Castle Biosciences (CSTL) insider trading activity: Get Latest News Today

CSTL Stock Outstanding Shares

Making an investment decision in the stock market involves a certain amount of risk, so it's important to thoroughly review a company's stock before making any decisions. Stock float, number of short positions and outstanding shares are among the many factors an investor should take into account.

ShortableYes

OptionableYes

Short Percent Of Outstanding Shares6.48

Short Percent Of Float6.68

Shares Outstanding28.51M

Shares Float27.69M

Shares Short1.85M

Short Ratio4.57

6.68%

Short % of Float

6.48%

Short % of Shares Outstanding

Market Insider CSTL

Investors cannot turn a blind eye to insiders as well as institutional ownership. They need to follow insider trades to determine the direction the stock is likely to take.

Major Holders Summary

3.37% Percentage of Shares held by All Insiders

94.2% Percentage of Shares held by All Institutions

97.48% Percentage of Float held by Institutions

258

Number of Institutions Holding Shares

Institutional Ownership

About 94.2% of CSTL shares are held by financial institutions. PRINCIPAL FINANCIAL GROUP INC is the top corporate investor, holding 1.53M shares valued at $33.94M. A 5.67% stake in Castle Biosciences, Inc. is owned by the company. LOS ANGELES CAPITAL MANAGEMENT LLC owns 18.2K shares valued at $403.15K, which translates its holding of 0.07% of the stake in the company.

