CASTLE BIOSCIENCES INC (CSTL) Stock Ownership

NASDAQ:CSTL • US14843C1053

Current stock price

25.56 USD
+0.24 (+0.95%)
At close:
25.56 USD
0 (0%)
After Hours:

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
Float28.45M
Float Short Interest Percentage4.78%
Owners (insider)2.74%
Owners (institutional)91.81%
Owners (insider) change0.69%
Owners (institutional) change4.64%
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 5M 10M 15M 20M 25M
CSTL Historical Insider Transactions ChartCSTL Historical Insider Buy and Sell Transactions ChartCSTL Historical Insider Transactions Apr 2025 May 2025 Jun 2025 Jul 2025 Aug 2025 Sep 2025 Oct 2025 Nov 2025 Dec 2025 Jan 2026 Feb 2026 Mar 2026 0 50K -50K
Date Name Type Shares Price Amount
Mar 11, 2026 MAETZOLD DEREK J Option Excercise 6226 2.39 $ 14,880.14
Mar 11, 2026 MAETZOLD DEREK J Open Market Sale 44125 25.67 $ 1,132,821.06
Mar 5, 2026 Stokes Frank Open Market Sale 6001 27.98 $ 167,907.98
Mar 5, 2026 Cole G Bradley Option Excercise 4748 3.38 $ 16,048.24
Mar 5, 2026 Cole G Bradley Open Market Sale 7403 28.47 $ 210,727.17
Mar 4, 2026 Stokes Frank Option Excercise 27946 0.46 $ 12,844.00
Mar 4, 2026 Juvenal Tobin W Option Excercise 25771 $ 0.00
Mar 4, 2026 Oelschlager Kristen M Option Excercise 25771 $ 0.00
Mar 4, 2026 MAETZOLD DEREK J Option Excercise 59097 $ 0.00
Mar 3, 2026 Stokes Frank Open Market Sale 7000 27.44 $ 192,073.00
Mar 3, 2026 Stokes Frank Option Excercise 14343 28.02 $ 401,875.71
Mar 3, 2026 Juvenal Tobin W Option Excercise 14115 28.01 $ 395,389.95
Mar 3, 2026 Oelschlager Kristen M Option Excercise 9219 28.01 $ 258,243.03
Mar 3, 2026 MAETZOLD DEREK J Option Excercise 36974 27.86 $ 1,030,131.78
Feb 3, 2026 MAETZOLD DEREK J Open Market Sale 4017 39.52 $ 158,756.92
Jan 12, 2026 MAETZOLD DEREK J Grant 62219 0.00 $ 0.00
Jan 12, 2026 Oelschlager Kristen M Grant 9207 0.00 $ 0.00
Jan 12, 2026 Juvenal Tobin W Grant 9207 0.00 $ 0.00
Jan 12, 2026 Stokes Frank Grant 8124 0.00 $ 0.00
Jan 5, 2026 MAETZOLD DEREK J Open Market Sale 4017 38.76 $ 155,693.56
Dec 17, 2025 MAETZOLD DEREK J Open Market Sale 509 40.04 $ 20,380.36
Dec 17, 2025 Oelschlager Kristen M Open Market Sale 14888 39.31 $ 585,291.94
Dec 15, 2025 MAETZOLD DEREK J Open Market Sale 32346 38.69 $ 1,251,399.69
Dec 11, 2025 Juvenal Tobin W Open Market Sale 13200 37.48 $ 494,736.00
Dec 11, 2025 Stokes Frank Open Market Sale 4496 37.45 $ 168,375.20
Dec 9, 2025 Stokes Frank Option Excercise 20786 $ 0.00
Dec 9, 2025 Stokes Frank Option Excercise 9292 38.18 $ 354,784.66
Dec 9, 2025 Juvenal Tobin W Option Excercise 22131 $ 0.00
Dec 9, 2025 Juvenal Tobin W Option Excercise 8931 38.19 $ 341,038.05
Dec 9, 2025 Oelschlager Kristen M Option Excercise 22131 $ 0.00
Dec 9, 2025 Oelschlager Kristen M Option Excercise 7243 38.17 $ 276,457.79
