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).
On March 2, 2026, Illumination Acquisition Corp I, a blank check company, completed its initial public offering of 23,000,000 units at $10.00 per unit, for gross proceeds of $230,000,000, including the full exercise of the underwriters' over-allotment option. The company also sold 625,000 private placement units for $6,250,000 to its sponsor and BTIG, LLC. The IPO proceeds are held in a trust account and can be released only for a business combination or redemption of public shares; the company has not yet selected a target, so shareholders have no operating business yet.
23,000,000 units sold at $10.00 each on March 2, 2026, including 3,000,000 over-allotment units, for $230,000,000 in gross proceeds
625,000 private placement units sold at $10.00 each for $6,250,000 to the sponsor and BTIG, LLC
$230,000,000 placed in a trust account; the company has 24 months from the IPO closing to complete a business combination and has not selected a target
Duke Energy entered into an Equity Distribution Agreement on March 6, 2026, creating an at-the-market program under which it may sell up to $6 billion of common stock over time through a group of sales agents. The company may also enter forward sale agreements with forward purchasers, under which it expects to receive proceeds only when those agreements settle, so the share count and future proceeds depend on how and when the program is used.
Program covers up to $6 billion aggregate sales price of common stock, par value $0.001 per share, sold from time to time.
Sales agents receive commissions of up to 1.00% of the sales price of shares sold through them.
Company will not initially receive proceeds from borrowed shares sold under forward sale agreements; it expects proceeds upon future physical settlement.
Filing is dated March 6, 2026; agreement and form forward sale agreements are filed as Exhibits 99.1, 10.1 and 10.2.
O'Reilly Automotive entered into an underwriting agreement on March 5, 2026 to issue and sell $850 million of 5.100% senior notes due 2036. The company expects about $841 million in net proceeds, which it plans to use to repay its 3.550% senior notes due 2026, reduce commercial paper borrowings and for general corporate purposes.
Principal amount: $850 million of 5.100% senior notes due 2036
Estimated net proceeds: approximately $841 million after underwriting discounts and expenses
Proceeds to repay 3.550% senior notes due 2026 at maturity and a portion of commercial paper
Underwriters are BofA Securities, J.P. Morgan Securities and Wells Fargo Securities
SL Green Realty Corp. entered into a partnership amendment on March 4, 2026 to issue 252,000 Series Y Preferred Units of its operating partnership. The units were issued as part of the consideration for acquiring ownership interests in certain commercial real estate property, and they pay a fixed annual cash distribution of 5.00% on a $25.00 liquidation preference.
Issued 252,000 Series Y Preferred Units, each with a $25.00 liquidation preference
Fixed annual cash distribution of 5.00% of the liquidation preference
Units issued as partial consideration for acquisition of commercial real estate ownership interests
Units are not convertible or exchangeable into other property or securities; issued under Section 4(a)(2) private placement exemption
Entergy Mississippi, LLC sold $650 million of First Mortgage Bonds, 5.05% Series due April 15, 2036, under an underwriting agreement dated March 4, 2026, and the sale closed on March 6, 2026. The bonds were offered under an effective Form S-3 registration statement, and the filing includes the supplemental indenture and legal opinions. This is a routine debt financing and the filing does not disclose its use of proceeds or any effect on earnings.
Principal amount: $650 million of First Mortgage Bonds, 5.05% Series due April 15, 2036
Underwriting agreement entered into March 4, 2026; sale closed March 6, 2026
Offered under Form S-3 Registration Statement No. 333-289302-02, effective upon filing
Exhibits include the Forty-fourth Supplemental Indenture and legal opinions from four firms
Honeywell said its Aerospace unit began a private offering of up to $16 billion of senior notes, tied to the planned spin-off of Honeywell Aerospace expected in the third quarter of 2026. Honeywell also launched tender offers for up to $3.75 billion of U.S. dollar debt and €1.25 billion of euro debt, called for redemption of several note series, and terminated its $3.0 billion 364-day and $4.0 billion five-year credit agreements in favor of new facilities. For shareholders, the filing describes debt restructuring ahead of the separation, with no earnings or guidance figures included.
Aerospace offering of up to $16 billion in senior notes; Honeywell is to receive a cash distribution from the proceeds and is released from its guarantees when the spin-off is completed.
Honeywell entered a $6.0 billion term loan dated March 2, 2026, which must be repaid by March 31, 2026.
Tender offers have an early participation date of March 19, 2026 and an expiration of April 7, 2026, with the tender offers subject to a financing condition.
Honeywell expects to redeem about $3.9 billion of U.S. dollar notes and €1.4 billion of euro notes, with most redemptions set for March 16, 2026 and the 3.500% euro notes set for April 10, 2026.
Effective March 5, 2026, the Fund extended the final mandatory redemption date of its Series 4 Variable Rate Demand Preferred Shares, with an aggregate liquidation preference of $489.5 million, from September 11, 2026 to September 11, 2056. The filing describes the change as a Regulation FD disclosure and does not state the reason for the extension or its effect on dividend rates.
Series 4 Variable Rate Demand Preferred Shares aggregate liquidation preference: $489.5 million
Final mandatory redemption date moved from September 11, 2026 to September 11, 2056
Change effective March 5, 2026; filing dated March 6, 2026
Preferred shares remain senior to common shares in liquidation and dividend payments
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.