1,298 material Form 8-K filings that 1,057 companies we cover made with the SEC in April 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).
Avantor said Ludovic Brellier, formerly President of Cytiva's Hardware Solutions business at Danaher, will join as Executive Vice President, Bioscience & Medtech Products (BMP) and Chief Transformation Officer effective May 1, 2026. He will lead the BMP business and the Revival Management Office, which drives transformation initiatives across the enterprise. The filing also says current BMP segment head Benoit Gourdier is moving to a segment integration role and is expected to leave no later than December 31, 2026.
Ludovic Brellier starts May 1, 2026 as EVP, BMP and Chief Transformation Officer
Brellier will lead the Revival Management Office, overseeing enterprise transformation initiatives
Benoit Gourdier moves to a segment integration role and is expected to depart by December 31, 2026
The announcement was made in a press release dated April 23, 2026
National Health Investors said CFO John Spaid will retire effective July 1, 2026, and Todd Siefert, who joins as Executive Vice President Corporate Finance on June 1, 2026, will succeed him as Chief Financial Officer. The change puts the REIT's finance leadership in new hands, and the filing reports no financial results or guidance changes.
John L. Spaid notified the board on April 21, 2026, of his retirement as EVP of Finance, CFO and Treasurer, effective July 1, 2026.
Todd Siefert, 52, starts as EVP Corporate Finance on June 1, 2026, and becomes CFO upon Spaid's retirement; he was previously CFO of Hillsboro Residential.
Siefert's pay includes a $500,000 base salary, a maximum bonus potential of $490,000, a $437,500 target equity award, a $100,000 signing bonus and an option on 50,000 shares.
Spaid's transition agreement, subject to a release of claims, accelerates certain restricted stock vesting and provides medical premium payments through December 31, 2026.
RPM International appointed Thomas C. Gentile, III to its Board of Directors effective April 20, 2026, expanding the board to 13 members. Gentile currently serves as chairman, chief executive officer and president of Hexcel Corporation and will sit on the Board's Compensation Committee.
Appointed to the board effective April 20, 2026; board expands to 13 members
Current role: chairman, CEO and president of Hexcel Corporation (NYSE: HXL)
Prior roles include president and CEO of Spirit AeroSystems and 19 years at General Electric
Will serve on the Compensation Committee; receives director pay consistent with other non-employee directors
Acadia Healthcare said CFO Todd Young will resign effective April 30, 2026, to take a CFO role at a private equity-backed animal health company. The board appointed former CFO David Duckworth as interim CFO effective May 1, 2026, and the company reaffirmed its first-quarter and full-year 2026 guidance, so the financial outlook is unchanged.
Todd Young resigns as CFO effective April 30, 2026, and will join the first-quarter earnings call on April 30.
David Duckworth, CFO from July 2012 to July 2023, becomes interim CFO effective May 1, 2026, and is expected to serve at least until a permanent CEO is named.
Duckworth's employment agreement sets a base salary at a monthly rate of $100,000 and a quarterly cash bonus of $125,000.
Guidance reaffirmed: full-year 2026 revenue of $3.37 to $3.45 billion and adjusted EPS of $1.30 to $1.55; first-quarter results due after the close on April 29.
Edison International elected M. Susan Hardwick, former CEO of American Water Works, as an independent director effective April 23, 2026. CFO Maria Rigatti will resign effective July 3, 2026 and retire September 1, 2026, and Aaron D. Moss, currently SCE's CFO, will succeed her as EIX CFO on July 3, 2026.
Board increased from 11 to 12 members to seat M. Susan Hardwick, effective April 23, 2026.
Maria Rigatti resigns as EIX CFO effective July 3, 2026 and retires September 1, 2026.
Aaron D. Moss, 55, to become EIX Executive Vice President and CFO effective July 3, 2026, with an annual salary of $730,000 from July 4, 2026.
Board amended EIX Bylaws to clarify officer duties related to the CFO, Controller and Treasurer roles.
Exagen director Ana Hooker resigned from the Board, including her Audit Committee seat and chair role on the Nominating and Corporate Governance Committee, effective April 17, 2026. The filing says the resignation was not due to any disagreement with the company on its operations, policies or practices, and the board was reduced from eight to seven members.
Ana Hooker resigned from the Board effective April 17, 2026, the date she notified the Board.
Hooker was a member of the Audit Committee and chair of the Nominating and Corporate Governance Committee.
Board size decreased from eight to seven members as of the effective time.
The filing states no disagreement with the company on operations, policies or practices was the reason for the resignation.
Expedia Group said CFO Scott Schenkel will step down effective May 11, 2026, and named Derek Andersen, formerly CFO of Snap Inc., as his successor. Schenkel stays through the first-quarter earnings call on May 7, 2026, and leaves the company on May 16, 2026, and the filing says his departure involved no disagreement with the company on operations, policies, or accounting.
Derek Andersen was CFO of Snap Inc. from May 2019 through April 2026 and previously worked at Amazon.com, Inc. from March 2011 to June 2018.
Andersen's employment agreement sets a $1 million annual base salary and a $2.5 million cash signing bonus paid over two years.
His initial equity award is RSUs valued at $17 million, and he is eligible for annual equity awards with a target value of $10 million.
Schenkel remains with the company through May 7, 2026, and departs on May 16, 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.