OKLO Form 4 Filings

Oklo Inc. director and Co-Founder/COO Caroline Cochran reported open-market sales of Oklo Class A common stock totaling 200,000 shares. The transactions were executed on June 1, 2026 through a combination of direct holdings and indirect entities, including GRATs and her spouse’s holdings.

The sales occurred at weighted average prices ranging from about $64.99 to $70.45 per share, according to individual line items and related footnotes. A footnote states that these sales were effected under a Rule 10b5-1 trading plan adopted on March 31, 2025, indicating they were pre-arranged rather than discretionary trades.

Oklo Inc. Chief Legal & Strategy Officer William Carroll Murphy reported routine equity compensation activity. On May 19, 20,686 restricted stock units vested, converting into the same number of Class A common shares. Footnotes state each RSU represents a contingent right to one Class A share.

On May 20, 10,548 of these shares were sold at $58.04 per share solely to cover tax withholding obligations through a “sell to cover” transaction, described as non-discretionary. After these transactions, Murphy directly holds 36,175 Class A shares and 146,072 RSUs, with the RSUs part of a 248,227-unit grant awarded on August 12, 2024.

Oklo Inc. Chief Financial Officer Richard Craig Bealmear reported option exercises paired with an open-market sale of common stock. On May 1, 2026, he exercised options to acquire 16,216 shares of Class A Common Stock at $3.18 per share and sold the same 16,216 shares at a weighted average price of $69.92 per share, in transactions executed under a Rule 10b5-1 trading plan. After these trades, he held 391,762 shares of Class A Common Stock directly. On May 4, 2026, he exercised options to acquire an additional 5,880 shares at $3.18 per share, increasing his direct holdings to 397,642 shares. Following the May 4 option exercise, he retained 802,403 stock options exercisable for Class A Common Stock, with an expiration date of December 22, 2033, under an award that began vesting in 2024.

Oklo Inc. director and Co-Founder/CEO Jacob DeWitte filed a Form 4 reporting net open-market sales of 200,000 shares of Class A Common Stock on May 1, 2026. The transactions were executed by entities associated with DeWitte, including GRATs, family trusts, and his spouse.

The sales were made under a pre-arranged Rule 10b5-1 trading plan adopted on March 31, 2025. Reported weighted average sale prices ranged roughly from about $68.50 to $71.38 per share across multiple trades, with each line item showing updated direct or indirect share balances following the respective transactions.

Oklo Inc. director and Co-Founder/COO Caroline Cochran reported net open-market sales of 200,000 shares of Class A Common Stock on May 1, 2026. The filing groups six sale transactions, some through a Jacob DeWitte GRAT and others through her spouse, at prices around the low-$70s per share.

Following these trades, a direct holding reported for her spouse stands at 598,039 shares, with additional indirect holdings shown in various family trusts and GRATs. All reported sales were executed under a pre-arranged Rule 10b5-1 trading plan adopted on March 31, 2025, indicating the transactions were scheduled in advance.

CHRISTIAN DAVID A reported acquisition or exercise transactions in this Form 4 filing.

Oklo Inc. director David A. Christian received a grant of 4,699 restricted stock units (RSUs) on Class A Common Stock as equity compensation. The RSUs were awarded at no cash cost per unit and each RSU represents the right to receive one share of Class A Common Stock.

The 4,699 RSUs vest in full on April 10, 2027, meaning the director must remain eligible through that date to receive the underlying shares. Following this grant, his reported RSU holdings from this award total 4,699 units held directly.

Peters Mark T reported acquisition or exercise transactions in this Form 4 filing.

Oklo Inc. director Mark T. Peters received a grant of 4,699 restricted stock units, each representing a contingent right to one share of Class A Common Stock. These units vest in full on April 10, 2027. Following the transactions, he also reports 100 Class A shares held indirectly through The Peters Family Trust.

Kan Derek T. reported acquisition or exercise transactions in this Form 4 filing.

