive severance under the company's Executive Severance Plan.
Dr. Keswani's service as Chief Medical Officer ended September 25, 2026, by mutual agreement with the Board.
Dr. Roberts was appointed Chief Medical Officer effective September 28, 2026, with an annual base salary of $825,000 and a target bonus of 60% of base pay for 2026.
Target equity grants total about $1.25 million: stock options of about $625,000, restricted stock units of about $250,000, and performance-vesting restricted stock units of about $375,000.
The final Employment Agreement is expected to be filed with the Form 10-Q for the quarter ending September 30, 2026.
Asana's board appointed CEO Dan Rogers as Board Chair effective September 25, 2026, succeeding Dustin Moskovitz, who remains a director. The board also expanded from seven to nine members with Tom Berquist and Jerry Ting, and named Heather Le as Chief Accounting Officer and Principal Accounting Officer. The filing describes these as governance and leadership changes and does not report any financial results.
Dan Rogers, CEO and a Class III director, was appointed Board Chair effective September 25, 2026, and is not eligible for director compensation as an employee.
Tom Berquist (Class II, term to the 2028 annual meeting) and Jerry Ting (Class I, term to the 2027 annual meeting) were appointed directors, increasing the board from seven to nine members.
Heather Le was appointed Chief Accounting Officer with a $400,000 annual base salary, a 15% initial target bonus and a $1,000,000 target-value RSU grant subject to Compensation Committee approval.
Emmis Acquisition Corp. appointed Kenneth C. Greenberg as a Class II director on September 25, 2026, and named him chairman of the Compensation Committee, with additional seats on the Audit and Nominating and Corporate Governance Committees. Seth Farbman was removed from all three of those committees but remains a Class I director. The filing describes board committee changes and a standard indemnification agreement, with no financial results or guidance included.
Kenneth C. Greenberg appointed Class II director on September 25, 2026; he is age 70 and the filing says he qualifies as independent under Nasdaq and Rule 10A-3 standards.
Greenberg chairs the Compensation Committee and also sits on the Audit and Nominating and Corporate Governance Committees.
Seth Farbman removed from the Audit, Compensation, and Nominating and Corporate Governance Committees on September 25, 2026; he continues as a Class I director.
Emmis Capital Sponsor LLC transferred 11,667 Class B ordinary shares to Greenberg in connection with his appointment.
Adeia Inc. said Dipti Vachani, a former Arm Limited executive, will become chief executive officer and a board member effective October 12, 2026, succeeding Paul E. Davis, who is leaving to focus on his health and personal pursuits. The filing sets out her pay package, including a $730,000 base salary and an $11,000,000 target equity grant, along with severance terms and a consulting arrangement for Davis.
Vachani's CEO start date and board seat are both effective October 12, 2026; Davis's consulting agreement runs through December 31, 2026.
Vachani's offer letter provides a $730,000 base salary and a target bonus of 100% of base salary.
Target equity grants total $11,000,000, including a $4,400,000 time-based RSU award and a $6,600,000 performance-based RSU award.
Davis will receive a fixed consulting fee of $183,000.
Humacyte appointed two new directors, Scott Coward and Paul Kuznik, effective September 22, 2026, and announced the appointments in a September 28, 2026 press release. Mr. Coward joins the Audit Committee and Mr. Kuznik joins the Commercial Committee, and both will receive standard non-employee director compensation. The filing reports no financial results and no change in management roles, so the change has limited direct impact on shareholders.
Scott Coward appointed Class I director with a term expiring in 2028; former Exact Sciences executive and board member
Paul Kuznik appointed Class II director with a term expiring in 2029; former CEO of Bolton Medical
Each director receives a $50,000 annual cash retainer, $5,000 per year for committee service, and an option to purchase 125,000 shares of common stock
Par Pacific appointed Jerry Stumbo, formerly a Valero refinery general manager, as Executive Vice President of Refining and Logistics effective September 28, 2026. Richard Creamer, the current executive in the role, will serve as Senior Advisor until his planned retirement on or about April 1, 2027.
Jerry Stumbo, age 55, joins from Valero Energy, where he was VP and General Manager of the Port Arthur, Texas Refinery
Stumbo's Port Arthur refinery has approximately 435,000 barrels per day of throughput capacity
Richard Creamer retires effective on or about April 1, 2027, after serving as Senior Advisor from September 28, 2026
Archrock's Vice President and Chief Accounting Officer, Donna A. Henderson, notified the company on September 23, 2026 that she intends to retire effective December 4, 2026. The filing does not name a successor or describe any financial impact, so the change's effect on shareholders is not yet clear.
Donna A. Henderson, Vice President and Chief Accounting Officer, plans to retire.
Notice was given to the company on September 23, 2026.
Effective September 28, 2026, World Gold Trust Services, LLC, sponsor of SPDR Gold Trust, appointed Joan A. Binstock to its Board of Directors and Audit Committee. The filing describes her background in accounting, finance and asset management, including past roles as a CPA, partner and chief financial officer at Lord, Abbett & Co. LLC.
