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).
FatPipe appointed Kanishka Ragula, age 25, as Chief Financial Officer and Principal Accounting Officer effective September 11, 2026, replacing Eric Sherb, who ceased serving in those roles on the same date. The filing says Sherb's departure was not the result of any disagreement with the company and that he will consult for FatPipe during the transition. Ragula's family relationship to the CEO and Chairman is disclosed, which shareholders may weigh when assessing the appointment.
Eric Sherb ceased serving as CFO and Principal Accounting Officer effective September 11, 2026, and will continue as a consultant.
Kanishka Ragula, age 25, was appointed CFO and Principal Accounting Officer effective September 11, 2026; he had been Director of Finance since September 2025.
Ragula will receive an annual base salary of $175,000 plus an equity grant to be approved by the board at the annual meeting.
Ragula is the son of CEO and Chairman Ragula Bhaskar, Ph.D., and of President, CTO and director Sanchaita Datta.
On September 14, 2026, The Trade Desk's board approved a performance-based stock option for CEO Jeff Green, who recused himself from the vote. The option allows him to buy up to 7,000,000 Class A shares at $14.97, the closing price on the grant date, but shares vest only if the stock reaches price targets from $18.00 to $105.00.
Up to 7,000,000 Class A shares under the option, with an exercise price of $14.97 per share
Seven vesting tranches with price targets from $18.00 to $105.00 per share, over a ten-year term
Vesting requires the average closing price to meet a target over any 20-consecutive-trading-day period, plus continued service
The award agreement will be filed with the Form 10-Q for the quarter ending September 30, 2026
BOXABL concluded the employment of CFO Martin Costas effective September 11, 2026, and appointed Larry King as CFO effective September 14, 2026. The company also said Heather Clayton will become Chief Accounting Officer beginning September 28, 2026. The filing says Costas's departure was not due to any disagreement with the company on operations, policies, or practices.
Martin Costas's employment as CFO concluded effective September 11, 2026; the filing states no disagreement with the company was the reason.
Larry King, 65, a Certified Public Accountant, was appointed CFO and principal financial and accounting officer effective September 14, 2026, with an annual salary of $300,000.
Heather Clayton will begin as Chief Accounting Officer on September 28, 2026, with an annual salary of $250,000.
Offer letters for King and Clayton are filed as Exhibits 10.1 and 10.2.
Chipotle Mexican Grill increased its board to 11 directors and elected Sabir Sami, a former KFC Division CEO at Yum! Brands, as an independent director effective September 14, 2026. Sami will not serve on any board committee, and his pay will follow the standard non-employee director program.
Board expanded from 10 to 11 directors; the company says 10 of 11 directors are independent
Sabir Sami, age 59, served as CEO of KFC Division at Yum! Brands from January 2022 to February 2025
Sami was not appointed to any board committee; compensation follows the non-employee director program
Apogee Enterprises, Inc. elected Julie K. Streich as an independent director effective September 11, 2026, and appointed her to the Audit Committee; the board grew from eight to nine members. Director Patricia K. Wagner informed the board she intends to retire effective October 2, 2026, and the filing says her retirement is not due to a disagreement with the company. The filing reports no financial results, so the changes affect board composition rather than current financial performance.
Julie K. Streich, age 55, elected Class I director on September 11, 2026, with a term expiring at the 2029 Annual Meeting of Shareholders.
Streich appointed to the Audit Committee effective September 11, 2026; the board determined she is independent under Nasdaq listing standards.
Patricia K. Wagner informed the board on September 10, 2026 that she intends to retire effective October 2, 2026.
Streich receives a pro-rated fiscal 2027 cash retainer of $75,000 and a restricted stock award of 2,530 shares vesting over three years; APOG closed at $37.88 on September 11, 2026.
Bowhead Specialty Holdings elected Derek Walker, a Managing Director at Gallatin Point Capital, to its board of directors effective September 12, 2026, to fill an existing vacancy. He was recommended by GPC Partners Investments (SPV III) LP under a 2024 board nominee agreement, and he receives no board compensation because he is employed by Gallatin Point.
Walker elected to the board effective September 12, 2026, to fill a vacancy
Recommended by GPC Partners Investments (SPV III) LP under a Board Nominee Agreement dated May 23, 2024
Walker is a class II director, with his term expiring at the 2032 annual meeting; he stands for reelection at the 2029 meeting
Not eligible for cash fees or other compensation for board service because he is employed by Gallatin Point
DexCom named Jereme Sylvain, its executive vice president and chief financial officer, to also serve as chief operating officer, effective September 14, 2026, with oversight of global operations and quality teams. His new offer letter sets a base salary of $767,000 and a target bonus of 75% of base salary.
Sylvain keeps his CFO role and adds the COO title, effective September 14, 2026
Base salary of $767,000; annual target bonus equal to 75% of base salary
Offer letter dated September 11, 2026; a copy will be filed with the 10-Q for the quarter ended September 30, 2026
CEO Jake Leach said Sylvain will help the company scale more effectively
Firefly Neuroscience's board terminated Chief Financial Officer Paul Krzywicki on September 8, 2026, effective September 24, 2026, and stated the decision was not the result of any disagreement over the company's operations, policies or practices. The company also appointed Jessica Paz as Chief Accounting Officer, with an annual base salary of $215,000 and a stock option for 50,000 shares. The filing does not name a successor CFO.
