On September 11, 2026, Oklo Inc. (the "Company") entered into an equity distribution agreement (the "Sales Agreement") with Goldman Sachs & Co. LLC, BofA Securities, Inc., Citigroup Global Markets Inc., J.P. Morgan Securities LLC, Morgan Stanley & Co. LLC, Barclays Capital Inc., Cantor Fitzgerald & Co., Guggenheim Securities, LLC, Canaccord Genuity LLC and B. Riley Securities, Inc. under which the Company may offer and sell, from time to time in its sole discretion, shares of the Company’s Class A common stock, par value $0.0001 per share (the "Common Stock"), with aggregate gross sales proceeds of up to $1,000,000,000 through an "at the market" equity offering program under which Goldman Sachs & Co. LLC, BofA Securities, Inc., Citigroup Global Markets Inc., J.P. Morgan Securities LLC, Morgan Stanley & Co. LLC, Barclays Capital Inc., Cantor Fitzgerald & Co., Guggenheim Securities, LLC, Canaccord Genuity LLC and B. Riley Securities, Inc. will act as the agents (each, a "Sales Agent" and collectively, the "Sales Agents").

Sales, if any, of Common Stock under the Sales Agreement may be made in ordinary brokers’ transactions, to or through a market maker, on or through the New York Stock Exchange or any other market venue where the securities may be traded, in the over-the-counter market, in privately negotiated transactions, in block trades, in transactions that are deemed to be "at the market offerings" as defined in Rule 415(a)(4) under the Securities Act or through a combination of any such methods of sale. The Sales Agents may also sell Common Stock by any other method permitted by law.

The securities may be sold at market prices prevailing at the time of sale, at prices related to such prevailing market prices or at negotiated prices. The Company will designate the maximum amount of Common Stock to be sold through the Sales Agents on a daily basis or otherwise as the Company and the Sales Agents agree and the minimum price per share at which such Common Stock may be sold. Subject to the terms and conditions of the Sales Agreement, the Sales Agents will use their reasonable efforts consistent with their normal sales and trading practices to sell on the Company’s behalf all of the designated shares of Common Stock. The Company may instruct the Sales Agents not to sell any Common Stock if the sales cannot be effected at or above the price designated by the Company in any such instruction. The Company or any of the Sales Agents may suspend the offering of Common Stock by notifying the other party.

The Sales Agreement provides that the Company will pay the Sales Agents a commission of up to 1.5% of the gross sales price per share of Common Stock sold through such Sales Agents under the Sales Agreement, and the Company will reimburse the Sales Agents for certain expenses incurred in connection with their services under the Sales Agreement. The offering of Common Stock pursuant to the Sales Agreement will terminate upon the termination of the Sales Agreement by the Company or by the Sales Agents, as provided therein.