Lockheed Martin Corp. director John M. Donovan reported a June 30, 2026 change in beneficial ownership tied to director compensation arrangements, not an open-market purchase or sale of Lockheed Martin common stock. The reported transaction involved phantom stock units acquired at a price of $509.46 per share through Donovan’s deferral of director retainer fees under the Lockheed Martin Corporation Directors Deferred Compensation Plan. The filing notes that these phantom stock units convert economically to Lockheed Martin common stock on a one-for-one basis, but they are settled in cash when the director retires or otherwise terminates service. The transaction is described as exempt under Section 16(b). The filing also states that Donovan’s holdings as of the reportable transaction date include additional acquisitions through dividend reinvestment. Separately, it references previously acquired stock units under the Lockheed Martin Corporation Amended and Restated Directors Equity Plan, also treated as exempt under Section 16(b). Those stock units may be settled in cash or stock, depending on the director’s election, generally upon retirement or termination of service. For awards granted on or after January 1, 2018, Lockheed Martin’s non-employee directors who have satisfied the company’s stock ownership guidelines may elect to receive payment of vested awards, along with related dividend equivalents, on the first business day of April following vesting rather than waiting until retirement or termination. The text provided does not show the number of phantom stock units acquired, the transaction code, or the total number of derivative securities beneficially owned after the transaction. The Form 4 was signed on Donovan’s behalf by Lynda M. Noggle, attorney-in-fact, on July 2, 2026.