Appointment effective September 28, 2026, to the Sponsor's Board of Directors and Audit Committee
Joan A. Binstock, age 72, is a licensed Certified Public Accountant and an Advisor at Lovell Minnick Partners, LLC since July 2018
Previously a Partner at Lord, Abbett & Co. LLC from 2000 to March 2018, where she served as Chief Financial Officer
Effective September 28, 2026, WGC USA Asset Management Company, LLC, sponsor of World Gold Trust and SPDR Gold MiniShares Trust, appointed Joan A. Binstock to its Board of Directors and Audit Committee. The filing describes a board-level appointment at the sponsor and does not describe any change to the fund's gold holdings or operations.
Appointment effective September 28, 2026 to the sponsor's Board of Directors and Audit Committee
Binstock, age 72, is a licensed Certified Public Accountant and former Chief Financial Officer of Lord, Abbett & Co. LLC
Binstock has held board roles at Morgan Stanley Direct Lending Fund since October 2019 and Brown Brothers Harriman US Mutual Funds since September 2019
Core Molding Technologies said Michael J. Gayford has been promoted to Chief Operating Officer, effective immediately on September 28, 2026. He takes operational responsibility for the company's North American operations, and the Mexico operations executive will report to him. The filing describes this as an internal promotion, with no change in the company's reported financial results.
Michael J. Gayford named Chief Operating Officer effective September 28, 2026
Gayford joined the company in March 2023 as Vice President of Operations and was promoted to Executive Vice President of Operations in 2025
Arnold Alanis, Executive Vice President of Operations in Mexico, will report to Gayford
Gayford has more than 25 years of manufacturing, engineering and operational leadership experience, including more than 17 years in composite manufacturing
Quantum Corporation appointed James C. Clancy as Chief Operating Officer effective September 28, 2026, and he resigned from the board and its committees the same day. The filing sets out his pay package, including a $400,000 base salary, a 60% target bonus, 150,000 RSUs and an option on 400,000 shares, plus severance terms for both standard and change-of-control situations.
Clancy's offer letter sets a $400,000 annual base salary and a target bonus of 60% of base salary.
He received a grant of 150,000 RSUs and an option to purchase 400,000 shares, with grants expected around October 1, 2026.
Under the change-of-control agreement, a qualifying termination within 3 months before to 12 months after a change of control triggers 12 months of base salary plus 100% of target bonus.
Park Aerospace's Compensation Committee approved raising the annual base salary of Mark A. Esquivel, President and Chief Operating Officer, from $270,000 to $400,000. The increase takes effect September 28, 2026. The filing reports only this pay change, so its direct effect on shareholders is limited to the executive compensation it reflects.
Annual base salary rises from $270,000 to $400,000, an increase of $130,000.
Compensation Committee approved the change on September 24, 2026.
The new salary takes effect September 28, 2026.
Filing dated September 25, 2026, signed by CFO Constantine Petropoulos.
H.B. Fuller appointed R. Jeffrey Bailly, former CEO of UFP Technologies, as a Class I director effective September 23, 2026, and he joins the Audit and Compensation Committees. Director Ruth S. Kimmelshue resigned from the board effective immediately, and the company said her departure was not due to any disagreement. The change adds a director with medical technology and M&A experience, which the company says supports its shift toward higher-growth, higher-margin end markets.
Bailly, age 64, elected as a Class I director on September 23, 2026, with a term expiring at the 2027 annual meeting
Bailly receives a $100,000 annual cash retainer, an initial grant of 1,300 restricted stock units, and an annual deferred phantom stock grant valued at $165,000
Kimmelshue resigned effective immediately; the company said she served on the board for nearly a decade
MongoDB said CEO Chirantan Desai is stepping down, effective September 28, 2026, and that the board appointed former CEO Dev Ittycheria as interim President and CEO. The company said it has started a search for a permanent CEO and reaffirmed its fiscal 2027 and third-quarter guidance, which matters to shareholders because it changes the company's leadership while its outlook stays unchanged.
Chirantan Desai's resignation as President and CEO is effective September 28, 2026; the filing says it is not due to any disagreement with the company.
Dev Ittycheria, CEO from 2014 to 2025 and a board member since 2014, was appointed interim President and CEO effective September 28, 2026.
The board has begun a search for a permanent CEO and retained an executive search firm.
MongoDB reaffirmed its guidance for Q3 and full-year fiscal 2027 provided on September 1, 2026; an Investor Day is set for September 29, 2026, from 11:00 a.m. to 3:15 p.m. ET.
Vestis Corporation appointed Russell Tiejema as Executive Vice President and Chief Financial Officer effective September 28, 2026, succeeding Adam K. Bowen, who had served as interim CFO since December 16, 2025. The company also reaffirmed its fiscal year 2026 outlook, consistent with its August 11, 2026 third quarter earnings release. The filing shows no change to that outlook, and the new CFO's pay package is set out in his employment agreement.
Russell Tiejema, 58, was most recently CFO of US LBM, from June 2024 to July 2026, and previously CFO of Masonite International
Initial base salary of $700,000, a 100% target bonus beginning fiscal 2027, and a $2,500,000 one-time sign-on equity award
Annual LTIP target grant date value of $1,750,000 beginning fiscal 2027, subject to committee approval
Adam K. Bowen, interim CFO, intends to remain with the company through the end of October 2026
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.