Transaction · 0001628280-26-060430

Oelschlager Kristen M

Oelschlager Kristen M, COO, reported a transaction classified as exercise at CASTLE BIOSCIENCES INC involving 4152.000000 shares for an estimated $0.00. Reported holdings after the transaction were 12458.000000 shares. The stored filing text includes a detected 10b5-1 reference.

exerciseSEC transaction code MCOO
CSTLCASTLE BIOSCIENCES INC
Trade date
Sep 01, 2026
Filing date
Sep 03, 2026
View on SEC Insider profile
Estimated value$0Shares × reported price
Shares traded4.15k$0.00 per share
Holdings after12.4kDirect
% of reported position tradedUnavailableThis security and ownership context
How reported position traded is calculated

Not calculated for derivative securities.

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 -14.2%1w ago +5.2%1d ago +1.2%
Returns since7d -1.0%30d +8.9%90d180d1y

Transaction facts

Stored Form 4 columns with their raw values

Derivative
Type
exercise
Code M
Identifier
0001628280-26-060430
Stock option (right to buy)
Transaction date
Sep 01, 2026
Filed Sep 03, 2026, 08:07 PM · 2d delay
Shares
4,152 sh
$0.00 per share
Estimated value
$0
Computed from shares × price
Holdings after
12,458 sh
Direct

Filing signal explanations

Badges describe filing facts only — not predictions.

Cluster 14dRepeat 30dPattern $100kLarge $1.00M
Derivative Transaction Direct Ownership Large Holdings Reduction 10b5-1 Detected
Filing-only score

-16 points

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

Mixed or weak signal

This filing has a negative filing-only score. It may be less informative as an insider-activity signal and needs extra context.

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 = 2

    Filing reported within two business days of the transaction.
  • derivative_transaction-16 points

    is_derivative = true

    Derivative exercise rows are less discretionary than open-market purchases.
  • 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 Operating Officer

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

    These transactions were made pursuant to a Rule 10b5-1 plan adopted by the Reporting Person, on March 17, 2026.

  2. F2

    Includes 68 shares acquired on August 31, 2026, under the Issuer's employee stock purchase plan.

  3. F3

    This transaction was executed in multiple trades at prices ranging from $33.015 to $33.900, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby un…

  4. F4

    Held by the Fritz Shorter Trust of which the Reporting Person and her spouse are the trustees and beneficiaries.

  5. F5

    The shares subject to the option are fully vested.

Original filing · 0001628280-26-060430
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