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Corcept (CORT) officer Maduck exercises 75K options, sells 75K pre-planned shares

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
4

Rhea-AI Filing Summary

Corcept Therapeutics officer Sean Maduck reported an option exercise and related share sales. He exercised stock options for 75,000 shares of common stock at a $8.27 exercise price, then sold 20,425 shares at $66.1599 and 54,575 shares at $65.3711 in open-market transactions.

The filing notes these sales were made under a pre-arranged Rule 10b5-1 trading plan adopted on December 8, 2025. After the transactions, he held 29,402 shares directly, plus additional indirect holdings through trusts and LLCs associated with him, which include restricted stock awards that vest over time.

Positive

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Insider Maduck Sean
Role See Remarks
Sold 75,000 shs ($4.92M)
Type Security Shares Price Value
Exercise Stock option (right to buy) 75,000 $0.00 --
Exercise Common Stock 75,000 $8.27 $620K
Sale Common Stock 54,575 $65.3711 $3.57M
Sale Common Stock 20,425 $66.1599 $1.35M
holding Common Stock -- -- --
holding Common Stock -- -- --
holding Common Stock -- -- --
holding Common Stock -- -- --
holding Common Stock -- -- --
Holdings After Transaction: Stock option (right to buy) — 166,986 shares (Direct, null); Common Stock — 83,977 shares (Direct, null); Common Stock — 5,147 shares (Indirect, See Footnote)
Footnotes (1)
  1. Includes 888 shares underlying unvested restricted stock awards granted to the Reporting Person by the Issuer on June 2, 2025, 228 shares underlying unvested restricted stock awards granted to the Reporting Person by the Issuer on September 2, 2025, 205 shares underlying unvested restricted stock awards granted to the Reporting Person by the Issuer on December 1, 2025 and 454 shares underlying unvested restricted stock awards granted to the Reporting Person by the Issuer March 2, 2026. 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. This transaction was made pursuant to a 10b5-1 plan adopted by the Reporting Person on December 8, 2025 in effect at the time of this transaction. Represents the weighted average sale price for the entire number of shares sold. The actual sale prices range from $65.00 to $65.99 per share. Information on the exact number of shares sold at each sale price can be obtained from the Issuer upon request. Represents the weighted average sale price for the entire number of shares sold. The actual sale prices range from $66.00 to $66.50 per share. Information on the exact number of shares sold at each sale price can be obtained from the Issuer upon request. Represents the shares held by Sean and Molly Maduck Living Trust of which the Reporting Person is a co-trustee. Represents the shares held by MMM 2025, LLC of which the Reporting Person is a member and manager. Represents the shares held by SNM 2025 Grantor Retained Annuity Trust of which the Reporting Person is the trustee. Represents the shares held by SNM 2026 Grantor Retained Annuity Trust of which the Reporting Person is the trustee. Represents the shares held by Duckhill Capital, LLC of which the Reporting Person is President and disclaims beneficial ownership of the shares except to the extent of his pecuniary interest therein. Fully exercisable.
Shares sold at $66.1599 20,425 shares Open-market sale at weighted average price on May 27, 2026
Shares sold at $65.3711 54,575 shares Open-market sale at weighted average price on May 27, 2026
Options exercised 75,000 shares at $8.27 Stock option (right to buy) exercise on May 27, 2026
Direct holdings after trades 29,402 shares Common stock directly held following May 27, 2026 transactions
Indirect living trust holdings 10,000 shares Sean and Molly Maduck Living Trust indirect ownership entry
MMM 2025, LLC holdings 34,000 shares Indirect ownership through MMM 2025, LLC
Duckhill Capital, LLC holdings 5,147 shares Indirect holdings with pecuniary interest disclaimer
Option expiration February 10, 2027 Expiration date of exercised stock option grant
Rule 10b5-1 plan financial
"This transaction was made pursuant to a 10b5-1 plan adopted by the Reporting Person"
A Rule 10b5-1 plan is a prearranged, written schedule that lets corporate insiders buy or sell company stock at set times or amounts, even if they later learn material nonpublic information. Think of it like setting an automatic thermostat for trades: it creates a clear record that trades were planned in advance, reducing the risk of insider-trading accusations and helping investors trust that insider transactions are routine rather than based on secret information.
Grantor Retained Annuity Trust financial
"Represents the shares held by SNM 2025 Grantor Retained Annuity Trust"
A grantor retained annuity trust (GRAT) is an estate-planning tool where the person who creates the trust transfers assets into it but receives fixed cash payments (an annuity) from the trust for a set number of years; whatever remains after that term passes to designated beneficiaries. It matters to investors because it can shift future appreciation of assets out of the creator’s taxable estate—like putting an asset into a timed vending machine that pays you fixed amounts while any extra value that grows inside the machine goes to heirs with reduced gift or estate tax consequences.
restricted stock awards financial
"Includes 888 shares underlying unvested restricted stock awards granted to the Reporting Person"
Restricted stock awards are company shares given to employees or executives that cannot be sold or transferred until certain conditions — like staying with the company for a set time or meeting performance targets — are met, like a gift that is locked in a safe until rules are satisfied. Investors care because these awards tie management’s pay to company performance, can increase the number of shares outstanding when they become tradable (dilution), and may signal expected future selling pressure or commitment to long-term growth.
weighted average sale price financial
"Represents the weighted average sale price for the entire number of shares sold."
pecuniary interest financial
"disclaims beneficial ownership of the shares except to the extent of his pecuniary interest therein."
stock option (right to buy) financial
"security_title: Stock option (right to buy)"
SEC Form 4
FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
X
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
Maduck Sean

