Kristen M Oelschlager

COO · CASTLE BIOSCIENCES INC

Rank #12,971 SEC EDGAR (United States) ↗ Files from United States

Details

Officer of the companyHealthcare Providers & ServicesCSTLSEC CIK 0001856565

Computed from SEC EDGAR filings and closing prices — not copied from any wealth ranking. Dataset . How we calculate this.

Disclosed holdings
$4.5M
1-day change
▲ 0.80%
Positions on file
1
issuers disclosed in Forms 3/4/5 and Schedules 13D/G

Disclosed holdings over time 53 weekly points

What the 1 currently disclosed position would have been worth at each week’s closing price. A rising line means the shares got more valuable, not that this person bought more.

How the line is built

Share counts are as last reported to the SEC and held constant; only prices move.

2025-09-05$2.6M – $5.8M2026-09-04

Insider activity Jul 1, 2024 – Mar 4, 2026

Kristen M Oelschlager is recorded in filings to the U.S. SEC via EDGAR as officer of the company, and reported 31 transactions between Jul 1, 2024 and Mar 4, 2026. The buy and sell totals below count only codes P, S.

Why the other codes are excluded

Share awards (A), shares withheld to pay tax (F), option exercises (M) and gifts (G) also appear in the table, but they are consequences of a pay package or a private transfer, not a decision to buy or sell on the open market. Counting them would turn this into a compensation ranking.

Open-market buys (code P)
None
0 purchases on file
Open-market sales (code S)
$2.83M
11 sales on file priced rows only
All reported transactions
31
every code, including awards and exercises
Pattern
Net seller in the final 12 months of the window
last 12 months of the window

Events from filings

Detected automatically in the filings linked below. Each headline is built from the numbers in those filings, not written by a model. Newest first; events older than 45 days stay listed and are marked as older.

Kristen M Oelschlager sold 8,586 CASTLE BIOSCIENCES INC (CSTL) shares for $255,622 on Aug 3, 2026

Unusual change in a direct holding

Flagged because the change that day in the shares this person holds directly was unusually large compared with their own earlier changes. The rows below are the open-market trades reported that day; under each share count is the balance the filing reports after that line.

Kristen M Oelschlager sold 8,586 CASTLE BIOSCIENCES INC (CSTL) shares for $255,622 on Aug 3, 2026
Date Insider Transaction Shares Price Value Filing
Aug 3, 2026 Kristen M Oelschlager S Open-market sale 3,000 held after: 18,874 $29.12 $87,360 SEC filing ↗
Aug 3, 2026 Kristen M Oelschlager S Open-market sale 4,486 held after: 14,388 $30.00 $134,580 SEC filing ↗
Aug 3, 2026 Kristen M Oelschlager S Open-market sale 1,100 held after: 13,288 $30.62 $33,682 SEC filing ↗

Total of the rows above: $255,622, in the currency the filings report.

Source: SEC EDGAR (United States); every row links to where it was published. Event computed Sep 14, 2026.

Kristen M Oelschlager sold 8,586 CASTLE BIOSCIENCES INC (CSTL) shares for $209,650 on Jul 1, 2026

Unusual change in a direct holding

Flagged because the change that day in the shares this person holds directly was unusually large compared with their own earlier changes. The rows below are the open-market trades reported that day; under each share count is the balance the filing reports after that line.

Kristen M Oelschlager sold 8,586 CASTLE BIOSCIENCES INC (CSTL) shares for $209,650 on Jul 1, 2026
Date Insider Transaction Shares Price Value Filing
Jul 1, 2026 Kristen M Oelschlager S Open-market sale 8,186 held after: 22,274 $24.40 $199,738 SEC filing ↗
Jul 1, 2026 Kristen M Oelschlager S Open-market sale 400 held after: 21,874 $24.78 $9,912 SEC filing ↗

Total of the rows above: $209,650, in the currency the filings report.

Source: SEC EDGAR (United States); every row links to where it was published. Event computed Sep 14, 2026.

Kristen M Oelschlager sold 14,888 CASTLE BIOSCIENCES INC (CSTL) shares for $585,247 on Dec 17, 2025

Unusual change in a direct holding

Flagged because the change that day in the shares this person holds directly was unusually large compared with their own earlier changes. The rows below are the open-market trades reported that day; under each share count is the balance the filing reports after that line.

Kristen M Oelschlager sold 14,888 CASTLE BIOSCIENCES INC (CSTL) shares for $585,247 on Dec 17, 2025
Date Insider Transaction Shares Price Value Filing
Dec 17, 2025 Kristen M Oelschlager S Open-market sale 14,888 held after: 12,323 $39.31 $585,247 SEC filing ↗

Source: SEC EDGAR (United States); every row links to where it was published. Event computed Sep 14, 2026.

Kristen M Oelschlager sold 18,932 CASTLE BIOSCIENCES INC (CSTL) shares for $664,513 on Nov 11, 2025

Unusual change in a direct holding

Flagged because the change that day in the shares this person holds directly was unusually large compared with their own earlier changes. The rows below are the open-market trades reported that day; under each share count is the balance the filing reports after that line.

Kristen M Oelschlager sold 18,932 CASTLE BIOSCIENCES INC (CSTL) shares for $664,513 on Nov 11, 2025
Date Insider Transaction Shares Price Value Filing
Nov 11, 2025 Kristen M Oelschlager S Open-market sale 18,932 held after: 12,323 $35.10 $664,513 SEC filing ↗

Source: SEC EDGAR (United States); every row links to where it was published. Event computed Sep 14, 2026.

