Derek J. Maetzold
Known title: Pres. & Chief Exec. OfficerCIK: 0001239501
Associated companies
Transaction History
| CSTL | ▲ Buy | Option Exercise | 8,580 | $21K | 9/21/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 8,580 | $303K | 9/21/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 2,718 | $96K | 9/21/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 3,198 | $113K | 9/21/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 3,124 | $100K | 9/11/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 223 | $7K | 9/11/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 71 | $2K | 9/11/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 8,361 | $268K | 9/11/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 2,656 | $85K | 9/11/2026 | View on chart |
| CSTL | ▲ Buy | Option Exercise | 8,584 | $21K | 9/11/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 83 | $3K | 9/11/2026 | View on chart |
| CSTL | ▲ Buy | Option Exercise | 12,428 | $30K | 8/28/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 21 | $711 | 8/28/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 2,505 | $83K | 8/28/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 21 | $711 | 8/28/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 11,472 | $380K | 8/28/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 177 | $6K | 8/28/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 257 | $9K | 8/28/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 209 | $7K | 8/28/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 956 | $32K | 8/28/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 21 | $711 | 8/28/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 257 | $9K | 8/28/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 257 | $9K | 8/28/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 257 | $9K | 8/28/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 2,129 | $71K | 8/28/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 21 | $711 | 8/28/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 278 | $8K | 8/14/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 2,714 | $81K | 8/14/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 2,306 | $69K | 8/14/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 1,100 | $33K | 8/14/2026 | View on chart |
| CSTL | ▲ Buy | Option Exercise | 1,100 | $3K | 8/14/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 278 | $8K | 8/14/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 278 | $8K | 8/14/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 278 | $8K | 8/14/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 473 | $15K | 8/5/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 556 | $17K | 8/5/2026 | View on chart |
| CSTL | ▲ Buy | Option Exercise | 2,546 | $6K | 8/5/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 2,546 | $78K | 8/5/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 4,782 | $150K | 8/4/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 4,063 | $127K | 8/4/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 8,421 | $259K | 8/4/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 11,935 | $374K | 8/4/2026 | View on chart |
| CSTL | ▲ Buy | Option Exercise | 20,356 | $49K | 8/4/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 3,374 | $104K | 8/4/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 2,866 | $88K | 8/4/2026 | View on chart |
| CSTL | ▲ Buy | Option Exercise | 10,664 | $25K | 8/3/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 4,232 | $128K | 8/3/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 3,597 | $109K | 8/3/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 10,664 | $324K | 8/3/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 6,480 | $195K | 7/31/2026 | View on chart |
| CSTL | ▲ Buy | Option Exercise | 6,480 | $15K | 7/31/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 1,690 | $51K | 7/31/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 1,983 | $60K | 7/31/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 268 | $6K | 7/27/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 268 | $6K | 7/27/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 268 | $6K | 7/27/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 1,307 | $32K | 7/27/2026 | View on chart |
| CSTL | ▲ Buy | Option Exercise | 6,214 | $15K | 7/27/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 5,982 | $144K | 7/27/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 268 | $6K | 7/27/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 1,110 | $27K | 7/27/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 10 | $251 | 7/27/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 43 | $1K | 7/27/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 50 | $1K | 7/27/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 232 | $6K | 7/27/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 10 | $251 | 7/27/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 10 | $251 | 7/27/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 10 | $251 | 7/27/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 1,153 | $26K | 7/14/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 550 | $13K | 7/14/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 278 | $6K | 7/14/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 278 | $6K | 7/14/2026 | View on chart |