Date	Holder	% Stake	Shares Held	Total Value ($)	Shares	% Change in Portfolio
Mar 31, 2024	PRINCIPAL FINANCIAL GROUP INC	5.67%	1.53M	33.94M	-53.2K	-3.36%
Mar 31, 2024	LOS ANGELES CAPITAL MANAGEMENT LLC	0.07%	18.2K	403.15K	0	0
Mar 31, 2024	STATE OF WISCONSIN INVESTMENT BOARD	0.07%	17.64K	390.77K	-2.27K	-11.41%
Mar 31, 2024	VANGUARD GROUP INC	5.53%	1.49M	33.1M	32.7K	+2.24%
Mar 31, 2024	BELLEVUE GROUP AG	4.51%	1.22M	27.02M	-12.29K	-1.00%
Mar 31, 2024	PORTOLAN CAPITAL MANAGEMENT, LLC	3.86%	1.04M	23.11M	314.76K	+43.20%
Mar 31, 2024	DEERFIELD MANAGEMENT COMPANY, L.P. (SERIES C)	3.43%	928.02K	20.56M	-37.41K	-3.88%
Mar 31, 2024	SOLEUS CAPITAL MANAGEMENT, L.P.	2.68%	725.46K	16.07M	699.46K	+2,690.22%
Mar 31, 2024	CITADEL ADVISORS LLC	2.43%	655.77K	14.53M	327.02K	+99.47%
Mar 31, 2024	MORGAN STANLEY	2.41%	650.71K	14.41M	172.68K	+36.12%
Mar 31, 2024	STATE STREET CORP	2.24%	605.8K	13.42M	25.88K	+4.46%
Mar 31, 2024	GEODE CAPITAL MANAGEMENT, LLC	2.14%	578.53K	12.82M	12.42K	+2.19%
Mar 31, 2024	PALISADE CAPITAL MANAGEMENT, LP	2.02%	547.17K	12.12M	8.03K	+1.49%
Mar 31, 2024	KORNITZER CAPITAL MANAGEMENT INC /KS	2.01%	542.87K	12.02M	0	0
Mar 31, 2024	INTRINSIC EDGE CAPITAL MANAGEMENT LLC	0.55%	150K	3.32M	150K	+100.00%
Mar 31, 2024	NEXT CENTURY GROWTH INVESTORS LLC	0.81%	219.47K	4.86M	5.59K	+2.61%
Mar 31, 2024	RENAISSANCE TECHNOLOGIES LLC	0.76%	204.7K	4.53M	92.3K	+82.12%
Mar 31, 2024	NUVEEN ASSET MANAGEMENT, LLC	0.7%	189.63K	4.2M	7.15K	+3.92%
Mar 31, 2024	BANQUE PICTET & CIE SA	0.62%	166.88K	3.7M	-15.78K	-8.64%
Mar 31, 2024	INVENOMIC CAPITAL MANAGEMENT LP	0.62%	166.71K	3.69M	-5.1K	-2.97%
Mar 31, 2024	SCHONFELD STRATEGIC ADVISORS LLC	0.61%	165.44K	3.66M	4.14K	+2.57%
Mar 31, 2024	BANK OF AMERICA CORP /DE/	0.56%	151.17K	3.35M	12.59K	+9.08%
Mar 31, 2024	ALGERT GLOBAL LLC	0.54%	145.41K	3.22M	16.3K	+12.62%
Mar 31, 2024	ADVISORS CAPITAL MANAGEMENT, LLC	0.52%	141.12K	3.13M	19.23K	+15.77%
Mar 31, 2024	GOLDMAN SACHS GROUP INC	0.46%	124.67K	2.76M	44.28K	+55.09%
Mar 31, 2024	MARSHALL WACE, LLP	0.36%	97.93K	2.17M	53.03K	+118.11%
Mar 31, 2024	PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO	0.35%	93.44K	2.07M	-6.82K	-6.80%
Mar 31, 2024	TRITONPOINT WEALTH, LLC	0.34%	92.25K	2.04M	-2.11K	-2.23%
Mar 31, 2024	BANK OF NEW YORK MELLON CORP	0.31%	84.11K	1.86M	-9.2K	-9.86%
Mar 31, 2024	CUBIST SYSTEMATIC STRATEGIES, LLC	0.3%	81.74K	1.81M	11.53K	+16.42%
Mar 31, 2024	CONNOR, CLARK & LUNN INVESTMENT MANAGEMENT LTD.	0.29%	77.66K	1.72M	-10.91K	-12.32%
Mar 31, 2024	JPMORGAN CHASE & CO	0.28%	76.14K	1.69M	25.78K	+51.18%
Mar 31, 2024	ORION PORTFOLIO SOLUTIONS, LLC	0.25%	67.24K	1.49M	-2.5K	-3.58%
Mar 31, 2024	POLAR ASSET MANAGEMENT PARTNERS INC.	0.22%	60.8K	1.35M	7.6K	+14.29%
Mar 31, 2024	MILLRACE ASSET GROUP, INC.	0.18%	49.77K	1.1M	-29.14K	-36.93%
Mar 31, 2024	WASATCH ADVISORS LP	9.44%	2.55M	56.51M	-39.86K	-1.54%
Mar 31, 2024	JACOBS LEVY EQUITY MANAGEMENT, INC	1.97%	531.9K	11.78M	-4.89K	-0.91%
Mar 31, 2024	PARKMAN HEALTHCARE PARTNERS LLC	1.36%	367.41K	8.14M	10.25K	+2.87%
Mar 31, 2024	AMERIPRISE FINANCIAL INC	1.09%	295.33K	6.54M	15.6K	+5.58%
Mar 31, 2024	DEUTSCHE BANK AG\	0.97%	262.81K	5.82M	106.98K	+68.65%
Mar 31, 2024	MILLENNIUM MANAGEMENT LLC	0.92%	248.55K	5.51M	-467.8K	-65.30%
Mar 31, 2024	NORTHERN TRUST CORP	0.9%	244.39K	5.41M	-5.6K	-2.24%
Mar 31, 2024	NEW YORK STATE COMMON RETIREMENT FUND	0.85%	228.58K	5.06M	-8.55K	-3.60%
Mar 31, 2024	ACADIAN ASSET MANAGEMENT LLC	0.78%	210.82K	4.67M	119.44K	+130.71%
Mar 31, 2024	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	0.76%	204.94K	4.54M	-2.36K	-1.14%
Mar 31, 2024	UBS GROUP AG	0.2%	54.84K	1.21M	13.37K	+32.23%
Mar 31, 2024	GSA CAPITAL PARTNERS LLP	0.19%	52.45K	1.16M	4.35K	+9.05%
Mar 31, 2024	SWISS NATIONAL BANK	0.19%	50.2K	1.11M	0	0
Mar 31, 2024	DIMENSIONAL FUND ADVISORS LP	2.77%	749.26K	16.6M	85.38K	+12.86%
Mar 31, 2024	BLACKROCK INC.	9.6%	2.6M	57.49M	312.49K	+13.69%
Mar 31, 2024	GRANAHAN INVESTMENT MANAGEMENT, LLC	6.02%	1.63M	36.04M	-539.25K	-24.89%
Mar 31, 2024	ENVESTNET ASSET MANAGEMENT INC	0.17%	45.93K	1.02M	-4.1K	-8.20%
Mar 31, 2024	SUSQUEHANNA INTERNATIONAL GROUP, LLP	0.17%	45.9K	1.02M	45.9K	+100.00%
Mar 31, 2024	TREXQUANT INVESTMENT LP	0.17%	45K	996.68K	33.51K	+291.58%
Mar 31, 2024	HARBOR CAPITAL ADVISORS, INC.	0.15%	39.71K	879K	27.75K	+232.21%
Mar 31, 2024	RHUMBLINE ADVISERS	0.14%	38.91K	861.8K	1K	+2.64%
Mar 31, 2024	AMERICAN CENTURY COMPANIES INC	0.14%	37.92K	839.93K	11.21K	+41.97%
Mar 31, 2024	CREDIT SUISSE AG/	0.13%	35.81K	793.17K	1.76K	+5.17%
Mar 31, 2024	FRANKLIN RESOURCES INC	0.13%	35.5K	786.33K	35.5K	+100.00%
Mar 31, 2024	ABG INNOVATION CAPITAL PARTNERS III GP LTD	0.12%	33.63K	744.82K	-3.12K	-8.49%
