Stock Trading Canary

United States · SEC Form 4 · Snapshot date: 2026-10-18 · Built: 2026-10-18 · 中文

← United States · Coverage record

US · SEC FORM 4

CORCEPT THERAPEUTICS INC

CORT · Nasdaq · CIK 0001088856 · Healthcare · Biotechnology

INSIDER SIGNAL

No active buy signal

0 qualifying P purchase groups
in the current 180-day scoring window

163 Form 4 transaction lines observed in the same window
89 sales · 74 option, withholding, award, gift or other lines

Last qualifying purchase2026-03-17 · BAKER G LEONARD JR · $3.3M

WHY NO ACTIVE SIGNAL?

Purchase activityNone
Recent buyingNone
Recent salesHigh
Buy signal statusInactive
Score anatomy

No score is calculated because there is no qualifying purchase in the active window. Unavailable inputs are not treated as zero or as a bearish signal.

ClusterNot calculated
Purchase sizeNot calculated
RoleNot calculated
RecencyNot calculated
ConvictionNot calculated

Why is there no score?

  • No qualifying open-market purchase supplies cluster, size, role, recency or conviction inputs.
  • Sales and other Form 4 activity remain visible as context and do not create a negative score.

Sales and other Form 4 activity are shown separately and do not create a negative buy signal. Absence of buying is not scored as bearish.

Insider activity timeline

Owner lanes show the latest 180 days. Symbol shape identifies the transaction type; sales remain context only.

AprMayJunJulAugSepOct
Maduck SeanSee Remarks
○▼○▼○○▼○○▼○▼
Lyon Joseph DouglasSee Remarks
○○○▼○▼○▼
Robb Gary CharlesChief Business Officer
○○▼○○○○
Vieira Roberto WandenkolkPresident, Oncology
○○○▼▼○▼
WILSON JAMES NDirector
▼▼▼
Park KimberlyDirector
○○▼
● Purchase▼ Sale○ Other

Showing the six most active owners; 3 additional owner(s) remain in Form 4 evidence.

Purchase breadth, concentration & cluster buying

These modules activate when qualifying purchases enter the 180-day research window.

SIGNAL HISTORY

No recorded active-signal snapshot

Scores are archived only when the company qualifies for a published US buy-signal snapshot. Last qualifying purchase: 2026-03-17 · BAKER G LEONARD JR.

Recent Form 4 activity

2Purchases
111Sales
148Other Form 4 lines
86SEC filings · 365 days
BUYING0 qualifying P line(s) · 180 days
SELLING89 sale line(s) · context only
OTHER74 exercise / withholding / award / gift / other lines
10b5-1 / PLANNEDNot assessed

P is an open-market or private purchase. S is a sale. M, F, A and G usually describe exercises, tax withholding, awards and gifts. These categories remain visually separate.

Market context

Market context has not been captured for this ticker yet. The daily market-context job processes the US universe in rotating batches.

Short interest

Short interest is external context reported to FINRA by broker-dealers. It does not affect the Insider Signal.

Shares short
8,540,393
Previous report
9,350,914
Avg daily volume
2,389,305
Days to cover
3.6

FINRA settlement date: 2026-09-30 · Captured 2026-10-12 · FINRA equity short interest ↗. A share count, published about a week after each of two settlement dates a month; not a percentage of shares outstanding.

Historical equity purchases

Qualifying code P transactions in the local Form 4 history, including purchases outside the current signal window.

Transaction dateReporting ownerTypeSecuritySharesAvg. priceApprox. valueSource
2026-03-17BAKER G LEONARD JRPurchase (P)Common Stock100,000USD 33.14USD 3,313,562SEC filing ↗
2021-06-11BAKER G LEONARD JRPurchase (P)Common Stock150,000USD 21.53USD 3,229,500SEC filing ↗
2020-12-01BAKER G LEONARD JRPurchase (P)Common Stock68USD 22.64USD 1,540SEC filing ↗
2020-11-30BAKER G LEONARD JRPurchase (P)Common Stock1,109USD 22.80USD 25,285SEC filing ↗
2020-11-25BAKER G LEONARD JRPurchase (P)Common Stock361USD 22.81USD 8,234SEC filing ↗
2020-11-24BAKER G LEONARD JRPurchase (P)Common Stock1,429USD 22.93USD 32,767SEC filing ↗
2020-11-23BAKER G LEONARD JRPurchase (P)Common Stock1,551USD 22.93USD 35,564SEC filing ↗
2020-11-18BAKER G LEONARD JRPurchase (P)Common Stock2,372USD 17.91USD 42,483SEC filing ↗
2020-11-17BAKER G LEONARD JRPurchase (P)Common Stock7,883USD 17.82USD 140,475SEC filing ↗
2020-11-13BAKER G LEONARD JRPurchase (P)Common Stock200USD 17.94USD 3,588SEC filing ↗
2020-11-10BAKER G LEONARD JRPurchase (P)Common Stock15,000USD 17.71USD 265,650SEC filing ↗
2020-11-09BAKER G LEONARD JRPurchase (P)Common Stock3,786USD 17.96USD 67,997SEC filing ↗
2020-11-06BAKER G LEONARD JRPurchase (P)Common Stock13,500USD 17.98USD 242,730SEC filing ↗
2020-09-01BAKER G LEONARD JRPurchase (P)Common Stock25,807USD 12.50USD 322,588SEC filing ↗
2020-08-28BAKER G LEONARD JRPurchase (P)Common Stock20,444USD 12.48USD 255,141SEC filing ↗