| CSTL | ▲ Buy | Option Exercise | 550 | $1K | 7/14/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 278 | $6K | 7/14/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 278 | $6K | 7/14/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 1,357 | $31K | 7/14/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 6,214 | $151K | 7/1/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 278 | $7K | 7/1/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 278 | $7K | 7/1/2026 | View on chart |
| CSTL | ▲ Buy | Option Exercise | 6,214 | $15K | 7/1/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 278 | $7K | 7/1/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 1,357 | $33K | 7/1/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 278 | $7K | 7/1/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 1,153 | $28K | 7/1/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 1,153 | $24K | 6/15/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 1,357 | $28K | 6/15/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 550 | $11K | 6/15/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 278 | $6K | 6/15/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 278 | $6K | 6/15/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 278 | $6K | 6/15/2026 | View on chart |
| CSTL | ▲ Buy | Option Exercise | 550 | $1K | 6/15/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 278 | $6K | 6/15/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 6,214 | $130K | 6/1/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 278 | $6K | 6/1/2026 | View on chart |
| CSTL | ▲ Buy | Option Exercise | 6,010 | $14K | 6/1/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 278 | $6K | 6/1/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 278 | $6K | 6/1/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 278 | $6K | 6/1/2026 | View on chart |
| CSTL | ▲ Buy | Option Exercise | 204 | $488 | 6/1/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 1,153 | $24K | 6/1/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 1,357 | $28K | 6/1/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 880 | $18K | 5/21/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 212 | $4K | 5/21/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 1,035 | $21K | 5/21/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 212 | $4K | 5/21/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 212 | $4K | 5/21/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 420 | $8K | 5/21/2026 | View on chart |
| CSTL | ▲ Buy | Option Exercise | 420 | $1K | 5/21/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 212 | $4K | 5/21/2026 | View on chart |
| CSTL | ▲ Buy | Option Exercise | 130 | $311 | 5/20/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 273 | $5K | 5/20/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 66 | $1K | 5/20/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 322 | $6K | 5/20/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 66 | $1K | 5/20/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 66 | $1K | 5/20/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 130 | $3K | 5/20/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 66 | $1K | 5/20/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 1,159 | $26K | 5/7/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 5,308 | $117K | 5/7/2026 | View on chart |
| CSTL | ▲ Buy | Option Exercise | 6,214 | $15K | 5/7/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 41 | $926 | 5/7/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 41 | $926 | 5/7/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 168 | $4K | 5/7/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 41 | $926 | 5/7/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 41 | $926 | 5/7/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 985 | $22K | 5/7/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 198 | $4K | 5/7/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 237 | $5K | 5/7/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 906 | $20K | 5/7/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 237 | $5K | 5/7/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 237 | $5K | 5/7/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 237 | $5K | 5/7/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 550 | $14K | 4/21/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 278 | $7K | 4/21/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 1,357 | $34K | 4/21/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 278 | $7K | 4/21/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 278 | $7K | 4/21/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 1,153 | $29K | 4/21/2026 | View on chart |
| CSTL | ▲ Buy | Option Exercise | 550 | $1K | 4/21/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 278 | $7K | 4/21/2026 | View on chart |