Mar 31, 2024	ALLIANCEBERNSTEIN L.P.	0.12%	33.37K	739.15K	-11.32K	-25.33%
Mar 31, 2024	PERKINS CAPITAL MANAGEMENT INC	0.12%	32.14K	712K	0	0
Mar 31, 2024	RUSSELL INVESTMENTS GROUP, LTD.	0.12%	31.69K	702K	-290	-0.91%
Mar 31, 2024	SIMON QUICK ADVISORS, LLC	0.11%	29.06K	643.72K	0	0
Mar 31, 2024	INVESCO LTD.	0.1%	27.4K	606.82K	-4.76K	-14.80%
Mar 31, 2024	PARALLEL ADVISORS, LLC	0.1%	26.67K	590.7K	-300	-1.11%
Mar 31, 2024	KNIGHTS OF COLUMBUS ASSET ADVISORS LLC	0.09%	25.13K	556.7K	-81.13K	-76.35%
Mar 31, 2024	LEGAL & GENERAL GROUP PLC	0.09%	24.77K	548.68M	-50	-0.20%
Mar 31, 2024	NORDEN GROUP LLC	0.09%	24.67K	546.51K	24.67K	+100.00%
Mar 31, 2024	Y-INTERCEPT (HONG KONG) LTD	0.09%	24.6K	544.96K	14.01K	+132.26%
Mar 31, 2024	STRS OHIO	0.08%	22.7K	502K	-1.4K	-5.81%
Dec 31, 2023	NUVEEN ASSET MANAGEMENT, LLC	0.68%	182.47K	3.94M	6.19K	+3.51%
Dec 31, 2023	INVENOMIC CAPITAL MANAGEMENT LP	0.64%	171.81K	3.71M	-114.15K	-39.92%
Dec 31, 2023	SCHONFELD STRATEGIC ADVISORS LLC	0.6%	161.3K	3.48M	13.27K	+8.96%
Dec 31, 2023	DEUTSCHE BANK AG\	0.58%	155.83K	3.36M	141.79K	+1,010.06%
Dec 31, 2023	BANK OF AMERICA CORP /DE/	0.52%	138.58K	2.99M	95.86K	+224.36%
Dec 31, 2023	ALGERT GLOBAL LLC	0.48%	129.11K	2.79M	61.9K	+92.09%
Dec 31, 2023	ADVISORS CAPITAL MANAGEMENT, LLC	0.45%	121.89K	2.63M	5K	+4.28%
Dec 31, 2023	RENAISSANCE TECHNOLOGIES LLC	0.42%	112.4K	2.43M	5.6K	+5.24%
Dec 31, 2023	KNIGHTS OF COLUMBUS ASSET ADVISORS LLC	0.4%	106.26K	2.29M	52.92K	+99.21%
Dec 31, 2023	PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO	0.37%	100.25K	2.16M	0	0
Dec 31, 2023		0.35%	94.36K	2.04M	94.36K	+100.00%
Dec 31, 2023	BANK OF NEW YORK MELLON CORP	0.35%	93.31K	2.01M	12.17K	+14.99%
Dec 31, 2023	ACADIAN ASSET MANAGEMENT LLC	0.34%	91.38K	1.97M	91.38K	+100.00%
Dec 31, 2023	CONNOR, CLARK & LUNN INVESTMENT MANAGEMENT LTD.	0.33%	88.57K	1.91M	7.99K	+9.91%
Dec 31, 2023	GOLDMAN SACHS GROUP INC	0.3%	80.39K	1.73M	-71.36K	-47.03%
Dec 31, 2023	MILLRACE ASSET GROUP, INC.	0.29%	78.91K	1.7M	1.6K	+2.07%
Dec 31, 2023	CUBIST SYSTEMATIC STRATEGIES, LLC	0.26%	70.22K	1.52M	-66.32K	-48.57%
Dec 31, 2023	ORION PORTFOLIO SOLUTIONS, LLC	0.26%	69.73K	1.53M	-4.29K	-5.80%
Dec 31, 2023	POLAR ASSET MANAGEMENT PARTNERS INC.	0.2%	53.2K	1.15M	53.2K	+100.00%
Dec 31, 2023	D. E. SHAW & CO., INC.	0.2%	52.36K	1.13M	52.36K	+100.00%
Dec 31, 2023	JPMORGAN CHASE & CO	0.19%	50.37K	1.09M	-2.3K	-4.36%
Dec 31, 2023	SWISS NATIONAL BANK	0.19%	50.2K	1.08M	-5K	-9.06%
Dec 31, 2023	ENVESTNET ASSET MANAGEMENT INC	0.19%	50.03K	1.08M	-3.96K	-7.33%
Dec 31, 2023	GSA CAPITAL PARTNERS LLP	0.18%	48.1K	1.04M	-4.1K	-7.85%
Dec 31, 2023	MARSHALL WACE, LLP	0.17%	44.9K	968.94K	44.9K	+100.00%
Dec 31, 2023	WASATCH ADVISORS LP	9.66%	2.59M	55.91M	-189.79K	-6.83%
Dec 31, 2023	BLACKROCK INC.	8.51%	2.28M	49.27M	147.02K	+6.88%
Dec 31, 2023	GRANAHAN INVESTMENT MANAGEMENT, LLC	8.07%	2.17M	46.75M	-321.2K	-12.91%
Dec 31, 2023	PRINCIPAL FINANCIAL GROUP INC	5.91%	1.59M	34.22M	103.5K	+6.98%
Dec 31, 2023	VANGUARD GROUP INC	5.45%	1.46M	31.54M	22.09K	+1.53%
Dec 31, 2023	BELLEVUE GROUP AG	4.59%	1.23M	26.59M	4.35K	+0.35%
Dec 31, 2023	DEERFIELD MANAGEMENT COMPANY, L.P. (SERIES C)	3.6%	965.43K	20.83M	18.81K	+1.99%
Dec 31, 2023	PORTOLAN CAPITAL MANAGEMENT, LLC	2.72%	728.65K	15.72M	475.63K	+187.97%
Dec 31, 2023	MILLENNIUM MANAGEMENT LLC	2.67%	716.35K	15.46M	121.25K	+20.38%
Dec 31, 2023	DIMENSIONAL FUND ADVISORS LP	2.47%	663.88K	14.33M	108.48K	+19.53%
Dec 31, 2023	STATE STREET CORP	2.16%	579.92K	12.51M	14.75K	+2.61%
Dec 31, 2023	GEODE CAPITAL MANAGEMENT, LLC	2.11%	566.12K	12.22M	29.88K	+5.57%
Dec 31, 2023	KORNITZER CAPITAL MANAGEMENT INC /KS	2.02%	542.87K	11.72M	-105.35K	-16.25%
Dec 31, 2023	PALISADE CAPITAL MANAGEMENT, LP	2.01%	539.14K	11.63M	-63.13K	-10.48%
Dec 31, 2023	JACOBS LEVY EQUITY MANAGEMENT, INC	2%	536.79K	11.58M	-10.62K	-1.94%
Dec 31, 2023	MORGAN STANLEY	1.78%	478.04K	10.32M	439.39K	+1,136.96%
Dec 31, 2023	PARKMAN HEALTHCARE PARTNERS LLC	1.33%	357.16K	7.71M	132.56K	+59.02%
Dec 31, 2023	CITADEL ADVISORS LLC	1.23%	328.75K	7.09M	-189.31K	-36.54%
Dec 31, 2023	INTRINSIC EDGE CAPITAL MANAGEMENT LLC	1.22%	326.27K	7.04M	170K	+108.79%
Dec 31, 2023	AMERIPRISE FINANCIAL INC	1.04%	279.73K	6.04M	13.73K	+5.16%
Dec 31, 2023	NORTHERN TRUST CORP	0.93%	249.98K	5.39M	6.14K	+2.52%
Dec 31, 2023	NEW YORK STATE COMMON RETIREMENT FUND	0.88%	237.13K	5.12M	-8.74K	-3.56%
Dec 31, 2023	NEXT CENTURY GROWTH INVESTORS LLC	0.8%	213.89K	4.62M	213.89K	+100.00%
Dec 31, 2023	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	0.77%	207.3K	4.47M	6.31K	+3.14%
Dec 31, 2023	BANQUE PICTET & CIE SA	0.68%	182.66K	3.94M	-20.61K	-10.14%

