STOCK TITAN
  1. Home
  2. Sec-filings
  3. CSTL
  4. [144] CASTLE BIOSCIENCES INC SEC Filing

CSTL (CSTL) insider schedules potential $630,000 sale of 22,500 shares

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
144

Rhea-AI Filing Summary

An affiliate of CSTL has filed to sell common stock through a broker-dealer. The notice covers the potential sale of 22,500 shares of common stock, with an indicated aggregate market value of $630,000, to be sold through NASD on or after July 31, 2026.

The shares derive from multiple equity compensation grants, including Restricted Stock Units and Restricted Stock Awards acquired on dates such as December 10, 2021, February 28, 2022, August 9, 2024, December 9, 2024, and December 10, 2024, with individual grant sizes ranging from 494 to 12,074 shares.

Positive

  • None.

Negative

  • None.
Planned shares to be sold 22,500 shares Common stock covered by the notice of proposed sale
Aggregate market value $630,000 Value associated with the 22,500 common shares
Earliest sale date 07/31/2026 Date tied to the proposed disposition of common shares
RSU grant 4,666 shares Restricted Stock Units acquired as compensation on 12/10/2024
RSU grant 1,323 shares Restricted Stock Units acquired as compensation on 12/10/2021
Restricted Stock Award 494 shares Restricted Stock Awards acquired as compensation on 02/28/2022
Largest RSU grant 12,074 shares Restricted Stock Units acquired as compensation on 12/09/2024
Form 144 regulatory
"144: Securities To Be Sold"
Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.
Restricted Stock Units financial
"Acquired as compensation -- Restricted Stock Units"
Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.
Restricted Stock Awards financial
"Acquired as compensation -- Restricted Stock Awards"
Restricted stock awards are company shares given to employees or executives that cannot be sold or transferred until certain conditions — like staying with the company for a set time or meeting performance targets — are met, like a gift that is locked in a safe until rules are satisfied. Investors care because these awards tie management’s pay to company performance, can increase the number of shares outstanding when they become tradable (dilution), and may signal expected future selling pressure or commitment to long-term growth.
aggregate market value financial
"22500 | 630000 | 30329952 | 07/31/2026"
Aggregate market value is the combined price you would pay to buy all outstanding shares of a company or all companies in a group at current market prices — essentially the sum of each stock’s market capitalization. It matters to investors because it shows the overall size and weight of an investment or sector (like the total cost to buy every piece of a puzzle), helps compare scale across companies or markets, and influences index composition and risk exposure.

AI-generated analysis. How Rhea-AI works. Not financial advice.

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google
Add on Google

FAQ

What amount of CSTL common stock is covered by this Form 144 filing?
The filing covers a potential sale of 22,500 shares of CSTL common stock. These shares are planned for sale through a broker-dealer and reflect stock received from prior equity compensation grants.

What is the aggregate market value of CSTL shares in the planned Form 144 sale?
The planned sale has an indicated aggregate market value of $630,000. This value corresponds to the 22,500 shares of CSTL common stock referenced in the Form 144 notice.

When is the CSTL Form 144 sale expected to occur?
The Form 144 indicates sales may occur on or after July 31, 2026. This is the date associated with the proposed disposition of 22,500 CSTL shares through a broker-dealer.

What type of compensation awards generated the CSTL shares in this Form 144?
The shares arise from Restricted Stock Units and Restricted Stock Awards. These equity awards were acquired as compensation on several dates, including 12/10/2021, 02/28/2022, 08/09/2024, 12/09/2024, and 12/10/2024.

How many CSTL shares were in the largest individual compensation grant referenced?
The largest single compensation grant listed is 12,074 shares of CSTL common stock. This grant was acquired as compensation in the form of Restricted Stock Units dated 12/09/2024.

Does the CSTL Form 144 list any securities sold in the past three months?
The section for Securities Sold During The Past 3 Months appears without populated sale entries. The filing instead details the planned sale of 22,500 shares and the underlying compensation grants.

144: Filer Information

144: Issuer Information

144: Securities Information



Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold


* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.



Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

144: Remarks and Signature

Source: View Original Filing on SEC EDGAR