SEC Form 4 reporting owner

Juvenal Tobin W

Juvenal Tobin W has filed 25 Form 4 transactions reported between November 20, 2025 and September 15, 2026, as Chief Commercial Officer of CASTLE BIOSCIENCES INC.

Name as filed: Juvenal Tobin W

Open-market buys, 24 mo

None

reported

Open-market sales, 24 mo

$2.3M

12 lines

Companies

with Form 4 filings

Latest transaction

Sep 15, 2026

transaction date

Roles and reported holdings

CSTLCASTLE BIOSCIENCES INC
Nov 20, 2025 – Sep 15, 2026
Chief Commercial Officer
Held directly58,584 sh as of Sep 15, 2026 · Form 4
24 months: $2.3M sold

Transaction history

All 25 reported transactions, newest first. Every row links to the Form 4 on SEC EDGAR.

Date	Company	Type	Shares	Price	Value	Owned after	Filing
Sep 15, 2026	CSTLChief Commercial Officer	Open-market saleCode S · direct	3,294	$35.14	$116K@ $35.14	58,584	Form 4
Sep 14, 2026	CSTLChief Commercial Officer	Open-market saleCode S · direct	3,306	$32.32	$107K@ $32.32	61,878	Form 4
Aug 31, 2026	CSTLChief Commercial Officer	Open-market saleCode S · direct	1,730	$32.81	$57K@ $32.81	65,184	Form 4
Aug 25, 2026	CSTLChief Commercial Officer	Open-market saleCode S · direct	9,050	$35.04	$317K@ $35.04	66,914	Form 4
Aug 17, 2026	CSTLChief Commercial Officer	Open-market saleCode S · direct	1,730	$29.59	$51K@ $29.59	75,964	Form 4
Aug 3, 2026	CSTLChief Commercial Officer	Open-market saleCode S · direct	1,730	$28.25	$49K@ $28.25	78,995	Form 4
Jul 31, 2026	CSTLChief Commercial Officer	Open-market saleCode S · direct	1,891	$30.26	$57K@ $30.26	80,725	Form 4
Jul 31, 2026	CSTLChief Commercial Officer	Open-market saleCode S · direct	7,270	$29.58	$215K@ $29.58	82,616	Form 4
Jul 31, 2026	CSTLChief Commercial Officer	Open-market saleCode S · direct	8,149	$28.84	$235K@ $28.84	89,886	Form 4
May 21, 2026	CSTLChief Commercial Officer	Option exerciseCode M · direct	11,210	$3.38	$38K@ $3.38	98,035	Form 4
Mar 12, 2026	CSTLChief Commercial Officer	Open-market saleCode S · direct	20,863	$25.24	$527K@ $25.24	86,825	Form 4
Mar 4, 2026	CSTLChief Commercial Officer	Option exerciseCode M · direct	11,960	—	—	35,878	Form 4
Mar 4, 2026	CSTLChief Commercial Officer	Option exerciseCode M · direct	13,811	—	—	27,621	Form 4
Mar 4, 2026	CSTLChief Commercial Officer	Shares withheld for tax or exercise priceCode F · direct	10,399	$28.17	$293K@ $28.17	107,688	Form 4
Mar 4, 2026	CSTLChief Commercial Officer	Option exerciseCode M · direct	25,771	—	—	118,087	Form 4
Mar 3, 2026	CSTLChief Commercial Officer	Grant or awardCode A · direct	48,367	—	—	48,367	Form 4
Mar 3, 2026	CSTLChief Commercial Officer	Shares withheld for tax or exercise priceCode F · direct	3,716	$27.57	$102K@ $27.57	92,316	Form 4
Jan 12, 2026	CSTLChief Commercial Officer	Grant or awardCode A · direct	9,207	—	—	96,032	Form 4
Dec 11, 2025	CSTLChief Commercial Officer	Open-market saleCode S · direct	13,200	$37.48	$495K@ $37.48	86,825	Form 4
Dec 10, 2025	CSTLChief Commercial Officer	Shares withheld for tax or exercise priceCode F · direct	2,490	$38.02	$95K@ $38.02	100,025	Form 4
Dec 10, 2025	CSTLChief Commercial Officer	Option exerciseCode M · direct	6,170	—	—	102,515	Form 4
Dec 9, 2025	CSTLChief Commercial Officer	Shares withheld for tax or exercise priceCode F · direct	6,441	$38.25	$246K@ $38.25	96,345	Form 4
Dec 9, 2025	CSTLChief Commercial Officer	Option exerciseCode M · direct	15,961	—	—	102,786	Form 4
Nov 24, 2025	CSTLChief Commercial Officer	Open-market saleCode S · direct	1,301	$38.39	$50K@ $38.39	77,694	Form 4
Nov 20, 2025	CSTLChief Commercial Officer	Option exerciseCode M · direct	4,693	$3.38	$16K@ $3.38	89,288	Form 4

How this page is built

Every row comes from a Form 4 filed with the SEC, which officers, directors and holders of more than 10% of a company’s stock must file within two business days of a trade. Transactions are grouped by the reporting owner’s name as filed (spacing, capitals and punctuation ignored); two different people filing under an identical name would appear together, and one person filing under two spellings appears on two pages.

Open-market totals count code P purchases and code S sales over the last 24 months. The same trade reported on more than one filing is counted once; when another owner (for example a fund and its general partner) reports the identical trade, they are listed beside it. Holdings are the shares owned after the latest purchase, sale, gift or tax-withholding line, shown separately for direct and indirect ownership; an indirect figure is one holding line, not a total across every trust or entity.

This page describes what was filed with the SEC; it is not investment advice or a recommendation to buy or sell any security.