1,796 material Form 8-K filings that 1,448 companies we cover made with the SEC in May 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).
Ideal Power Inc. closed a registered direct offering on May 18, 2026, selling 3,220,961 shares of common stock and pre-funded warrants for up to 2,070,044 shares, for gross proceeds of about $30.0 million. The company says it will use the net proceeds to advance commercialization of its B-TRAN technology, and the sale adds new shares that existing shareholders will share ownership of.
Offering of 3,220,961 common shares plus pre-funded warrants for up to 2,070,044 shares, 5,291,005 shares in total, priced at the market under Nasdaq rules
Gross proceeds of about $30.0 million before offering expenses; closed May 18, 2026
Titan Partners Group, a division of American Capital Partners, was sole placement agent, with a 7.0% cash fee on gross proceeds plus $75,000 for fees and expenses
Company and directors and executive officers agreed to 45-day lock-up periods after the closing, subject to certain exceptions
GSR V Acquisition Corp., a blank check company, closed its initial public offering of 23,000,000 units at $10.00 per unit on May 15, 2026, for gross proceeds of $230,000,000, including the underwriter's full exercise of its over-allotment option. The company placed $230,000,000 in a U.S. trust account, and it must complete an initial business combination within 18 months of the IPO closing, or up to 21 months at the sponsor's discretion, or return public shares.
23,000,000 units sold at $10.00 each, for gross proceeds of $230,000,000, including 3,000,000 units from the over-allotment option
$230,000,000 placed in a trust account with Odyssey Transfer and Trust Company on May 15, 2026
Private sale of 671,000 private placement units for approximately $6,710,000 to the sponsor and Polaris Advisory Partners
Deadline to complete a business combination is 18 months from the IPO closing, or up to 21 months at the sponsor's discretion
Iron Dome Acquisition I Corp., a special purpose acquisition company, closed its initial public offering of 15,000,000 units at $10.00 per unit on May 18, 2026, for gross proceeds of $150,000,000 before underwriting discounts, commissions and offering expenses. The company has no operating business; it was formed to pursue a merger or similar business combination, and it must complete one within 18 months of the IPO closing or redeem public shares.
Closed 15,000,000-unit IPO at $10.00 per unit on May 18, 2026, with gross proceeds of $150,000,000
$150,750,000 of IPO and private placement proceeds placed in a trust account with Odyssey Transfer and Trust Company as trustee
Sponsor purchased 2,750,000 private placement warrants at $1.00 each, for gross proceeds of $2,750,000
Eyal Waldman, David DeWalt and Paul Hodermarsky appointed to the board on May 14, 2026; the company has 18 months to complete an initial business combination
On May 14, 2026, APi Group DE, Inc., a wholly owned subsidiary of APi Group Corporation, closed a $500 million offering of 5.750% senior notes due 2034 and an amendment to its credit agreement. The amendment raises revolving credit commitments from $750 million to $1.0 billion and extends the revolver to 2031 and the term loan to 2033. The company says the net proceeds will fund general corporate purposes, including previously announced acquisitions, and the new notes add to its outstanding debt.
$500 million of 5.750% senior notes due June 1, 2034, sold in a private offering and closed May 14, 2026
Revolving credit commitments increased from $750 million to $1.0 billion; revolver maturity extended to May 14, 2031
Term loan maturity extended to May 14, 2033; letter of credit sublimit raised from $250 million to $300 million
Proceeds intended for general corporate purposes, including previously announced acquisitions
Ichor Holdings, Ltd. entered a sales agreement on May 18, 2026, allowing it to sell up to $200 million of ordinary shares through four sales agents. The company says it intends to use net proceeds to repay its term loan facility and for general corporate purposes, and the shares will be sold under an effective shelf registration.
Sales agreement dated May 18, 2026 with TD Securities (USA) LLC, Stifel, Needham & Company and Craig-Hallum Capital Group, allowing sales of up to $200,000,000 in ordinary shares
Agents may be paid commissions of up to 3.0% of gross sales price; the company has no obligation to sell any shares
Proceeds intended to repay outstanding term loan indebtedness and for general corporate purposes
Knife River Corporation entered into a Second Amendment to its Credit Agreement on May 15, 2026, increasing its existing term B loans by $400 million and cutting the interest rate margin by 0.25%. After the change, term B loans outstanding total $895 million, and the company plans to use the proceeds to refinance existing term B loans, repay revolver borrowings and fund working capital and general corporate purposes.
Term B loans increased by $400 million; total outstanding is $895 million after the amendment
Interest rate margin reduced by 0.25%; SOFR loans bear 1.75% per annum and alternate base rate loans bear 0.75% per annum
Proceeds to refinance existing term B loans, repay Revolving Credit Facility borrowings and fund working capital and general corporate purposes
Amendment signed May 15, 2026 with JPMorgan Chase Bank, N.A. as administrative agent; filed as Exhibit 10.1
The Narragansett Electric Company, doing business as Rhode Island Energy and a wholly owned subsidiary of PPL Corporation, issued $400 million of 6.000% senior notes due May 15, 2056 on May 18, 2026. The company expects net proceeds of $396.3 million, which it intends to use to repay short-term debt incurred mainly for capital expenditures and general corporate purposes. The notes are not guaranteed by PPL Corporation, so the obligation sits at the subsidiary level.
