1,041 material Form 8-K filings that 824 companies we cover made with the SEC in November 2025, 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).
Halozyme completed the sale of $1,500.0 million of convertible senior notes due 2031 and 2032, with net proceeds of about $1.47 billion. The company used part of the proceeds to repurchase existing convertible notes for about $1.020 billion in cash and to fund about $182.7 million of capped call transactions, with the remainder for general corporate purposes.
Total principal of $1,500.0 million: $750.0 million of 0% notes due 2031 and $750.0 million of 0.875% notes due 2032, including $100.0 million of each from the initial purchasers' option
Net proceeds of about $1.47 billion; about $1.020 billion paid in cash to repurchase 0.25% notes due 2027 and 1.00% notes due 2028, including accrued interest
Initial conversion price of about $87.20 per share; the 2032 notes pay interest semi-annually at 0.875% beginning May 15, 2026
IES Holdings agreed on November 7, 2025 to acquire Gulf Island Fabrication in an all-cash merger at $12.00 per share, or an aggregate equity value of approximately $192 million. Gulf Island shareholders would receive a 52% premium to the November 6, 2025 trading price, and the deal is expected to close in the quarter ending March 31, 2026, subject to shareholder, regulatory and other approvals.
Gulf Island common stock would convert into $12.00 in cash per share, an aggregate equity value of approximately $192 million
The price represents a 52% premium to Gulf Island's trading price as of November 6, 2025
Closing is expected in the quarter ending March 31, 2026, subject to Gulf Island shareholder approval and HSR Act clearance
Gulf Island would pay IES a termination fee of approximately $7.6 million under specified circumstances
Lantheus disclosed that CEO Brian Markison is retiring under agreements dated November 6, 2025. He will receive base salary through December 31, 2025, and will then serve as an advisor from January 1 to March 31, 2026, at $83,333 per month, with the option to extend. The filing says his outstanding equity awards will keep vesting through his retirement date, which matters to shareholders because it defines the transition terms for the company's top executive.
CEO Brian Markison's retirement agreement and consulting agreement are both effective November 6, 2025.
Base salary continues through the retirement date of December 31, 2025.
Advisory fee is $83,333 per month for consulting from January 1, 2026 through March 31, 2026, with the option to extend.
A lump sum equal to his 2025 earned annual cash bonus, if any, will be paid within 60 days of the retirement date.
Synopsys's Board approved a restructuring plan on November 9, 2025, expected to end about 10% of the company's workforce as of fiscal 2025 year-end, following its acquisition of ANSYS. The company estimates pre-tax GAAP charges of $300 million to $350 million, which will weigh on reported results while management aims to free resources for growth investments and efficiency.
Board approved the restructuring plan on November 9, 2025.
Plan expected to terminate about 10% of workforce as of fiscal 2025 year-end.
Estimated pre-tax GAAP charges of $300 million to $350 million, mainly severance and site closures.
Majority of workforce reductions expected in fiscal 2026; plan substantially complete by end of fiscal 2027.
TransDigm reported fourth-quarter fiscal 2025 results for the period ended September 30, 2025, with net sales up 12% to $2,437 million and net income up 30% to $609 million. The company also issued fiscal 2026 guidance calling for net income of $1,906 million to $2,026 million, below fiscal 2025's $2,074 million, which it attributed mainly to added interest expense from fourth-quarter financing.
Q4 net sales $2,437 million, up 12%; net income $609 million, up 30%; EPS $7.75, up 34%
Q4 GAAP EPS reduced by $2.75 from dividend equivalent payments tied to the $90.00 per share special dividend paid September 12, 2025
FY2026 guidance: net sales $9,750 million to $9,950 million; net income $1,906 million to $2,026 million
FY2026 adjusted EPS guidance of $36.49 to $38.53 versus $37.33 in fiscal 2025
Parker-Hannifin agreed on November 10, 2025 to acquire Filtration Group, a private Oakbrook Terrace, Illinois filtration technology company, in a cash deal valued at $9.25 billion on a cash-free, debt-free basis, subject to a working capital adjustment. The purchase price is expected to be financed with new debt and cash on hand, and completion depends on closing conditions including Hart-Scott-Rodino approvals.
Cash purchase price of $9.25 billion, subject to a net working capital adjustment
Expected to be financed with new debt and cash on hand
Closing requires Hart-Scott-Rodino approvals and a preclosing transfer of Filtration Group's Facet Filtration business to its stockholders
Either party may terminate if the merger is not completed by February 10, 2027, subject to extension
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.