CSTL Insiders

Among the CSTL insiders holding of 3.37% of the stake in company, OELSCHLAGER KRISTEN M, Chief Operating Officer, holds the largest shares of 134.84K. JUVENAL TOBIN W, Chief Commercial Officer, is the second largest CSTL insider with ownership of 69.94K shares. STOKES FRANK, Chief Financial Officer, stands third with possession of 35.32K shares of that stake.

Insiders	Designation	Shares Held
OELSCHLAGER KRISTEN M	Chief Operating Officer	134.84K
JUVENAL TOBIN W	Chief Commercial Officer	69.94K
STOKES FRANK	Chief Financial Officer	35.32K
MAETZOLD DEREK J	Pres. & Chief Exec. Officer	4.61K
BRADBURY DANIEL	director	0

Buying/Selling by Insiders

Date	Insider	Type	Cost	Shares	Value ($)	Shares Total
Mar 26, 2025	MAETZOLD DEREK J	SALE	20.30	165	3.35K	4.61K
Mar 10, 2025	MAETZOLD DEREK J	SALE	19.52	2.13K	41.57K	78.34K
Mar 07, 2025	MAETZOLD DEREK J	SALE	20.74	15	311.16	4.77K
Feb 20, 2025	STOKES FRANK	SALE	26.70	8.05K	214.83K	35.32K
Feb 05, 2025	BRADBURY DANIEL	SALE	28.17	1.43K	40.15K	0
Jan 13, 2025	MAETZOLD DEREK J	SALE	29.48	4	117.92	5.1K
Jan 07, 2025	MAETZOLD DEREK J	SALE	30.14	37	1.12K	5.25K
Jan 06, 2025	BRADBURY DANIEL	SALE	29.82	134	4K	1.43K
Jan 06, 2025	JUVENAL TOBIN W	SALE	30.00	2.23K	66.9K	69.94K
Jan 06, 2025	MAETZOLD DEREK J	SALE	30.18	262	7.91K	5.29K
Dec 17, 2024	MAETZOLD DEREK J	SALE	28.76	112	3.22K	84.76K
Dec 16, 2024	MAETZOLD DEREK J	SALE	28.83	11.06K	318.86K	94.13K
Dec 13, 2024	MAETZOLD DEREK J	SALE	29.16	37	1.08K	5.7K
Dec 05, 2024	MAETZOLD DEREK J	SALE	31.35	299	9.37K	5.85K
Dec 03, 2024	BRADBURY DANIEL	SALE	31.32	99	3.1K	2.85K
Nov 15, 2024	STOKES FRANK	SALE	30.40	800	24.32K	30.82K
Nov 12, 2024	MAETZOLD DEREK J	SALE	34.15	299	10.21K	6.15K
Nov 05, 2024	JUVENAL TOBIN W	SALE	35.56	3.51K	124.71K	54.18K
Nov 04, 2024	MAETZOLD DEREK J	SALE	33.16	5	165.78	6.45K
Nov 01, 2024	BRADBURY DANIEL	SALE	35.33	287	10.14K	4.28K
Nov 01, 2024	JUVENAL TOBIN W	SALE	35.39	3.1K	109.71K	54.18K
Oct 14, 2024	MAETZOLD DEREK J	SALE	32.27	299	9.65K	6.75K
Oct 08, 2024	MAETZOLD DEREK J	SALE	30.27	149	4.51K	7.05K
Oct 07, 2024	BRADBURY DANIEL	SALE	29.44	1.43K	41.96K	5.7K
Oct 04, 2024	MAETZOLD DEREK J	SALE	28.73	150	4.31K	7.2K
Sep 16, 2024	MAETZOLD DEREK J	SALE	30.97	299	9.26K	7.35K
Sep 11, 2024	MAETZOLD DEREK J	SALE	30.32	160	4.85K	7.65K
Sep 09, 2024	MAETZOLD DEREK J	SALE	29.46	150	4.42K	7.81K
Sep 05, 2024	BRADBURY DANIEL	SALE	29.02	1.43K	41.36K	7.13K
Sep 04, 2024	MAETZOLD DEREK J	SALE	30.02	49	1.47K	7.96K
Sep 03, 2024	MAETZOLD DEREK J	SALE	30.05	68	2.04K	8.01K
Sep 03, 2024	OELSCHLAGER KRISTEN M	SALE	29.97	1.25K	37.46K	134.84K
Aug 30, 2024	MAETZOLD DEREK J	SALE	30.10	53	1.6K	8.07K
Aug 29, 2024	MAETZOLD DEREK J	SALE	30.07	218	6.56K	8.13K
Aug 26, 2024	MAETZOLD DEREK J	SALE	30.05	14	420.69	8.34K
Aug 23, 2024	MAETZOLD DEREK J	SALE	30.09	169	5.09K	8.36K
Aug 12, 2024	BRADBURY DANIEL	SALE	26.65	1.43K	38.13K	8.55K
Aug 07, 2024	STOKES FRANK	SALE	26.13	5.4K	141.09K	30.82K
Aug 01, 2024	OELSCHLAGER KRISTEN M	SALE	23.77	4.23K	100.43K	132.84K
Jul 29, 2024	OELSCHLAGER KRISTEN M	SALE	22.06	2.79K	61.62K	145.83K
Jul 01, 2024	OELSCHLAGER KRISTEN M	SALE	21.22	2.79K	59.28K	148.62K
Jun 03, 2024	MAETZOLD DEREK J	SALE	23.98	6	143.87	8.53K
May 14, 2024	MAETZOLD DEREK J	SALE	24.95	46	1.15K	8.91K
May 06, 2024	MAETZOLD DEREK J	SALE	24.72	386	9.54K	9.3K
May 06, 2024	BRADBURY DANIEL	SALE	24.64	7.97K	196.31K	9.98K
Apr 23, 2024	MAETZOLD DEREK J	SALE	20.11	69	1.39K	9.68K
Apr 12, 2024	MAETZOLD DEREK J	SALE	20.35	317	6.45K	9.75K