Board terminated CFO Paul Krzywicki on September 8, 2026, effective September 24, 2026
Termination was stated to be unrelated to any disagreement on operations, policies or practices
Jessica Paz employed as Chief Accounting Officer effective September 8, 2026, at $215,000 annual base salary
Paz received a stock option for 50,000 shares, vesting over four years with 25% after the first anniversary
Crown Castle said CFO Sunit Patel will retire effective March 31, 2027, and that its board intends to appoint EVP and Chief Commercial Officer Kristoffer Hinson as CFO effective April 1, 2027. COO Cathy Piche will step down from her COO role on September 23, 2026, serve as a special advisor, and leave the company on February 22, 2027, with a search for her successor underway. The changes affect two senior executive roles, and no compensation terms for Hinson have been set yet.
Sunit Patel retires as EVP and CFO effective March 31, 2027, after the 2026 Form 10-K is filed.
Kristoffer Hinson, currently EVP and Chief Commercial Officer, is intended to become EVP and CFO effective April 1, 2027.
Cathy Piche leaves the COO role September 23, 2026, serves as special advisor, and departs February 22, 2027.
Hinson's compensation arrangements have not been determined; any required changes will be disclosed by amendment to this 8-K.
Health Catalyst appointed Tami Reller as a Class III director, effective October 1, 2026, expanding the board from six to seven members. She will also chair the Audit Committee and join the Compensation Committee. The company's press release also states that Simeon Kohl was named Chief Executive Officer and President, effective September 14, 2026.
Tami Reller appointed to the board effective October 1, 2026, filling a newly created seat
Board expands from six to seven directors, effective October 1, 2026
Reller replaces Justin Spencer as Audit Committee chair; Spencer remains on the committee
Press release states Simeon Kohl was named CEO and President effective September 14, 2026
Lululemon appointed Heidi O'Neill as chief executive officer and as a member of its board on September 8, 2026, ending the interim co-CEO roles of Meghan Frank and Andre Maestrini. The same day, the board adopted bylaw amendments covering stockholder nominations, meeting procedures and emergency operations, which shareholders may wish to review in the filed bylaws.
Heidi O'Neill began service as CEO and joined the board on September 8, 2026; the board increased from 11 to 12 members
Meghan Frank and Andre Maestrini ceased serving as interim co-CEOs as of September 8, 2026
Bylaws amended September 8, 2026, effective immediately, to update stockholder nomination and proposal procedures for universal proxy cards
A new Article XIII adds emergency bylaws for emergencies or disasters; full text filed as Exhibit 3.1
INmune Bio's board increased its size to seven directors and appointed R. Duane Clark II and James Sapirstein as independent directors on September 8, 2026, with both also joining the Nominating and Corporate Governance Committee. The company says the appointments add rare-disease commercialization and business-development experience as it prepares its Ebstrocel candidate for potential commercialization.
Board set at seven directors; Clark and Sapirstein appointed on September 8, 2026, serving until the next annual election
Each director to receive an option to purchase 100,000 shares of common stock, vesting in 36 equal monthly installments
Each director to receive an annual cash retainer of $50,000, paid quarterly in arrears
Clark is General Manager, U.S. Rare Diseases at Sanofi; Sapirstein is CEO of Cocrystal Pharma, Inc. (Nasdaq: COCP)
Inseego director Stephen Bye notified the company on September 14, 2026 that he will resign from its Board of Directors effective September 30, 2026. The filing says he is leaving to become CEO of WW International and that the resignation was not due to any disagreement with Inseego on its operations, policies or practices.
Resignation notice given September 14, 2026; effective September 30, 2026
Stated reason: forthcoming appointment as Chief Executive Officer of WW International, Inc. (Nasdaq: WW)
Filing states no disagreement with the company on operations, policies or practices
Chatham Lodging Trust appointed William P. (Liam) Brown to its Board of Trustees effective immediately, following a board recommendation on September 10, 2026. Brown retired in June 2026 as Marriott's Group President for the United States and Canada, a role covering more than 6,000 hotels, and he will serve as an independent director until the 2027 annual meeting.
Appointment made September 10, 2026, effective immediately; Brown serves until the 2027 annual meeting of shareholders
Brown was Group President, United States and Canada of Marriott from January 2021 until his retirement in June 2026
Brown receives a one-time initial grant of 5,000 restricted common shares plus standard board compensation
Brown also sits on the board of EPR Properties (NYSE: EPR) since September 6, 2024
BioMarin's board increased its size from ten to eleven members and appointed Robert Plenge, M.D., Ph.D., as an independent non-employee director effective September 10, 2026. Dr. Plenge also joins the board's Science and Technology Committee, and his director pay includes a restricted stock unit grant valued at $400,000.