| CSTL | ▲ Buy | Option Exercise | 6,214 | $15K | 4/6/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 278 | $7K | 4/6/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 1,357 | $34K | 4/6/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 278 | $7K | 4/6/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 6,214 | $156K | 4/6/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 278 | $7K | 4/6/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 1,153 | $29K | 4/6/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 278 | $7K | 4/6/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 1,153 | $29K | 3/26/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 278 | $7K | 3/26/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 1,357 | $35K | 3/26/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 278 | $7K | 3/26/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 278 | $7K | 3/26/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 550 | $14K | 3/26/2026 | View on chart |
| CSTL | ▲ Buy | Option Exercise | 550 | $1K | 3/26/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 278 | $7K | 3/26/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 650 | $17K | 3/18/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 18,650 | $484K | 3/17/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 17,449 | $453K | 3/16/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 126 | $3K | 3/16/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 13,204 | $336K | 3/13/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 23,179 | $586K | 3/12/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 282 | $7K | 3/11/2026 | View on chart |
| CSTL | ▲ Buy | Option Exercise | 6,226 | $15K | 3/11/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 279 | $7K | 3/11/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 279 | $7K | 3/11/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 279 | $7K | 3/11/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 1,357 | $35K | 3/11/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 1,160 | $30K | 3/11/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 17,310 | $452K | 3/11/2026 | View on chart |
| CSTL | ▼ Sell | Tax Withholding | 17,931 | $505K | 3/4/2026 | View on chart |
| CSTL | ▲ Buy | Option Exercise | 59,097 | — | 3/4/2026 | View on chart |
| CSTL | ▼ Sell | Tax Withholding | 19,043 | $525K | 3/3/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 646 | $24K | 2/4/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 171 | $7K | 2/4/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 3,200 | $128K | 2/3/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 4,017 | $161K | 1/20/2026 | View on chart |
| CSTL | ▲ Buy | Grant | 62,219 | $0 | 1/12/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 1,339 | $54K | 1/6/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 2,678 | $102K | 1/5/2026 | View on chart |
| CSTL | ▼ Sell | Open Market | 830 | $33K | 12/22/2025 | View on chart |
| CSTL | ▼ Sell | Open Market | 509 | $20K | 12/17/2025 | View on chart |
| CSTL | ▼ Sell | Open Market | 12,821 | $494K | 12/16/2025 | View on chart |
| CSTL | ▼ Sell | Open Market | 18,513 | $717K | 12/15/2025 | View on chart |
| CSTL | ▼ Sell | Open Market | 1,012 | $40K | 12/15/2025 | View on chart |
| CSTL | ▼ Sell | Tax Withholding | 6,070 | $231K | 12/10/2025 | View on chart |
| CSTL | ▲ Buy | Option Exercise | 15,424 | — | 12/10/2025 | View on chart |
| CSTL | ▼ Sell | Tax Withholding | 13,181 | $504K | 12/9/2025 | View on chart |
| CSTL | ▲ Buy | Option Exercise | 33,495 | — | 12/9/2025 | View on chart |
| CSTL | ▼ Sell | Open Market | 1,339 | $54K | 12/4/2025 | View on chart |
| CSTL | ▼ Sell | Open Market | 2,678 | $105K | 12/2/2025 | View on chart |
| CSTL | ▼ Sell | Open Market | 4,258 | $171K | 11/26/2025 | View on chart |
| CSTL | ▼ Sell | Open Market | 5,115 | $205K | 11/25/2025 | View on chart |
| CSTL | ▼ Sell | Open Market | 2,678 | $91K | 11/18/2025 | View on chart |
| CSTL | ▼ Sell | Open Market | 2,678 | $85K | 11/5/2025 | View on chart |
| CSTL | ▼ Sell | Open Market | 6,458 | $196K | 11/4/2025 | View on chart |
| CSTL | ▼ Sell | Open Market | 237 | $7K | 11/4/2025 | View on chart |
| CSTL | ▼ Sell | Open Market | 1,339 | $30K | 10/20/2025 | View on chart |
| CSTL | ▼ Sell | Open Market | 1,339 | $30K | 10/2/2025 | View on chart |
| CSTL | ▼ Sell | Open Market | 1,339 | $29K | 9/17/2025 | View on chart |
AI Market Commentary
AI-generatedAll commentary →Synthesized from recent news and fundamentals/technical data -- not human analyst commentary or trader sentiment.
September 25, 2026
Castle Biosciences Publishes AD Molecular Testing Study, Opens New Lab
Castle Biosciences highlighted a new study that shows a strong need for molecular testing in atopic dermatitis, supporting its AdvanceAD‑Tx product. The company also announced a new laboratory and office facility in Scottsdale, Arizona, expanding its testing capabilities. These developments reinforce the company's focus on precision diagnostics for skin conditions.
Castle Biosciences Publishes AD Molecular Testing Study, Opens New Lab. Castle Biosciences highlighted a new study that shows a strong need for molecular testing in atopic dermatitis, supporting its AdvanceAD‑Tx product. The company also announced a new laboratory and office facility in Scottsdale, Arizona, expanding its testing capabilities. These developments reinforce the company's focus on precision diagnostics for skin conditions.