Apr 08, 2024	BRADBURY DANIEL	SALE	20.45	819	16.75K	17.94K
Apr 05, 2024	BRADBURY DANIEL	SALE	20.86	4.02K	83.84K	18.76K
Apr 04, 2024	BRADBURY DANIEL	SALE	21.45	3.13K	67.03K	22.78K
Apr 03, 2024	MAETZOLD DEREK J	SALE	21.70	386	8.38K	10.07K
Mar 21, 2024	MAETZOLD DEREK J	SALE	20.70	12	248.4	10.46K
Mar 20, 2024	MAETZOLD DEREK J	SALE	20.27	374	7.58K	10.47K
Mar 07, 2024	MAETZOLD DEREK J	SALE	20.77	388	8.06K	10.84K
Mar 05, 2024	MAETZOLD DEREK J	SALE	21.41	4.13K	88.46K	74.47K
Mar 04, 2024	BRADBURY DANIEL	SALE	21.28	2.26K	48.14K	25.91K
Feb 07, 2024	BRADBURY DANIEL	SALE	23.20	708	16.43K	33.87K
Feb 06, 2024	BRADBURY DANIEL	SALE	23.63	3.36K	79.44K	34.58K
Feb 05, 2024	BRADBURY DANIEL	SALE	23.42	930	21.78K	37.94K
Jan 05, 2024	BRADBURY DANIEL	SALE	20.36	1.74K	35.45K	41.83K
Jan 04, 2024	BRADBURY DANIEL	SALE	20.40	6.22K	126.93K	43.57K
Dec 28, 2023	MAETZOLD DEREK J	SALE	22.17	3.95K	87.66K	64.08K
Dec 27, 2023	MAETZOLD DEREK J	SALE	21.90	119	2.61K	11.69K
Dec 26, 2023	MAETZOLD DEREK J	SALE	21.93	77	1.69K	11.81K
Dec 22, 2023	MAETZOLD DEREK J	SALE	21.96	78	1.71K	11.88K
Dec 21, 2023	MAETZOLD DEREK J	SALE	21.40	448	9.59K	93K
Dec 20, 2023	MAETZOLD DEREK J	SALE	21.05	5.2K	109.46K	97.52K
Dec 19, 2023	MAETZOLD DEREK J	SALE	20.84	5.72K	119.16K	102.72K
Dec 18, 2023	MAETZOLD DEREK J	SALE	20.27	5.72K	115.96K	108.44K
Dec 15, 2023	MAETZOLD DEREK J	SALE	20.21	3.71K	74.96K	114.16K
Dec 14, 2023	MAETZOLD DEREK J	SALE	20.86	8.87K	184.94K	118.15K
Dec 06, 2023	MAETZOLD DEREK J	SALE	20.02	15	300.3	100.21K
Dec 06, 2023	BRADBURY DANIEL	SALE	20.02	64	1.28K	75.02K
Dec 04, 2023	MAETZOLD DEREK J	SALE	20.08	435	8.73K	100.23K
Dec 04, 2023	BRADBURY DANIEL	SALE	20.08	1.38K	27.62K	75.08K
Dec 01, 2023	BRADBURY DANIEL	SALE	20.05	3.03K	60.67K	76.46K
Dec 01, 2023	MAETZOLD DEREK J	SALE	20.06	1.02K	20.46K	100.66K
Nov 30, 2023	MAETZOLD DEREK J	SALE	20.07	4.51K	90.52K	101.88K
Nov 30, 2023	BRADBURY DANIEL	SALE	20.08	7.31K	146.73K	79.48K
Nov 29, 2023	MAETZOLD DEREK J	SALE	20.13	5.74K	115.61K	106.39K
Nov 29, 2023	BRADBURY DANIEL	SALE	20.13	10.41K	209.42K	86.79K
Nov 24, 2023	BRADBURY DANIEL	SALE	20.02	480	9.61K	97.19K
Nov 24, 2023	MAETZOLD DEREK J	SALE	20.03	287	5.75K	112.13K
Nov 21, 2023	BRADBURY DANIEL	SALE	20.00	180	3.6K	97.67K
Nov 21, 2023	MAETZOLD DEREK J	SALE	20.01	758	15.17K	112.42K
Nov 20, 2023	MAETZOLD DEREK J	SALE	20.04	1.93K	38.6K	113.18K
Nov 20, 2023	BRADBURY DANIEL	SALE	20.04	3.45K	69.16K	97.85K
Sep 01, 2023	BRADBURY DANIEL	SALE	20.04	1.08K	21.68K	101.31K
Sep 01, 2023	MAETZOLD DEREK J	SALE	20.05	718	14.4K	115.1K
Aug 31, 2023	BRADBURY DANIEL	SALE	20.05	4.37K	87.67K	102.39K
Aug 31, 2023	MAETZOLD DEREK J	SALE	20.06	4.08K	81.92K	115.82K
Aug 30, 2023	MAETZOLD DEREK J	SALE	20.03	1.62K	32.49K	119.91K
Aug 30, 2023	BRADBURY DANIEL	SALE	20.03	2.78K	55.68K	106.76K

Insider Transaction Summary (6 Months)

SHARESTRANS

PURCHASE00

SALES34.35K22

NET SHARES-34.35K22

NO. OF SHARES HELD566.14K22

% NET SHARES-106.07%0%

Frequently Asked Questions

CSTL Stock Outstanding Shares

ShortableYes

OptionableYes

Short Percent Of Outstanding Shares6.48

Short Percent Of Float6.68

Shares Outstanding28.51M

Shares Float27.69M

Shares Short1.85M

Short Ratio4.57

6.68%

Short % of Float

6.48%

Short % of Shares Outstanding

Market Insider CSTL

Investors cannot turn a blind eye to insiders as well as institutional ownership. They need to follow insider trades to determine the direction the stock is likely to take.