Oklo Inc. director Derek T. Kan reported a grant of 4,699 restricted stock units (RSUs). The RSUs were awarded on April 10, 2026 and each RSU represents a right to receive one share of Oklo’s Class A Common Stock. Following this award, Kan holds 4,699 RSUs directly. The RSUs vest in full on April 10, 2027, meaning shares will be delivered only if the vesting condition is met.

Oklo Inc. director David G. Park received a grant of 4,699 restricted stock units as equity compensation. Each unit represents a contingent right to receive one share of Oklo Class A common stock.

The restricted stock units vest in full on April 10, 2027, and Park now holds 4,699 units directly following this award. This is a non-cash, compensation-related acquisition rather than a market purchase or sale of shares.

Oklo Inc. Chief Financial Officer Richard Craig Bealmear reported an exercise-and-sell sequence involving company stock. He exercised stock options covering 22,096 shares of Class A common stock at an exercise price of $3.18 per share on April 1 and 2, 2026. On April 1, he then sold 16,342 shares of Class A common stock at an average price of $51.08 per share, with the sale carried out under a pre-arranged Rule 10b5-1 trading plan adopted on September 22, 2025. After these transactions, he directly owned 386,008 shares of Class A common stock and held 824,499 stock options following the reported option exercises.

Oklo Inc. director and Co-Founder/CEO Jacob DeWitte reported open-market sales totaling 200,000 shares of Class A Common Stock on April 1, 2026. The transactions were executed at weighted average prices reported in blocks around $48–$51 per share, with detailed price ranges provided in the notes.

Part of the sales came from shares held directly, leaving DeWitte with 691,533 Class A shares in direct ownership, and part came from indirect holdings, including a Jacob DeWitte GRAT and securities beneficially owned by his spouse and related GRATs. A footnote states that these sales were made under a Rule 10b5-1 plan adopted on March 31, 2025, indicating they were pre-arranged rather than discretionary trades.

Oklo Inc. director and Co-Founder/COO Caroline Cochran reported net open-market sales of 200,000 shares of Class A Common Stock on April 1, 2026. The trades were executed in multiple transactions at weighted average prices ranging from about $47.99 to $51.79 per share under a Rule 10b5-1 trading plan adopted on March 31, 2025.

After these sales, Cochran directly holds 658,039 Class A shares. Additional shares are held indirectly through vehicles such as the Caroline Cochran GRAT, which holds 689,479 shares, and family-related trusts and GRATs associated with Cochran and her spouse, including 7,583,085 shares held by the Caroline DeWitte Family Trust.

Oklo Inc. director and CEO Jacob DeWitte reported internal transfers of Class A common stock among family-related entities. On March 30, 2026, 506,807 shares were distributed from the Jacob DeWitte GRAT to the Jacob DeWitte Family Trust and 474,011 shares from the Caroline Cochran GRAT to the Caroline DeWitte Family Trust as annuity distributions.

On March 31, 2026, those same 506,807 shares and 474,011 shares were contributed to new vehicles, the Jacob DeWitte GRAT No. 3 and Caroline DeWitte GRAT No. 3, respectively. All transactions were coded as "J" (other acquisition or disposition) at a reported price of $0.00 per share, indicating administrative movements rather than open-market buying or selling.

Oklo Inc. Co-Founder and COO Caroline Cochran, a greater-than-10% owner, reported internal movements of Oklo Class A Common Stock among family trusts and grantor retained annuity trusts. On March 30, 2026, 474,011 shares were distributed to the Caroline DeWitte Family Trust from the Caroline Cochran GRAT, and 506,807 shares were distributed to the Jacob DeWitte Family Trust from the Jacob DeWitte GRAT. On March 31, 2026, those same share amounts were contributed to Caroline DeWitte GRAT No. 3 and Jacob DeWitte GRAT No. 3, respectively, all at a reported price of $0.00 per share. The filing also lists post-transaction holdings, including 718,039 shares held directly by Cochran and additional indirect holdings through several GRATs and family trusts.