Form 4 evidence

261 transaction lines in the latest 365-day window; 931 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-10-15WILSON JAMES NSale (S)Common Stock10,000USD 114.81USD 1,148,083SEC filing ↗
2026-10-02Vieira Roberto WandenkolkSale (S)Common Stock8,333USD 116.10USD 967,448SEC filing ↗
2026-10-02Vieira Roberto WandenkolkOption exercise / conversion (M)Common Stock8,333USD 21.63USD 180,243SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-10-15WILSON JAMES NSale (S)Common Stock10,000USD 114.81USD 1,148,083SEC filing ↗
2026-10-02Vieira Roberto WandenkolkSale (S)Common Stock8,333USD 116.10USD 967,448SEC filing ↗
2026-10-02Vieira Roberto WandenkolkOption exercise / conversion (M)Common Stock8,333USD 21.63USD 180,243SEC filing ↗
2026-10-02Maduck SeanSale (S)Common Stock24,587USD 116.28USD 2,858,884SEC filing ↗
2026-10-02Maduck SeanOption exercise / conversion (M)Common Stock24,587USD 8.27USD 203,334SEC filing ↗
2026-10-02Lyon Joseph DouglasSale (S)Common Stock9,190USD 116.13USD 1,067,258SEC filing ↗
2026-10-02Lyon Joseph DouglasOption exercise / conversion (M)Common Stock9,190USD 17.18USD 157,864SEC filing ↗
2026-10-01Maduck SeanSale (S)Common Stock413USD 115.54USD 47,717SEC filing ↗
2026-10-01Maduck SeanOption exercise / conversion (M)Common Stock413USD 8.27USD 3,416SEC filing ↗
2026-10-01Lyon Joseph DouglasSale (S)Common Stock810USD 115.40USD 93,473SEC filing ↗
2026-10-01Lyon Joseph DouglasOption exercise / conversion (M)Common Stock810USD 13.56USD 10,984SEC filing ↗
2026-09-24Robb Gary CharlesGift (G)Common Stock22,100USD 0.00USD 0SEC filing ↗
2026-09-17Robb Gary CharlesOption exercise / conversion (M)Common Stock17,493USD 8.27USD 144,667SEC filing ↗
2026-09-16Vieira Roberto WandenkolkSale (S)Common Stock296USD 100.82USD 29,843SEC filing ↗
2026-09-15WILSON JAMES NSale (S)Common Stock10,000USD 110.69USD 1,106,932SEC filing ↗
2026-09-14Lyon Joseph DouglasSale (S)Common Stock10,000USD 113.50USD 1,134,950SEC filing ↗
2026-09-14Lyon Joseph DouglasOption exercise / conversion (M)Common Stock10,000USD 12.99USD 129,863SEC filing ↗
2026-09-02Vieira Roberto WandenkolkSale (S)Common Stock58,333USD 110.76USD 6,460,755SEC filing ↗
2026-09-02Vieira Roberto WandenkolkOption exercise / conversion (M)Common Stock58,333USD 21.63USD 1,261,743SEC filing ↗
2026-09-02Vieira Roberto WandenkolkTax withholding (F)Common Stock102USD 113.38USD 11,565SEC filing ↗
2026-09-02Robb Gary CharlesTax withholding (F)Common Stock91USD 113.38USD 10,318SEC filing ↗
2026-09-02Mokari AtabakTax withholding (F)Common Stock102USD 113.38USD 11,565SEC filing ↗
2026-09-02Maduck SeanTax withholding (F)Common Stock117USD 113.38USD 13,265SEC filing ↗
2026-09-02Lyon Joseph DouglasTax withholding (F)Common Stock72USD 113.38USD 8,163SEC filing ↗
2026-09-01Vieira Roberto WandenkolkAward / grant (A)Common Stock276USD 56.69USD 15,646SEC filing ↗
2026-09-01Robb Gary CharlesAward / grant (A)Common Stock328USD 56.69USD 18,594SEC filing ↗
2026-09-01Mokari AtabakAward / grant (A)Common Stock276USD 56.69USD 15,646SEC filing ↗
2026-09-01Maduck SeanSale (S)Common Stock25,000USD 114.43USD 2,860,771SEC filing ↗
2026-09-01Maduck SeanOption exercise / conversion (M)Common Stock25,000USD 8.27USD 206,750SEC filing ↗
2026-09-01Maduck SeanAward / grant (A)Common Stock300USD 56.69USD 17,007SEC filing ↗

Multiple price lines in one filing are grouped and share-weighted. Price and value are blank when a grouped filing line lacks price evidence.

Snapshot & identity

Snapshot date2026-10-18
Ranking versionUS-v1.2
Data qualityPASS ELIGIBLE · —
TickerCORT
CIK0001088856
SectorHealthcare
IndustryBiotechnology Yahoo Finance
SEC SIC2834 Pharmaceutical Preparations
ExchangeNasdaq

Data coverage

Local Form 4 history931 transaction lines from 2020-01-01 to 2026-10-15
17 P purchase lines · 326 S sale lines · 588 other lines
SEC company submissionsOpen SEC filings ↗

Local ledger as of 2026-10-18. Mapping status is an audit field and does not erase SEC filing evidence.