Major Holders Summary

3.37% Percentage of Shares held by All Insiders

94.2% Percentage of Shares held by All Institutions

97.48% Percentage of Float held by Institutions

258

Number of Institutions Holding Shares

Institutional Ownership

Date	Holder	% Stake	Shares Held	Total Value ($)	Shares	% Change in Portfolio
Mar 31, 2024	PRINCIPAL FINANCIAL GROUP INC	5.67%	1.53M	33.94M	-53.2K	-3.36%
Mar 31, 2024	LOS ANGELES CAPITAL MANAGEMENT LLC	0.07%	18.2K	403.15K	0	0
Mar 31, 2024	STATE OF WISCONSIN INVESTMENT BOARD	0.07%	17.64K	390.77K	-2.27K	-11.41%
Mar 31, 2024	VANGUARD GROUP INC	5.53%	1.49M	33.1M	32.7K	+2.24%
Mar 31, 2024	BELLEVUE GROUP AG	4.51%	1.22M	27.02M	-12.29K	-1.00%
Mar 31, 2024	PORTOLAN CAPITAL MANAGEMENT, LLC	3.86%	1.04M	23.11M	314.76K	+43.20%
Mar 31, 2024	DEERFIELD MANAGEMENT COMPANY, L.P. (SERIES C)	3.43%	928.02K	20.56M	-37.41K	-3.88%
Mar 31, 2024	SOLEUS CAPITAL MANAGEMENT, L.P.	2.68%	725.46K	16.07M	699.46K	+2,690.22%
Mar 31, 2024	CITADEL ADVISORS LLC	2.43%	655.77K	14.53M	327.02K	+99.47%
Mar 31, 2024	MORGAN STANLEY	2.41%	650.71K	14.41M	172.68K	+36.12%
Mar 31, 2024	STATE STREET CORP	2.24%	605.8K	13.42M	25.88K	+4.46%
Mar 31, 2024	GEODE CAPITAL MANAGEMENT, LLC	2.14%	578.53K	12.82M	12.42K	+2.19%
Mar 31, 2024	PALISADE CAPITAL MANAGEMENT, LP	2.02%	547.17K	12.12M	8.03K	+1.49%
Mar 31, 2024	KORNITZER CAPITAL MANAGEMENT INC /KS	2.01%	542.87K	12.02M	0	0
Mar 31, 2024	INTRINSIC EDGE CAPITAL MANAGEMENT LLC	0.55%	150K	3.32M	150K	+100.00%
Mar 31, 2024	NEXT CENTURY GROWTH INVESTORS LLC	0.81%	219.47K	4.86M	5.59K	+2.61%
Mar 31, 2024	RENAISSANCE TECHNOLOGIES LLC	0.76%	204.7K	4.53M	92.3K	+82.12%
Mar 31, 2024	NUVEEN ASSET MANAGEMENT, LLC	0.7%	189.63K	4.2M	7.15K	+3.92%
Mar 31, 2024	BANQUE PICTET & CIE SA	0.62%	166.88K	3.7M	-15.78K	-8.64%
Mar 31, 2024	INVENOMIC CAPITAL MANAGEMENT LP	0.62%	166.71K	3.69M	-5.1K	-2.97%
Mar 31, 2024	SCHONFELD STRATEGIC ADVISORS LLC	0.61%	165.44K	3.66M	4.14K	+2.57%
Mar 31, 2024	BANK OF AMERICA CORP /DE/	0.56%	151.17K	3.35M	12.59K	+9.08%
Mar 31, 2024	ALGERT GLOBAL LLC	0.54%	145.41K	3.22M	16.3K	+12.62%
Mar 31, 2024	ADVISORS CAPITAL MANAGEMENT, LLC	0.52%	141.12K	3.13M	19.23K	+15.77%
Mar 31, 2024	GOLDMAN SACHS GROUP INC	0.46%	124.67K	2.76M	44.28K	+55.09%
Mar 31, 2024	MARSHALL WACE, LLP	0.36%	97.93K	2.17M	53.03K	+118.11%
Mar 31, 2024	PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO	0.35%	93.44K	2.07M	-6.82K	-6.80%
Mar 31, 2024	TRITONPOINT WEALTH, LLC	0.34%	92.25K	2.04M	-2.11K	-2.23%
Mar 31, 2024	BANK OF NEW YORK MELLON CORP	0.31%	84.11K	1.86M	-9.2K	-9.86%
Mar 31, 2024	CUBIST SYSTEMATIC STRATEGIES, LLC	0.3%	81.74K	1.81M	11.53K	+16.42%
Mar 31, 2024	CONNOR, CLARK & LUNN INVESTMENT MANAGEMENT LTD.	0.29%	77.66K	1.72M	-10.91K	-12.32%
Mar 31, 2024	JPMORGAN CHASE & CO	0.28%	76.14K	1.69M	25.78K	+51.18%
Mar 31, 2024	ORION PORTFOLIO SOLUTIONS, LLC	0.25%	67.24K	1.49M	-2.5K	-3.58%
Mar 31, 2024	POLAR ASSET MANAGEMENT PARTNERS INC.	0.22%	60.8K	1.35M	7.6K	+14.29%
Mar 31, 2024	MILLRACE ASSET GROUP, INC.	0.18%	49.77K	1.1M	-29.14K	-36.93%
Mar 31, 2024	WASATCH ADVISORS LP	9.44%	2.55M	56.51M	-39.86K	-1.54%
Mar 31, 2024	JACOBS LEVY EQUITY MANAGEMENT, INC	1.97%	531.9K	11.78M	-4.89K	-0.91%
Mar 31, 2024	PARKMAN HEALTHCARE PARTNERS LLC	1.36%	367.41K	8.14M	10.25K	+2.87%
Mar 31, 2024	AMERIPRISE FINANCIAL INC	1.09%	295.33K	6.54M	15.6K	+5.58%
Mar 31, 2024	DEUTSCHE BANK AG\	0.97%	262.81K	5.82M	106.98K	+68.65%
Mar 31, 2024	MILLENNIUM MANAGEMENT LLC	0.92%	248.55K	5.51M	-467.8K	-65.30%
Mar 31, 2024	NORTHERN TRUST CORP	0.9%	244.39K	5.41M	-5.6K	-2.24%
Mar 31, 2024	NEW YORK STATE COMMON RETIREMENT FUND	0.85%	228.58K	5.06M	-8.55K	-3.60%
Mar 31, 2024	ACADIAN ASSET MANAGEMENT LLC	0.78%	210.82K	4.67M	119.44K	+130.71%
Mar 31, 2024	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	0.76%	204.94K	4.54M	-2.36K	-1.14%
Mar 31, 2024	UBS GROUP AG	0.2%	54.84K	1.21M	13.37K	+32.23%
Mar 31, 2024	GSA CAPITAL PARTNERS LLP	0.19%	52.45K	1.16M	4.35K	+9.05%
Mar 31, 2024	SWISS NATIONAL BANK	0.19%	50.2K	1.11M	0	0
Mar 31, 2024	DIMENSIONAL FUND ADVISORS LP	2.77%	749.26K	16.6M	85.38K	+12.86%
Mar 31, 2024	BLACKROCK INC.	9.6%	2.6M	57.49M	312.49K	+13.69%
Mar 31, 2024	GRANAHAN INVESTMENT MANAGEMENT, LLC	6.02%	1.63M	36.04M	-539.25K	-24.89%
Mar 31, 2024	ENVESTNET ASSET MANAGEMENT INC	0.17%	45.93K	1.02M	-4.1K	-8.20%
Mar 31, 2024	SUSQUEHANNA INTERNATIONAL GROUP, LLP	0.17%	45.9K	1.02M	45.9K	+100.00%
Mar 31, 2024	TREXQUANT INVESTMENT LP	0.17%	45K	996.68K	33.51K	+291.58%
Mar 31, 2024	HARBOR CAPITAL ADVISORS, INC.	0.15%	39.71K	879K	27.75K	+232.21%
Mar 31, 2024	RHUMBLINE ADVISERS	0.14%	38.91K	861.8K	1K	+2.64%
Mar 31, 2024	AMERICAN CENTURY COMPANIES INC	0.14%	37.92K	839.93K	11.21K	+41.97%
Mar 31, 2024	CREDIT SUISSE AG/	0.13%	35.81K	793.17K	1.76K	+5.17%
