X0508 4 2025-12-01 0001088856 CORCEPT THERAPEUTICS INC CORT 0001529655 Robb Gary Charles C/O CORCEPT THERAPEUTICS INCORPORATED 101 REDWOOD SHORES PARKWAY REDWOOD CITY CA 94065 false true false false Chief Business Officer false Common Stock 2025-12-01 4 A false 224 79.78 A 13834 D Common Stock 2025-12-01 4 A false 224 0 A 14058 D Common Stock 2025-12-02 4 F false 148 79.78 D 13910 D Common Stock 11571 I Custodial Account for Child Common Stock 11571 I Custodial Account for Child The Reporting Person purchased shares ("Purchase Plan Shares") of the Issuer's common stock pursuant to a purchase plan ("Purchase Plan") established under the Corcept Therapeutics Incorporated 2024 Incentive Award Plan on December 1, 2025. In accordance with the Purchase Plan, the price was established based on the closing price on the day of the purchase. Includes 292 shares underlying unvested restricted stock awards granted to the Reporting Person by the Issuer on March 3, 2025, 997 shares underlying unvested restricted stock awards granted to the Reporting Person by the Issuer on June 2, 2025 and 251 shares underlying unvested restricted stock awards granted to the Reporting Person by the Issuer on September 2, 2025. 100% of the shares underlying the restricted stock awards will vest on the one-year anniversary of the grant date provided the Reporting Person satisfies certain requirements. Shares underlie unvested restricted stock awards granted to the Reporting Person by the Issuer under the Purchase Plan. 100% of the shares underlying the restricted stock awards will vest on the one-year anniversary of the grant date provided the Reporting Person remains the beneficial owner of the Purchase Plan Shares through such one-year anniversary. These shares were withheld by the Issuer in order to satisfy certain tax withholding obligations in connection with the issuance of shares upon the vesting of restricted stock units. The closing price on December 1, 2025 was used to calculate the withholding obligation. These shares are held by a child of the Reporting Person through a custodial account under the Uniform Transfers to Minors Act for which the Reporting Person is custodian. These shares are held by a child of the Reporting Person through a custodial account under the Uniform Transfers to Minors Act for which the Reporting Person is custodian. The power of attorney under which this form was signed is on file with the Commission. /s/ Joseph Douglas Lyon, as attorney-in-fact for Gary Charles Robb. 2025-12-03