CASTLE BIOSCIENCES INC (CSTL) Stock Ownership

NASDAQ:CSTL • US14843C1053

Current stock price

23.53 USD
+0.4 (+1.73%)
Last:

CSTL Ownership information

CSTL Ownership Chart.CSTL Ownership Chart: showing Insider, Institutional ownership and shares available to the public.CSTL Ownership.InsiderInstitutionalPublic



Shares Outstanding29.73M
Float28.50M
Float Short Interest Percentage5.03%
Owners (insider)2.57%
Owners (institutional)91.7%
Owners (insider) change-2.4%
Owners (institutional) change-0.01%
CSTL Institutional Ownership HistoryCSTL Institutional Ownership HistoryCSTL Institutional Ownership History Sep 2021 Mar 2022 Sep 2022 Mar 2023 Sep 2023 Mar 2024 Sep 2024 Mar 2025 Sep 2025 Mar 2026 5M 10M 15M 20M 25M
CSTL Historical Insider Transactions ChartCSTL Historical Insider Buy and Sell Transactions ChartCSTL Historical Insider Transactions May 2025 Jun 2025 Jul 2025 Aug 2025 Sep 2025 Oct 2025 Nov 2025 Dec 2025 Jan 2026 Feb 2026 Mar 2026 Apr 2026 0 50K -50K -100K
DateNameTypeSharesPriceAmount
Apr 6, 2026MAETZOLD DEREK JOption Excercise62142.39$ 14,851.46
Apr 6, 2026MAETZOLD DEREK JOpen Market Sale983625.03$ 246,195.08
Mar 26, 2026MAETZOLD DEREK JOption Excercise5502.39$ 1,314.50
Mar 26, 2026MAETZOLD DEREK JOpen Market Sale417225.55$ 106,598.77
Mar 26, 2026Cotton RodneyOption Excercise5329$ 0.00
Mar 17, 2026MAETZOLD DEREK JOpen Market Sale1930025.91$ 500,098.00
Mar 13, 2026MAETZOLD DEREK JOpen Market Sale3077925.75$ 792,409.70
Mar 12, 2026Juvenal Tobin WOpen Market Sale2086325.24$ 526,582.12
Mar 11, 2026MAETZOLD DEREK JOption Excercise62262.39$ 14,880.14
Mar 11, 2026MAETZOLD DEREK JOpen Market Sale4412525.67$ 1,132,821.06
Mar 5, 2026Stokes FrankOpen Market Sale600127.98$ 167,907.98
Mar 5, 2026Cole G BradleyOption Excercise47483.38$ 16,048.24
Mar 5, 2026Cole G BradleyOpen Market Sale740328.47$ 210,727.17
Mar 4, 2026Stokes FrankOption Excercise279460.46$ 12,844.00
Mar 4, 2026Juvenal Tobin WOption Excercise25771$ 0.00
Mar 4, 2026Oelschlager Kristen MOption Excercise25771$ 0.00
Mar 4, 2026MAETZOLD DEREK JOption Excercise59097$ 0.00
Mar 3, 2026Stokes FrankOpen Market Sale700027.44$ 192,073.00
Mar 3, 2026Stokes FrankOption Excercise1434328.02$ 401,875.71
Mar 3, 2026Juvenal Tobin WOption Excercise1411528.01$ 395,389.95
Mar 3, 2026Oelschlager Kristen MOption Excercise921928.01$ 258,243.03
Mar 3, 2026MAETZOLD DEREK JOption Excercise3697427.86$ 1,030,131.78
Feb 3, 2026MAETZOLD DEREK JOpen Market Sale401739.52$ 158,756.92
Jan 12, 2026MAETZOLD DEREK JGrant622190.00$ 0.00
Jan 12, 2026Oelschlager Kristen MGrant92070.00$ 0.00
Jan 12, 2026Juvenal Tobin WGrant92070.00$ 0.00
Jan 12, 2026Stokes FrankGrant81240.00$ 0.00
Jan 5, 2026MAETZOLD DEREK JOpen Market Sale401738.76$ 155,693.56
Dec 17, 2025MAETZOLD DEREK JOpen Market Sale50940.04$ 20,380.36
Dec 17, 2025Oelschlager Kristen MOpen Market Sale1488839.31$ 585,291.94
