Form 4 for CSTL CASTLE BIOSCIENCES INC
Accepted 2025-03-06 00:00:00 ET · period of report 2025-03-04 · accession 0001447362-25-000038 · SEC index · Original document
Summary rows
Aggregated the way they appear in lists: one row per insider, transaction code and security table.
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| DMI | 2025-03-06 | 2025-03-04 | CSTL | MAETZOLD DEREK J | Pres, Chief Exec. Off, Dir | S - Sale+OE | $20.86 | -4,440 | 69.1K | -6% | -$92.6K |
| D | 2025-03-06 | 2025-03-04 | CSTL | MAETZOLD DEREK J | Pres, Chief Exec. Off, Dir | M - OptEx | — | +31.1K | 111.9K | +38% | — |
| D | 2025-03-06 | 2025-03-04 | CSTL | MAETZOLD DEREK J | Pres, Chief Exec. Off, Dir | S - Sale+OE | $20.86 | -1,247 | 103.1K | -1% | -$26.0K |
| D | 2025-03-06 | 2025-03-04 | CSTL | MAETZOLD DEREK J | Pres, Chief Exec. Off, Dir | F - Tax | $22.23 | -7,576 | 104.4K | -7% | -$168.4K |
| D | 2025-03-06 | 2025-03-04 | CSTL | MAETZOLD DEREK J | Pres, Chief Exec. Off, Dir | A - Grant | $0.00 | +111.9K | 111.9K | New | $0 |
| D | 2025-03-06 | 2025-03-04 | CSTL | MAETZOLD DEREK J | Pres, Chief Exec. Off, Dir | M - OptEx | $0.00 | -31.1K | 93.3K | -25% | $0 |
Purchase Sale Sale after option exercise All abbreviations
Every reported transaction
| # | Table | Security | Date | Code | A/D | Shares | Price | Owned after | Own | Exercise / expiry | Underlying | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Common | Common Stock | 2025-03-04 | S | D | 169 | $20.86 | 4,935 | I | — | — | (F3) This transaction was executed in multiple trades at prices ranging from $20.565 to $21.130, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected. |
| 2 | Common | Common Stock | 2025-03-04 | S | D | 169 | $20.86 | 4,935 | I | — | — | (F3) This transaction was executed in multiple trades at prices ranging from $20.565 to $21.130, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected. |
| 3 | Common | Common Stock | 2025-03-04 | S | D | 169 | $20.86 | 4,935 | I | — | — | (F3) This transaction was executed in multiple trades at prices ranging from $20.565 to $21.130, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected. |
| 4 | Common | Common Stock | 2025-03-04 | M | A | 31,109 | — | 111,927 | D By The Maetzold Descendants 2020 Trust | — | — | (F1) Each Restricted Stock Unit ("RSU") represents the right to receive one share of the Issuer's Common Stock. (F4) Held by The Maetzold Descendants 2020 Trust of which the Reporting Person's spouse is the trustee and the Reporting Person's spouse and their children are beneficiaries. |
| 5 | Common | Common Stock | 2025-03-04 | S | D | 172 | $20.86 | 4,938 | I By The Maetzold 2018 Remainder Trust FBO Peter Douglas Maetzold | — | — | (F3) This transaction was executed in multiple trades at prices ranging from $20.565 to $21.130, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected. (F9) Held by The Maetzold 2018 Remainder Trust FBO Peter Douglas Maetzold of which the Reporting Person is the trustee and his child is the beneficiary. |
| 6 | Common | Common Stock | 2025-03-04 | S | D | 1,739 | $20.86 | 58,834 | I By The Maetzold 2018 Remainder Trust FBO John Derek Maetzold | — | — | (F3) This transaction was executed in multiple trades at prices ranging from $20.565 to $21.130, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected. (F8) Held by The Maetzold 2018 Remainder Trust FBO John Derek Maetzold of which the Reporting Person is the trustee and his child is the beneficiary. |
| 7 | Common | Common Stock | 2025-03-04 | S | D | 2,022 | $20.86 | 69,059 | I By The Maetzold 2018 Remainder Trust FBO Hannah Elizabeth Maetzold | — | — | (F3) This transaction was executed in multiple trades at prices ranging from $20.565 to $21.130, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected. (F7) Held by The Maetzold 2018 Remainder Trust FBO Hannah Elizabeth Maetzold of which the Reporting Person is the trustee and his child is the beneficiary. |
| 8 | Common | Common Stock | 2025-03-04 | S | D | 1,247 | $20.86 | 103,104 | D By The Maetzold 2018 Remainder Trust FBO Emily Carol Kirk | — | — | (F3) This transaction was executed in multiple trades at prices ranging from $20.565 to $21.130, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected. (F6) Held by The Maetzold 2018 Remainder Trust FBO Emily Carol Kirk of which the Reporting Person is the trustee and his child is the beneficiary. |
| 9 | Common | Common Stock | 2025-03-04 | F | D | 7,576 | $22.23 | 104,351 | D By Derek Maetzold 2020 Irrevocable Trust | — | — | (F5) Held by Derek Maetzold 2020 Irrevocable Trust of which the Reporting Person is the trustee and his children are beneficiaries. |
| 10 | Derivative | Restricted Stock Units | 2025-03-04 | A | A | 111,948 | $0.00 | 111,948 | D | — · — to — | 111,948 Common Stock | (F1) Each Restricted Stock Unit ("RSU") represents the right to receive one share of the Issuer's Common Stock. (F12) The RSU's vest in four equal annual installments beginning on March 04, 2026. |
| 11 | Derivative | Restricted Stock Units | 2025-03-04 | M | D | 31,109 | $0.00 | 93,328 | D | — · — to — | 31,109 Common Stock | (F1) Each Restricted Stock Unit ("RSU") represents the right to receive one share of the Issuer's Common Stock. (F13) On March 4, 2024, the Reporting Person was granted 124,437 RSUs which vest in four equal installments beginning on March 4, 2025. |