Castle Biosciences
Insider trading & Transactions

Last updated: 8 Jun 2021

Transaction	Date	Insider	Security	Shares	Price per share	Total value
Sale	8 Jun 2021	SPIESS BERNHARD E. officer: Chief Business Officer officer: Chief Business Officer	Common Stock	8,989	$1.92	$17,259
Sale	8 Jun 2021	MAETZOLD DEREK J director, officer: Pres. & Chief Exec. Of.. director, officer: Pres. & Chie..	Common Stock	10,000	$69.94	$699,380
Sale	8 Jun 2021	MAETZOLD DEREK J director, officer: Pres. & Chief Exec. Of.. director, officer: Pres. & Chie..	Common Stock	10,000	$69.94	$699,380
Option	8 Jun 2021	SPIESS BERNHARD E. officer: Chief Business Officer officer: Chief Business Officer	Common Stock	8,989	$1.92	$17,259
Sale	1 Jun 2021	MAETZOLD DEREK J director, officer: Pres. & Chief Exec. Of.. director, officer: Pres. & Chie..	Common Stock	2,438	$59.45	$144,932
Sale	1 Jun 2021	MAETZOLD DEREK J director, officer: Pres. & Chief Exec. Of.. director, officer: Pres. & Chie..	Common Stock	2,438	N/A	N/A
Sale	28 May 2021	MAETZOLD DEREK J director, officer: Pres. & Chief Exec. Of.. director, officer: Pres. & Chie..	Common Stock	9,497	$60.76	$577,019
Sale	28 May 2021	MAETZOLD DEREK J director, officer: Pres. & Chief Exec. Of.. director, officer: Pres. & Chie..	Common Stock	9,497	$60.76	$577,019
Sale	27 May 2021	MAETZOLD DEREK J director, officer: Pres. & Chief Exec. Of.. director, officer: Pres. & Chie..	Common Stock	4,034	$58.62	$236,465
Sale	27 May 2021	MAETZOLD DEREK J director, officer: Pres. & Chief Exec. Of.. director, officer: Pres. & Chie..	Common Stock	4,034	$58.62	$236,465
Sale	26 May 2021	MAETZOLD DEREK J director, officer: Pres. & Chief Exec. Of.. director, officer: Pres. & Chie..	Common Stock	4,033	$59.83	$241,294
Sale	26 May 2021	MAETZOLD DEREK J director, officer: Pres. & Chief Exec. Of.. director, officer: Pres. & Chie..	Common Stock	4,033	$59.83	$241,294
Sale	25 May 2021	MAETZOLD DEREK J director, officer: Pres. & Chief Exec. Of.. director, officer: Pres. & Chie..	Common Stock	8,599	$60.5	$520,240
Sale	20 May 2021	MAETZOLD DEREK J director, officer: Pres. & Chief Exec. Of.. director, officer: Pres. & Chie..	Common Stock	1,300	$60.47	$78,611
Sale	18 May 2021	MAETZOLD DEREK J director, officer: Pres. & Chief Exec. Of.. director, officer: Pres. & Chie..	Common Stock	100	$60.09	$6,009
Sale	13 May 2021	MAETZOLD DEREK J director, officer: Pres. & Chief Exec. Of.. director, officer: Pres. & Chie..	Common Stock	3,333	N/A	N/A
Sale	12 May 2021	MAETZOLD DEREK J director, officer: Pres. & Chief Exec. Of.. director, officer: Pres. & Chie..	Common Stock	3,333	$52.41	$174,669
Sale	12 May 2021	MAETZOLD DEREK J director, officer: Pres. & Chief Exec. Of.. director, officer: Pres. & Chie..	Common Stock	3,333	N/A	N/A
Sale	11 May 2021	MAETZOLD DEREK J director, officer: Pres. & Chief Exec. Of.. director, officer: Pres. & Chie..	Common Stock	3,333	N/A	N/A
Sale	11 May 2021	MAETZOLD DEREK J director, officer: Pres. & Chief Exec. Of.. director, officer: Pres. & Chie..	Common Stock	3,333	$53.08	$176,916
Sale	28 Apr 2021	MAETZOLD DEREK J director, officer: Pres. & Chief Exec. Of.. director, officer: Pres. & Chie..	Common Stock	14,374	$68.49	$984,461
Sale	28 Apr 2021	MAETZOLD DEREK J director, officer: Pres. & Chief Exec. Of.. director, officer: Pres. & Chie..	Common Stock	14,374	$68.49	$984,461
Sale	27 Apr 2021	MAETZOLD DEREK J director, officer: Pres. & Chief Exec. Of.. director, officer: Pres. & Chie..	Common Stock	14,374	$71.05	$1,021,301
Sale	27 Apr 2021	MAETZOLD DEREK J director, officer: Pres. & Chief Exec. Of.. director, officer: Pres. & Chie..	Common Stock	14,374	$71.05	$1,021,301
Sale	26 Apr 2021	MAETZOLD DEREK J director, officer: Pres. & Chief Exec. Of.. director, officer: Pres. & Chie..	Common Stock	14,374	$69.24	$995,184