Oklo Inc. director Richard Kinzley, through the Richard W. and Cynthia M. Kinzley Revocable Trust, reported an open-market sale and a gift of Oklo Class A Common Stock. The trust sold 4,000 shares at an average price of $52.09 per share and made a bona fide gift of 900 shares. After these transactions, the trust holds 15,754 shares indirectly. A footnote also corrects a prior Form 4, reclassifying 3,800 shares from direct to indirect ownership by the trust, noting this is only a change in the form of beneficial ownership with no change in Kinzley’s pecuniary interest.

Oklo Inc. director John M. Jansen reported an open-market sale of 10,500 shares of Class A Common Stock at $51.52 per share. The transaction took place on March 27, 2026 and was a direct ownership sale. Following this trade, Jansen directly holds 12,354 Oklo shares.

Oklo Inc. Chief Technology Officer Patrick Joseph Schweiger reported compensation-related equity activity. On March 24, 2026, 12,882 restricted stock units (RSUs) vested, each converting into one share of Class A Common Stock at a conversion price of $0.00 per share. Following this vesting, he held 59,034 RSUs. On the same date, 12,882 shares of Class A Common Stock were acquired from the RSU settlement, bringing his direct common stock holdings to 24,991 shares. On March 25, 2026, he sold 5,561 shares of Class A Common Stock at an average price of $56.48 per share to cover tax withholding obligations associated with the RSU vesting, a non-discretionary “sell to cover” transaction. After these transactions, he directly owned 19,430 shares of Class A Common Stock.

Oklo Inc.'s Chief Legal & Strategy Officer William Carroll Murphy reported routine equity compensation activity. On March 24, 2026, 20,685 restricted stock units (RSUs) vested, each converting into one share of Class A Common Stock. This increased his directly held common shares and reduced his RSU balance.

In connection with this vesting, on March 25, 2026 he sold 10,639 Class A shares at $56.48 per share solely to cover tax withholding obligations in a "sell to cover" transaction, which the company notes was not a discretionary trade. Following these transactions, he holds 26,037 Class A Common shares directly and 166,758 RSUs.

Oklo Inc. Co-Founder and CEO Jacob DeWitte reported a series of equity compensation events and related tax sales. On March 12, 2026, restricted stock units representing 112,360 and 23,937 shares of Class A common stock were released to him, while his spouse received releases of 78,652 and 5,191 RSUs. These RSUs vest in substantially equal installments under previously granted awards.

On March 13, 2026, DeWitte sold 72,960 shares at $60.00 per share and his spouse sold 44,828 shares at the same price, with footnotes stating both sales were “sell to cover” transactions to satisfy tax withholding obligations and were not discretionary trades. Following these transactions, DeWitte holds 751,533 shares directly, and his spouse holds 718,039 shares indirectly for his benefit, in addition to significant indirect holdings through GRATs and family trusts.

Oklo Inc. co-founder and COO Caroline Cochran reported RSU vesting and related tax-cover share sales. On March 12, 2026, 78,652 restricted stock units were released to Cochran and 112,360 to Jacob DeWitte, each RSU representing one share of Class A Common Stock.

Additional RSUs of 5,191 for Cochran and 23,937 for DeWitte also released, with these awards vesting in installments beginning on August 9, 2024, and a separate 15,574-RSU grant to Cochran vesting over three annual installments starting December 31, 2025.

On March 13, 2026, 44,828 shares held by Cochran and 72,960 shares held by her spouse were sold at $60.00 per share solely to cover tax withholding obligations via “sell to cover” transactions, which the company states were not discretionary. Cochran continues to hold 718,039 shares directly, and additional shares are held indirectly through her spouse and various family trusts and GRATs.

Oklo Inc.'s Chief Financial Officer Richard Craig Bealmear reported compensation-related equity activity and a tax-driven share sale. On March 12, 2026, he acquired a total of 163,843 shares of Class A Common Stock through the vesting and settlement of restricted stock units, each RSU representing one share.

