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Buy Day today: Good (62) Broad market participation · no major macro event

Insider Trading

Current insider transactions (SEC Form 4) — buys and sells by officers, directors, and major shareholders.

All Recent Buys Recent Sells
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A compact market overview — not investment advice. Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q).
Ticker Insider Title Date Transaction Price ($) Shares Value ($) SEC Form 4
CSTL Juvenal Tobin W Chief Commercial Officer 09/15/2026 Verkauf 35.14 3,294 115,758 Form 4
CSTL Juvenal Tobin W Chief Commercial Officer 09/14/2026 Verkauf 32.32 3,306 106,863 Form 4
CSTL Maetzold Derek J Pres. & Chief Exec. Officer 09/11/2026 Verkauf 32.78 71 2,327 Form 4
CSTL Maetzold Derek J Pres. & Chief Exec. Officer 09/11/2026 Verkauf 32.78 83 2,721 Form 4
CSTL Maetzold Derek J Pres. & Chief Exec. Officer 09/11/2026 Verkauf 32.78 223 7,310 Form 4
CSTL Maetzold Derek J Pres. & Chief Exec. Officer 09/11/2026 Verkauf 32.00 2,656 84,992 Form 4
CSTL Maetzold Derek J Pres. & Chief Exec. Officer 09/11/2026 Verkauf 32.00 3,124 99,968 Form 4
CSTL Maetzold Derek J Pres. & Chief Exec. Officer 09/11/2026 Verkauf 32.00 8,361 267,552 Form 4
CSTL Maetzold Derek J Pres. & Chief Exec. Officer 09/11/2026 Optionsausübung 2.39 8,584 20,516 Form 4
CSTL Oelschlager Kristen M Chief Operating Officer 09/01/2026 Verkauf 34.02 200 6,804 Form 4
CSTL Oelschlager Kristen M Chief Operating Officer 09/01/2026 Verkauf 33.36 3,952 131,839 Form 4
CSTL Oelschlager Kristen M Chief Operating Officer 09/01/2026 Optionsausübung 3.38 4,152 14,034 Form 4
CSTL Juvenal Tobin W Chief Commercial Officer 08/31/2026 Verkauf 32.81 1,730 56,761 Form 4
CSTL Maetzold Derek J Pres. & Chief Exec. Officer 08/28/2026 Verkauf 33.88 21 711 Form 4
CSTL Maetzold Derek J Pres. & Chief Exec. Officer 08/28/2026 Verkauf 33.88 177 5,997 Form 4
CSTL Maetzold Derek J Pres. & Chief Exec. Officer 08/28/2026 Verkauf 33.88 209 7,081 Form 4
CSTL Maetzold Derek J Pres. & Chief Exec. Officer 08/28/2026 Verkauf 33.88 956 32,389 Form 4
CSTL Maetzold Derek J Pres. & Chief Exec. Officer 08/28/2026 Verkauf 33.14 257 8,517 Form 4
CSTL Maetzold Derek J Pres. & Chief Exec. Officer 08/28/2026 Verkauf 33.14 2,129 70,555 Form 4
CSTL Maetzold Derek J Pres. & Chief Exec. Officer 08/28/2026 Verkauf 33.14 2,505 83,016 Form 4
CSTL Maetzold Derek J Pres. & Chief Exec. Officer 08/28/2026 Verkauf 33.14 11,472 380,182 Form 4
CSTL Maetzold Derek J Pres. & Chief Exec. Officer 08/28/2026 Optionsausübung 2.39 12,428 29,703 Form 4
CSTL Juvenal Tobin W Chief Commercial Officer 08/25/2026 Verkauf 35.04 9,050 317,112 Form 4
CSTL Oelschlager Kristen M Chief Operating Officer 08/25/2026 Verkauf 34.64 5,223 180,920 Form 4
CSTL Oelschlager Kristen M Chief Operating Officer 08/25/2026 Verkauf 34.26 7,161 245,357 Form 4
CSTL Oelschlager Kristen M Chief Operating Officer 08/24/2026 Verkauf 33.69 12,218 411,588 Form 4
CSTL Juvenal Tobin W Chief Commercial Officer 08/17/2026 Verkauf 29.59 1,730 51,191 Form 4
CSTL Stokes Frank Chief Financial Officer 08/14/2026 Verkauf 29.77 24,908 741,511 Form 4