Sale	26 Apr 2021	MAETZOLD DEREK J director, officer: Pres. & Chief Exec. Of.. director, officer: Pres. & Chie..	Common Stock	14,374	N/A	N/A
Sale	26 Apr 2021	MAETZOLD DEREK J director, officer: Pres. & Chief Exec. Of.. director, officer: Pres. & Chie..	Common Stock	14,374	$69.24	$995,184
Sale	22 Apr 2021	BRADBURY DANIEL director director	Common Stock	7,500	$43.46	$325,935
Sale	22 Apr 2021	BRADBURY DANIEL director director	Common Stock	7,500	$64.67	$485,048
Sale	21 Apr 2021	BRADBURY DANIEL director director	Common Stock	7,500	$61.46	$460,928
Sale	21 Apr 2021	BRADBURY DANIEL director director	Common Stock	7,500	$61.46	$460,928
Sale	15 Apr 2021	MAETZOLD DEREK J director, officer: Pres. & Chief Exec. Of.. director, officer: Pres. & Chie..	Common Stock	14,374	N/A	N/A
Sale	15 Apr 2021	MAETZOLD DEREK J director, officer: Pres. & Chief Exec. Of.. director, officer: Pres. & Chie..	Common Stock	14,374	$68.8	$988,888
Sale	14 Apr 2021	MAETZOLD DEREK J director, officer: Pres. & Chief Exec. Of.. director, officer: Pres. & Chie..	Common Stock	14,374	$70.47	$1,012,979
Sale	14 Apr 2021	MAETZOLD DEREK J director, officer: Pres. & Chief Exec. Of.. director, officer: Pres. & Chie..	Common Stock	14,374	$17.92	$257,596
Sale	13 Apr 2021	MAETZOLD DEREK J director, officer: Pres. & Chief Exec. Of.. director, officer: Pres. & Chie..	Common Stock	14,374	$68.05	$978,122
Sale	13 Apr 2021	MAETZOLD DEREK J director, officer: Pres. & Chief Exec. Of.. director, officer: Pres. & Chie..	Common Stock	14,374	$68.05	$978,122
Sale	13 Apr 2021	MAETZOLD DEREK J director, officer: Pres. & Chief Exec. Of.. director, officer: Pres. & Chie..	Common Stock	14,374	N/A	N/A
Sale	7 Apr 2021	BRADBURY DANIEL director director	Common Stock	7,500	N/A	N/A
Sale	7 Apr 2021	BRADBURY DANIEL director director	Common Stock	7,500	$72.23	$541,710
Sale	7 Apr 2021	BRADBURY DANIEL director director	Common Stock	7,500	$72.23	$541,710
Sale	6 Apr 2021	KABAKOFF DAVID S director director	Common Stock	40,000	N/A	N/A
Sale	6 Apr 2021	BRADBURY DANIEL director director	Common Stock	7,500	N/A	N/A
Sale	6 Apr 2021	BRADBURY DANIEL director director	Common Stock	7,500	$73.8	$553,500
Sale	5 Apr 2021	KABAKOFF DAVID S director director	Common Stock	70,000	N/A	N/A
Sale	1 Apr 2021	KABAKOFF DAVID S director director	Common Stock	60,000	N/A	N/A
Sale	31 Mar 2021	KABAKOFF DAVID S director director	Common Stock	30,000	$35.4	$1,062,030
Sale	30 Mar 2021	MAETZOLD DEREK J director, officer: Pres. & Chief Exec. Of.. director, officer: Pres. & Chie..	Common Stock	16,874	$47.69	$804,772
Sale	29 Mar 2021	MAETZOLD DEREK J director, officer: Pres. & Chief Exec. Of.. director, officer: Pres. & Chie..	Common Stock	12,974	$59.2	$768,074
Sale	26 Mar 2021	MAETZOLD DEREK J director, officer: Pres. & Chief Exec. Of.. director, officer: Pres. & Chie..	Common Stock	13,275	$60.75	$806,390

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Insider trading

Monitoring trades made by the management members or major shareholders of companies may help create a sharper picture of what is happening inside the companies. Base your decisions on buys or sells of the people involved and do the right thing at the right time.

Who is insider?

Every director or senior officer, as well as any other entity or individual owning more than 10% of the company’s shares on the stock market, is called an insider. Such people or entities are allowed to buy/sell the company's shares under strictly controlled conditions. Key premise here is that none of them can make trades based on non-public information about the company.

Castle Biosciences Insider trading & Transactions

Insider trading

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Castle Biosciences
Insider trading & Transactions