Transaction · 0001628280-26-064267

Juvenal Tobin W

Juvenal Tobin W, CCO, reported an open-market or private sale at CASTLE BIOSCIENCES INC involving 1034.000000 shares for an estimated $35362.80. Reported holdings after the transaction were 52007.000000 shares. The stored filing text includes a detected 10b5-1 reference.

Open-market sellSEC transaction code SCCO
CSTLCASTLE BIOSCIENCES INC
Trade date
Sep 30, 2026
Filing date
Oct 01, 2026
View on SEC Insider profile
Estimated value-$35.3kShares × reported price
Shares traded1.03k$34.20 per share
Holdings after52.0kDirect
% of reported position traded1.95%This security and ownership context
How reported position traded is calculated

Shares sold ÷ (holdings after + shares sold). Estimated position before: 53,041 shares.

Row-level estimate for this security and ownership context, not the insider’s complete portfolio. Joint ownership, other transactions in the filing, amendments and footnotes can affect interpretation.

CSTL price since this filing

Daily closing prices, with the filing date and available return windows
CSTL · Daily closing priceLoading daily prices…
Filing dateReturn windows appear as prices become available.
Pre-filing1mo ago -6.3%1w ago -1.0%1d ago -1.0%
Returns since7d -4.4%30d90d180d1y

Transaction facts

Stored Form 4 columns with their raw values

Non-derivative
Type
Sell
Code S
Identifier
0001628280-26-064267
Common Stock
Transaction date
Sep 30, 2026
Filed Oct 01, 2026, 08:21 PM · 1d delay
Shares
1,034 sh
$34.20 per share
Estimated value
-$35.3k
Computed from shares × price
Holdings after
52,007 sh
Direct

Filing signal explanations

Badges describe filing facts only — not predictions.

Cluster 14dRepeat 30dPattern $100kLarge $1.00M
Cluster Selling Direct Ownership Repeat Seller 10b5-1 Detected
Filing-only score

0 points

Compact filing score computed from stored Form 4 facts. Version v1.

Neutral filing signal

This filing is broadly neutral on the filing-only scale. The Form 4 facts do not strongly tilt positive or negative.

How this score is calculated
  • direct_ownership+6 points

    direct_or_indirect_ownership = D

    Direct ownership reports the insider's personal stake.
  • timely_filing+4 points

    reporting_delay_days = 1

    Filing reported within two business days of the transaction.
  • tenb5_1_detected-10 points

    is_10b5_1 = true

    Stored filing content includes detected 10b5-1 language.
Read the scoring methodology

Signed filing-only points, not a probability or expected return. Version v1.

Reported relationships & other filings

Form 4 relationship flags and nearby filing context

Reported roles

Chief Commercial Officer

Officer YesDirector No10% NoOther No
Footnotes & amended
  1. F1

    This transaction was made pursuant to a Rule 10b5-1 plan adopted by the Reporting Person on May 28, 2026.

  2. F2

    This transaction was executed in multiple trades at prices ranging from $35.010 to $35.935, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby un…

  3. F3

    This transaction was executed in multiple trades at prices ranging from $34.090 to $34.525, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby un…

Original filing · 0001628280-26-064267
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