On March 13, 2026, he sold 72,090 shares at $60.00 per share. A footnote explains this sale was executed to cover tax withholding obligations via a “sell to cover” transaction and was not a discretionary trade. Following these transactions, he directly holds 386,008 shares of Oklo Class A Common Stock.

Oklo Inc. director Richard Kinzley reported an internal share transfer involving 33,708 shares of Class A Common Stock. On March 10, 2026, 16,854 shares moved from his personal brokerage account to the Richard W. and Cynthia M. Kinzley Revocable Trust, with no change in his economic interest. Following the transactions, 16,854 shares are held indirectly through the family trust and 3,800 shares are held directly.

Oklo Inc. Chief Technology Officer Patrick Joseph Schweiger reported routine equity compensation activity. On March 6, 2026, 2,884 restricted stock units were released and converted into 2,884 shares of Class A Common Stock at an exercise price of $0.00 per share. Of these, 1,280 shares were withheld at $58.26 per share to satisfy tax obligations, leaving 12,109 Class A shares held directly after the disposition. Following the RSU release, he held 44,416 restricted stock units. The filing also notes a prior grant on December 22, 2025 of 27,500 RSUs, which vest over three years in substantially equal annual installments.

Oklo Inc.'s Chief Legal & Strategy Officer, William Carroll Murphy, reported routine equity compensation activity. On March 6, 2026, 5,191 restricted stock units vested, converting into the same number of Class A shares at a stated price of $0.00 per share. A footnote explains that on March 9, 2026, 2,820 Class A shares were sold at $56.69 per share solely to cover tax withholding obligations in a "sell to cover" transaction, described as not a discretionary transaction. Following this sale, Murphy directly held 15,991 Class A shares. Earlier, on December 22, 2025, he was granted 27,500 RSUs with multi-year vesting, contributing to a total of 187,443 RSUs reported as outstanding after that grant.

Oklo Inc. director Richard Kinzley reported the full exercise and conversion of 16,854 restricted stock units into 16,854 shares of Class A common stock on March 6, 2026. The units, each representing one share, had fully vested on May 9, 2025. After this transaction, Kinzley directly holds 20,654 Class A shares.

Oklo Inc. director John M. Jansen exercised equity awards to receive additional common shares. On March 6, 2026, he converted 16,854 restricted stock units, each representing one share of Class A common stock, into 16,854 shares. After this transaction, he directly held 22,854 Class A shares.

Oklo Inc. Chief Financial Officer Richard Craig Bealmear reported option exercises and related share sales. On March 3, 2026 he exercised stock options for 5,839 shares of Class A Common Stock at a price of $3.18 per share, following the exercise of 5,839 stock options with a stated price of $0.00 per option. After these transactions, he held 846,595 stock options and 300,094 shares of Class A Common Stock before a same-day sale.

On the same date, he sold 5,839 shares of Class A Common Stock in an open-market transaction at $61.93 per share, leaving 294,255 Class A Common shares held directly. The sales were effected under a Rule 10b5-1 plan adopted on September 22, 2025, and the relevant stock option began vesting 20% of the underlying shares on August 1, 2024, with the remainder vesting in 48 substantially equal monthly installments.

Oklo Inc. director and CEO Jacob DeWitte reported open-market sales of 200,000 shares of Class A Common Stock on March 2, 2026, under a Rule 10b5-1 trading plan adopted on March 31, 2025.

The transactions included both direct sales and indirect sales through a GRAT and securities held or beneficially owned by his spouse and related trusts. After these trades, he continued to hold 688,196 shares directly, with additional indirect holdings reported through various family entities.

Oklo Inc. director and Co-Founder, COO Caroline Cochran reported open-market sales of 200,000 shares of Class A Common Stock. The transactions on March 2, 2026 were executed at weighted average prices ranging from about $60 to $64 per share under a Rule 10b5-1 trading plan adopted on March 31, 2025.