$400 million principal at a 6.000% annual rate, with interest paid semiannually on May 15 and November 15, beginning November 15, 2026
Net proceeds of $396.3 million before other fees and expenses, to be used to repay short-term debt
Senior unsecured notes not guaranteed by PPL Corporation or its other subsidiaries; issued under a Seventh Supplemental Indenture dated May 18, 2026 with The Bank of New York Mellon
Akamai said it plans to offer $1.3 billion of 2030 convertible notes and $1.3 billion of 2032 convertible notes to qualified institutional buyers, subject to market conditions. The same day, it amended its credit agreement to raise the maximum consolidated leverage ratio covenant to 4.75:1.00 for the four quarters ending June 30, 2026 and September 30, 2026. Shareholders could face potential dilution, and the company plans to use part of the proceeds for capital expenditures at its Cloud Infrastructure Services business.
Proposed offering: $1.3 billion of 0% convertible senior notes due May 15, 2030 and $1.3 billion due May 15, 2032, with initial purchasers able to buy up to an additional $200.0 million of each series
Credit agreement Amendment No. 3 with JPMorgan Chase Bank, N.A. as agent raises the maximum leverage ratio covenant to 4.75:1.00 for quarters ending June 30 and September 30, 2026
About $350 million of proceeds is planned for share repurchases from note purchasers, with the remaining proceeds for accelerated capital expenditures at the Cloud Infrastructure Services business and general corporate purposes
Offering terms, including conversion rate and offering price, will be set at pricing and the offering is not assured
Old Republic International priced a registered underwritten offering of $700 million in 5.700% senior notes due June 1, 2036, on May 13, 2026. The company issued the notes under an indenture with Wilmington Trust Company as trustee, adding $700 million of direct debt to its obligations.
Principal amount of $700 million; interest of 5.700% paid semi-annually on June 1 and December 1, starting December 1, 2026
Notes mature June 1, 2036; redeemable at any time before March 1, 2036 at the greater of par or a Treasury-based make-whole price plus 20 basis points
Underwriters are Morgan Stanley & Co. LLC and PNC Capital Markets LLC; trustee is Wilmington Trust Company
Advanced Energy Industries completed a private offering of $1.15 billion in 0% convertible senior notes maturing May 15, 2031, and used part of the net proceeds of about $1,128.1 million to buy back $438.3 million of its 2.50% convertible notes due 2028 in exchange for cash and shares. The filing says capped call transactions are expected to reduce potential dilution to shareholders from conversions, up to a cap.
$1.15 billion of 0% convertible senior notes due May 15, 2031, including the full $150.0 million option exercised by the initial purchasers
Net proceeds of about $1,128.1 million; $69.0 million paid for capped call confirmations and about $442.4 million in cash plus about 1.98 million common shares used to exchange $438.3 million of 2028 notes
Initial conversion price of about $508.78 per share; $136.7 million of 2028 notes remain outstanding; notes cannot be redeemed before May 21, 2029, except in a cleanup redemption
CoreWeave's subsidiary CoreWeave Financing DDTL V, LLC signed a $3.1 billion delayed draw term loan on May 15, 2026, and the company announced the closing on May 18, 2026. The loan is guaranteed by CoreWeave, Inc. and secured by substantially all assets of the borrower and its subsidiaries, and it carries a debt service coverage covenant, so it adds a significant secured debt obligation for shareholders to weigh against the funding it provides for customer infrastructure.
Facility size is $3.1 billion, with draws available until a commitment termination date in September 2026 and maturity on November 15, 2031.
Pricing is SOFR plus a 4.50% margin for SOFR loans, with a 0.50% annual undrawn fee.
Obligations are secured by substantially all assets of the borrower and its subsidiaries and guaranteed by CoreWeave, Inc.; a debt service coverage ratio of at least 1.35x is required starting after the earlier of commitment reduction to ze
Proceeds will fund infrastructure for two customer contracts with non-investment grade customers; the facility is rated Ba2 by Moody's and BB+ by Fitch.
On May 18, 2026, Owens-Brockway Glass Container Inc., an indirect wholly owned subsidiary of O-I Glass, completed a private offering of $500 million in 9.500% Senior Notes due 2033. The notes are guaranteed by Owens-Illinois Group and certain of its U.S. subsidiaries, and the company is adding this debt to its obligations. Shareholders may want to note the new borrowing and its fixed 9.500% interest rate, as the filing does not describe how the proceeds will be used.
Principal amount: $500 million of 9.500% Senior Notes due 2033, sold under Rule 144A and Regulation S
Issuer: Owens-Brockway Glass Container Inc., an indirect wholly owned subsidiary of O-I Glass, Inc.
Guarantors include Owens-Illinois Group, Inc. and certain U.S. subsidiaries that guarantee its credit agreement
Indenture dated May 18, 2026, with Regions Bank as trustee, filed as Exhibit 4.1
S&P Global announced the start of a $2,000,000,000 private offering of senior notes due 2029, 2031 and 2036 by Mobility Global Inc., a holding company for its Mobility division that S&P Global plans to spin off to shareholders. Net proceeds will be placed in escrow until conditions tied to the separation are met, and the proceeds are intended to fund a cash payment to S&P Global. The filing does not state the coupon rates, the offering size per tranche, or a separation date.
Offering size is $2,000,000,000 across senior notes due 2029, 2031 and 2036, sold privately to qualified institutional buyers and non-US persons under Rule 144A and Regulation S.
Mobility Global has also entered into a $500 million senior unsecured revolving credit facility.
Net proceeds will be held in escrow until separation conditions are satisfied, then used to make a cash payment to S&P Global.
The notes are unregistered and may not be offered or sold in the United States without an exemption; the filing does not give a separation date.
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.