815 material Form 8-K filings that 659 companies we cover made with the SEC in March 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).
Harmonic Inc. signed an Asset Purchase Agreement on March 20, 2026, to sell its Video Business to Leone Media Inc. (d/b/a MediaKind) for $145 million in cash, subject to adjustment for net working capital, cash and debt, and selling expenses. The sale is expected to close in the second quarter of 2026, subject to customary regulatory approvals and other closing conditions. The filing does not include financial results for the business, so its effect on Harmonic's earnings is not stated.
Purchase price of $145 million in cash, subject to adjustment at closing
Put Option exercised March 16, 2026, after French works council consultation completed March 12, 2026; APA executed March 20, 2026
Closing expected in the second quarter of 2026; either party may terminate if conditions are unmet by June 8, 2026, extendable to September 8, 2026
Harmonic agrees not to compete with the business for three years after closing
SiriusPoint International, a subsidiary of SiriusPoint Ltd., signed a Settlement Agreement with its President and CEO Rob Gibbs on March 17, 2026, in connection with his departure. The severance package is 401,700 GBP, paid in 12 monthly installments after his last day of employment on April 30, 2026, and the company will also cover some medical and life assurance costs into 2027.
Rob Gibbs, President & CEO of SiriusPoint International, is departing; his last day of employment is April 30, 2026.
Severance is 401,700 GBP, paid in 12 equal monthly installments, and includes payment in lieu of his six-month notice period.
Gibbs will not receive a bonus for 2025, and medical coverage is to continue through April 30, 2027.
The settlement includes a general release of claims and ongoing confidentiality, non-compete, and non-solicitation obligations.
Sir Martin Franklin, the company's Executive Chairman, will not seek reelection and will leave the Board at the 2026 annual meeting or by May 4, 2026. The Board is reducing its size from eight to seven directors effective May 4, 2026, and Ian Ashken will become Non-Executive Chairman at the annual meeting. The filing reports no disagreement with the company and no financial results, so the change is governance-related rather than a change in operating performance.
Sir Martin E. Franklin will not seek reelection and will retire from the Board by May 4, 2026
Board size reduced from eight to seven directors, effective May 4, 2026
Ian G.H. Ashken, a founding director since 2013, to become Non-Executive Chairman at the 2026 Annual Meeting
Filing states there was no disagreement between Franklin and the company
On March 22, 2026, Everest Underwriting Group (Ireland) Limited agreed to sell Everest Insurance Company of Canada, which holds the company's Canadian Retail Insurance operations, to The Wawanesa Mutual Insurance Company for CAD 410 million, subject to adjustment. The company describes the sale as a step in its plan to exit Commercial Retail Insurance and focus on Reinsurance and Global Wholesale and Specialty Insurance, and expects the deal to close in the second half of 2026. The filing does not state the sale's effect on earnings or book value.
Buyer is The Wawanesa Mutual Insurance Company; purchase price is CAD 410 million, subject to adjustment
Agreement signed March 22, 2026 and announced in a March 23, 2026 press release
Closing requires Canadian antitrust approval from the Commissioner of Competition and insurance approval from the Minister of Finance
Everest Reinsurance Company (Canadian Branch) will reinsure certain pre-closing liabilities of the unit under a loss portfolio transfer
Strategy Inc added three sales agents and three at-the-market sales programs covering up to $21.0 billion of common stock, up to $21.0 billion of STRC preferred stock and up to $2.1 billion of STRK preferred stock, all under an existing shelf registration. The filing also ended the prior STRK preferred offering effective March 22, 2026, and changed the authorized share counts for STRC and STRK preferred stock, which gives the company room to sell more shares that could dilute existing holders.
Moelis, Alliance and StoneX were added as sales agents under the Omnibus Sales Agreement dated November 4, 2025.
New offering capacity: up to $21.0 billion of common stock, up to $21.0 billion of STRC preferred stock and up to $2.1 billion of STRK preferred stock.
Authorized STRC preferred shares were increased from 70,435,353 to 282,556,565; authorized STRK preferred shares were decreased from 269,800,000 to 40,270,744.
Abbott Laboratories completed its acquisition of Exact Sciences on March 23, 2026, under a merger agreement dated November 19, 2025. Exact Sciences shareholders received $105.00 in cash per share, and Exact Sciences is now a wholly owned Abbott subsidiary, so shareholders of both companies should watch how the combined business is integrated.
Each Exact Sciences common share was converted into the right to receive $105.00 in cash, without interest, less applicable withholding taxes.
March 20, 2026 was the last day Exact Sciences shares traded on the Nasdaq Stock Market.
Exact Sciences survives the merger as a direct, wholly owned subsidiary of Abbott.
Abbott says the deal adds Cologuard, Oncotype DX, Oncodetect and Cancerguard to its diagnostics portfolio.
On March 22, 2026, Tripadvisor entered a cooperation agreement with activist investor Starboard Value LP. The Board expanded from eight to ten directors, Dhiren R. Fonseca and Andrew F. Cates were appointed effective immediately, and amended bylaws allow stockholders to act by written consent and call special meetings. For shareholders, the agreement sets the Board's composition for the 2026 Annual Meeting and includes Starboard voting and standstill commitments.
Board increases from eight to ten directors; Fonseca and Cates appointed March 22, 2026, with terms expiring at the 2026 Annual Meeting
Starboard may recommend two additional director candidates for the 2026 Annual Meeting slate
Amended and Restated Bylaws, effective March 22, 2026, permit stockholder action by written consent and stockholder-called special meetings
Starboard agreed to vote its shares for the Board's nominees at the 2026 Annual Meeting and to customary standstill provisions
Stryker said in a further update to its March 11 and March 12 disclosures that its cybersecurity incident is contained, and that no malicious activity directed at customers, suppliers, vendors or partners has been identified. The company said the incident disrupted its corporate network, and it has not yet determined whether the incident is reasonably likely to have a material impact on the company, so the operational and financial effects remain under assessment.
Earlier 8-K filings on March 11 and March 12, 2026 first disclosed the incident; this update is dated March 23, 2026.
Palo Alto Networks Unit 42 letter dated March 20, 2026 reports no evidence of unauthorized activity since March 11, 2026 and no active persistent access.
Disruption affected the corporate network, including the Microsoft environment; the company says manufacturing capability is ramping as critical lines and plants come back online.
The company has not yet determined whether the incident is reasonably likely to have a material impact on the company.
Coeur Mining completed its acquisition of New Gold on March 20, 2026, issuing about 393 million Coeur common shares to New Gold shareholders and entering a new $1.0 billion revolving credit facility. The company also announced an expanded $750 million share repurchase program, an inaugural $0.02 per share semiannual dividend policy, and consolidated 2026 guidance that includes nine months of New Afton and Rainy River production, which means the larger share count and capital return plans both affect shareholders.
The arrangement closed on March 20, 2026; each New Gold share was exchanged for 0.4959 Coeur shares, and about 393 million Coeur shares were issued.
Authorized Coeur common stock was increased from 900 million to 1.3 billion shares effective March 19, 2026.
The $750 million repurchase program replaces the prior $75 million program; the first $0.02 per share dividend is expected in the second quarter of 2026.
2026 consolidated gold production guidance is 680,000 to 815,000 ounces, with nine months of contribution from New Afton and Rainy River.
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.