Part of the stock was sold from shares held directly in her name, while additional shares were sold from accounts held by GRATs associated with her and with co-founder Jacob DeWitte, as well as from securities held or beneficially owned by her spouse.

Oklo Inc. Chief Financial Officer Richard Craig Bealmear exercised stock options and sold shares. On 2026-03-02, he exercised 16257.0000 stock options, receiving 16257.0000 shares of Class A Common Stock at 3.1800 per share, then sold 16257.0000 shares at 60.0000 per share in an open-market transaction under a Rule 10b5-1 plan adopted on September 22, 2025. Following these transactions, he held 294255.0000 Class A shares and 852434.0000 options, and the option’s expiration date is clarified as December 22, 2033.

Oklo Inc.’s Chief Financial Officer Richard Craig Bealmear reported multiple equity transactions in early February 2026. On February 2 and 3, he exercised stock options for 9,726 and 97,342 shares of Class A common stock at an exercise price of $3.18 per share. On February 2, he sold 9,726 Class A shares at a weighted average price of $76.9295 per share under a Rule 10b5-1 trading plan adopted on September 22, 2025. Following these transactions, he directly held 196,913 Class A common shares and 868,691 stock options, which began vesting on August 1, 2024 and continue to vest in monthly installments.

Oklo Inc. director, CEO, and 10% owner Jacob DeWitte reported multiple insider sales of Class A common stock on February 2, 2026. The Form 4 shows direct sales, including 16,181 shares at $73.8095 and 43,819 shares at $74.6863, plus additional sales through a grantor retained annuity trust in his name.

The filing also lists large indirect holdings in family trusts and GRATs associated with DeWitte and his spouse Caroline Cochran, some of which executed similar same‑day sales. All sales were made under a pre‑established Rule 10b5-1 trading plan adopted on March 31, 2025.

Oklo Inc. director, co-founder and COO Caroline Cochran reported multiple planned insider stock sales in Oklo Class A common shares. The transactions on February 2, 2026 were executed under a Rule 10b5-1 trading plan adopted on March 31, 2025.

Cochran reported direct sales of 16,181 shares at a weighted average price of $73.8095 and 43,819 shares at $74.6863. Additional sales were reported from entities associated with her and her spouse, including GRATs and family trusts, while substantial indirect holdings remain reported after the transactions.

Oklo Inc. director, Co-Founder and COO Caroline Cochran, a 10% owner, reported multiple insider sales of Class A Common Stock. On January 9, 2026, she sold 26,741 shares at a weighted average price of $111.38 per share, leaving 799,023 shares held directly. Related entities, including a Caroline Cochran GRAT, sold 12,977 shares at a weighted average of $112.32 and 6,096 shares at $112.83.

The filing also lists significant indirect holdings through family trusts and GRATs associated with Cochran’s spouse, including 7,583,085 shares held by the Caroline DeWitte Family Trust and 7,851,901 shares held by the Jacob DeWitte Family Trust as of January 9, 2026. All reported sales were effected under a Rule 10b5-1 trading plan adopted on March 31, 2025, indicating these transactions were pre-arranged rather than discretionary trades.

Oklo Inc. CEO, Co‑Founder and director Jacob DeWitte, a 10% owner, reported multiple open‑market sales of Class A common stock on January 9, 2026 under a pre‑arranged Rule 10b5‑1 trading plan adopted on March 31, 2025.

The transactions included 26,740 shares sold directly at a weighted average price of $111.38, plus 12,977 shares and 6,097 shares sold at weighted average prices of $112.32 and $112.83, respectively, through a Jacob DeWitte GRAT. Additional same‑day sales of 26,741, 12,977 and 6,096 shares at the same respective weighted average prices were reported as indirect holdings through DeWitte’s spouse and related GRATs.

Following these trades, DeWitte reports beneficial ownership of 808,197 shares held directly, along with large indirect positions through a GRAT, family trusts and additional GRAT structures for himself and his spouse.

