L3Harris Ousts CEO Kubasik Over Conduct Probe, Shares Slide Over 4% as Sam Mehta Named Successor

LHX removed chairman and chief executive Christopher Kubasik on August 17, 2026, effective immediately, after a board-directed investigation found conduct inconsistent with the company's code of conduct. The board did not describe the conduct. Shares of the defense prime fell roughly 4% on the session .

The board's most important disclosure was what the investigation did not touch. L3Harris said the conduct was unrelated to the company's financial reporting, internal controls, customer relationships, and operational performance, language that is aimed squarely at the two questions a defense investor asks first: is there an accounting problem, and is there a program problem. Absent either, the event is a governance shock rather than a thesis break.

Succession was same-day and internal. Sam Mehta, 53, becomes chief executive and president. Mehta joined L3Harris in January 2023 and most recently ran the Space and Mission Systems and the Communications and Spectrum Dominance segments, two of the businesses carrying the company's growth narrative. Lead independent director Lewis Hay steps up as chairman, splitting the chair and chief executive roles that Kubasik had held together. Under his separation agreement Kubasik receives no severance and no accelerated vesting, though he may exercise previously vested options.

For investors the near-term questions are continuity rather than strategy. Watch whether the company reaffirms its guidance and its Trusted Disruptor cost targets at the next quarterly report, whether any customer or program disruption surfaces around the transition, and whether the split of chair and chief executive roles becomes permanent. Broader defense budget momentum remains the larger driver of the shares, and a leadership change that leaves reporting and programs untouched may prove to be a smaller factor than the 4% move suggests.

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