Reporting owner · CIK 0001856542

Juvenal Tobin W

Visual SEC Form 4 history across 1 companies, 9 transactions and 5 filings.

CCOChief Commercial OfficerCASTLE BIOSCIENCES INC
Open-market mix
Latest filingAug 27, 2026, 08:38 PM
Filings5Form 4 records
Buying$00 purchases
Selling$435.2K3 sales
Net value−$435.2KBuys minus sells
Companies13 securities
Most recentAug 25, 2026sale

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
530-3-5Jan 241Jan 25Jan 262Aug 26

Net value flow

Buys minus sells

Jan 24
$0
Jan 25
−$66.9K
Jan 26
$0
Aug 26
−$368.3K

Transaction texture

Ownership and ticket size

Average P/S size$145.1K
Median P/S size$66.9K
Direct9
Indirect0
Aug 25, 2026sale

Filing-only signals

Deterministic matches in this insider's history

Cluster Sellingpattern3Derivative Transactionfiling-context3Direct Ownershipfiling-context9Large Holdings Increaseholdings1Repeat Sellerpattern110b5-1 Detectedfiling-context3

Latest Form 4 facts

Quick context from source filings

Latest transaction

sale at CASTLE BIOSCIENCES INC on Aug 25, 2026 valued at $317,112.

Review SEC filing
Latest buy

No open-market insider purchase is available.

Latest sale

sale at CASTLE BIOSCIENCES INC on Aug 25, 2026 valued at $317,112.

Review SEC filing

Associated companies

Visual map of known reporting history

CSTLCASTLE BIOSCIENCES INC9 transactions · latest Aug 27, 2026, 08:38 PM
TickerInsiderRoleTypeSharesValueCodeSignals90d returnFiledTrans date
CSTLJuvenal Tobin W
CCO
sale10b5-19.05k-$31.7MS
Cluster Selling Direct Ownership Repeat Seller+1
—08/2708/25
CSTLJuvenal Tobin W
CCO
sale10b5-11.73k-$5.11MS
Cluster Selling Direct Ownership 10b5-1 Detected
+3.5%08/1908/17
CSTLJuvenal Tobin W
CCO
grant9.20k$0A
Derivative Transaction Direct Ownership Large Holdings Increase
—01/1401/12
CSTLJuvenal Tobin W
CCO
grant9.20k$0A
Direct Ownership
—01/1401/12
CSTLJuvenal Tobin W
CCO
sale10b5-12.23k-$6.69MS
Cluster Selling Direct Ownership 10b5-1 Detected
—01/08/202501/06/2025
CSTLJuvenal Tobin W
CCO
exercise3.40k$0M
Derivative Transaction Direct Ownership
—01/04/202401/02/2024
CSTLJuvenal Tobin W
CCO
exercise3.30k$0M
Derivative Transaction Direct Ownership
—01/04/202401/02/2024
CSTLJuvenal Tobin W
CCO
exercise3.40k$1.14MM
Direct Ownership
—01/04/202401/02/2024
CSTLJuvenal Tobin W
CCO
exercise3.30k$788kM
Direct Ownership
—01/04/202401/02/2024

Juvenal Tobin W Insider Activity FAQ

SEC Form 4 context

Who is Juvenal Tobin W?

Juvenal Tobin W is a reporting owner in SEC Form 4 filings with reporting owner CIK 0001856542.

Which companies has Juvenal Tobin W reported transactions for?

CASTLE BIOSCIENCES INC

When was Juvenal Tobin W's latest insider buy?

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

When was Juvenal Tobin W's latest insider sale?

sale at CASTLE BIOSCIENCES INC on Aug 25, 2026 valued at $317,112.

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.