Oklo Inc. director and Co-Founder/COO Caroline Cochran reported multiple sales of Class A common stock on January 7 and 8, 2026, made under a pre-arranged Rule 10b5-1 trading plan adopted on March 31, 2025. The Form 4 shows a series of open-market sales at weighted average prices ranging from about $93.79 to about $100.06 per share, including transactions such as 34,579 shares sold at a weighted average price of $97.9189 and 35,499 shares at $98.7542 in direct holdings.

After the reported trades, Cochran directly held 827,019 Oklo Class A shares, with additional indirect holdings through a GRAT that held 1,410,173 shares, and large blocks held through family trusts and GRATs associated with her spouse, Jacob DeWitte, including 7,583,085 shares in the Caroline DeWitte Family Trust and 7,851,901 shares in the Jacob DeWitte Family Trust.

Oklo Inc. insider Jacob DeWitte, the company’s Co‑Founder, CEO, director and 10% owner, reported multiple open‑market sales of Class A common stock on January 7–8, 2026. The filing states these transactions were made under a Rule 10b5‑1 trading plan adopted on March 31, 2025, meaning they were pre‑scheduled rather than discretionary at the time of sale.

The reported sales include both direct holdings and indirect holdings through entities such as the Jacob DeWitte GRAT, with weighted‑average prices ranging from about $93.7874 to $100.0177 per share. The form also shows sizeable indirect positions held via the Jacob DeWitte Family Trust, Jacob DeWitte GRAT No. 2, and entities associated with DeWitte’s spouse, including the Caroline Cochran and Caroline Cochran GRAT accounts and related family trusts, which remain beneficially owned after these transactions.

Oklo Inc. disclosed that a director, 10% owner and Co-Founder, COO reported selling 100,000 shares of Class A common stock on 01/05/2026. The shares were sold at a weighted average price of $90.291 per share, with individual trades occurring between $90.00 and $90.75. These sales were effected under a Rule 10b5-1 trading plan adopted on March 31, 2025, which allows pre-arranged trading of shares. Following the transaction, the reporting person continues to hold substantial direct and indirect positions, including 919,023 shares held directly and additional Class A common stock held through various family trusts and GRATs for the reporting person and spouse.

Oklo Inc. CEO and co-founder Jacob DeWitte reported insider share sales. On 01/05/2026, he sold 100,000 shares of Oklo Class A common stock in a transaction coded "S" (sale) at a weighted average price of $90.291 per share, executed under a Rule 10b5-1 trading plan adopted on March 31, 2025. The filing notes the shares were sold in multiple trades between $90.00 and $90.75.

After the reported transactions, DeWitte continues to hold Oklo equity both directly and through various trusts and grantor retained annuity trusts, including 928,197 shares held directly. He is identified as a director, 10% owner, and officer (Co-Founder, CEO), underscoring a significant ongoing ownership stake even after these planned sales.

Oklo Inc. insider trust transfers without changing ownership

An Oklo Inc. director, co-founder and COO who is also a 10% owner reported several internal transfers of Class A common stock on December 24, 2025. The reporting person transferred 7,583,085 shares to the Caroline DeWitte Family Trust for no consideration and remains the beneficial owner as trustee, with family members and certain charities as beneficiaries. Additional blocks of 1,000,000 and other shares previously held directly were contributed to grantor retained annuity trusts (GRATs) as part of estate planning, while still being reported as beneficially owned.

The reporting person’s spouse also transferred 7,851,901 shares to the Jacob DeWitte Family Trust for no consideration and contributed 1,000,000 shares to a GRAT, with beneficial ownership retained. Overall, these movements shift shares into family and GRAT structures but keep effective control with the same insiders.

Oklo Inc. insider Jacob DeWitte, a director, co‑founder, CEO and 10% owner, reported significant internal transfers of Class A common stock tied to estate and family planning structures on December 24, 2025. The filing notes that DeWitte transferred 7,851,901 shares to the Jacob DeWitte Family Trust for no consideration and remains the beneficial owner as trustee, with his family and certain charities as beneficiaries. An additional 1,000,000 shares previously held directly were contributed to a grantor retained annuity trust.