Reported transactions

Price 0.00 is a real reported figure on gifts (G) and share awards (A) — not a missing number. The 25 most recent rows are grouped into 19 lines by date, company and transaction type — open a line to see every lot with its own source link. We hold 43 on file in total. See the full history on EDGAR ↗

How to read this list

Every row is one line of one Form 4 or Form 5, with the filing it came from. Where the record carries no price at all we leave the cell empty instead of guessing one.

The shares and money on a grouped line add up only the lots listed inside that line, and only when every one of them carries the figure. Where a group mixes more than one reporting currency we leave the money blank rather than convert — no source publishes the rate that conversion would need.

  1. CASTLE BIOSCIENCES INC CSTL S Open-market sale × 2 4,152 shares $138.6K
    The 2 lots that make up this line, each with the source behind it.
    Shares Price Value Filing
    200 $34.02 $6.8K SEC filing ↗
    3,952 $33.36 $131.8K SEC filing ↗
  2. CASTLE BIOSCIENCES INC CSTL M Option exercise or conversionnot a buy/sell decision 4,152 shares $14.0K at $3.38 SEC filing ↗
  3. CASTLE BIOSCIENCES INC CSTL S Open-market sale × 2 12,384 shares $426.3K
    The 2 lots that make up this line, each with the source behind it.
    Shares Price Value Filing
    5,223 $34.64 $180.9K SEC filing ↗
    7,161 $34.26 $245.3K SEC filing ↗
  4. CASTLE BIOSCIENCES INC CSTL S Open-market sale 12,218 shares $411.6K at $33.69 SEC filing ↗
  5. CASTLE BIOSCIENCES INC CSTL S Open-market sale × 3 8,586 shares $255.6K
    The 3 lots that make up this line, each with the source behind it.
    Shares Price Value Filing
    1,100 $30.62 $33.7K SEC filing ↗
    4,486 $30.00 $134.6K SEC filing ↗
    3,000 $29.12 $87.4K SEC filing ↗
  6. CASTLE BIOSCIENCES INC CSTL S Open-market sale × 2 8,586 shares $209.7K
    The 2 lots that make up this line, each with the source behind it.
    Shares Price Value Filing
    400 $24.78 $9.9K SEC filing ↗
    8,186 $24.40 $199.7K SEC filing ↗
  7. CASTLE BIOSCIENCES INC CSTL S Open-market sale 8,587 shares $177.8K at $20.71 SEC filing ↗
  8. CASTLE BIOSCIENCES INC CSTL M Option exercise or conversionnot a buy/sell decisionreported at zero 25,771 shares $0 at $0.00 SEC filing ↗
  9. CASTLE BIOSCIENCES INC CSTL F Shares withheld for taxesnot a buy/sell decision 6,792 shares $191.3K at $28.17 SEC filing ↗
  10. CASTLE BIOSCIENCES INC CSTL F Shares withheld for taxesnot a buy/sell decision 2,427 shares $66.9K at $27.57 SEC filing ↗
  11. CASTLE BIOSCIENCES INC CSTL A Grant or awardnot a buy/sell decisionreported at zero 9,207 shares $0 at $0.00 SEC filing ↗
  12. CASTLE BIOSCIENCES INC CSTL S Open-market sale 14,888 shares $585.2K at $39.31 SEC filing ↗
  13. CASTLE BIOSCIENCES INC CSTL M Option exercise or conversionnot a buy/sell decisionreported at zero 6,170 shares $0 at $0.00 SEC filing ↗
  14. CASTLE BIOSCIENCES INC CSTL F Shares withheld for taxesnot a buy/sell decision 2,552 shares $97.0K at $38.02 SEC filing ↗
  15. CASTLE BIOSCIENCES INC CSTL M Option exercise or conversionnot a buy/sell decisionreported at zero 15,961 shares $0 at $0.00 SEC filing ↗
  16. CASTLE BIOSCIENCES INC CSTL F Shares withheld for taxesnot a buy/sell decision 4,691 shares $179.4K at $38.25 SEC filing ↗
  17. CASTLE BIOSCIENCES INC CSTL S Open-market sale 18,932 shares $664.5K at $35.10 SEC filing ↗
  18. CASTLE BIOSCIENCES INC CSTL S Open-market sale 12,678 shares $317.5K at $25.04 SEC filing ↗
  19. CASTLE BIOSCIENCES INC CSTL S Open-market sale × 2 30,684 shares $669.7K
    The 2 lots that make up this line, each with the source behind it.
    Shares Price Value Filing
    18,007 $21.69 $390.6K SEC filing ↗
    12,677 $22.02 $279.1K SEC filing ↗

Disclosed holdings

Shares is the amount on the form; value is that amount times the closing price shown. Rows with no closing price are left blank, so they may add up to less than the headline figure.

What is not counted here

Each row is one filing you can open. Private companies, real estate, bonds and crypto are not in SEC insider filings and are therefore not counted here.

Equity positions disclosed to the SEC, with the source filing behind each row.
Issuer Ticker Security Shares Close Value Form Reported Filing
CASTLE BIOSCIENCES INC CSTL Common Stock (indirect) 136,298 $32.91 $4.5M 4 EDGAR ↗

Other insiders at the same companies

People who also file with the SEC at a company where Kristen M Oelschlager reports shares.

Sharing a filing does not mean they work together day to day — it means both names appear on the same issuer’s insider record.

Sources

The filings linked in the tables above are the sources for every figure on this page.

Think a number here is wrong? Open the linked filing and compare — how to report it.

Profile record last refreshed Sep 8, 2026.