Caroline Cochran - 12 Mar 2026 Form 4 Insider Report for Oklo Inc. (OKLO)

Role
Co-Founder, COO, Director, 10%+ Owner
Signature
/s/ Richard Craig Bealmear, Attorney-in-Fact
Issuer symbol
OKLO
Transactions as of
12 Mar 2026
Net transactions value
-$7,067,280
Form type
4
Filing time
16 Mar 2026, 18:15:38 UTC
Previous filing
04 Mar 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Cochran Caroline Co-Founder, COO, Director, 10%+ Owner C/O OKLO INC., 3190 CORONADO DR., SANTA CLARA /s/ Richard Craig Bealmear, Attorney-in-Fact 16 Mar 2026 0002021786

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction OKLO Class A Common Stock Options Exercise +78,652 +12% $59.59* 757,676 12 Mar 2026 Direct F1
transaction OKLO Class A Common Stock Options Exercise +5,191 +0.69% $59.59* 762,867 12 Mar 2026 Direct F1
transaction OKLO Class A Common Stock Sale $2,689,680 -44,828 -5.9% $60.00 718,039 13 Mar 2026 Direct F1, F2
transaction OKLO Class A Common Stock Options Exercise +112,360 +16% $59.59* 800,556 12 Mar 2026 By Jacob DeWitte F3
transaction OKLO Class A Common Stock Options Exercise +23,937 +3% $59.59* 824,493 12 Mar 2026 By Jacob DeWitte F3
transaction OKLO Class A Common Stock Sale $4,377,600 -72,960 -8.8% $60.00 751,533 13 Mar 2026 By Jacob DeWitte F3, F4
holding OKLO Class A Common Stock 1,310,000 12 Mar 2026 By Caroline Cochran GRAT F1
holding OKLO Class A Common Stock 1,000,000 12 Mar 2026 By Caroline DeWitte GRAT No. 2 F1
holding OKLO Class A Common Stock 7,583,085 12 Mar 2026 By the Caroline DeWitte Family Trust F1
holding OKLO Class A Common Stock 1,310,000 12 Mar 2026 By Jacob DeWitte GRAT F5
holding OKLO Class A Common Stock 1,000,000 12 Mar 2026 By Jacob DeWitte GRAT No. 2 F5
holding OKLO Class A Common Stock 7,851,901 12 Mar 2026 By the Jacob DeWitte Family Trust F5

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction OKLO Restricted Stock Units Options Exercise -78,652 -40% $0.000000* 117,977 12 Mar 2026 Class A Common Stock 78,652 Direct F6, F7
transaction OKLO Restricted Stock Units Options Exercise -5,191 -33% $0.000000* 10,383 12 Mar 2026 Class A Common Stock 5,191 Direct F8, F9
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 For more information about the equity of the Issuer held by the Reporting Person, please see the Issuer's most recent definitive proxy statement filed with the Securities and Exchange Commission.
F2 Represents the number of shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting and settlement of the RSUs listed in Table II. The sale was to satisfy tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary transaction by the Reporting Person.
F3 Represents securities held by the Reporting Person's spouse.
F4 Represents the number of shares sold by the Reporting Person's spouse to cover tax withholding obligations in connection with the vesting and settlement of the RSUs listed in Table II. The sale was to satisfy tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary transaction by the Reporting Person's spouse.
F5 Represents securities beneficially owned by the Reporting Person's spouse.
F6 Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock. On March 12, 2026, 112,360 and 78,652 restricted stock units were released to Mr. DeWitte and Ms. Cochran, respectively.
F7 The RSUs vest in 12 substantially equal quarterly installments beginning on August 9, 2024.
F8 Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock. On March 12, 2026, 23,937 and 5,191 RSUs were released to Mr. DeWitte and Ms. Cochran, respectively.
F9 On December 22, 2025, the Reporting Person was granted 15,574 RSUs, vesting in three substantially equal annual installments beginning on December 31, 2025.