Mar 31, 2024	FRANKLIN RESOURCES INC	0.13%	35.5K	786.33K	35.5K	+100.00%
Mar 31, 2024	ABG INNOVATION CAPITAL PARTNERS III GP LTD	0.12%	33.63K	744.82K	-3.12K	-8.49%
Mar 31, 2024	ALLIANCEBERNSTEIN L.P.	0.12%	33.37K	739.15K	-11.32K	-25.33%
Mar 31, 2024	PERKINS CAPITAL MANAGEMENT INC	0.12%	32.14K	712K	0	0
Mar 31, 2024	RUSSELL INVESTMENTS GROUP, LTD.	0.12%	31.69K	702K	-290	-0.91%
Mar 31, 2024	SIMON QUICK ADVISORS, LLC	0.11%	29.06K	643.72K	0	0
Mar 31, 2024	INVESCO LTD.	0.1%	27.4K	606.82K	-4.76K	-14.80%
Mar 31, 2024	PARALLEL ADVISORS, LLC	0.1%	26.67K	590.7K	-300	-1.11%
Mar 31, 2024	KNIGHTS OF COLUMBUS ASSET ADVISORS LLC	0.09%	25.13K	556.7K	-81.13K	-76.35%
Mar 31, 2024	LEGAL & GENERAL GROUP PLC	0.09%	24.77K	548.68M	-50	-0.20%
Mar 31, 2024	NORDEN GROUP LLC	0.09%	24.67K	546.51K	24.67K	+100.00%
Mar 31, 2024	Y-INTERCEPT (HONG KONG) LTD	0.09%	24.6K	544.96K	14.01K	+132.26%
Mar 31, 2024	STRS OHIO	0.08%	22.7K	502K	-1.4K	-5.81%
Dec 31, 2023	NUVEEN ASSET MANAGEMENT, LLC	0.68%	182.47K	3.94M	6.19K	+3.51%
Dec 31, 2023	INVENOMIC CAPITAL MANAGEMENT LP	0.64%	171.81K	3.71M	-114.15K	-39.92%
Dec 31, 2023	SCHONFELD STRATEGIC ADVISORS LLC	0.6%	161.3K	3.48M	13.27K	+8.96%
Dec 31, 2023	DEUTSCHE BANK AG\	0.58%	155.83K	3.36M	141.79K	+1,010.06%
Dec 31, 2023	BANK OF AMERICA CORP /DE/	0.52%	138.58K	2.99M	95.86K	+224.36%
Dec 31, 2023	ALGERT GLOBAL LLC	0.48%	129.11K	2.79M	61.9K	+92.09%
Dec 31, 2023	ADVISORS CAPITAL MANAGEMENT, LLC	0.45%	121.89K	2.63M	5K	+4.28%
Dec 31, 2023	RENAISSANCE TECHNOLOGIES LLC	0.42%	112.4K	2.43M	5.6K	+5.24%
Dec 31, 2023	KNIGHTS OF COLUMBUS ASSET ADVISORS LLC	0.4%	106.26K	2.29M	52.92K	+99.21%
Dec 31, 2023	PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO	0.37%	100.25K	2.16M	0	0
Dec 31, 2023		0.35%	94.36K	2.04M	94.36K	+100.00%
Dec 31, 2023	BANK OF NEW YORK MELLON CORP	0.35%	93.31K	2.01M	12.17K	+14.99%
Dec 31, 2023	ACADIAN ASSET MANAGEMENT LLC	0.34%	91.38K	1.97M	91.38K	+100.00%
Dec 31, 2023	CONNOR, CLARK & LUNN INVESTMENT MANAGEMENT LTD.	0.33%	88.57K	1.91M	7.99K	+9.91%
Dec 31, 2023	GOLDMAN SACHS GROUP INC	0.3%	80.39K	1.73M	-71.36K	-47.03%
Dec 31, 2023	MILLRACE ASSET GROUP, INC.	0.29%	78.91K	1.7M	1.6K	+2.07%
Dec 31, 2023	CUBIST SYSTEMATIC STRATEGIES, LLC	0.26%	70.22K	1.52M	-66.32K	-48.57%
Dec 31, 2023	ORION PORTFOLIO SOLUTIONS, LLC	0.26%	69.73K	1.53M	-4.29K	-5.80%
Dec 31, 2023	POLAR ASSET MANAGEMENT PARTNERS INC.	0.2%	53.2K	1.15M	53.2K	+100.00%
Dec 31, 2023	D. E. SHAW & CO., INC.	0.2%	52.36K	1.13M	52.36K	+100.00%
Dec 31, 2023	JPMORGAN CHASE & CO	0.19%	50.37K	1.09M	-2.3K	-4.36%
Dec 31, 2023	SWISS NATIONAL BANK	0.19%	50.2K	1.08M	-5K	-9.06%
Dec 31, 2023	ENVESTNET ASSET MANAGEMENT INC	0.19%	50.03K	1.08M	-3.96K	-7.33%
Dec 31, 2023	GSA CAPITAL PARTNERS LLP	0.18%	48.1K	1.04M	-4.1K	-7.85%
Dec 31, 2023	MARSHALL WACE, LLP	0.17%	44.9K	968.94K	44.9K	+100.00%
Dec 31, 2023	WASATCH ADVISORS LP	9.66%	2.59M	55.91M	-189.79K	-6.83%
Dec 31, 2023	BLACKROCK INC.	8.51%	2.28M	49.27M	147.02K	+6.88%
Dec 31, 2023	GRANAHAN INVESTMENT MANAGEMENT, LLC	8.07%	2.17M	46.75M	-321.2K	-12.91%
Dec 31, 2023	PRINCIPAL FINANCIAL GROUP INC	5.91%	1.59M	34.22M	103.5K	+6.98%
Dec 31, 2023	VANGUARD GROUP INC	5.45%	1.46M	31.54M	22.09K	+1.53%
Dec 31, 2023	BELLEVUE GROUP AG	4.59%	1.23M	26.59M	4.35K	+0.35%
Dec 31, 2023	DEERFIELD MANAGEMENT COMPANY, L.P. (SERIES C)	3.6%	965.43K	20.83M	18.81K	+1.99%
Dec 31, 2023	PORTOLAN CAPITAL MANAGEMENT, LLC	2.72%	728.65K	15.72M	475.63K	+187.97%
Dec 31, 2023	MILLENNIUM MANAGEMENT LLC	2.67%	716.35K	15.46M	121.25K	+20.38%
Dec 31, 2023	DIMENSIONAL FUND ADVISORS LP	2.47%	663.88K	14.33M	108.48K	+19.53%
Dec 31, 2023	STATE STREET CORP	2.16%	579.92K	12.51M	14.75K	+2.61%
Dec 31, 2023	GEODE CAPITAL MANAGEMENT, LLC	2.11%	566.12K	12.22M	29.88K	+5.57%
Dec 31, 2023	KORNITZER CAPITAL MANAGEMENT INC /KS	2.02%	542.87K	11.72M	-105.35K	-16.25%
Dec 31, 2023	PALISADE CAPITAL MANAGEMENT, LP	2.01%	539.14K	11.63M	-63.13K	-10.48%
Dec 31, 2023	JACOBS LEVY EQUITY MANAGEMENT, INC	2%	536.79K	11.58M	-10.62K	-1.94%
Dec 31, 2023	MORGAN STANLEY	1.78%	478.04K	10.32M	439.39K	+1,136.96%
Dec 31, 2023	PARKMAN HEALTHCARE PARTNERS LLC	1.33%	357.16K	7.71M	132.56K	+59.02%
Dec 31, 2023	CITADEL ADVISORS LLC	1.23%	328.75K	7.09M	-189.31K	-36.54%
Dec 31, 2023	INTRINSIC EDGE CAPITAL MANAGEMENT LLC	1.22%	326.27K	7.04M	170K	+108.79%
Dec 31, 2023	AMERIPRISE FINANCIAL INC	1.04%	279.73K	6.04M	13.73K	+5.16%
Dec 31, 2023	NORTHERN TRUST CORP	0.93%	249.98K	5.39M	6.14K	+2.52%
Dec 31, 2023	NEW YORK STATE COMMON RETIREMENT FUND	0.88%	237.13K	5.12M	-8.74K	-3.56%
Dec 31, 2023	NEXT CENTURY GROWTH INVESTORS LLC	0.8%	213.89K	4.62M	213.89K	+100.00%
Dec 31, 2023	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	0.77%	207.3K	4.47M	6.31K	+3.14%
Dec 31, 2023	BANQUE PICTET & CIE SA	0.68%	182.66K	3.94M	-20.61K	-10.14%

