Oklo Announces Appointment of Pat Schweiger as Chief Technology Officer

Oklo Inc. (NYSE: OKLO), an advanced nuclear technology company, today announced the appointment of Pat Schweiger, a veteran executive and engineer with over 40 years of leadership experience in the energy sector, as its Chief Technology Officer (CTO).

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Pat Schweiger, Oklo Chief Technology Officer (Image: Oklo)

Schweiger brings deep, hands-on experience across the full lifecycle of energy system development—including engineering design, testing, procurement, construction, startup, operations, and business development. He has played a key role in scaling robust engineering organizations by building high-performing teams and forging strategic partnerships.

“Pat’s decades of experience and expertise in power engineering will be a tremendous asset to Oklo as we move toward the commercialization of our advanced nuclear technologies,” said Oklo co-founder and CEO Jacob DeWitte. “His experience at the Fast Flux Test Facility provides a direct link to the technology legacy that our reactor design builds on, and we’re thrilled to have him at Oklo, helping to deploy modern fast reactor technologies.”

Before joining Oklo, Schweiger held leadership roles across the advanced fission and fusion industries. Most recently, at Hedron Engineering and Consulting, he led teams working on a high-capacity thermal battery initiative at the Massachusetts Institute of Technology and supported projects in the small modular reactor space.

“Those of us who have built and operated sodium-cooled fast reactors like the Fast Flux Test Facility can’t imagine why anyone would want to build a different type—they are inherently safe and operate efficiently,” said Pat Schweiger, Oklo CTO. “Working on a reactor that was designed and operated with that level of excellence remains a highlight of my career, and I’m excited to help bring that success forward again at Oklo.”

Previously, Schweiger served as Chief Engineer at the fusion startup Commonwealth Fusion Systems, where he built the engineering organization from the ground up, managed a team of more than 400 people, and helped the company raise over $2 billion in private funding.

From 2010 to 2018, he served as Senior Vice President of Engineering and overall Design Authority at advanced reactor developer TerraPower. In that role, he established a mature engineering organization, collaborated with international partners, and led complex, cross-functional design integration efforts critical to plant and reactor development.

Schweiger holds a Master’s Certificate in project management and is a licensed Professional Engineer. He holds multiple patents in nuclear technology in the United States and China and has authored numerous publications on reactor development.

About Oklo Inc.: Oklo Inc. is developing fast fission power plants to deliver clean, reliable, and affordable energy at scale; establishing a domestic supply chain for critical radioisotopes; and advancing nuclear fuel recycling to convert nuclear waste into clean energy. Oklo was the first to receive a site use permit from the U.S. Department of Energy for a commercial advanced fission plant, was awarded fuel material from Idaho National Laboratory, and submitted the first custom combined license application for an advanced reactor to the U.S. Nuclear Regulatory Commission. Oklo is also developing advanced fuel recycling technologies in collaboration with the U.S. Department of Energy and U.S. National Laboratories.

Forward-Looking Statements

This press release includes statements that express Oklo’s opinions, expectations, objectives, beliefs, plans, intentions, strategies, assumptions, forecasts or projections regarding future events or future results and therefore are, or may be deemed to be, “forward-looking statements.” The words “anticipate,” “believe,” “continue,” “can,” “could,” “estimate,” “expect,” “intends,” “may,” “might,” “plan,” “possible,” “potential,” “predict,” “project,” “should,” “would” or, in each case, their negative or other variations or comparable terminology, and similar expressions may identify forward-looking statements, but the absence of these words does not mean that a statement is not forward-looking. These forward-looking statements include all matters that are not historical facts. They appear in a number of places throughout this press release and include statements regarding our intentions, beliefs or current expectations concerning, among other things, the benefits of the proposed acquisition, results of operations, financial condition, liquidity, prospects, growth, strategies and the markets in which Oklo operates. Such forward-looking statements are based on information available as of the date of this press release, and current expectations, forecasts and assumptions, and involve a number of judgments, risks and uncertainties.

As a result of a number of known and unknown risks and uncertainties, the actual results or performance of Oklo may be materially different from those expressed or implied by these forward-looking statements. The following important risk factors could affect Oklo’s future results and cause those results or other outcomes to differ materially from those expressed or implied in the forward-looking statements: risks related to the development and deployment of Oklo’s powerhouses; the risk that Oklo is pursuing an emerging market, with no commercial project operating, regulatory uncertainties; risks related to acquisitions, divestitures, or joint ventures we may engage in; the potential need for financing to construct plants; market, financial, political and legal conditions; the effects of competition; risks related to accessing HALEU and recycled fuels; risks related to our supply chain; risks related to power purchase agreements; risks related to human capital; risks related to our intellectual property; risks related to cybersecurity and data privacy; changes in applicable laws or regulations; the outcome of any government and regulatory proceedings and investigations and inquiries; the risk that the acquisition of Atomic Alchemy fails to produce the expected benefits; and those factors in the other documents filed by Oklo from time to time with the U.S. Securities and Exchange Commission.

The foregoing list of factors is not exhaustive. You should carefully consider the foregoing factors and the other risks and uncertainties of the other documents filed by Oklo from time to time with the U.S. Securities and Exchange Commission. The forward-looking statements contained in this press release and in any document incorporated by reference are based on current expectations and beliefs concerning future developments and their potential effects on Oklo. There can be no assurance that future developments affecting Oklo will be those that Oklo has anticipated. Oklo undertakes no obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise, except as may be required under applicable securities laws.

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