CSTL Maetzold Derek J Pres. & Chief Exec. Officer 08/14/2026 Verkauf 30.02 278 8,346 Form 4
CSTL Maetzold Derek J Pres. & Chief Exec. Officer 08/14/2026 Verkauf 30.02 2,306 69,226 Form 4
CSTL Maetzold Derek J Pres. & Chief Exec. Officer 08/14/2026 Verkauf 30.02 2,714 81,474 Form 4
CSTL Maetzold Derek J Pres. & Chief Exec. Officer 08/14/2026 Verkauf 30.02 1,100 33,022 Form 4
CSTL Maetzold Derek J Pres. & Chief Exec. Officer 08/14/2026 Optionsausübung 2.39 1,100 2,629 Form 4
CSTL Maetzold Derek J Pres. & Chief Exec. Officer 08/05/2026 Verkauf 30.68 473 14,512 Form 4
CSTL Maetzold Derek J Pres. & Chief Exec. Officer 08/05/2026 Verkauf 30.68 556 17,059 Form 4
CSTL Maetzold Derek J Pres. & Chief Exec. Officer 08/05/2026 Verkauf 30.68 2,546 78,114 Form 4
CSTL Maetzold Derek J Pres. & Chief Exec. Officer 08/05/2026 Optionsausübung 2.39 2,546 6,085 Form 4
CSTL Maetzold Derek J Pres. & Chief Exec. Officer 08/04/2026 Verkauf 31.34 4,063 127,318 Form 4
CSTL Maetzold Derek J Pres. & Chief Exec. Officer 08/04/2026 Verkauf 31.34 4,782 149,849 Form 4
CSTL Maetzold Derek J Pres. & Chief Exec. Officer 08/04/2026 Verkauf 31.34 11,935 373,995 Form 4
CSTL Maetzold Derek J Pres. & Chief Exec. Officer 08/04/2026 Verkauf 30.79 2,866 88,238 Form 4
CSTL Maetzold Derek J Pres. & Chief Exec. Officer 08/04/2026 Verkauf 30.79 3,374 103,879 Form 4
CSTL Maetzold Derek J Pres. & Chief Exec. Officer 08/04/2026 Verkauf 30.79 8,421 259,266 Form 4
CSTL Maetzold Derek J Pres. & Chief Exec. Officer 08/04/2026 Optionsausübung 2.39 20,356 48,651 Form 4
CSTL Oelschlager Kristen M Chief Operating Officer 08/03/2026 Verkauf 30.62 1,100 33,682 Form 4
CSTL Oelschlager Kristen M Chief Operating Officer 08/03/2026 Verkauf 30.00 4,486 134,580 Form 4
CSTL Oelschlager Kristen M Chief Operating Officer 08/03/2026 Verkauf 29.12 3,000 87,360 Form 4
CSTL Juvenal Tobin W Chief Commercial Officer 08/03/2026 Verkauf 28.25 1,730 48,873 Form 4
CSTL Maetzold Derek J Pres. & Chief Exec. Officer 08/03/2026 Verkauf 30.35 3,597 109,180 Form 4
CSTL Maetzold Derek J Pres. & Chief Exec. Officer 08/03/2026 Verkauf 30.35 4,232 128,454 Form 4
CSTL Maetzold Derek J Pres. & Chief Exec. Officer 08/03/2026 Verkauf 30.35 10,664 323,684 Form 4
CSTL Maetzold Derek J Pres. & Chief Exec. Officer 08/03/2026 Optionsausübung 2.39 10,664 25,487 Form 4
CSTL Juvenal Tobin W Chief Commercial Officer 07/31/2026 Verkauf 30.26 1,891 57,229 Form 4
CSTL Juvenal Tobin W Chief Commercial Officer 07/31/2026 Verkauf 29.58 7,270 215,039 Form 4
CSTL Juvenal Tobin W Chief Commercial Officer 07/31/2026 Verkauf 28.84 8,149 235,033 Form 4
CSTL Maetzold Derek J Pres. & Chief Exec. Officer 07/31/2026 Verkauf 30.15 1,690 50,957 Form 4
CSTL Maetzold Derek J Pres. & Chief Exec. Officer 07/31/2026 Verkauf 30.15 1,983 59,791 Form 4
CSTL Maetzold Derek J Pres. & Chief Exec. Officer 07/31/2026 Verkauf 30.15 6,480 195,385 Form 4
CSTL Maetzold Derek J Pres. & Chief Exec. Officer 07/31/2026 Optionsausübung 2.39 6,480 15,487 Form 4
CSTL Maetzold Derek J Pres. & Chief Exec. Officer 07/27/2026 Verkauf 25.06 10 251 Form 4

A compact market overview — not investment advice. Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q).

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