Dec 4, 2025 MAETZOLD DEREK J Open Market Sale 1339 40.03 $ 53,600.17
Dec 2, 2025 MAETZOLD DEREK J Open Market Sale 2678 39.23 $ 105,057.94
Nov 26, 2025 MAETZOLD DEREK J Open Market Sale 4258 40.09 $ 170,703.22
Nov 25, 2025 MAETZOLD DEREK J Open Market Sale 5115 40.05 $ 204,850.64
Nov 20, 2025 Juvenal Tobin W Option Excercise 4693 3.38 $ 15,862.34
Nov 20, 2025 Juvenal Tobin W Open Market Sale 4693 35.58 $ 166,976.94
Nov 18, 2025 MAETZOLD DEREK J Open Market Sale 2678 34.02 $ 91,105.56
Nov 11, 2025 Stokes Frank Open Market Sale 5388 35.08 $ 189,011.04
Nov 11, 2025 Juvenal Tobin W Open Market Sale 700 35.39 $ 24,775.00
Nov 11, 2025 Oelschlager Kristen M Open Market Sale 18932 35.10 $ 664,513.20
Nov 11, 2025 Juvenal Tobin W Option Excercise 700 3.38 $ 2,366.00
Nov 11, 2025 Juvenal Tobin W Open Market Sale 700 35.39 $ 24,775.00
Nov 4, 2025 MAETZOLD DEREK J Open Market Sale 9373 30.84 $ 289,078.86
Oct 20, 2025 MAETZOLD DEREK J Open Market Sale 1339 22.44 $ 30,047.16
Oct 2, 2025 MAETZOLD DEREK J Open Market Sale 1339 22.58 $ 30,234.62
Sep 17, 2025 MAETZOLD DEREK J Open Market Sale 1339 21.97 $ 29,419.17
Sep 2, 2025 MAETZOLD DEREK J Open Market Sale 1339 23.93 $ 32,042.27
Aug 27, 2025 Oelschlager Kristen M Open Market Sale 12677 22.02 $ 279,134.86
Aug 27, 2025 Oelschlager Kristen M Open Market Sale 18007 21.69 $ 390,571.83
Aug 15, 2025 MAETZOLD DEREK J Open Market Sale 1339 20.04 $ 26,833.56
Aug 13, 2025 MAETZOLD DEREK J Open Market Sale 43019 19.50 $ 839,042.58
Aug 8, 2025 Oelschlager Kristen M Option Excercise 10640 0.00 $ 0.00
Aug 8, 2025 Oelschlager Kristen M Option Excercise 2804 19.36 $ 54,285.44
Aug 8, 2025 Juvenal Tobin W Option Excercise 10640 0.00 $ 0.00
Aug 8, 2025 Juvenal Tobin W Option Excercise 4294 19.36 $ 83,131.84
Aug 8, 2025 MAETZOLD DEREK J Option Excercise 66991 0.00 $ 0.00
Aug 8, 2025 MAETZOLD DEREK J Option Excercise 23972 19.36 $ 464,097.92
Aug 8, 2025 Stokes Frank Option Excercise 9744 0.00 $ 0.00
Aug 8, 2025 Stokes Frank Option Excercise 4356 19.36 $ 84,332.16
Jun 27, 2025 MAETZOLD DEREK J Open Market Sale 22576 20.30 $ 458,292.80
May 21, 2025 Olson Tiffany Option Excercise 8673 $ 0.00
May 21, 2025 Harrison Miles Option Excercise 8673 $ 0.00
May 21, 2025 BRADBURY DANIEL Option Excercise 8673 $ 0.00
May 21, 2025 Cotton Rodney Option Excercise 8673 $ 0.00
May 21, 2025 Caple Kim Option Excercise 8673 $ 0.00
May 21, 2025 Goldberg Ellen Option Excercise 8673 $ 0.00
May 21, 2025 Cole G Bradley Option Excercise 8673 $ 0.00
Apr 21, 2025 MAETZOLD DEREK J Open Market Sale 5644 21.52 $ 121,447.59
Apr 9, 2025 MAETZOLD DEREK J Open Market Sale 5644 20.19 $ 113,931.95
Mar 26, 2025 MAETZOLD DEREK J Open Market Sale 5644 20.30 $ 114,573.20
Mar 26, 2025 Cotton Rodney Option Excercise 5329 $ 0.00