CSTL Insiders

Insiders	Designation	Shares Held
OELSCHLAGER KRISTEN M	Chief Operating Officer	134.84K
JUVENAL TOBIN W	Chief Commercial Officer	69.94K
STOKES FRANK	Chief Financial Officer	35.32K
MAETZOLD DEREK J	Pres. & Chief Exec. Officer	4.61K
BRADBURY DANIEL	director	0

Buying/Selling by Insiders

Date	Insider	Type	Cost	Shares	Value ($)	Shares Total
Mar 26, 2025	MAETZOLD DEREK J	SALE	20.30	165	3.35K	4.61K
Mar 10, 2025	MAETZOLD DEREK J	SALE	19.52	2.13K	41.57K	78.34K
Mar 07, 2025	MAETZOLD DEREK J	SALE	20.74	15	311.16	4.77K
Feb 20, 2025	STOKES FRANK	SALE	26.70	8.05K	214.83K	35.32K
Feb 05, 2025	BRADBURY DANIEL	SALE	28.17	1.43K	40.15K	0
Jan 13, 2025	MAETZOLD DEREK J	SALE	29.48	4	117.92	5.1K
Jan 07, 2025	MAETZOLD DEREK J	SALE	30.14	37	1.12K	5.25K
Jan 06, 2025	BRADBURY DANIEL	SALE	29.82	134	4K	1.43K
Jan 06, 2025	JUVENAL TOBIN W	SALE	30.00	2.23K	66.9K	69.94K
Jan 06, 2025	MAETZOLD DEREK J	SALE	30.18	262	7.91K	5.29K
Dec 17, 2024	MAETZOLD DEREK J	SALE	28.76	112	3.22K	84.76K
Dec 16, 2024	MAETZOLD DEREK J	SALE	28.83	11.06K	318.86K	94.13K
Dec 13, 2024	MAETZOLD DEREK J	SALE	29.16	37	1.08K	5.7K
Dec 05, 2024	MAETZOLD DEREK J	SALE	31.35	299	9.37K	5.85K
Dec 03, 2024	BRADBURY DANIEL	SALE	31.32	99	3.1K	2.85K
Nov 15, 2024	STOKES FRANK	SALE	30.40	800	24.32K	30.82K
Nov 12, 2024	MAETZOLD DEREK J	SALE	34.15	299	10.21K	6.15K
Nov 05, 2024	JUVENAL TOBIN W	SALE	35.56	3.51K	124.71K	54.18K
Nov 04, 2024	MAETZOLD DEREK J	SALE	33.16	5	165.78	6.45K
Nov 01, 2024	BRADBURY DANIEL	SALE	35.33	287	10.14K	4.28K
Nov 01, 2024	JUVENAL TOBIN W	SALE	35.39	3.1K	109.71K	54.18K
Oct 14, 2024	MAETZOLD DEREK J	SALE	32.27	299	9.65K	6.75K
Oct 08, 2024	MAETZOLD DEREK J	SALE	30.27	149	4.51K	7.05K
Oct 07, 2024	BRADBURY DANIEL	SALE	29.44	1.43K	41.96K	5.7K
Oct 04, 2024	MAETZOLD DEREK J	SALE	28.73	150	4.31K	7.2K
Sep 16, 2024	MAETZOLD DEREK J	SALE	30.97	299	9.26K	7.35K
Sep 11, 2024	MAETZOLD DEREK J	SALE	30.32	160	4.85K	7.65K
Sep 09, 2024	MAETZOLD DEREK J	SALE	29.46	150	4.42K	7.81K
Sep 05, 2024	BRADBURY DANIEL	SALE	29.02	1.43K	41.36K	7.13K
Sep 04, 2024	MAETZOLD DEREK J	SALE	30.02	49	1.47K	7.96K
Sep 03, 2024	MAETZOLD DEREK J	SALE	30.05	68	2.04K	8.01K
Sep 03, 2024	OELSCHLAGER KRISTEN M	SALE	29.97	1.25K	37.46K	134.84K
Aug 30, 2024	MAETZOLD DEREK J	SALE	30.10	53	1.6K	8.07K
Aug 29, 2024	MAETZOLD DEREK J	SALE	30.07	218	6.56K	8.13K
Aug 26, 2024	MAETZOLD DEREK J	SALE	30.05	14	420.69	8.34K
Aug 23, 2024	MAETZOLD DEREK J	SALE	30.09	169	5.09K	8.36K
Aug 12, 2024	BRADBURY DANIEL	SALE	26.65	1.43K	38.13K	8.55K
Aug 07, 2024	STOKES FRANK	SALE	26.13	5.4K	141.09K	30.82K
Aug 01, 2024	OELSCHLAGER KRISTEN M	SALE	23.77	4.23K	100.43K	132.84K
Jul 29, 2024	OELSCHLAGER KRISTEN M	SALE	22.06	2.79K	61.62K	145.83K
Jul 01, 2024	OELSCHLAGER KRISTEN M	SALE	21.22	2.79K	59.28K	148.62K
Jun 03, 2024	MAETZOLD DEREK J	SALE	23.98	6	143.87	8.53K
May 14, 2024	MAETZOLD DEREK J	SALE	24.95	46	1.15K	8.91K
May 06, 2024	MAETZOLD DEREK J	SALE	24.72	386	9.54K	9.3K
May 06, 2024	BRADBURY DANIEL	SALE	24.64	7.97K	196.31K	9.98K
Apr 23, 2024	MAETZOLD DEREK J	SALE	20.11	69	1.39K	9.68K
Apr 12, 2024	MAETZOLD DEREK J	SALE	20.35	317	6.45K	9.75K
Apr 08, 2024	BRADBURY DANIEL	SALE	20.45	819	16.75K	17.94K
Apr 05, 2024	BRADBURY DANIEL	SALE	20.86	4.02K	83.84K	18.76K
Apr 04, 2024	BRADBURY DANIEL	SALE	21.45	3.13K	67.03K	22.78K
Apr 03, 2024	MAETZOLD DEREK J	SALE	21.70	386	8.38K	10.07K
Mar 21, 2024	MAETZOLD DEREK J	SALE	20.70	12	248.4	10.46K
Mar 20, 2024	MAETZOLD DEREK J	SALE	20.27	374	7.58K	10.47K
Mar 07, 2024	MAETZOLD DEREK J	SALE	20.77	388	8.06K	10.84K
Mar 05, 2024	MAETZOLD DEREK J	SALE	21.41	4.13K	88.46K	74.47K
Mar 04, 2024	BRADBURY DANIEL	SALE	21.28	2.26K	48.14K	25.91K
Feb 07, 2024	BRADBURY DANIEL	SALE	23.20	708	16.43K	33.87K
Feb 06, 2024	BRADBURY DANIEL	SALE	23.63	3.36K	79.44K	34.58K
Feb 05, 2024	BRADBURY DANIEL	SALE	23.42	930	21.78K	37.94K
Jan 05, 2024	BRADBURY DANIEL	SALE	20.36	1.74K	35.45K	41.83K
Jan 04, 2024	BRADBURY DANIEL	SALE	20.40	6.22K	126.93K	43.57K
Dec 28, 2023	MAETZOLD DEREK J	SALE	22.17	3.95K	87.66K	64.08K
Dec 27, 2023	MAETZOLD DEREK J	SALE	21.90	119	2.61K	11.69K
Dec 26, 2023	MAETZOLD DEREK J	SALE	21.93	77	1.69K	11.81K
Dec 22, 2023	MAETZOLD DEREK J	SALE	21.96	78	1.71K	11.88K
Dec 21, 2023	MAETZOLD DEREK J	SALE	21.40	448	9.59K	93K
Dec 20, 2023	MAETZOLD DEREK J	SALE	21.05	5.2K	109.46K	97.52K
Dec 19, 2023	MAETZOLD DEREK J	SALE	20.84	5.72K	119.16K	102.72K
Dec 18, 2023	MAETZOLD DEREK J	SALE	20.27	5.72K	115.96K	108.44K
Dec 15, 2023	MAETZOLD DEREK J	SALE	20.21	3.71K	74.96K	114.16K
Dec 14, 2023	MAETZOLD DEREK J	SALE	20.86	8.87K	184.94K	118.15K
Dec 06, 2023	MAETZOLD DEREK J	SALE	20.02	15	300.3	100.21K
Dec 06, 2023	BRADBURY DANIEL	SALE	20.02	64	1.28K	75.02K
Dec 04, 2023	MAETZOLD DEREK J	SALE	20.08	435	8.73K	100.23K
Dec 04, 2023	BRADBURY DANIEL	SALE	20.08	1.38K	27.62K	75.08K
Dec 01, 2023	BRADBURY DANIEL	SALE	20.05	3.03K	60.67K	76.46K
Dec 01, 2023	MAETZOLD DEREK J	SALE	20.06	1.02K	20.46K	100.66K
Nov 30, 2023	MAETZOLD DEREK J	SALE	20.07	4.51K	90.52K	101.88K
Nov 30, 2023	BRADBURY DANIEL	SALE	20.08	7.31K	146.73K	79.48K
Nov 29, 2023	MAETZOLD DEREK J	SALE	20.13	5.74K	115.61K	106.39K
Nov 29, 2023	BRADBURY DANIEL	SALE	20.13	10.41K	209.42K	86.79K
Nov 24, 2023	BRADBURY DANIEL	SALE	20.02	480	9.61K	97.19K
Nov 24, 2023	MAETZOLD DEREK J	SALE	20.03	287	5.75K	112.13K
Nov 21, 2023	BRADBURY DANIEL	SALE	20.00	180	3.6K	97.67K
Nov 21, 2023	MAETZOLD DEREK J	SALE	20.01	758	15.17K	112.42K
Nov 20, 2023	MAETZOLD DEREK J	SALE	20.04	1.93K	38.6K	113.18K
Nov 20, 2023	BRADBURY DANIEL	SALE	20.04	3.45K	69.16K	97.85K
Sep 01, 2023	BRADBURY DANIEL	SALE	20.04	1.08K	21.68K	101.31K
Sep 01, 2023	MAETZOLD DEREK J	SALE	20.05	718	14.4K	115.1K
Aug 31, 2023	BRADBURY DANIEL	SALE	20.05	4.37K	87.67K	102.39K
Aug 31, 2023	MAETZOLD DEREK J	SALE	20.06	4.08K	81.92K	115.82K
Aug 30, 2023	MAETZOLD DEREK J	SALE	20.03	1.62K	32.49K	119.91K
Aug 30, 2023	BRADBURY DANIEL	SALE	20.03	2.78K	55.68K	106.76K

Insider Transaction Summary (6 Months)

SHARESTRANS

PURCHASE00

SALES34.35K22

NET SHARES-34.35K22

NO. OF SHARES HELD566.14K22

% NET SHARES-106.07%0%

CSTL Stock Ownership Breakdown

Castle Biosciences, Inc.

CSTL Stock Outstanding Shares

Market Insider CSTL

Institutional Ownership

CSTL Insiders

Buying/Selling by Insiders

Insider Transaction Summary (6 Months)

Frequently Asked Questions

CSTL Stock Outstanding Shares

Market Insider CSTL

Institutional Ownership

CSTL Insiders

Buying/Selling by Insiders

Insider Transaction Summary (6 Months)

Frequently Asked Questions