The Investigative Journal’s daily review of U.S. Securities and Exchange Commission (SEC) EDGAR filings and enforcement records turned up an unusually busy disclosure calendar on June 29, 2026. The standout item is a building-materials megadeal: Martin Marietta Materials disclosed an agreement to acquire Lhoist North America for $13.5 billion. Around it, a major agriculture spin-off advanced, a defense contractor reported revenue that more than doubled, and the SEC’s enforcement division logged fresh actions spanning a nuclear-plant insider-trading case, an alleged spoofing scheme, and a fake crypto platform. What follows is a digest of the most consequential filings, each linked to its primary source on SEC.gov. Allegations described below are unproven; defendants are entitled to a defense and, where noted, have settled without admitting or denying the findings.
Corporate Disclosure Watch
1. Martin Marietta to buy Lhoist North America in a $13.5 billion cash-and-stock deal
Martin Marietta Materials, Inc. (NYSE: MLM) filed a Form 8-K reporting that, on June 27, 2026, it entered into a Securities Sale Agreement with Belgium-based LNA Holding SRL to acquire all outstanding equity in Lhoist North America, Inc., a producer of lime, dolomitic lime, limestone- and dolomitic-stone-based industrial minerals, and aggregates. According to the filing, total consideration is $13.5 billion, comprising $7 billion in cash and 10,953,543 newly issued Martin Marietta shares valued at roughly $6.5 billion based on the 15-trading-day volume-weighted average price through June 26, 2026.
The agreement, attached to the filing as Exhibit 2.1, conditions closing on expiration of the waiting period under the Hart-Scott-Rodino Antitrust Improvements Act and other regulatory approvals — a meaningful hurdle for a transaction that consolidates lime and aggregates capacity. The filing sets an initial “long-stop” date of October 31, 2026, automatically extendable to as late as June 15, 2027 if antitrust clearances remain outstanding, and provides for a $350 million termination fee payable by Martin Marietta if specified regulatory conditions are not met.
For TIJ’s accountability lens, the stock component is notable: issuing nearly 11 million shares dilutes existing holders and effectively makes the seller a Martin Marietta shareholder. The antitrust review will be the key variable to watch. Filing: Martin Marietta Materials Form 8-K (EDGAR).
2. Corteva advances seed-business spin-off into “Vylor, Inc.”; four directors to exit board
Corteva, Inc. (NYSE: CTVA) disclosed in a Form 8-K dated June 26, 2026 that four directors — Karen Grimes, Marcos Lutz, Charles Magro, and Kerry Preete — have mutually agreed to resign from Corteva’s board in connection with the company’s anticipated spin-off of its seed business into an independent, publicly traded company named Vylor, Inc. The resignations are conditioned on consummation of the separation, and each departing director is expected to join Vylor’s board. The filing states the departures are “not the result of any disagreement” relating to Corteva’s operations, policies, or practices.
Under a Regulation FD item, Corteva said its subsidiary Vylor filed its first Form 10 registration statement with the SEC, a document that lays out the seed unit’s business, strategy, and historical financial results. The company furnished two press releases announcing the post-separation boards of both Corteva and Vylor.
The split would reshape one of the world’s largest agriculture-input companies, separating seed from crop protection. Investors and TIJ readers should review the forthcoming Form 10 for Vylor’s standalone financials and any related-party arrangements between the two entities. Filing: Corteva Form 8-K (EDGAR).
3. AeroVironment’s annual report shows revenue more than doubling after BlueHalo deal
Defense contractor AeroVironment, Inc. (Nasdaq: AVAV) filed its Form 10-K for the fiscal year ended April 30, 2026. Structured financial data submitted with the filing show net revenue of approximately $1.98 billion, up from $820.6 million in the prior fiscal year — an increase that the filing attributes in part to its acquisition of BlueHalo, referenced throughout the report’s purchase-accounting disclosures.
The maker of small unmanned aircraft, loitering munitions, and related systems has been a beneficiary of elevated demand tied to defense modernization. A revenue jump of that magnitude warrants scrutiny of how much growth is organic versus acquisition-driven, along with integration costs, backlog, and customer concentration disclosed in the management discussion.
TIJ will examine the 10-K’s risk factors and segment detail in follow-up coverage. Filing: AeroVironment Form 10-K (EDGAR).
4. Lennar’s quarterly report offers a fresh read on the housing market
Homebuilder Lennar Corporation (NYSE: LEN) filed its Form 10-Q for the quarter ended May 31, 2026. Structured data accompanying the filing show total revenues of about $7.94 billion for the three-month period and net income of approximately $304.8 million; for the first six months of the fiscal year, revenues were roughly $14.56 billion with net income near $534.2 million.
As one of the nation’s largest homebuilders, Lennar’s results function as a barometer for housing demand, mortgage-rate sensitivity, and incentive activity. The filing’s detail on home deliveries, average selling prices, and gross margins offers a window into whether builders are buying down rates or cutting prices to sustain volume.