The report also describes related holdings attributable to his spouse. On the same date, DeWitte’s spouse transferred 7,583,085 shares to the Caroline DeWitte Family Trust for no consideration and remains the beneficial owner, and 1,000,000 shares were contributed to a separate grantor retained annuity trust. Overall, these changes reorganize ownership among trusts and family vehicles rather than reflecting open‑market buying or selling.

Oklo Inc. insider trading report: A co-founder, chief operating officer, director and 10% owner of Oklo Inc. filed a Form 4 disclosing multiple sales of Class A common stock on 12/22/2025. The filing shows large existing holdings of 9,502,108 shares held directly and 9,780,098 shares held indirectly through the reporting person's spouse.

The reported sales were made by grantor retained annuity trusts (GRATs) and are coded as open-market or private sales. Individual transactions include blocks such as 30,634 shares at a weighted average price of $80.8378, and larger blocks like 191,284 shares at $82.6108, with additional tranches at higher weighted average prices up to about $85.7025. According to the notes, all of these sales were effected under a pre-arranged Rule 10b5-1 trading plan adopted on March 31, 2025, and the insider has committed to provide full breakdowns of the prices within each disclosed range upon request.

Oklo Inc. insider Jacob DeWitte, the co-founder, CEO, director and 10% owner, reported multiple sales of Class A common stock on 12/22/2025. The transactions were executed by grantor retained annuity trusts (GRATs) for DeWitte and his spouse under a Rule 10b5-1 trading plan adopted on 03/31/2025, indicating they were pre-scheduled.

The GRATs sold blocks of shares at weighted average prices of $80.8378, $81.672, $82.6108, $83.558, $84.5529 and $85.7025, with each block representing separate transactions within stated price ranges. After these sales, the filing shows DeWitte holding 9,780,098 Class A shares directly and additional indirect holdings, including 9,502,108 shares through his spouse and over 1.5 million shares in each of the GRATs.

Oklo Inc.'s Chief Financial Officer reported several equity transactions in company stock. On December 17, 2025, the CFO exercised stock options to acquire 150,000 shares of Class A common stock at an exercise price of $3.18 per share. That same day, the CFO sold 69,841 shares at a price of $78.4 per share, followed by an additional sale of 5,159 shares on December 18, 2025 at $76.97 per share.

After these transactions, the CFO beneficially owned 196,913 shares of Class A common stock directly. The report also shows 975,759 stock options remaining beneficially owned, with the referenced option grant vesting 20% of the underlying shares on August 1, 2024 and the rest in 48 substantially equal monthly installments until expiration on August 1, 2033.

Oklo Inc. reported insider equity activity by its Chief Legal & Strategy Officer. On November 28, 2025, a total of 10,734 restricted stock units (RSUs) vested, each converting into one share of Class A common stock. These RSUs came from prior grants of 10,000 units and 2,202 units with multi-year vesting schedules.

Following the vesting, the officer sold 5,864 shares of Class A common stock on December 1, 2025 at a price of $88.4239 per share to cover tax withholding obligations through a “sell to cover” transaction, described as non-discretionary. After these transactions, the officer directly owned 13,620 shares of Class A common stock and 1,468 RSUs remained outstanding.

Oklo Inc. (OKLO) reported insider equity activity by its Chief Legal & Strategy Officer. On November 18, 2025, the officer acquired 20,686 shares of Class A Common Stock through the vesting and settlement of restricted stock units (RSUs). On November 19, 2025, 11,936 shares were sold at $101.838 per share to cover tax withholding obligations under a "sell to cover" arrangement, described as a non-discretionary transaction.

Following these transactions, the officer directly owned 8,750 shares of Class A Common Stock and 144,798 RSUs remained outstanding as derivative securities. The RSUs relate to a prior grant of 248,227 RSUs made on August 6, 2025, which vests as to one-third of the underlying shares on August 12, 2025 and then in eight substantially equal quarterly installments.