Reporting owner · CIK 0001698310

Maduck Sean

Visual SEC Form 4 history across 1 companies, 34 transactions and 9 filings.

SRSee RemarksCORCEPT THERAPEUTICS INC
Open-market mix
Latest filingAug 27, 2026, 08:30 PM
Filings9Form 4 records
Buying$00 purchases
Selling$12.7M8 sales
Net value−$12.7MBuys minus sells
Companies13 securities
Most recentAug 25, 2026exercise

Open-market buy performance

90-day forward return on this insider's open-market purchases

90d forward
Forward return is not available yet

We compute this from each buy's stock performance 90 days after the transaction. The price history is still being populated for this insider's their open-market buys, so the average and median will appear here once the daily price refresh has covered the relevant trading days.

Monthly open-market activity

Reported purchase and sale transaction counts

Buys Sells
530-3-51Jan 251Feb 251Mar 25Jan 26Feb 26Mar 262May 263Aug 26

Net value flow

Buys minus sells

Jan 25
−$1M
Feb 25
−$1.3M
Mar 25
−$1.1M
Jan 26
$0
Feb 26
$0
Mar 26
$0
May 26
−$4.9M
Aug 26
−$4.3M

Transaction texture

Ownership and ticket size

Average P/S size$1.6M
Median P/S size$1.2M
Direct30
Indirect4
Aug 25, 2026exercise

Filing-only signals

Deterministic matches in this insider's history

Cluster Sellingpattern6Delayed Filingfiling-context4Derivative Transactionfiling-context9Direct Ownershipfiling-context30Large Holdings Increaseholdings7Large Holdings Reductionholdings10Large Salesize6Repeat Sellerpattern410b5-1 Detectedfiling-context26

Latest Form 4 facts

Quick context from source filings

Latest transaction

sale at CORCEPT THERAPEUTICS INC on Aug 25, 2026 valued at $739,965.

Review SEC filing
Latest buy

No open-market insider purchase is available.

Latest sale

sale at CORCEPT THERAPEUTICS INC on Aug 25, 2026 valued at $739,965.

Review SEC filing

Associated companies

Visual map of known reporting history

CORTCORCEPT THERAPEUTICS INC34 transactions · latest Aug 27, 2026, 08:30 PM
TickerInsiderRoleTypeSharesValueCodeSignals90d returnFiledTrans date
CORTMaduck Sean
SR
exercise10b5-130.9k$0M
Derivative Transaction Direct Ownership 10b5-1 Detected
—08/2708/25
CORTMaduck Sean
SR
sale10b5-15.87k-$73.9MS
Cluster Selling Direct Ownership Large Holdings Reduction+2
—08/2708/25
CORTMaduck Sean
SR
sale10b5-125.0k-$314MS
Cluster Selling Direct Ownership Large Holdings Reduction+3
—08/2708/25
CORTMaduck Sean
SR
exercise10b5-130.9k$35.1MM
Direct Ownership Large Holdings Increase 10b5-1 Detected
—08/2708/25
CORTMaduck Sean
SR
exercise10b5-13.66k$0M
Derivative Transaction Direct Ownership 10b5-1 Detected
−4.0%08/1808/14
CORTMaduck Sean
SR
sale10b5-13.66k-$41.9MS
Cluster Selling Direct Ownership Large Holdings Reduction+1
−4.0%08/1808/14
CORTMaduck Sean
SR
exercise10b5-13.66k$3.03MM
Direct Ownership Large Holdings Increase 10b5-1 Detected
−4.0%08/1808/14
CORTMaduck Sean
SR
exercise10b5-175.0k$0M
Derivative Transaction Direct Ownership Large Holdings Reduction+1
+76.7%05/2905/27
CORTMaduck Sean
SR
sale10b5-120.4k-$135MS
Direct Ownership Large Holdings Reduction Large Sale+2
+76.7%05/2905/27
CORTMaduck Sean
SR
sale10b5-154.5k-$356MS
Direct Ownership Large Holdings Reduction Large Sale+1
+76.7%05/2905/27

Maduck Sean Insider Activity FAQ

SEC Form 4 context

Who is Maduck Sean?

Maduck Sean is a reporting owner in SEC Form 4 filings with reporting owner CIK 0001698310.

Which companies has Maduck Sean reported transactions for?

CORCEPT THERAPEUTICS INC

When was Maduck Sean's latest insider buy?

No open-market insider purchase is available for this period.

When was Maduck Sean's latest insider sale?

sale at CORCEPT THERAPEUTICS INC on Aug 25, 2026 valued at $739,965.

Where can I see the original SEC filings?

Each transaction row links directly to the source SEC filing so the reported Form 4 details can be reviewed.

Are performance metrics included?

This version does not calculate win rates, forward returns, benchmark-adjusted returns, or high-conviction scores.