Transaction · 0001628280-26-064912

Oelschlager Kristen M

Oelschlager Kristen M, COO, reported a transaction classified as exercise at CASTLE BIOSCIENCES INC involving 4153.000000 shares for an estimated $14037.14. Reported holdings after the transaction were 17509.000000 shares. The stored filing text includes a detected 10b5-1 reference.

exerciseSEC transaction code MCOO
CSTLCASTLE BIOSCIENCES INC
Filing timeOct 05
Trade dateOct 01, 2026
Filing · SECView on SEC
InsiderProfile
% of reported position tradedUnavailableCalculated only for code-P purchases and code-S sales.

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.

Price performance since filing

Close on the filing date, the pre-filing context, and the forward return at standard windows
Price at filing
$36.65
Pre-filing
1mo ago -8.8%1w ago -4.0%1d ago -3.1%
Returns since
7d30d90d180d1y

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 2026-10-05Filed yesterday · 1 day of post-filing data
Loading…
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

Non-derivative
Type
exercise
Code M
Identifier
0001628280-26-064912
Common Stock
Transaction date
Oct 01, 2026
Filed Oct 05, 2026, 08:07 PM · 4d delay
Shares
4.15k sh
$3.38 per share
Estimated value
$14.0k
Computed from shares × price
Holdings after
17.5k sh
Direct

Filing signal explanations

Badges describe filing facts only — not predictions.

Cluster 14dRepeat 30dPattern $100kLarge $1.00M
Direct Ownership 10b5-1 Detected
-4score
Filing-only score

-4

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.

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

    This transaction was executed in multiple trades at prices ranging from $35.21 to $36.19, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby unde…

  3. F3

    This transaction was executed in multiple trades at prices ranging from $36.21 to $36.78, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby unde…

  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 · 0001628280-26-064912
Related transactions

0 other filings

Same reporting owner
Recent company activity

0 recent txs

CSTL