TIJ flags Lennar’s margin commentary as worth tracking against peers reporting later this cycle. Filing: Lennar Form 10-Q (EDGAR).
5. Paramount Skydance to decide annual-meeting matters by written consent
Paramount Skydance Corporation (Nasdaq: PSKY) filed a Form 8-K on June 29, 2026 furnishing an information statement for its 2026 Annual Meeting, scheduled as a webcast on July 21, 2026. The filing indicates the meeting’s business — election of ten director nominees and ratification of PricewaterhouseCoopers LLP as auditor for fiscal 2026 — will be decided by written consent of Class A shareholders, who hold the company’s voting power. Holders of the publicly traded Class B stock are “not entitled to vote” on the pending matters.
The document states that holders of a majority of Class A voting power intend to act by written consent in favor of every proposal, and explicitly tells investors: “We are not asking you for a proxy.” The information statement, signed by Chief Legal Officer Makan Delrahim, reflects the controlled-company structure that followed the Paramount–Skydance combination.
The mechanism is lawful and disclosed, but it concentrates governance decisions in the controlling holder — a structure worth flagging for minority investors. Filing: Paramount Skydance Form 8-K (EDGAR).
SEC Enforcement
6. SEC charges former Constellation nuclear engineer over Three Mile Island restart trades
In Litigation Release No. 26573 (June 24, 2026), the SEC announced charges against Casey Muggleston, a nuclear engineer formerly employed by Constellation Energy Corporation, for alleged insider trading. According to the SEC’s complaint, Muggleston had access in 2024 to material nonpublic information about Constellation’s confidential plan to restart its nuclear plant at Three Mile Island — internally code-named “Project Tetris” — and allegedly traded in Constellation securities ahead of the public announcement.
The allegations are unproven and remain to be tested in court. The case is notable because it ties an enforcement action to one of the most closely watched stories in the U.S. power sector: the revival of a high-profile nuclear site to meet surging electricity demand. TIJ will monitor the docket for Constellation’s response and any further filings. Source: SEC Litigation Release No. 26573.
7. California day trader settles alleged spoofing scheme in foreign ADRs
In Litigation Release No. 26574 (June 25, 2026), the SEC disclosed settled charges against Mingran Wang of Fremont, California, for an alleged spoofing scheme. According to the SEC, from October 2021 to at least November 2024 Wang manipulated the prices of more than 150 thinly traded American Depositary Receipts by placing buy and sell orders he never intended to execute, then trading against the prices those orders moved — conduct the agency says yielded more than $1.3 million in ill-gotten gains.
The SEC characterized the matter as a settled action, which is typically resolved without the defendant admitting or denying the allegations and is subject to court approval. The case underscores continued regulatory attention to manipulative order practices in lightly traded securities. Source: SEC Litigation Release No. 26574.
8. SEC wins default judgments in alleged “NanoBit” crypto relationship-investment scam
In Litigation Release No. 26576 (June 29, 2026), the SEC said the U.S. District Court for the Eastern District of New York entered a final default judgment on June 16, 2026 against four entities and two individuals tied to an alleged “relationship investment scam” involving a purported crypto-asset trading platform called NanoBit. The SEC’s 2024 complaint alleged that, from at least September 2023 to June 2024, scheme participants posed as financial professionals in WhatsApp groups to build investors’ trust before steering them into the fake platform and misappropriating their funds.
The pattern — social-media solicitation, manufactured trust, and a counterfeit trading interface — matches what investigators commonly call “pig-butchering” fraud. The default judgments resolve the SEC’s civil claims against the named defendants. Source: SEC Litigation Release No. 26576.
Filings That May Warrant Deeper TIJ Investigation
Three threads stand out for follow-up. First, the Martin Marietta–Lhoist antitrust review: a $13.5 billion combination in lime and aggregates invites scrutiny of regional market concentration, and the filing’s own $350 million regulatory termination fee signals the parties anticipate a serious review. Second, Corteva’s Vylor Form 10 deserves a close read once its standalone financials and inter-company agreements are public, as spin-offs can shift debt and liabilities between the parent and the new entity. Third, the Constellation insider-trading case connects securities enforcement to the politically salient nuclear-restart story and merits docket tracking.
Beyond individual filings, the regulatory backdrop is shifting. Recent SEC press releases show the Commission has proposed rescinding its climate-related disclosure rules (May 29, 2026), proposed permitting optional semiannual rather than quarterly reporting by public companies (May 5, 2026), and proposed rescinding the Regulation NMS order-protection rule (June 11, 2026). Each proposal could change what investors see, and how often — developments TIJ will continue to track as they move through public comment.
Methodology and right of reply: This digest summarizes public records filed with or published by the U.S. Securities and Exchange Commission and identified via SEC EDGAR and the Commission’s newsroom and litigation pages. Financial figures for annual and quarterly reports are drawn from the structured (XBRL) data submitted with each filing. Enforcement matters describe allegations that are unproven unless a court has entered judgment; settled actions are typically resolved without an admission of wrongdoing. The Investigative Journal welcomes responses from any company or individual named here and will update this report with substantive replies.