Board expanded from ten to eleven members; Dr. Plenge appointed effective September 10, 2026
Dr. Plenge joins the Science and Technology Committee
Restricted stock unit grant valued at $400,000, vesting on the date immediately before the next annual meeting
Company intends to sign a standard indemnification agreement with Dr. Plenge
A10 Networks expanded its board from five to six members and appointed Mary C. Henry as a director, effective October 5, 2026. Her term runs until the 2027 annual meeting, and the filing says she has no committee assignments yet. The change adds one director and does not involve a financial result or a change in company operations.
Board approved on September 9, 2026 to increase its size from five to six members
Mary C. Henry appointed director, effective October 5, 2026, serving until the 2027 Annual Meeting of Stockholders
No committee appointments yet; she will receive standard non-employee director compensation and sign the standard indemnification agreement
Rimini Street said Steven Hershkowitz, its Executive Vice President and Chief Revenue Officer, will return to that role effective September 14, 2026, after resigning on September 8, 2026, under a mutual agreement with the company, its CEO Seth Ravin and the Board. Duties shifted to Keith Costello during his absence are being handed back to Hershkowitz.
Reinstatement effective September 14, 2026, with prior titles, duties and responsibilities restored
Previous annual base salary of $480,000 and annual incentive opportunity of $320,000.16 under the Cash Bonus Plan reinstated, based on 100% attainment; base salary prorated for the rest of 2026
Chief Revenue Officer responsibilities and direct reports return from Keith Costello, Executive Vice President and Chief Operating Officer, to Hershkowitz
Graco Inc. appointed Richard B. Lewis, President and CEO of Donaldson Company, as a director effective December 3, 2026, and named him to the Audit Committee. The filing describes a board addition, not a change in executive leadership or financial results.
Richard B. Lewis appointed to Graco's Board of Directors on September 11, 2026, effective December 3, 2026.
Lewis is in the class of directors whose terms expire at the 2027 annual meeting.
Lewis will serve on the Board's Audit Committee, effective December 3, 2026.
Lewis has been President and CEO of Donaldson Company since March 2026.
NPK International Inc. appointed James Barton as Executive Vice President, Commercial Growth & Operations, effective September 22, 2026, succeeding Lori Briggs, who leaves the role on September 14, 2026. The filing describes Barton's prior leadership roles at Clear Water Services, ZECO, Mayco Wellchem, and Baker Hughes, but gives no financial results or changes to guidance, so the direct effect on shareholders is not quantified.
James Barton appointed EVP, Commercial Growth & Operations, effective September 22, 2026
Lori Briggs, who served as EVP, Business Operations, departs September 14, 2026, after 8 years with the company
Barton most recently served as President of Clear Water Services, a wholly-owned subsidiary of Tidal Vision
Q32 Bio named José Trevejo, M.D., Ph.D., as Chief Medical Officer and Ellie Hershberger, Pharm.D., as Chief Development Officer on September 14, 2026. The company said the appointments come as it moves into a late clinical stage and prepares a registration-directed program for bempikibart in alopecia areata.
Trevejo was CMO at Enveda Therapeutics from July 2024 to September 2026 and earlier CMO at Tarsus Pharmaceuticals from February 2022 to February 2024.
Hershberger was Chief Development Officer at Adagio Therapeutics, now Invivyd, from June 2020 to January 2023.
Company plans to advance bempikibart into a registration-directed program in alopecia areata in the first half of 2027.
Flowserve said CFO Amy Schwetz, who also serves as interim Chief Accounting Officer, is leaving to join another publicly traded company, with her last day on September 30, 2026. Brian Ezzell, the company's current Vice President of FP&A, Treasurer and Investor Relations, will take over as CFO and interim Chief Accounting Officer on October 1, 2026. The company said there is no change to its full-year 2026 guidance, and the filing states that Schwetz's departure is not related to any financial or accounting issue.
Amy Schwetz's last day as CFO and interim Chief Accounting Officer is September 30, 2026
Brian Ezzell, 44, becomes CFO and interim Chief Accounting Officer effective October 1, 2026, and has held his current role since October 2024
Ezzell's annual base salary is $625,000, with a 75% target annual incentive and a $1,600,000 target long-term incentive award beginning in 2027
Flowserve expects no change to its previously announced full-year 2026 guidance
State Street announced two senior leadership appointments effective immediately. Ann Fogarty, previously Investment Services Chief Operating Officer, was named Enterprise Chief Operating Officer, succeeding Mostapha Tahiri, who was named President of State Street Alpha and will continue as Chairman of Asia Pacific. The filing also sets Ms. Fogarty's target incentive compensation award at $5,650,000 in connection with the COO appointment.
Ann Fogarty appointed Enterprise Chief Operating Officer, succeeding Mostapha Tahiri, effective September 14, 2026
Mostapha Tahiri appointed President of State Street Alpha and will continue as Chairman of Asia Pacific
Ms. Fogarty's target incentive compensation award set at $5,650,000
Ms. Fogarty has served as Executive Vice President since joining State Street in March 2021 and as Investment Services COO since July 2025
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.