(Last)(First)(Middle)
C/O CORCEPT THERAPEUTICS INCORPORATED
101 REDWOOD SHORES PARKWAY

(Street)
REDWOOD CITY CALIFORNIA 94065

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
CORCEPT THERAPEUTICS INC [ CORT ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director10% Owner
XOfficer (give title below)Other (specify below)
See Remarks
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
05/27/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeVAmount(A) or (D)Price
Common Stock05/27/2026M75,000A$8.2783,977(1)D
Common Stock05/27/2026S(2)54,575D$65.3711(3)29,402(1)D
Common Stock05/27/2026S(2)20,425D$66.1599(4)8,977(1)D
Common Stock5,147ISee Footnote(5)
Common Stock20,570ISee Footnote(6)
Common Stock40,000ISee Footnote(7)
Common Stock34,000ISee Footnote(8)
Common Stock10,000ISee Footnote(9)
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year)7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Stock option (right to buy)$8.2705/27/2026M75,000 (10)02/10/2027Common Stock75,000$0.00166,986D
Explanation of Responses:
1. Includes 888 shares underlying unvested restricted stock awards granted to the Reporting Person by the Issuer on June 2, 2025, 228 shares underlying unvested restricted stock awards granted to the Reporting Person by the Issuer on September 2, 2025, 205 shares underlying unvested restricted stock awards granted to the Reporting Person by the Issuer on December 1, 2025 and 454 shares underlying unvested restricted stock awards granted to the Reporting Person by the Issuer March 2, 2026. 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.
2. This transaction was made pursuant to a 10b5-1 plan adopted by the Reporting Person on December 8, 2025 in effect at the time of this transaction.
3. Represents the weighted average sale price for the entire number of shares sold. The actual sale prices range from $65.00 to $65.99 per share. Information on the exact number of shares sold at each sale price can be obtained from the Issuer upon request.
4. Represents the weighted average sale price for the entire number of shares sold. The actual sale prices range from $66.00 to $66.50 per share. Information on the exact number of shares sold at each sale price can be obtained from the Issuer upon request.
5. Represents the shares held by Sean and Molly Maduck Living Trust of which the Reporting Person is a co-trustee.
6. Represents the shares held by MMM 2025, LLC of which the Reporting Person is a member and manager.
7. Represents the shares held by SNM 2025 Grantor Retained Annuity Trust of which the Reporting Person is the trustee.
8. Represents the shares held by SNM 2026 Grantor Retained Annuity Trust of which the Reporting Person is the trustee.
9. Represents the shares held by Duckhill Capital, LLC of which the Reporting Person is President and disclaims beneficial ownership of the shares except to the extent of his pecuniary interest therein.
10. Fully exercisable.
Remarks:
President, Corcept Endocrinology 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 Sean Maduck05/29/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

FAQ

What insider transactions did Corcept Therapeutics (CORT) report for Sean Maduck?

Sean Maduck exercised options for 75,000 shares and sold 75,000 shares of Corcept common stock. The sales were executed in two open-market transactions on May 27, 2026, following the option exercise, and were conducted under a pre-arranged Rule 10b5-1 trading plan.

At what prices did Sean Maduck sell Corcept Therapeutics (CORT) shares?

Maduck’s reported Corcept share sales occurred around the mid-$60 range. He sold 20,425 shares at a weighted average price of $66.1599 and 54,575 shares at a weighted average price of $65.3711, with actual trade prices spanning narrow ranges around those levels.

What stock options did Sean Maduck exercise at Corcept Therapeutics (CORT)?

Maduck exercised stock options covering 75,000 Corcept common shares at an $8.27 exercise price. The options were fully exercisable and were tied to a derivative position labeled as a stock option (right to buy) that was scheduled to expire on February 10, 2027.

How many Corcept Therapeutics (CORT) shares does Sean Maduck hold after these transactions?

After the reported trades, Maduck directly held 29,402 Corcept common shares. The filing also lists several indirect positions held through a living trust, LLCs, and grantor retained annuity trusts, plus unvested restricted stock awards scheduled to vest on their one-year anniversaries.

Were Sean Maduck’s Corcept (CORT) share sales discretionary or pre-planned?

The filing states Maduck’s share sales were made under a Rule 10b5-1 trading plan. This plan was adopted on December 8, 2025 and was in effect when the May 27, 2026 transactions occurred, indicating the trades were pre-arranged rather than timed at his sole discretion.

What indirect Corcept Therapeutics (CORT) holdings are associated with Sean Maduck?

Indirect holdings include shares in a living trust, LLCs, and grantor retained annuity trusts. The entities include the Sean and Molly Maduck Living Trust, MMM 2025, LLC, SNM 2025 and 2026 Grantor Retained Annuity Trusts, and Duckhill Capital, LLC, with certain economic interests and disclaimers noted.