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
Filing timeSep 03
Trade dateSep 01, 2026
Filing · SECView on SEC
InsiderProfile

Price performance since filing

Close on the filing date, the pre-filing context, and the forward return at standard windows
Price at filing
$32.65
Pre-filing
1mo ago -14.2%1w ago +5.2%1d ago +1.2%
Returns since
7d +0.0%30d +0.0%90d +0.0%180d +0.0%1y +0.0%

CSTL price since this filing

30 days of pre-filing context and vertical markers at the filing date plus 7d / 30d / 90d / 180d / 1y afterwards
CSTL since 2026-09-03Filed today · pre-filing context shaded
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Filing datePost-filing windows (7d, 30d, 90d, 180d, 1y)30 days of pre-filing context

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
4.15k sh
$0 per share
Estimated value
$0
Computed from shares × price
Holdings after
12.4k sh
Direct

Filing signal explanations

Badges describe filing facts only — not predictions.

Cluster 14dRepeat 30dPattern $10.0MLarge $100M
Derivative Transaction Direct Ownership Large Holdings Reduction 10b5-1 Detected
-16score
Filing-only score

-16

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.

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
Related transactions

0 other filings

Same reporting owner
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