Dec 15, 2025MAETZOLD DEREK JOpen Market Sale3234638.69$ 1,251,399.69
Dec 11, 2025Juvenal Tobin WOpen Market Sale1320037.48$ 494,736.00
Dec 11, 2025Stokes FrankOpen Market Sale449637.45$ 168,375.20
Dec 9, 2025Stokes FrankOption Excercise20786$ 0.00
Dec 9, 2025Stokes FrankOption Excercise929238.18$ 354,784.66
Dec 9, 2025Juvenal Tobin WOption Excercise22131$ 0.00
Dec 9, 2025Juvenal Tobin WOption Excercise893138.19$ 341,038.05
Dec 9, 2025Oelschlager Kristen MOption Excercise22131$ 0.00
Dec 9, 2025Oelschlager Kristen MOption Excercise724338.17$ 276,457.79
Dec 4, 2025MAETZOLD DEREK JOpen Market Sale133940.03$ 53,600.17
Dec 2, 2025MAETZOLD DEREK JOpen Market Sale267839.23$ 105,057.94
Nov 26, 2025MAETZOLD DEREK JOpen Market Sale425840.09$ 170,703.22
Nov 25, 2025MAETZOLD DEREK JOpen Market Sale511540.05$ 204,850.64
Nov 20, 2025Juvenal Tobin WOption Excercise46933.38$ 15,862.34
Nov 20, 2025Juvenal Tobin WOpen Market Sale469335.58$ 166,976.94
Nov 18, 2025MAETZOLD DEREK JOpen Market Sale267834.02$ 91,105.56
Nov 11, 2025Stokes FrankOpen Market Sale538835.08$ 189,011.04
Nov 11, 2025Juvenal Tobin WOpen Market Sale70035.39$ 24,775.00
Nov 11, 2025Oelschlager Kristen MOpen Market Sale1893235.10$ 664,513.20
Nov 11, 2025Juvenal Tobin WOption Excercise7003.38$ 2,366.00
Nov 11, 2025Juvenal Tobin WOpen Market Sale70035.39$ 24,775.00
Nov 4, 2025MAETZOLD DEREK JOpen Market Sale937330.84$ 289,078.86
Oct 20, 2025MAETZOLD DEREK JOpen Market Sale133922.44$ 30,047.16
Oct 2, 2025MAETZOLD DEREK JOpen Market Sale133922.58$ 30,234.62
Sep 17, 2025MAETZOLD DEREK JOpen Market Sale133921.97$ 29,419.17
Sep 2, 2025MAETZOLD DEREK JOpen Market Sale133923.93$ 32,042.27
Aug 27, 2025Oelschlager Kristen MOpen Market Sale1267722.02$ 279,134.86
Aug 27, 2025Oelschlager Kristen MOpen Market Sale1800721.69$ 390,571.83
Aug 15, 2025MAETZOLD DEREK JOpen Market Sale133920.04$ 26,833.56
Aug 13, 2025MAETZOLD DEREK JOpen Market Sale4301919.50$ 839,042.58
Aug 8, 2025Oelschlager Kristen MOption Excercise106400.00$ 0.00
Aug 8, 2025Oelschlager Kristen MOption Excercise280419.36$ 54,285.44
Aug 8, 2025Juvenal Tobin WOption Excercise106400.00$ 0.00
Aug 8, 2025Juvenal Tobin WOption Excercise429419.36$ 83,131.84
Aug 8, 2025MAETZOLD DEREK JOption Excercise669910.00$ 0.00
Aug 8, 2025MAETZOLD DEREK JOption Excercise2397219.36$ 464,097.92
Aug 8, 2025Stokes FrankOption Excercise97440.00$ 0.00
Aug 8, 2025Stokes FrankOption Excercise435619.36$ 84,332.16
Jun 27, 2025MAETZOLD DEREK JOpen Market Sale2257620.30$ 458,292.80
May 21, 2025Olson TiffanyOption Excercise8673$ 0.00
May 21, 2025Harrison MilesOption Excercise8673$ 0.00
May 21, 2025BRADBURY DANIELOption Excercise8673$ 0.00
May 21, 2025Cotton RodneyOption Excercise8673$ 0.00
May 21, 2025Caple KimOption Excercise8673$ 0.00
May 21, 2025Goldberg EllenOption Excercise8673$ 0.00
May 21, 2025Cole G BradleyOption Excercise8673$ 0.00
Apr 21, 2025MAETZOLD DEREK JOpen Market Sale564421.52$ 121,447.59